CN204864477U - Guide pipe - Google Patents
Guide pipe Download PDFInfo
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- CN204864477U CN204864477U CN201520563967.0U CN201520563967U CN204864477U CN 204864477 U CN204864477 U CN 204864477U CN 201520563967 U CN201520563967 U CN 201520563967U CN 204864477 U CN204864477 U CN 204864477U
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- guiding catheter
- handle
- curved segment
- bracing wire
- catheter
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Abstract
The application discloses guide pipe includes head end, tail end and is used for connecting the head end with the main part of tail end, guide pipe has the pipe chamber, still includes: the first end of transferring curved section with the head end is connected, and the second end of the curved section of accent is connected towards the tip of guide pipe's head end with guide pipe's main part, transfer the well chambers of the heart of curved section to be linked together with the pipe chamber, transfer curved subassembly, including the handle, the one end of acting as go -between runs through the main part and transfers curved section and be connected with transferring the first end of bending the section, and the other end of acting as go -between is drawn forth and is connected with the handle via guide pipe's tail end, and the handle can be adjusted to act as go -between and arrange the main part in and transfer the length in curved section. Because the direct bending angle who utilizes the curved section of change accent of acting as go -between to can make guide pipe's head end stretch into the pathological change position according to the angle of patient's physiology structural adjustment guide pipe's head end, can improve guide pipe's suitability.
Description
Technical field
This utility model relates to technical field of medical instruments, particularly relates to a kind of guiding catheter.
Background technology
Along with the development getting involved medical skill, intervention class diagnosis and treatment conduit particularly guiding catheter has been widely used in human body interventional programs.Generally speaking, because the difference of human anatomic structure, doctor often needs intervention diagnosis and therapy conduit by various difformity, structure, size to set up diseased region and external passage in patient body.
But, when Clinical practice, even if the guiding catheter that the far-end developed various basis specific Human Physiology anatomical structure and design is moulding in advance, also cannot adapt to completely with the physiological anatomic architecture of individuation.For this reason; in operation process; conduit can be withdrawn from and again select the pre-moulding guiding catheter of other shapes by doctor usually; in the process changing guiding catheter; add the probability that difficulty that doctor carries out performing the operation and the expense that sufferer is born and sufferer lumen organization are impaired undoubtedly, even can extend doctor and sufferer raying time.
Therefore, how improving the suitability getting involved class diagnosis and treatment conduit is those skilled in the art's technical issues that need to address.
Utility model content
In view of this, the object of the application is to provide a kind of guiding catheter, according to the curved shape of the physiological anatomic architecture adjustment guiding catheter of personalization, thus can improve the suitability of guiding catheter.
This application provides a kind of guiding catheter, comprise head end, tail end and the main part for connecting described head end and described tail end, described guiding catheter has catheter lumen, described guiding catheter can be used in inserting arteria coronaria, described guiding catheter also comprises: adjust curved segment, the first end of described tune curved segment is connected with described head end, and the second end of described tune curved segment is connected with the end of the main part of described guiding catheter towards the head end of described guiding catheter; The center cavity of described tune curved segment is connected with described catheter lumen; Adjust curved assembly, comprise handle, one end of described bracing wire is run through described main part with described tune curved segment and is connected with the first end of described tune curved segment, the other end of described bracing wire is drawn via the tail end of described guiding catheter and is connected with described handle, and described handle can adjust described bracing wire and be placed in length in described main part and described tune curved segment.
Preferably, described main part and described tune curved segment include be surrounded on described center cavity arrange internal layer, be surrounded on described internal layer arrange enhancement Layer and be surrounded on described enhancement Layer arrange skin, described tune curved segment and described main part are also provided with bracing wire chamber, described bracing wire chamber is arranged between described enhancement Layer and described internal layer, described bracing wire chamber is provided with anchor ring towards the end of described head end, and described bracing wire runs through described bracing wire chamber and is fixedly connected with described anchor ring.
Preferably, described tune curved segment and described main part include bracing wire chamber described at least one, each described bracing wire chamber is provided with described anchor ring, each described anchor ring all has corresponding described bracing wire to be fixedly connected with it, and described adjustment handle is placed in the length of described bracing wire intracavity for adjusting bracing wire described in every bar.
