CN104224314A - Guide catheter - Google Patents
Guide catheter Download PDFInfo
- Publication number
- CN104224314A CN104224314A CN201410537534.8A CN201410537534A CN104224314A CN 104224314 A CN104224314 A CN 104224314A CN 201410537534 A CN201410537534 A CN 201410537534A CN 104224314 A CN104224314 A CN 104224314A
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- China
- Prior art keywords
- outer tube
- interior pipe
- handle
- layer
- tube
- Prior art date
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Classifications
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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
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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
- A61M25/0147—Tip steering devices with movable mechanical means, e.g. pull wires
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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
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0662—Guide tubes
Abstract
The invention discloses a guide catheter. The guide catheter comprises an inner tube, an outer tube and a drive device, wherein one end of the inner tube can be bent and is used for conveying instruments, the inner tube is sleeved with the outer tube, one end of the outer tube can be bent, the bendable end of the outer tube and the bendable end of the inner tube are fixedly connected, and the drive device is connected with the other end of the inner tube and the other end of the outer tube, the drive device axially pulls the inner tube in the direction far away from the bendable end of the outer tube relative to the outer tube. When the guide catheter is used, the drive device is started, pulling force is exerted on the inner tube, one end of the outer tube and one end of the inner tube are both bendable, the outer tube is tensioned under the action of the pulling force, so that the inner tube is driven to be bent at the same time, and the angle of the guide catheter can be adjusted by adjusting the pulling force of the drive device. The problem that during surgery, the guide catheter is replaced repeatedly is solved, the surgery time is shortened, and efficiency is improved. Due to the fact that the angle of the guide catheter can be changed, it can be guaranteed that the guide catheter meets different angle requirements, and the success rate of surgery is increased. In addition, the bendable end of the guide catheter is rotatable.
Description
Technical field
The present invention relates to technical field of medical instruments, in particular, relate to a kind of guiding catheter.
Background technology
In atrial fibrillation and other complicated arrhythmia operations, guiding sheath usually need be used to be pointed to by electrode catheter in pulmo ostium venosum cordis or left room or other positions.But because the dissection operation of left pulmonary vein oral area is comparatively complicated, the position guiding sheath had in anatomic course is difficult to arrive, and the sheath applied clinically is at present the sheath of fixing camber, need the guiding sheath constantly changing different bending can arrive diverse location to realize electrode catheter, this makes operating time longer, even may cannot reach desirable state by electrode catheter, cause operating time length to complete.
Therefore, how to provide the guiding catheter that a kind of camber is adjustable, to shorten operating time, raising the efficiency is the current technical issues that need to address of those skilled in the art.
Summary of the invention
In view of this, the invention provides the guiding catheter that a kind of camber is adjustable, to shorten operating time, raise the efficiency.
For achieving the above object, the invention provides following technical scheme:
A kind of guiding catheter, it comprises:
One end is flexible, and for managing in delivery instrument;
Be set in outside described interior pipe, and the flexible outer tube in one end, the flexible end of described outer tube is fixedly connected with the flexible end of described interior pipe;
All be connected with the other end of described outer tube with the other end of described interior pipe, be subject in the axial direction to the driving device away from the flexible end pulling force of described outer tube relative to described outer tube to make described interior pipe.
Preferably, in above-mentioned guiding catheter, described interior pipe comprises:
And the interior pipe body that outer wall is connected with the end winding support of described outer tube;
Be connected with described interior pipe body, and the soft head of flexible interior pipe, the soft head of described interior pipe offers installation through hole.
Preferably, in above-mentioned guiding catheter, described interior pipe body comprises:
Form the inside tube inner layer of described interior pipe body passage, described inside tube inner layer is polytetrafluoroethylene floor;
The inside tube outer layer be connected with described outer tube, described inside tube outer layer is that hardness is by the nylon layer increased gradually to the one end near described driving device near one end of the soft head of described interior pipe;
Be arranged on the interior pipe enhancement Layer between described inside tube inner layer and described inside tube outer layer, described interior pipe enhancement Layer is oven wire mesh blanket or spring;
Be embedded in the interior pipe reinforcement in inside tube outer layer.
