CN104224314B - A kind of guiding catheter - Google Patents
A kind of guiding catheter Download PDFInfo
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- CN104224314B CN104224314B CN201410537534.8A CN201410537534A CN104224314B CN 104224314 B CN104224314 B CN 104224314B CN 201410537534 A CN201410537534 A CN 201410537534A CN 104224314 B CN104224314 B CN 104224314B
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- inner tube
- handle
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- outer tube
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0136—Handles therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0133—Tip steering devices
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biophysics (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (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 guiding catheter, including：The flexible and inner tube for delivery instrument in one end；It is set on the outside of inner tube and the flexible outer tube in one end, the flexible end of outer tube is fixedly connected with the flexible end of inner tube；It is all connected with the inner tube other end and the outer tube other end, inner tube is subject in the axial direction to the driving means away from the flexible end pulling force of outer tube with respect to outer tube.During using guiding catheter, start the pulling force that driving means are subject to inner tube, and one end of outer tube and inner tube is all flexible, can tense outer tube and drive inner tube while bending in the presence of pulling force, by adjusting the pulling force size of driving means, so that the guiding catheter achieves angle adjustable, solve the process that guiding catheter is constantly changed in surgical procedure, shorten the time of operation, improve efficiency.The Angulation changes of guiding catheter, it is ensured that guiding catheter meets different angle requirement, improve success rate of operation.Additionally, the bending end of the guiding catheter is also rotatable.
Description
Technical field
The present invention relates to technical field of medical instruments, in particular, is to be related to a kind of guiding catheter.
Background technology
In atrial fibrillation and other complicated arrhythmia cordis operations, generally electrode catheter need to be pointed to left and right using guide sheath
In orifices of pulmonary veins or left room or other positions.But as the dissection operation of left pulmonary veins oral area is complex, in anatomic course
In the position guide sheath that has be difficult to reach, and the sheath that clinically applies at present is the sheath of fixing camber, needs constantly to change
The guide sheath of different bendings can reach diverse location to realize electrode catheter, and this causes operating time longer, in some instances it may even be possible to electricity
Pole conduit is unable to reach preferable state, causes operating time length complete.
Therefore, how to provide a kind of camber adjustable guiding catheter, to shorten operating time, it is this area skill to improve efficiency
The current technical issues that need to address of art personnel.
Content of the invention
In view of this, the invention provides a kind of adjustable guiding catheter of camber, to shorten operating time, improves efficiency.
For achieving the above object, the present invention provides following technical scheme：
A kind of guiding catheter, which includes：
One end is flexible, and the inner tube for delivery instrument；
It is set on the outside of said inner tube, and the flexible outer tube in one end, the flexible end of the outer tube and said inner tube
Flexible end is fixedly connected；
All it is connected with the other end of the other end of said inner tube and the outer tube, so that said inner tube is with respect to the outer tube
It is subject in the axial direction to the driving means away from the flexible end pulling force of the outer tube.
Preferably, in above-mentioned guiding catheter, said inner tube includes：
And the inner tube body that outer wall is fixedly connected with the end of the outer tube；
It is connected with said inner tube body, and the soft head of flexible inner tube, the soft head of said inner tube offers installation through-hole.
Preferably, in above-mentioned guiding catheter, said inner tube body includes：
The inside tube inner layer of said inner tube body passage is formed, said inner tube internal layer is polytetrafluoroethylene floor；
The inside tube outer layer being connected with the outer tube, said inner tube outer layer be hardness near the soft head of said inner tube one end to
Near the nylon layer that one end of the driving means is gradually increased；
The inner tube enhancement layer being arranged between said inner tube internal layer and said inner tube outer layer, said inner tube enhancement layer are metal
Silk screen layer or spring；
The inner tube reinforcement being embedded in inside tube outer layer.
Preferably, in above-mentioned guiding catheter, the outer tube includes：
The linkage section being fixedly linked with said inner tube；
Outer tube body connected with the linkage section.