Preferably, the cross section that the cross section of described catheter lumen and the cross section of described center cavity are circular cross section or described catheter lumen cross section and described center cavity is non-circular cross sections.
Preferably, described main part is straight body portion or described main part is bending main part.
Preferably, described head end is that flexible plastic head end or described head end comprise plastics head end and be connected with described flexible plastic head end with one end, the plastic flexible pipe section that the other end is connected with the first end of described tune curved segment, described plastic flexible pipe section comprises development indicating and enhancement Layer.
Preferably, the enhancement Layer of described anchor ring and described plastic flexible pipe section is that integral type is arranged.
Preferably, the angle of bend of described tune curved segment is greater than 0 ° and is not more than 270 °.
Preferably, described tune curved segment is that the soft hardness of curved segment or described tune curved segment of adjusting increases progressively step by step along the first end of described tune curved segment to the second end of described tune curved segment.
Preferably, a described bracing wire chamber is provided with between described enhancement Layer and described internal layer, described handle comprises housing, spiral organ of Corti and is all arranged at the guide pad of described enclosure interior, screw rod and steel pipe, wherein: the end of thread of described screw rod is connected by threaded engagement with described spiral organ of Corti, stiff end and the described guide pad of described screw rod are fixedly connected; Described bracing wire is run through described steel pipe and is fixedly connected by the grooving of described steel pipe and the described stiff end of described screw rod; Front end and the described anchor tip of described steel pipe are fixedly connected, and rear end and the described guide pad of described steel pipe are fixedly connected, and described steel pipe runs through described screw rod; Described guide pad and described housing are fixedly connected.
Preferably, two described bracing wire chambeies are provided with between described enhancement Layer and described internal layer, described handle comprises that handle is pullover, handle driver plate, two anchorage shoes, dampened disk, handle upper cover, embedding lid, damped ring and handle lower covers, wherein: described handle driver plate is set on the boss of described handle upper cover, and described handle driver plate can along the central rotation of described boss; The excircle of described handle driver plate offers cannelure, and described damped ring embeds described cannelure, and described handle driver plate has two for stirring the regulating part that described handle driver plate rotates; Described dampened disk and described handle driver plate abut against and the boss of described dampened disk and described handle upper cover fits, and securing member run through described dampened disk, handle upper cover boss and be fixedly connected with described embedding lid; Two described anchorage shoes are all arranged at described handle driver plate, and the described bracing wire being positioned at two described bracing wire chambeies is connected with corresponding described anchorage shoe respectively by the described regulating part corresponded; The tail end of described guiding catheter is connected with strain relief sleeve pipe; Also comprise the catheter adapter being exposed to described handle end, described catheter adapter and described strain relief sleeve pipe embed in the draw-in groove between described handle upper cover and described handle lower cover.
Preferably, described guiding catheter also comprises bending adjustor, described bending adjustor comprises wrapping wire, core silk and filament guiding seat, and described wrapping wire is arranged at the head end of described bending adjustor, and described core silk can run through the catheter lumen of described guiding catheter and the center cavity of described bending section.
Preferably, described wrapping wire is metal spring or plastic material wrapping wire; Described core silk is bending tinsel.
Preferably, described guiding catheter also comprises dilator, described dilator comprises the joint of convergent divergent channel and dilator, in the center cavity that described convergent divergent channel stretches into the catheter lumen of described guiding catheter and described tune curved segment and the head end of described convergent divergent channel can run through the head end of described guiding catheter and be exposed to the outside of the head end of described guiding catheter.
Preferably, the described main part of described guiding catheter is also provided with at least one side opening, and described side opening is connected with described catheter lumen.