Preferably, in above-mentioned guiding catheter, described outer tube comprises:
The linkage section be fixedly linked with described interior pipe;
The outer tube body be connected with described linkage section.
Preferably, in above-mentioned guiding catheter, described outer tube body comprises:
Form the outer inner tube layer of the passage being used for sheathed described interior pipe, described outer inner tube layer is polytetrafluoroethylene floor;
Outer outer tube layer, described outer outer tube layer is that hardness is by the nylon layer increased gradually to the one end near described driving device near described linkage section;
Be arranged on the outer tube enhancement Layer between described outer outer tube layer and described outer inner tube layer, described outer tube enhancement Layer is oven wire mesh blanket or spring.
Preferably, in above-mentioned guiding catheter, described driving device comprises:
The handle main body of hollow;
Be rotationally connected with described handle main body one end, and the rotatable handle head of hollow;
Be arranged on the handle slide bar of described rotatable handle head and described handle main body inside, the inwall of described handle slide bar and described rotatable handle head is threaded connection, described handle slide bar and described handle main body are connected by the locating part limiting described handle slide bar circumference and rotates, and described outer tube to stretch into described handle slide bar interior and be fixedly linked with described handle slide bar;
The handle Turning knob be rotationally connected with the described handle main body other end, described interior pipe and described handle Turning knob are fixedly linked.
Preferably, in above-mentioned guiding catheter, described rotatable handle head is provided with draw-in groove circumferentially, described handle main body is provided with the hold-down screw that can slide described handle rotary head and described handle main body are rotationally connected in described draw-in groove.
Preferably, in above-mentioned guiding catheter, described locating part comprises:
To be arranged on described handle slide bar and along the stopper slot of Axis Extension;
Be arranged on and described handle main body can slide in described stopper slot and limit the spacer pin that described handle slide bar rotates.
Preferably, in above-mentioned guiding catheter, between described rotatable handle head and described handle main body, and be provided with damped ring between described handle main body and described handle Turning knob.
Preferably, in above-mentioned guiding catheter, also comprise the catheter adapter be all connected with described interior pipe and described outer tube.
Known via above-mentioned technical scheme, the invention discloses a kind of guiding catheter, it comprises: one end flexible and in delivery instrument manage; Be set in the flexible outer tube in outside interior pipe and one end, and the flexible end of this outer tube is fixedly connected with the flexible end of interior pipe; All be connected with the other end of interior pipe and the other end of outer tube, and interior pipe is subject in the axial direction to the driving device away from the flexible end pulling force of outer tube relative to outer tube.By above-mentioned setting, when using guiding catheter disclosed in the present application, start the pulling force that driving device makes interior pipe be subject to, and one end of outer tube and interior pipe is all flexible, therefore, can under the effect of pulling force, outer tube is strained and drives interior pipe to bend simultaneously, in practice by regulating the pulling force size of driving device, realizing the angular adjustment that outer tube bends with interior pipe, namely making this guiding catheter achieve angle adjustable, solve operator in operation process and constantly change the process of guiding catheter, therefore, the time of operation can be shortened, raise the efficiency.In addition, the angle of this guiding catheter can realize changing at any angle, therefore, can ensure that this guiding catheter can meet different angle requirement, improves success rate of operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The initial shape body structure schematic diagram of Fig. 1 guiding catheter disclosed in the embodiment of the present invention;
The bending body structure schematic diagram of Fig. 2 guiding catheter disclosed in the embodiment of the present invention;
The bending maximum angle shape body structure schematic diagram of Fig. 3 guiding catheter disclosed in the embodiment of the present invention;
The structural representation of Fig. 4 interior pipe of guiding catheter disclosed in the embodiment of the present invention;
The structural representation of Fig. 5 outer tube of guiding catheter disclosed in the embodiment of the present invention;
The structural representation that the outer tube of Fig. 6 guiding catheter disclosed in the embodiment of the present invention is connected with interior pipe;
The structural representation of Fig. 7 driving device of guiding catheter disclosed in the embodiment of the present invention;
Fig. 8 disclosed in the embodiment of the present invention guiding catheter structural representation.