Preferably, in above-mentioned guiding catheter, the outer tube body includes：
The outer inner tube layer of the passage for sheathed said inner tube is formed, the outer inner tube layer is polytetrafluoroethylene floor；
Outer outer tube layer, the outer outer tube layer be hardness near the linkage section near the driving means one end by
Cumulative big nylon layer；
The outer tube enhancement layer being arranged between the outer outer tube layer and the outer inner tube layer, the outer tube enhancement layer are metal
Silk screen layer or spring.
Preferably, in above-mentioned guiding catheter, the driving means include：
Hollow handle main body；
Rotate with described handle main body one end and be connected, and hollow rotatable handle head；
Handle slide bar inside the rotatable handle head with the handle main body, the handle slide bar and the hand
The inwall of handle swivel head is threaded connection, and the handle slide bar is with the handle main body by limiting the handle slide bar circumference
The locating part of rotation is connected, and the outer tube is stretched in the handle slide bar and is fixedly linked with the handle slide bar；
The handle Turning knob being connected, said inner tube and the handle Turning knob is rotated with the handle main body other end
It is fixedly linked.
Preferably, in above-mentioned guiding catheter, the rotatable handle head is provided with draw-in groove circumferentially, the handle
It is provided with sliding in the draw-in groove in main body so that the handle rotary head rotates the fixation being connected with the handle main body
Screw.
Preferably, in above-mentioned guiding catheter, the locating part includes：
The stopper slot for being arranged on the handle slide bar and extending along axis；
Being arranged in the handle main body, the limit of handle slide bar rotation can be slided and is limited in the stopper slot
Position pin.
Preferably, in above-mentioned guiding catheter, between the rotatable handle head and the handle main body, and the handle
Damped ring is provided between main body and the handle Turning knob.
Preferably, in above-mentioned guiding catheter, also include the pipe joint being all connected with said inner tube and the outer tube.
Understand that, the invention discloses a kind of guiding catheter, which includes via above-mentioned technical scheme：One end is flexible and uses
Inner tube in delivery instrument；It is set on the outside of inner tube and the flexible outer tube in one end, and the flexible end of the outer tube and inner tube
Flexible end is fixedly connected；Be all connected with the other end of inner tube and the other end of outer tube, and make inner tube edge is subject to respect to outer tube
Axis direction is to the driving means away from the flexible end pulling force of outer tube.By above-mentioned setting, guiding disclosed in the present application is being used
During conduit, start the pulling force that driving means are subject to inner tube, and one end of outer tube and inner tube is all flexible, therefore, can be in pulling force
In the presence of, tense outer tube and inner tube is driven while bending, in practice can be real by the pulling force size of regulation driving means
Existing outer tube and the angular adjustment of inner tube bending, i.e., so that the guiding catheter achieves angle adjustable, solve in surgical procedure
Middle operator constantly changes the process of guiding catheter, it is therefore possible to shorten the time of operation, improves efficiency.Additionally, the guiding catheter
Angle can achieve to change at any angle, therefore, it is ensured that the guiding catheter disclosure satisfy that different angle requirement, improve hand
Art success rate.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for technology description is had to be briefly described, it should be apparent that, drawings in the following description are only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is the initial shape body structural representation of guiding catheter disclosed in the embodiment of the present invention；
Fig. 2 is the bending body structural representation of guiding catheter disclosed in the embodiment of the present invention；
Fig. 3 is the bending maximum angle shape body structural representation of guiding catheter disclosed in the embodiment of the present invention；
Fig. 4 is the structural representation of the inner tube of guiding catheter disclosed in the embodiment of the present invention；
Fig. 5 is the structural representation of the outer tube of guiding catheter disclosed in the embodiment of the present invention；
Fig. 6 is the structural representation that the outer tube of guiding catheter disclosed in the embodiment of the present invention and inner tube connect；
Fig. 7 is the structural representation of the driving means of guiding catheter disclosed in the embodiment of the present invention；
Fig. 8 is the structural representation of guiding catheter disclosed in the embodiment of the present invention.