A kind of guiding catheter that the application provides comprises head end, tail end and the main part for connecting head end and tail end, guiding catheter has catheter lumen, guiding catheter is for inserting arteria coronaria, guiding catheter also comprises: adjust curved segment, adjust the first end of curved segment to be connected with head end, adjust the second end of curved segment to be connected with the end of main part towards head end; The center cavity of curved segment is adjusted to be connected with the catheter lumen of guiding catheter; Adjust curved assembly, bending adjustment comprises bracing wire and handle, one end of bracing wire is run through main part and is adjusted curved segment and be connected with adjusting the first end of curved segment, and the other end of bracing wire is drawn 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.Setting like this, when performing the operation, according to the physiological structure of patient, pass through operating grip, the length in guiding catheter can be placed in by change bracing wire, lower curved segment in the drive of bracing wire can bend, in the process adjusting curved segment to bend, the head end of guiding catheter can be driven to move, thus the angle of the head end of guiding catheter can be adjusted, the head end of guiding catheter is made to stretch into lesion locations as in arteria coronaria, thus can to lesion locations transfer gantry, the apparatus such as seal wire or sacculus, compared with prior art, the angle of bend adjusting curved segment is changed owing to directly utilizing bracing wire, thus can according to the angle of the head end of the physiological structure adjustment guiding catheter of patient, the head end of guiding catheter is made to stretch into lesion locations, the suitability of guiding catheter can be improved, and owing to not needing to change guiding catheter in operation process, operating difficulty can be reduced, reduce the time required for operation, improve the safety of intervene operation.
Accompanying drawing explanation
In order to be illustrated more clearly in this utility model embodiment 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 more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the guiding catheter in the embodiment one that Fig. 1 provides for the application;
The structural representation of the guiding catheter in the embodiment two that Fig. 2 provides for the application;
In the detailed description of the invention that Fig. 3 provides for the application guiding catheter partial structurtes amplify after schematic diagram;
The structural representation of bending adjustor in the detailed description of the invention that Fig. 4 provides for the application;
The structural representation of dilator in the detailed description of the invention that Fig. 5 provides for the application;
There is in the detailed description of the invention that Fig. 6 provides for the application the structural representation of the guiding catheter of bending adjustor;
There is in the detailed description of the invention that Fig. 7 provides for the application the structural representation of the guiding catheter of dilator;
The vertical section structure schematic diagram of guiding catheter in the embodiment one that Fig. 8 provides for the application;
The vertical section structure schematic diagram of guiding catheter in the embodiment two that Fig. 9 provides for the application;
The cross-sectional structure schematic diagram of guiding catheter in the embodiment one that Figure 10 provides for the application;
The cross-sectional structure schematic diagram of guiding catheter in the embodiment two that Figure 11 provides for the application;
A kind of cross-sectional structure schematic diagram of guiding catheter in the embodiment that Figure 12 provides for the application;
The cross-sectional structure schematic diagram of another kind of guiding catheter in the embodiment that Figure 13 provides for the application;
The integrally-built structural representation of handle in the embodiment one that Figure 14 provides for the application;
The structural representation of the partial structurtes of handle in the embodiment one that Figure 15 provides for the application;
The structural representation of the section of handle in the embodiment one that Figure 16 provides for the application;
The structural representation of handle in the embodiment two that Figure 17 provides for the application;
The structural representation of handle in the embodiment two that Figure 18 provides for the application;
Wherein in Fig. 1 to Figure 18:
The head end 1 of guiding catheter, anchor ring 2, adjust curved segment 3, main part 4, bracing wire 5, strain relief sleeve pipe 6, handle 7, catheter adapter 8, side opening 9, wrapping wire 10, core silk 11, filament guiding seat 12, convergent divergent channel 13, the joint 14 of dilator, Y shape valve 15, outer 16, enhancement 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, embedding lid 27, damped ring 28, handle lower cover 29, locking nut 30, spiral organ of Corti 31, housing 32, steel pipe 33, sleeve 34, guide pad 35, screw rod 36, damping ring 37, anchor tip 38.
Detailed description of the invention
The utility model discloses a kind of guiding catheter, according to the curved shape of the physiological anatomic architecture adjustment guiding catheter of personalization, thus can improve the suitability of guiding catheter.
Below in conjunction with the accompanying drawing in this utility model embodiment, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
Please refer to Fig. 1 to Figure 18, wherein, the dotted line in Fig. 1 and Fig. 2 represents schematic diagram when adjusting curved segment to be in case of bending.