Detailed description of the invention
Core of the present invention is to provide the adjustable guiding catheter of a kind of camber, to shorten operating time, raises the efficiency.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to shown in Fig. 1-Fig. 8, the invention discloses a kind of guiding catheter, it comprises: one end is flexible and for pipe in delivery instrument 1; Be set in the flexible outer tube 3 in outside interior pipe 1 and one end, and the flexible end of this outer tube 3 is fixedly connected with the flexible end of interior pipe 1; Interior pipe 1 is subject in the axial direction to the driving device away from the flexible end pulling force of outer tube 3 relative to outer tube 3.By above-mentioned setting, when using guiding catheter disclosed in the present application, start the pulling force that driving device makes interior pipe 1 be subject to, and one end of outer tube 3 and interior pipe 1 is all flexible, therefore, can under the effect of pulling force, outer tube 3 is made to strain and drive interior pipe 1 to bend simultaneously, in practice by regulating the pulling force size of driving device, realizing the angular adjustment that outer tube 3 is bending with interior pipe 1, namely making this guiding catheter achieve angle adjustable, solve operator in operation process and constantly change the process of guiding catheter, therefore, the time of operation can be shortened, raise the efficiency.In addition, the angle of this guiding catheter can realize changing at any angle, therefore, can ensure that this guiding catheter can meet different angle requirement, improves success rate of operation.
Guiding catheter disclosed in the application is tubulose, and length is 400mm ~ 1450mm, and internal diameter is 0.4mm ~ 5.0mm, and external diameter is 1.2mm ~ 7mm.
In specific embodiment, above-mentioned interior pipe 1 comprises: interior pipe body 12 and interior pipe soft 11.Wherein, the outer wall of interior pipe body 12 is connected with the end winding support of outer tube 3, particularly, also can adopt bonding by thermoplastic fusion, as long as pipe body 12 is connected with outer tube 3 is stable in ensureing.Above-mentioned interior pipe soft 11 is connected with interior pipe body 12, and can bend, and the sidewall being fixed on interior pipe soft 11 of conveniently apparatus is provided with through hole 2 to fix apparatus.
In further embodiment, this interior pipe body 12 comprises: inside tube inner layer 123, inside tube outer layer 121 and interior pipe enhancement Layer 122.Wherein, inside tube inner layer 123 forms interior pipe body 12 passage, for passing for apparatus, and this inside tube inner layer 123 is politef, has the advantages that coefficient of friction is little, makes conduit cavity smooth, facilitate other apparatuses or conduit conveying, particularly, the internal diameter of inside tube inner layer 123 is 0.4mm ~ 5.0mm, and thickness is 0.02mm ~ 0.1mm.The outside of inside tube outer layer 121 is connected with outer tube 3 end, and the nylon layer that this inside tube outer layer 121 is hardness to be increased to the one end near driving device gradually by the one end near interior pipe soft 11, in addition, can also be macromolecule polymer material block polyamide layer or layer of polyurethane.Adopt and increase gradually to one end hardness near driving device by near one end of interior pipe soft 11, can ensure that interior pipe body 12 is at one end flexible relative near interior pipe soft 11, and good support force can be had near one end of driving device, particularly, intensity is within the scope of 25D ~ 72D, and the external diameter of inside tube outer layer 121 is 0.8mm ~ 5.5mm.Interior pipe enhancement Layer 122 is arranged between inside tube inner layer 123 and inside tube outer layer 121, and this interior pipe enhancement Layer 122 is stainless steel silk stratum reticulare or nitinol alloy wire woven mesh layer, string diameter is 0.02mm ~ 0.1mm, density is 25PPI ~ 100PPI (per inch order number), and what woven wire cloth made conduit have excellent fracture resistance and a 1:1 turns round control performance.