Specific embodiment
The core of the present invention is to provide a kind of camber adjustable guiding catheter, to shorten operating time, improves efficiency.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Refer to shown in Fig. 1-Fig. 8, the invention discloses a kind of guiding catheter, which includes：One end is flexible and is used for defeated
Send the inner tube 1 of apparatus；It is set in 1 outside of inner tube and the flexible outer tube 3 in one end, and the flexible end of the outer tube 3 and inner tube 1
Flexible end is fixedly connected；Inner tube 1 is with respect to outer tube 3 by the axial direction to being driven away from the flexible end pulling force of outer tube 3
Device.By above-mentioned setting, when using guiding catheter disclosed in the present application, start the pulling force that driving means are subject to inner tube 1,
And one end of outer tube 3 and inner tube 1 is all flexible, therefore, can in the presence of pulling force, tense outer tube 3 and drive inner tube 1 while
Bending, can realize, by the pulling force size of regulation driving means, the angular adjustment that outer tube 3 is bent with inner tube 1 in practice, even if
Obtain the guiding catheter and angle adjustable achieved, the process that operator in surgical procedure constantly changes guiding catheter is solved,
It is therefore possible to shorten the time of operation, improves efficiency.Additionally, the angle of the guiding catheter can achieve to change at any angle, because
This, it is ensured that the guiding catheter disclosure satisfy that different angle requirement, improve success rate of operation.
Guiding catheter disclosed herein is tubulose, and length is 400mm～1450mm, and internal diameter is 0.4mm～5.0mm,
External diameter is 1.2mm～7mm.
In specific embodiment, above-mentioned inner tube 1 includes：Inner tube body 12 and inner tube soft 11.Wherein, inner tube body 12
Outer wall be fixedly connected with the end of outer tube 3, specifically, can by thermoplastic fusion bonding may also be employed, as long as ensure inner tube pipe
Body 12 is stably connected with outer tube 3.Above-mentioned inner tube is connected with inner tube body 12 for soft 11, and can be bent, for convenience
Through hole 2 is provided with to fix to apparatus on the side wall for being fixed on inner tube soft 11 of apparatus.
In further embodiment, the inner tube body 12 includes：Inside tube inner layer 123, inside tube outer layer 121 and inner tube enhancement layer
122.Wherein, 123 formed inner tube body of inside tube inner layer, 12 passage, for passing through for apparatus, and the inside tube inner layer 123 is poly- four
PVF, little have the characteristics that coefficient of friction so that conduit cavity is smooth, facilitate other apparatuses or conduit conveying, specifically, interior
The internal diameter of inner tube layer 123 is 0.4mm～5.0mm, and thickness is 0.02mm～0.1mm.The outside of inside tube outer layer 121 and 3 end of outer tube
Portion is connected, and the inside tube outer layer 121 is hardness from gradually increasing to the one end near driving means near one end of inner tube soft 11
Big nylon layer, further, it is also possible to be macromolecule polymer material block polyamide layer or layer of polyurethane.Using by near inner tube
Soft 11 one end is to being gradually increased near one end hardness of driving means, it is ensured that inner tube body 12 is near inner tube soft 11
One end flexible relative, and can be with good support force, specifically near one end of driving means, intensity is in 25D～72D
In the range of, the external diameter of inside tube outer layer 121 is 0.8mm～5.5mm.Inner tube enhancement layer 122 is arranged on outside inside tube inner layer 123 and inner tube
Between layer 121, and the inner tube enhancement layer 122 is stainless steel wire stratum reticulare or nitinol alloy wire woven mesh layer, and string diameter is 0.02mm
～0.1mm, density are 25PPI～100PPI (per inch mesh number), and woven wire cloth makes conduit have excellent fracture resistance
With 1:1 torsion control performance.
Inner tube 1 adopts ring-type platinumiridio, platinum, gold, tantalum, tungsten metal away from the development indicating 125 of one end of driving means
Ring material；Development indicating 125 is embedded in inside tube outer layer 121 near one end of inner tube soft 11；Inner tube reinforcement 124 is using stainless
The materials such as steel, Nitinol, tungsten, cochrome are made, and are flat filament shape；Inner tube reinforcement 124 is with development indicating 125 by weldering
Connect in succession, inner tube reinforcement 124 is placed on inside tube inner layer 123, under inner tube enhancement layer 122, be embedded in inside tube outer layer 121, inner tube
Reinforcement 124 enables to inner tube 1 and is not elongated in drawing process, while the effect with bracing wire so that guiding catheter is past
One direction bending.