In this embodiment, guiding catheter comprises head end, tail end and the main part 4 for connecting head end and tail end, guiding catheter has catheter lumen, also comprise: adjust curved segment 3, adjust the first end of curved segment 3 to be connected with head end, adjust the second end of curved segment 3 to be 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 assembly, bending adjustment comprises bracing wire 5 and handle 7, one end of bracing wire 5 is run through main part 4 and is adjusted curved segment 3 and be connected with adjusting the first end of curved segment 3, the other end of bracing wire 5 is drawn via the tail end of guiding catheter and is connected with handle 7, and handle 7 can adjust bracing wire 5 and be placed in main part 4 and adjust the length in curved segment 3.
Setting like this, when performing the operation, according to the physiological structure of patient, by operating grip 7, the length in guiding catheter (be mainly main part 4 and adjust curved segment 3) can be placed in by change bracing wire 5, lower curved segment 3 in the drive of bracing wire 5 can bend, in the process adjusting curved segment 3 to bend, the head end 1 of guiding catheter can be driven to move, thus the angle of the head end 1 of guiding catheter can be adjusted, the head end 1 of guiding catheter is made to stretch into lesion locations as in arteria coronaria, thus can to the especially right arteria coronaria transfer gantry of lesion locations, the apparatus such as seal wire or sacculus, compared with prior art, the angle of bend adjusting curved segment 3 is changed owing to directly utilizing bracing wire 5, thus can according to the angle of the head end 1 of the physiological structure adjustment guiding catheter of patient, the head end 1 of guiding catheter is made to stretch into lesion locations, the suitability of guiding catheter can be improved, and owing to not needing to change guiding catheter in operation process, operating difficulty can be reduced, reduce the time required for operation, improve the safety of intervene operation.
It should be noted that, in this embodiment, guiding catheter is tubular structure, length is 400mm ~ 1600mm, and internal diameter is 0.4mm ~ 5.0mm, and external diameter is 1.2mm ~ 7mm, wherein the length of the head end 1 of guiding catheter is 2mm ~ 30mm, and the length adjusting curved segment 3 is 10mm ~ 200mm.Wherein, the head end 1 of guiding catheter is that the head end 1 of flexible plastic head end or guiding catheter comprises flexible plastic head end and plastic flexible pipe section, one end of plastic flexible pipe section is connected with flexible plastic head end, its other end is connected with adjusting the first end of curved segment 3, and wherein plastic flexible pipe section comprises development indicating and enhancement Layer.According to knowhow and concrete service condition, those skilled in the art can learn that flexible plastic and plastic flexible pipe are the concrete values of pliabilitys that are which kind of material is made and plastics clearly.
Also it should be noted that, adjust the center cavity 20 of curved segment 3 identical with size with the structure of the catheter lumen of guiding catheter, and center cavity 20 and catheter lumen align, thus the continuity of cavity can be ensured.In this embodiment, catheter lumen and center cavity 20 are that the cross section of cylindrical cavity and catheter lumen and the cross section of center cavity 20 are circular cross section, smooth surface, facilitate delivery guidewire, the apparatus such as sacculus and support as shown in Figure 10 and Figure 11, certainly, do not get rid of and adopt other shapes yet, if catheter lumen and center cavity 20 are special-shaped cavity, namely the cross section of catheter lumen and the cross section of center cavity are non-circular cross sections, as shown in Figure 12 and Figure 13, center cavity and catheter lumen are not exclusively circular cavity, and (edge line of cavity comprises circular arc line and straight line, circular arc line and straight line are interconnected to form the edge line of cavity).Under equal catheter outer diameter, such structure can make conduit accomplish the large chamber of thin-walled, may be used for carrying multiple support and seal wire etc. simultaneously, certainly, also can adopt the cavity of other shapes according to the service condition of reality.
What needs further illustrated is, in this embodiment, the main part 4 of guiding catheter is straight body portion or main part 4 is shaped bending in definite shape and main part 4 for having the main part of certain angle of bend by preformed, shape and the bending angle etc. of the bending of main part 4 all can set according to the service condition of reality, make main part 4 can adapt to special human anatomic structure, improve the usability of guiding catheter.
What needs further illustrated is; in this embodiment; curved segment 3 is adjusted to be the first end adjusting curved segment for the end be connected with the head end 1 of guiding catheter; the end of adjusting curved segment to be used for being connected with main part 4 is the second end adjusting curved segment; exchange the name of two ends of curved segment just for the ease of being described; certainly, do not get rid of the naming method adopting other yet, exchange the anomia of curved segment two ends as the foundation limiting protection domain.