Interior pipe 1 adopts ring-type platinumiridio, platinum, gold, tantalum, tungsten becket material away from the development indicating 125 of one end of driving device; Development indicating 125 embeds inside tube outer layer 121 one end near interior pipe soft 11; Interior pipe reinforcement 124 adopts the materials such as rustless steel, Nitinol, tungsten, cochrome to make, and is flat filament shape; Interior pipe reinforcement 124 and development indicating 125 are by being welded to connect, interior pipe reinforcement 124 is placed on inside tube inner layer 123, interior pipe enhancement Layer 122 times, be embedded in inside tube outer layer 121, interior pipe reinforcement 124 can make interior pipe 1 not be elongated in drawing process, there is the effect of bracing wire simultaneously, make guiding catheter bending toward a direction.
Disclose a kind of concrete structure of outer tube 3 in one embodiment, it comprises: linkage section 31 and outer tube body 32.Wherein, linkage section 31 is for being fixedly linked with interior pipe 1, and outer tube body 32 is connected with linkage section 31.The unlike material of linkage section 31 can be selected in practice according to linkage section 31 and the connected mode of interior pipe 1.
Above-mentioned disclosed outer tube body 32 specifically comprises: 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 interior pipe 1, and this inside tube inner layer 323 is polytetrafluoroethylene floor or nylon layer, and to ensure the inner wall smooth of outer tube body, outer tube 3 internal diameter is 0.86mm ~ 5.56mm, and thickness is 0.02mm ~ 0.1mm.Outer outer tube layer 321 is the nylon layer that hardness is increased to close driving device one end gradually by close linkage section, in addition, can also be macromolecule polymer material block polyamide layer or layer of polyurethane.
Above-mentioned outer tube enhancement Layer 322 is stainless steel silk stratum reticulare or nitinol alloy wire mesh grid or tinsel stainless steel spring near one end of linkage section 31, or without enhancement Layer; Mesh grid string diameter is 0.02mm ~ 0.1mm, and density is 30PPI ~ 100PPI (per inch order number); Spring is that sub-thread circle silk or flat filament coiling form, and circle silk string diameter is 0.02mm ~ 0.1mm, and 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 have excellent fold resistance, makes outer tube 3 have soft noinvasive head end near one end of linkage section 31 without outer tube enhancement Layer 322, and more convenient guiding catheter enters tortuous roundabout diseased region.Outer tube body 32 is 25D ~ 55D in the hardness range of the one end near linkage section 31, to ensure that outer tube body 32 is easy to bending.
And outer tube enhancement Layer 322 is stainless steel silk stratum reticulare or stainless steel spring or steel wire near one end of driving device, wherein, stainless steel spring is that multiple thread strands coiling forms, tinsel can be divided into round silk and flat filament, circle silk string diameter is 0.05mm ~ 0.2mm, flat filament string diameter is 0.05mm ~ 0.2mm or 0.04 ~ 0.3mm, and number of share of stock is 2 ~ 10 strands.Steel wire string diameter is 0.02mm ~ 0.1mm, and density is 25PPI ~ 100PPI (per inch order number), and particularly, outer tube body 32 is 55D ~ 72D in the hardness range of the one end near driving device, to ensure that outer tube body 32 has good support force.
On the basis of technique scheme, disclosed herein as well is the concrete structure of driving device, it comprises: handle main body 6, rotatable handle head 5, handle slide bar 8 and handle Turning knob 7.Wherein, handle main body 6 is hollow structure, above-mentioned hollow handle swivel head 5 is rotationally connected with one end of handle main body 6, it is inner with handle main body 6 that handle slide bar 8 is arranged on rotatable handle head 5, namely through rotatable handle head 5 and handle main body 6, and this handle slide bar 8 is threaded connection with the inwall of rotatable handle head 5, and handle slide bar 8 and handle main body 6 are connected by limit the circumferential locating part rotated of handle slide bar 8, and outer tube 3 to stretch into handle slide bar 8 interior and be fixedly connected with handle slide bar 8.The other end and the handle Turning knob 7 of above-mentioned handle main body 6 are rotationally connected, and interior pipe 1 and handle Turning knob 7 are fixedly linked.