A kind of concrete structure of outer tube 3 is disclosed in one embodiment, and which includes：Linkage section 31 and outer tube body
32.Wherein, linkage section 31 is used for being fixedly linked with inner tube 1, and outer tube body 32 is connected with linkage section 31.In practice can basis
The connected mode of linkage section 31 and inner tube 1 selects the unlike material of linkage section 31.
Outer tube body 32 disclosed above is specifically included：Outer inner tube layer 323, outer outer tube layer 321 and outer tube enhancement layer 322.
Wherein, outer inner tube layer 323 forms the passage of sheathed inner tube 1, and the inside tube inner layer 323 is polytetrafluoroethylene floor or nylon layer, with
Ensure the inner wall smooth of outer tube body, 3 internal diameter of outer tube is 0.86mm～5.56mm, thickness is 0.02mm～0.1mm.Outer outer tube layer
321 is the nylon layer that hardness is gradually increased from close linkage section to close driving means one end, further, it is also possible to be polyphosphazene polymer
Compound material block polyamide layer or layer of polyurethane.
Above-mentioned outer tube enhancement layer 322 is that stainless steel wire stratum reticulare or nitinol alloy wire weave near one end of linkage section 31
Net or wire stainless steel spring, or nothing enhancement layer；Mesh grid string diameter be 0.02mm～0.1mm, density be 30PPI～
100PPI (per inch mesh number)；Spring is that sub-thread circle silk or flat filament coiling are formed, and circle silk string diameter is 0.02mm～0.1mm, flat filament
String diameter is 0.02mm～0.1mm or 0.04～0.3mm.Outer tube enhancement layer 322 (mesh grid or spring) makes outer tube 3 with excellent
Fold resistance, causes outer tube 3 to have soft noninvasive head end near one end of linkage section 31 nothing outer tube enhancement layer 322, is more convenient to lead
Guiding tube enters tortuous roundabout diseased region.Outer tube body 32 near linkage section 31 one end hardness range be 25D～
55D, to ensure that outer tube body 32 is readily bent.
And outer tube enhancement layer 322 is stainless steel wire stratum reticulare or stainless steel spring or steel wire near one end of driving means,
Wherein, stainless steel spring is formed for multiple thread strands coiling, and wire can be divided into round silk and flat filament, circle silk string diameter be 0.05mm～
0.2mm, flat filament string diameter are 0.05mm～0.2mm or 0.04～0.3mm, and number of share of stock is 2～10 strands.Steel wire string diameter be 0.02mm～
0.1mm, density are 25PPI～100PPI (per inch mesh number), and specifically, outer tube body 32 is near one end of driving means
Hardness range is 55D～72D, to ensure outer tube body 32 with good support force.
On the basis of technique scheme, disclosed herein as well is the concrete structure of driving means, which includes：Handle master
Body 6, rotatable handle head 5, handle slide bar 8 and handle Turning knob 7.Wherein, handle main body 6 is hollow structure, and above-mentioned is hollow
Rotatable handle head 5 is rotated with one end of handle main body 6 and is connected, and handle slide bar 8 is in rotatable handle head 5 with handle main body 6
Portion, i.e., through rotatable handle head 5 and handle main body 6, and the handle slide bar 8 is connected by screw thread with the inwall of rotatable handle head 5
Connect, and handle slide bar 8 is connected by limiting the locating part that handle slide bar 8 is circumferentially rotated with handle main body 6, and outer tube 3 stretches into hand
It is fixedly connected in handle slide bar 8 and with handle slide bar 8.The other end of above-mentioned handle main body 6 is rotated with handle Turning knob 7 and is connected
Connect, and inner tube 1 is fixedly linked with handle Turning knob 7.