In addition, by adjusting the length of bracing wire 5, can make to adjust curved segment 3 can be conditioned angle of bend be greater than 0 ° and be not more than 270 °, when bracing wire 5 in the raw time, curved segment 3 is adjusted to be positioned at same level line with the main part 4 of guiding catheter, when straining bracing wire 5, adjusting curved segment 3 to bend thereupon, adjusting the angle between the axis of curved segment 3 and the axis of main part 4 to be the angle of bend adjusting curved segment 3.
In further scheme, the internal layer 18 adjusting curved segment 3 and main part 4 to comprise to be surrounded on center cavity 20 and to arrange, be surrounded on enhancement Layer 17 that internal layer 18 arranges and be surrounded on the skin 16 that enhancement Layer 17 arranges, curved segment 3 and main part 4 is adjusted to be provided with bracing wire chamber 19, bracing wire chamber 19 is arranged between enhancement Layer 17 and internal layer 18, bracing wire chamber 19 is provided with anchor ring 2 towards the end of head end, and bracing wire 5 runs through bracing wire chamber 19 and is fixedly connected with anchor ring 2.Setting like this, is embedded in bracing wire chamber 19 between enhancement Layer 17 and internal layer 18, makes stressed bracing wire 5 can not rack outer 16.
It should be noted that, in this embodiment, outer 16 adopt macromolecule polymer material such as block polyamide, nylon or polyurethane to make; Enhancement Layer 17 is stainless steel silk, tungsten filament, cochrome silk, titanium alloy wire or nitinol alloy wire mesh grid, string diameter is 0.02mm to 0.1mm, density is 30PPI to 100PPI (per inch order number), and woven wire cloth makes conduit have excellent fracture resistance and turn round control performance; Internal layer 18 adopts politef, has the features such as coefficient of friction is little, makes conduit cavity smooth, facilitates other apparatuses or conduit conveying.
Also it should be noted that, anchor ring 2 adopts rustless steel, Nitinol or platinumiridio ring, by mode that is bonding or welding, bracing wire 5 and anchor ring 2 is fixedly connected, and wherein bracing wire 5 can adopt circular or flat-shaped stainless steel silk or nitinol alloy wire.
What needs further illustrated is, in this embodiment, when the head end 1 of guiding catheter comprises flexible plastic head end and has the plastic flexible pipe section of development indicating and enhancement Layer, anchor ring 2 is integral type structure with the enhancement Layer of plastic flexible pipe section, enhancement Layer as plastic flexible pipe section is a metal tube, its front end is formed the end being similar to spring by cut, the clearing end of spring then uses as anchor ring.Certainly, do not get rid of the set-up mode adopting other yet, as when carrying out moulding or production to enhancement Layer, directly anchor ring and enhancement Layer are injected into one, make anchor ring and enhancement Layer form the structure of integral type.
Need to illustrate further, in this embodiment, bracing wire chamber 19 is not limited to flat chamber, can be circular cavity or oval chamber, and equally, bracing wire 5 can be the tinsel of flat filament, circle silk or ellipse.
What also need to illustrate further is, in this embodiment, be arranged at and adjust the bracing wire chamber of curved segment 3 to be connected with the bracing wire chamber being arranged at main part 4, the shape, size etc. in two bracing wire chambeies are all identical, the centrage in two bracing wire chambeies coincides, namely bracing wire chamber 19 is arranged along tune curved segment 3 and main part 4, and the bearing of trend in bracing wire chamber 19 is consistent with adjusting the bearing of trend of curved segment 3 and main part 4.
In further scheme, for the ease of observing, at the tune enhancement Layer 17 of curved segment 3 or the head end 1 of guiding catheter, development indicating is set, the material of indicating of wherein developing adopts the macromolecular material of the platinumiridio of ring-type, platinum, gold, tantalum, tungsten, tungstenic or the macromolecular material containing Bi2O3, so can be convenient to observe the position of guiding catheter and adjust the angle of curved segment 3 in operation process.