By above-mentioned setting, during work, by rotary handle swivel head 5, rotatable handle head 5 and handle main body 6 are relatively rotated, and handle slide bar 8 is threaded with rotary handle swivel head 5, this handle slide bar 8 is connected by limiting the circumferential locating part rotated of handle slide bar 8 with handle main body 6 simultaneously, therefore, when rotatable handle head 5 rotates, handle slide bar 8 is along axial-movement, thus realizes synchronous along axial-movement with the outer tube 3 that handle slide bar 8 is fixedly linked.And fix due to interior pipe 1 and handle Turning knob 7, and being fixedly linked with outer tube 3 of interior pipe 1, therefore, when rotatable handle head 5 rotates, interior pipe 1 can under tension, thus makes interior pipe 1 drive outer tube 3 to bend under a stretching force simultaneously., merely provide a kind of concrete type of drive herein, in practice, other type of drive also can be adopted different with the pulling force of interior pipe 1 to realize outer tube 3.
In specific embodiment, above-mentioned rotatable handle head 5 is provided with draw-in groove circumferentially, and handle main body 6 is provided with the hold-down screw 62 that can slide in draw-in groove, the application is coordinated by hold-down screw 62 and draw-in groove, realize rotatable handle head 5 to be rotationally connected with handle main body 6, this connected mode structure is simple, is easy to processing.
In further embodiment, this handle slide bar 8 has the stopper slot 81 along Axis Extension, and handle main body 6 is provided with the spacer pin 61 that can slide in stopper slot 81, realize carrying out spacing to the rotation of handle slide bar 8 by spacer pin 61, to ensure that handle slide bar 8 is along axial-movement when rotatable handle head 5 rotates.The relative displacement of handle slide bar 8 with handle main body 6 can also be controlled within the specific limits by above-mentioned setting.
Handle main body 6 excircle having a cannelure, for embedding the first damped ring 21, increasing the damping between rotatable handle head 5 and handle main body 6, prevent in the process that guiding catheter is bending, handle slide bar 8 automatic sliding, and affect angle of bend.In addition, between handle main body 6 and handle Turning knob 7, be provided with the second damped ring 22, to increase the damping of rotation, improve the accuracy rotated.
Particularly, handle main body 6 disclosed in the application and being threaded connection between handle Turning knob 7, and the pitch of this screw thread is less, very little to ensure the displacement along the axis of handle main body 6 in handle Turning knob 7 rotation process.In practice, in order to limit the angle that interior pipe 1 rotates, the periphery of handle Turning knob 7 is provided with annular groove circumferentially, and the steady pin 63 that can slide in this annular groove is set in handle main body 6, steady pin 63 is inserted in annular groove, make radial rotating to occur in handle main body 6 and handle Turning knob 7 rotation process, rotational angle is in 0-420 ° simultaneously.
Further in embodiment, guiding catheter disclosed in the application also comprises the catheter adapter 9 be all connected with interior pipe 1 and outer tube 3, and particularly, this catheter adapter 9 has standard luer fittings and band haemostatic valve to connect first two form.