By above-mentioned setting, during work, relative with handle main body 6 turn of rotatable handle head 5 is made by rotary handle swivel head 5
Dynamic, and handle slide bar 8 is threadeded with rotary handle swivel head 5, while the handle slide bar 8 is with handle main body 6 by limiting hand
The connection of locating part that handle slide bar 8 is circumferentially rotated, therefore, when rotatable handle head 5 is rotated handle slide bar 8 along axial-movement, so as to
The outer tube 3 for realizing being fixedly linked with handle slide bar 8 is synchronous along axial-movement.And as inner tube 1 and handle Turning knob 7 are fixed,
And being fixedly linked with outer tube 3 of inner tube 1, therefore, when rotatable handle head 5 is rotated inner tube 1 can under tension so that interior
Pipe 1 drives outer tube 3 under a stretching force while bending.Herein, a kind of specific type of drive is merely provided, in practice,
Can also adopt other type of drive different with the pulling force of inner tube 1 to realize outer tube 3.
In specific embodiment, above-mentioned rotatable handle head 5 is provided with draw-in groove circumferentially, and in handle main body 6
The fixing screws 62 slided in draw-in groove are provided with, the application realizes handle by fixing screws 62 and the cooperation of draw-in groove
Swivel head 5 is rotated with handle main body 6 and is connected, the connected mode simple structure, it is easy to process.
In further embodiment, the handle slide bar 8 has the stopper slot 81 extended along axis, and sets in handle main body 6
Be equipped with the spacer pin 61 that can be slided in stopper slot 81, realize carrying out the rotation of handle slide bar 8 by spacer pin 61 spacing,
To ensure that handle slide bar 8 is along axial-movement when rotatable handle head 5 is rotated.Can also be by handle slide bar 8 and hand by above-mentioned setting
The relative displacement of handle main body 6 controls within the specific limits.
A cannelure is had on 6 excircle of handle main body, for being embedded in the first damped ring 21, increases rotatable handle head
Damping between 5 and handle main body 6, during preventing guiding catheter from bending, 8 automatic sliding of handle slide bar, and affect bending
Angle.Additionally, the second damped ring 22 is provided between handle main body 6 and handle Turning knob 7, to increase the damping of rotation,
Improve the accuracy for rotating.
Specifically, it is threaded connection between handle main body 6 disclosed herein and handle Turning knob 7, and the spiral shell
The pitch of line is less, with ensure in 7 rotation process of handle Turning knob along handle main body 6 axis displacement very little.
In practice, in order to limit the angle of the rotation of inner tube 1, ring circumferentially is provided with the periphery of handle Turning knob 7
Groove, and the steady pin 63 that can be slided in the annular groove is set in handle main body 6, steady pin 63 is inserted in annular groove so that
Radial rotating can only occur in handle main body 6 and 7 rotation process of handle Turning knob, while rotational angle is in 0-420 °.
In further embodiment, guiding catheter disclosed herein also includes to be all connected with inner tube 1 and outer tube 3
Pipe joint 9, specifically, the pipe joint 9 has standard luer fittings and band hemostasis two kinds of forms of valve union.
By above-mentioned setting, in surgical, handle main body 6 is held on the other hand, thumb and forefinger catch rotatable handle
5, clockwise rotates rotatable handle head 5；As outer tube 3 is fixed with handle slide bar 8, inner tube 1 is fixed with handle Turning knob 7,
While the axial location of handle main body 6 and rotatable handle head 5 is locked by fixing screws 62, handle main body 6 and handle Turning knob 7
Axial location be positioned pin 63 and fix；Therefore during 6 turns of 5 opposite handle main body of rotatable handle head, in rotatable handle head 5
Screw thread causes handle slide bar 8 to move relatively forward with the cooperation of 8 external screw thread of handle slide bar, and equivalent to inner tube 1 is tensed, guiding catheter is sent out
Raw bending.The good support force of outer tube enhancement layer 322 can ensure guiding catheter one end bend, and the other end do not produce waveform or
Arc-shaped bend；The anglec of rotation of joystick swivel head 5 can control the degree of crook of outer tube 3, and realizing guiding catheter bending can
Control.Simultaneously as inner tube 1 is with good 1：1 torsion transfer performance, can be real by inverse clock rotary handle Turning knob 7
The rotation of existing guiding catheter curved end；It is really achieved same guiding catheter and different diseased regions can be entered, doctor is permissible
Position pointed by regulation and control guiding catheter distal end, shortens operating time, mitigates patient suffering.