In addition, in order to ensure to adjust curved segment 3 can bend under the drive of bracing wire 5, in this embodiment, curved segment 3 is adjusted to be that soft curved segment of adjusting (namely adjusts curved segment 3 to be easy to along active force generation deformation in the drive of bracing wire 5, when after the active force disappearance that bracing wire 5 applies, state when adjusting curved segment 3 can return to not stressed) or adjust the hardness of curved segment 3 to increase progressively step by step along adjusting first end to the second end of curved segment.So can ensure to adjust curved segment can bend under the effect of bracing wire 5, and can ensure to adjust the pliability of curved segment 3 to be greater than the main part 4 of guiding catheter, thus ensure that the main part 4 of guiding catheter has good support force, thus be convenient to the apparatuses such as transport support.
In further scheme, the main part 4 of guiding catheter is also provided with at least one side opening 9, and side opening 9 is connected with catheter lumen.So, side opening 9 can connecting tube chamber and human vas, blood can be circulated from side opening 9, prevent guiding catheter from blood vessel is blocked completely, thus reduce operation risk further.In this embodiment, main part 4 preferably has the main part of side opening 9, certainly, does not also get rid of the main part selecting not offer side opening according to the service condition of reality.
In addition, adjust curved segment 3 and main part 4 to be provided with at least one bracing wire chamber 19, be described to arrange a bracing wire chamber 19 and to arrange two bracing wire chambeies 19 other structures to guiding catheter below.
Embodiment one
The enhancement Layer 17 of curved segment 3 and the enhancement Layer 17 of main part 4 is adjusted to be provided with two bracing wire chambeies 19, as shown in Figure 10, two bracing wire chamber 19 axial symmetry distributions.Handle comprises that handle is pullover 21, handle driver plate 22, two anchorage shoes 23, dampened disk 24, handle upper cover 26, embedding lid 27, damped ring 28 and handle lower covers 29, wherein: handle driver plate 22 is set on the boss of handle upper cover 26, handle driver plate 22 has two regulating parts and handle driver plate 22 all can be made along the central rotation of boss by stirring arbitrary regulating part; The excircle of handle driver plate 22 offers cannelure, and damped ring 28 embeds cannelure; Dampened disk 24 and handle driver plate 22 abut against and dampened disk 24 fits with the boss of handle upper cover 26, securing member run through dampened disk 24, handle upper cover 26 boss and be fixedly connected with embedding lid 27.
Two anchorage shoes 23 are all arranged at handle driver plate 22, the bracing wire 5 being positioned at two bracing wire chambeies 19 is connected with the anchorage shoe 23 corresponded respectively, bracing wire 5 is by the groove connecting stay wire fixture 23 of handle driver plate 22 outer rim, rotating regulating part makes handle driver plate 22 rotation can drive corresponding bracing wire 5 tensioning and loosen, regulating part can joystick driver plate 22 the anglec of rotation thus the degree of crook of bending section 3 can be controlled, realize distal end of catheter and bend controlled.
In order to reduce the damage of the tail end to guiding catheter, in this embodiment, the tail end of guiding catheter is connected with strain relief sleeve pipe 6; Also comprise the catheter adapter 8 being exposed to handle end, in the draw-in groove that catheter adapter 8 and strain relief sleeve pipe 6 embed between handle upper cover 26 and described handle lower cover 29 and strain relief sleeve pipe 6 runs through the groove at the boss center being positioned at handle upper cover 26, guarantee that bending can not occur strain relief sleeve pipe 6 and strain relief sleeve pipe 6 can not interfere other structures of handle.
In the present embodiment, in order to ensure the steadiness connected, the round boss of handle upper cover 26 is provided with two installing holes, embedding lid 27 is embedded with the nut corresponding one by one with installing hole, what securing member was concrete is bolt 25, bolt 25 runs through dampened disk 24 and installing hole and is fastened and connected with nut, so can effectively prevent dampened disk 24 and embedding lid 27 from rotating.Simultaneously, by arranging damped ring 28, the damping between handle driver plate 22 and dampened disk 24 can be increased, by screwing bolts 25, dampened disk 24 and the clamping of damped ring 28 phase can be made, and then be fastened and connected between the boss that can ensure handle driver plate 22 and handle upper cover 26.And, by the degree of tightness of adjusting bolt 25, compression damping circle 28, can the friction of regulating handle driver plate 22 and the round boss on upper cover 26 and dampened disk 24, prevent guiding catheter bending section in bending process, guiding-tube bend section causes bracing wire 5 to slide because of stressed with the resilience of self.