By above-mentioned setting, when surgical, one holds handle main body 6, and thumb and forefinger catch rotatable handle head 5, clockwise turning handle swivel head 5; Because outer tube 3 and handle slide bar 8 are fixed, interior pipe 1 is fixed with handle Turning knob 7, and the axial location of handle main body 6 and rotatable handle head 5 screw 62 that is fixed is locked simultaneously, and the axial location of handle main body 6 and handle Turning knob 7 is fixed by alignment pin 63; Therefore turn in journey in rotatable handle head 5 opposite handle main body 6, rotatable handle head 5 female thread and handle slide bar 8 external screw thread coordinate and make that handle slide bar 8 is relative to be moved forward, and be equivalent to strain interior pipe 1, guiding catheter bends.The support force that outer tube enhancement Layer 322 is good can ensure that guiding catheter one end bends, and the other end does 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, realizes guiding catheter and bends controlled.Meanwhile, transmit performance because interior pipe 1 has good 1:1 torsion, the rotation of guiding catheter curved end can be realized by inverse clock rotary handle Turning knob 7; Really reach same guiding catheter and can enter different diseased regions, doctor can regulate and control the position pointed by guiding catheter far-end, shortens operating time, alleviates patient suffering.
A kind ofly in the present invention only carry out bending adjustable of guiding catheter, then handle arrangement design is simpler, and handle Turning knob 7 is relative with handle main body 6 fixing, and relative rotation can not occur.
Adjustable bending guiding catheter of the present invention is combined into coaxial pipe design by interior pipe 1 with outer tube 3; The structure of interior pipe reinforcement 121 makes interior pipe 1 have the performance of bracing wire concurrently, and steel wire is strengthened structure and had good tensile strength and the twisting property of 1:1; Outer tube 3 is strengthened by steel wire or structure strengthened by spring, ensures the reactivity that conveying guiding catheter front end is good.In implementation process, the bending degree of delivery conduit can be controlled by controlling interior pipe 1 and the relative axial position of outer tube 3; The torsion transmission of delivery conduit 1:1 can be obtained simultaneously by handle Turning knob 7 rotating inner tube 1, there is good head end reactive.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a guiding catheter, is characterized in that, comprising:
One end is flexible, and for managing (1) in delivery instrument;
Be set in described interior pipe (1) outside, and the flexible outer tube in one end (3), the flexible end of described outer tube (3) is fixedly connected with the flexible end of described interior pipe (1);
All be connected with the other end of described outer tube (3) with the other end of described interior pipe (1), be subject in the axial direction to the driving device away from the flexible end pulling force of described outer tube (3) relative to described outer tube (3) to make described interior pipe (1).
2. guiding catheter according to claim 1, is characterized in that, described interior pipe (1) comprising:
And the interior pipe body (12) that outer wall is connected with the end winding support of described outer tube (3);
Be connected with described interior pipe body (12), and the soft head of flexible interior pipe (11), the soft head of described interior pipe (11) offers installs through hole (2).
3. guiding catheter according to claim 2, is characterized in that, described interior pipe body (12) comprising:
Form the inside tube inner layer (123) of described interior pipe body (12) passage, described inside tube inner layer (123) is polytetrafluoroethylene floor;
The inside tube outer layer (121) be connected with described outer tube (3), described inside tube outer layer (121) is for hardness is by the nylon layer increased gradually to the one end near described driving device near one end of the soft head of described interior pipe (11);
Be arranged on the interior pipe enhancement Layer (122) between described inside tube inner layer (123) and described inside tube outer layer (121), described interior pipe enhancement Layer (122) is oven wire mesh blanket or spring;
Be embedded in the interior pipe reinforcement (124) in described inside tube outer layer (121).
4. guiding catheter according to claim 1, is characterized in that, described outer tube (3) comprising:
The linkage section (31) be fixedly linked with described interior pipe (1);
The outer tube body (32) be connected with described linkage section (31).
5. guiding catheter according to claim 4, is characterized in that, described outer tube body (32) comprising:
Form the outer inner tube layer (323) of the passage being used for sheathed described interior pipe (1), described outer inner tube layer (323) is polytetrafluoroethylene floor;
Outer outer tube layer (321), described outer outer tube layer (321) is for hardness is by the nylon layer increased gradually to the one end near described driving device near described linkage section (31);
Be arranged on the outer tube enhancement Layer (322) between described outer outer tube layer (321) and described outer inner tube layer (323), described outer tube enhancement Layer (322) is oven wire mesh blanket or spring.