A kind of in the present invention only carry out the adjustable of guiding catheter bending, then handle arrangement design is simpler, and handle reverses rotation
Button 7 is relatively fixed with handle main body 6, it is impossible to rotated against.
The adjustable bending guiding catheter of the present invention is combined into coaxial pipe design by inner tube 1 and outer tube 3；Inner tube reinforcement
121 structure causes inner tube 1 to have the performance of bracing wire concurrently, and steel wire reinforcement structure has good tensile strength and 1:1 torsion
Performance；Outer tube 3 is strengthened by steel wire or spring reinforcement structure, it is ensured that the good reactivity in conveying guiding catheter front end.Implement
During, can control, by controlling the relative axial position of inner tube 1 and outer tube 3, the degree that delivery conduit bends；While passing through
7 rotating inner tube 1 of handle Turning knob can obtain delivery conduit 1：1 torsion transmission, with good head end reactivity.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Multiple modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (9)
1. a kind of guiding catheter, it is characterised in that include：
One end is flexible, and the inner tube (1) for delivery instrument；
It is set on the outside of said inner tube (1), and the flexible outer tube in one end (3), the flexible end of outer tube (3) is interior with described
The flexible end of pipe (1) is fixedly connected；
All it is connected with the other end of said inner tube (1) and the other end of the outer tube (3), so that said inner tube (1) is with respect to institute
State outer tube (3) to be subject in the axial direction to the driving means away from the flexible end pulling force of the outer tube (3)；
The driving means include：
Hollow handle main body (6)；
Rotate with the handle main body (6) one end and be connected, and hollow rotatable handle head (5)；
Installed in rotatable handle head (5) the handle slide bar (8) internal with the handle main body (6), handle slide bar (8)
It is threaded connection with the inwall of rotatable handle head (5), handle slide bar (8) are with the handle main body (6) by limit
Make the locating part that handle slide bar (8) circumferentially rotate to be connected, and the outer tube (3) stretch in handle slide bar (8) and with
Handle slide bar (8) are fixedly linked；
The handle Turning knob (7) being connected is rotated with the handle main body (6) other end, and said inner tube (1) is turned round with the handle
Rotate button (7) to be fixedly linked.
2. guiding catheter according to claim 1, it is characterised in that said inner tube (1) includes：
And the inner tube body (12) that outer wall is fixedly connected with the end of the outer tube (3)；
It is connected with said inner tube body (12), and the soft head of flexible inner tube (11), the soft head of said inner tube (11) offers installation
Through hole (2).
3. guiding catheter according to claim 2, it is characterised in that said inner tube body (12) includes：
The inside tube inner layer (123) of said inner tube body (12) passage is formed, said inner tube internal layer (123) is polytetrafluoroethylene floor；
The inside tube outer layer (121) being connected with the outer tube (3), said inner tube outer layer (121) are hardness by soft near said inner tube
One end of head (11) is to the nylon layer being gradually increased near one end of the driving means；
The inner tube enhancement layer (122) being arranged between said inner tube internal layer (123) and said inner tube outer layer (121), said inner tube
Enhancement layer (122) is oven wire mesh blanket or spring；
The inner tube reinforcement (124) being embedded in said inner tube outer layer (121).
4. guiding catheter according to claim 1, it is characterised in that outer tube (3) include：
The linkage section (31) being fixedly linked with said inner tube (1)；
Outer tube body (32) connected with the linkage section (31).