In addition, in order to improve the suitability of guiding catheter further, in this specific embodiment, guiding catheter also comprises bending adjustor, and bending adjustor comprises wrapping wire 10, core silk 11 and filament guiding seat 12, and wrapping wire 10 is arranged at the head end of bending adjustor.For the ease of installing bending adjustor, need to install Y shape valve 15 in catheter adapter 8, Y shape valve 15 is connected with catheter adapter 8, and core silk 11 can run through Y shape valve 15, catheter adapter 8, the catheter lumen of guiding catheter and the center cavity 20 of bending section.Wrapping wire 10 is soft metal spring or the soft head of plastics, can avoid making internal layer 18 scratch when interspersed bending adjustor enters cavity.Core silk 11, for having the bending tinsel of support force to a certain degree, can coordinate handle to make to adjust curved segment 3 to bend certain angle, make the head end 1 of guiding catheter in certain special bending to adapt to human anatomic structure.Filament guiding seat 12 has instruction bending and locking function, the bending of bending adjustor can be made consistent with adjusting the bending direction of curved segment 3, and lock with the Y shape valve 15 coordinated, prevent core silk 11 from sliding.
When bending adjustor is the tune curved segment 3 of linearity under inserting naturalness via Y shape valve 15, catheter lumen and center cavity 20, make the flexural deformation of adjusting curved segment 3 to occur to a certain degree, the bending direction of bending adjustor should be in same plane (namely the angle of bend of bending adjustor is identical with the angle of bend of tune curved segment 3) with adjusting the bending direction of curved segment 3.Filament guiding seat 12 can be locked with the joint of Y shape valve 15, skids off in order to prevent bending adjustor.Wrapping wire 10 is 0mm ~ 10.0mm with the distance of anchor ring 2, and the head end 1 of guiding catheter is in nature linear state.As shown in Figure 8, work as operating grip, corresponding tension or when loosening bracing wire 5, coordinates bending adjustor to use, can make tune curved segment 3 that deformation occurs, conduit can be made to be that certain special bending adapts to certain special human anatomic structure, be convenient to guiding catheter and insert arteria coronaria, really can reach doctor and can regulate and control position pointed by guiding catheter far-end, different diseased regions can be entered with same guiding catheter, thus shortening operating time, alleviate patient suffering.
Except bending adjustor, guiding catheter can also be used in combination with dilator.Dilator mainly coordinates main part 4 to be that the guiding catheter in straight body portion uses.The effect of dilator is the effect of dilator is coordinate adjustable bending guiding catheter directly to insert human vas, realizes inserting without sheath, minimizing wound size and the damage to blood vessel.
Dilator comprises the joint 14 of dilator and has the convergent divergent channel 13 of taper head end.Wherein convergent divergent channel 13 adopts macromolecule polymer material such as block polyamide, polyethylene, nylon or the polyurethane with certain degree of hardness to make.The length of dilator is 400mm ~ 1600mm, and diameter is 1.3mm ~ 2.0mm.Wherein convergent divergent channel 13 is single lumen catheter, the head end of convergent divergent channel 13 is the head end of taper head end and convergent divergent channel 13 is simultaneously coniform, the tapering of taper head end sets according to the service condition of reality, employing taper head end like this is conducive to coordinating guiding catheter through diseased region, reduces insertion process resistance and wound; The joint 14 of dilator has locking function, can ensure that filament guiding seat 12 is locked, in order to prevent from adjusting curved assembly to skid off with the joint of Y shape valve 15.
The distance that conduit head end 1 is stretched out at the tip of dilator is 1mm ~ 50.0mm, and the pipe shaft interference fit of convergent divergent channel 13 and the head end 1 of guiding catheter, make guiding catheter coordinate tight gapless with dilator, insertion process is more smooth and easy.