6. the guiding catheter according to any one of claim 1-5, is characterized in that, described driving device comprises:
The handle main body (6) of hollow;
Be rotationally connected with described handle main body (6) one end, and the rotatable handle head (5) of hollow;
Be arranged on the handle slide bar (8) that described rotatable handle head (5) is inner with described handle main body (6), described handle slide bar (8) is threaded connection with the inwall of described rotatable handle head (5), described handle slide bar (8) and described handle main body (6) are connected by the locating part limiting described handle slide bar (8) circumference and rotates, and described outer tube (3) to stretch into described handle slide bar (8) interior and be fixedly linked with described handle slide bar (8);
The handle Turning knob (7) be rotationally connected with described handle main body (6) other end, described interior pipe (1) and described handle Turning knob (7) are fixedly linked.
7. guiding catheter according to claim 6, it is characterized in that, described rotatable handle head (5) is provided with draw-in groove circumferentially, described handle main body (6) is provided with the hold-down screw (62) that can slide described handle rotary head (5) and described handle main body (6) are rotationally connected in described draw-in groove.
8. guiding catheter according to claim 6, is characterized in that, described locating part comprises:
Be arranged on described handle slide bar (8) upper and along the stopper slot (81) of Axis Extension;
Be arranged on and described handle main body (6) can slide in described stopper slot (81) and limit the spacer pin (61) that described handle slide bar (8) rotates.
9. guiding catheter according to claim 6, it is characterized in that, between described rotatable handle head (5) and described handle main body (6), and be provided with damped ring between described handle main body (6) and described handle Turning knob (7).
10. guiding catheter according to claim 6, is characterized in that, also comprises the catheter adapter (9) be all connected with described interior pipe (1) and described outer tube (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410537534.8A CN104224314B (en) | 2014-10-13 | 2014-10-13 | A kind of guiding catheter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410537534.8A CN104224314B (en) | 2014-10-13 | 2014-10-13 | A kind of guiding catheter |
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| CN104224314A true CN104224314A (en) | 2014-12-24 |
| CN104224314B CN104224314B (en) | 2017-03-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105361985A (en) * | 2015-11-25 | 2016-03-02 | 常州乐奥医疗科技有限公司 | Delivery system capable of precisely releasing scaffold with single hand |
| CN106037926A (en) * | 2016-05-16 | 2016-10-26 | 安隽医疗科技(南京)有限公司 | Needle rod telescopic regulating 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 |
| CN111317563A (en) * | 2018-12-17 | 2020-06-23 | 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 |
| CN111610624A (en) * | 2019-02-25 | 2020-09-01 | 威强电工业电脑股份有限公司 | Endoscope with lens steering structure |
| CN114259627A (en) * | 2021-12-30 | 2022-04-01 | 杭州德柯医疗科技有限公司 | Interventional injection device and interventional injection system |
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| CN105361985A (en) * | 2015-11-25 | 2016-03-02 | 常州乐奥医疗科技有限公司 | Delivery system capable of precisely releasing scaffold with single hand |
| 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 |
| CN106037926A (en) * | 2016-05-16 | 2016-10-26 | 安隽医疗科技(南京)有限公司 | Needle rod telescopic regulating 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 |
| CN111317563A (en) * | 2018-12-17 | 2020-06-23 | 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 |
| 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 |
| CN111610624A (en) * | 2019-02-25 | 2020-09-01 | 威强电工业电脑股份有限公司 | Endoscope with lens steering structure |
| CN114259627A (en) * | 2021-12-30 | 2022-04-01 | 杭州德柯医疗科技有限公司 | Interventional injection device and interventional injection system |
| CN114259627B (en) * | 2021-12-30 | 2023-12-08 | 杭州德柯医疗科技有限公司 | Interventional injection device and interventional injection system |
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