5. guiding catheter according to claim 4, it is characterised in that outer tube body (32) include：
The outer inner tube layer (323) of the passage for sheathed said inner tube (1) is formed, described outer inner tube layer (323) are polytetrafluoroethyl-ne
Alkene layer；
Outer outer tube layer (321), described outer outer tube layer (321) are that hardness drives dress near linkage section (31) near described
The nylon layer that the one end that puts is gradually increased；
The outer tube enhancement layer (322) being arranged between outer outer tube layer (321) and outer inner tube layer (323), the outer tube
Enhancement layer (322) is oven wire mesh blanket or spring.
6. guiding catheter according to claim 1, it is characterised in that rotatable handle head (5) are provided with and circumferentially prolong
The draw-in groove that stretches, is provided with sliding in the draw-in groove so that the rotatable handle head (5) and institute on handle main body (6)
State the fixing screws (62) that handle main body (6) rotates connection.
7. guiding catheter according to claim 1, it is characterised in that the locating part includes：
The stopper slot (81) for being arranged on described handle slide bar (8) and extending along axis；
It is arranged in the handle main body (6) and can slides in the stopper slot (81) and limit described handle slide bar (8) turn
Dynamic spacer pin (61).
8. guiding catheter according to claim 1, it is characterised in that rotatable handle head (5) and the handle main body
(6) between, and damped ring is provided between the handle main body (6) and handle Turning knob (7).
9. guiding catheter according to claim 1, it is characterised in that also include and said inner tube (1) and the outer tube (3)
The pipe joint (9) being all connected with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537534.8A CN104224314B (en) | 2014-10-13 | 2014-10-13 | A kind of guiding catheter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537534.8A CN104224314B (en) | 2014-10-13 | 2014-10-13 | A kind of guiding catheter |
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| Publication Number | Publication Date |
|---|---|
| CN104224314A CN104224314A (en) | 2014-12-24 |
| CN104224314B true CN104224314B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410537534.8A Active CN104224314B (en) | 2014-10-13 | 2014-10-13 | A kind of guiding catheter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105361985B (en) * | 2015-11-25 | 2018-08-17 | 常州乐奥医疗科技股份有限公司 | It is a kind of can singlehanded accurate release holder transport system |
| CN106037926B (en) * | 2016-05-16 | 2020-07-24 | 安隽医疗科技(南京)有限公司 | Needle bar telescopic adjusting system of adjustable water injection ablation electrode needle |
| CN107837071A (en) * | 2017-10-26 | 2018-03-27 | 广州永士达医疗科技有限责任公司 | A kind of uterus OCT conduits and the uterus OCT equipment with pumpback function |
| CN111317563B (en) * | 2018-12-17 | 2022-02-25 | 赛诺微医疗科技（浙江）有限公司 | Microwave ablation catheter body, manufacturing method and microwave ablation catheter adopting same |
| CN111610624B (en) * | 2019-02-25 | 2022-04-01 | 威强电工业电脑股份有限公司 | Endoscope with lens steering structure |
| CN117653828A (en) * | 2021-12-30 | 2024-03-08 | 杭州德柯医疗科技有限公司 | Interventional injection device and interventional injection system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6579279B1 (en) * | 1999-09-24 | 2003-06-17 | Omnisonics Medical Technologies, Inc. | Steerable catheter device |
| US20030036698A1 (en) * | 2001-08-16 | 2003-02-20 | Robert Kohler | Interventional diagnostic catheter and a method for using a catheter to access artificial cardiac shunts |
| GB0320016D0 (en) * | 2003-08-27 | 2003-10-01 | Smiths Group Plc | Embryo transfer catheters and assemblies |
| US20060079787A1 (en) * | 2004-09-30 | 2006-04-13 | Whiting James S | Transmembrane access systems and methods |
| US8118803B1 (en) * | 2006-12-19 | 2012-02-21 | Abbott Cardiovascular Systems Inc. | Deflectable catheter assembly |
| CN203060553U (en) * | 2013-01-28 | 2013-07-17 | 湖南埃普特医疗器械有限公司 | Bending controllable guiding catheter |
| CN204147116U (en) * | 2014-10-13 | 2015-02-11 | 湖南埃普特医疗器械有限公司 | A kind of guiding catheter |
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