It should be noted that, in this embodiment, for the ease of installing, need to arrange Y shape valve, Y shape valve 15 is connected with catheter adapter 8, bending adjustor and dilator all stretch in guiding catheter by Y shape valve 15, certainly, also do not get rid of and adopt other connection valve as female Luer or directly bending adjustor and dilator stretched in guiding catheter.
Also it should be noted that, in this embodiment, wrapping wire 10 is 0mm to 10.0mm with the distance of anchor ring 2, certainly, does not also get rid of the set-up mode adopting other.
Embodiment two
In the present embodiment, adjust curved segment 3 and main part 4 to be provided with a bracing wire chamber 19, as shown in figure 11, handle comprises housing 32, spiral organ of Corti 31 and is all arranged at the guide pad 35 of housing 32 inside, screw rod 36 and steel pipe 33, wherein:
The end of thread of screw rod 36 is connected by threaded engagement with spiral organ of Corti 31, stiff end and the guide pad 35 of screw rod 36 are fixedly connected, particularly, screw rod 36 is the moving member of handle, its end of thread is with external screw thread, can match with the female thread on spiral organ of Corti 31, the thread pitch that both coordinate is comparatively large, can produce relative movement fast.The rear end of screw rod 36 is flat structure, is embedded in guide pad 35, can effectively prevent screw rod 36 from rotating; Bracing wire 5 is run through steel pipe 33 and is fixedly connected by the grooving of steel pipe 33 and the rear end of screw rod 36; Front end and the anchor tip 38 of steel pipe 33 are fixedly connected, and rear end and the guide pad 35 of steel pipe 33 are fixedly connected, and steel pipe 33 runs through screw rod 36; In order to avoid the tail end of guiding catheter damages, the tail end of guiding catheter is connected with strain relief sleeve pipe 6, strain relief sleeve pipe 6 is sheathed on the end that in steel pipe 33 and two ends of strain relief sleeve pipe 6 are all exposed to handle, the tail end of end and guiding catheter that strain relief sleeve pipe 6 is exposed to spiral organ of Corti 31 is connected, and the other end of strain relief sleeve pipe 6 is then connected with strain relief sleeve pipe 6 as catheter adapter 8 or catheter adapter 8; Guide pad 35, by the screw on housing 32, is screwed guide pad 35 and housing 32, thus forms the support combinations of housing 32, steel pipe 33, guide pad 35, anchor tip 38.
Turn spiral organ of Corti 31, by the counteracting force of screw thread, screw rod 36 axially moves along steel pipe 33 and guide pad 35, guide pad 35 in handle is except playing the guiding role, the stroke of screw rod 36 can also be controlled, when screw rod 36 moves to its range, can abut against with guide pad 35, thus guide pad 35 also plays spacing effect.Sleeve 34, by fixing with catheter adapter 9, can facilitate housing 32 to connect spiral organ of Corti 31 from handle rear end.
Wherein, the shape of spiral organ of Corti 31 is cylindric, and excircle is formed the projection of outside a week by machining or injection mo(u)lding, there is anti-skidding process on surface simultaneously, rotates when facilitating doctor to operate.Anchor tip 38 is embedded in the front end of spiral organ of Corti 31, makes spiral organ of Corti 31 that the relative movement in radial and axial direction can not occur together with housing 32, can only do the relative rotation of axial direction along handle center.The excircle of anchor tip 38 having a cannelure, for embedding damping ring 37, increasing the damping between spiral organ of Corti 31 and anchor tip 38 and support force, prevent in the process that guiding catheter is bending, the contingent revolution of spiral organ of Corti 31.By rotational lock nut 30, the front end of anchor tip 38 can be made to be out of shape, to regulate the size of its inner chamber, thus realize the fixing of guiding catheter and anchor tip 38, reach the object that conduit itself is fixed with handle.
By the spiral organ of Corti 31 on rotary handle, screw rod 36 moves to handle rear end, and bracing wire 5 fixed thereon is moved, and changes the length being positioned at and adjusting curved segment 3 and main part 4, thus reaches the object controlling to adjust curved segment 3 to be out of shape.The anglec of rotation controlling to dial spiral organ of Corti 31 accurately can control the degree of crook adjusting curved segment 3, realizes distal end of catheter and bends controlled.Screw thread between spiral organ of Corti 31 and screw rod 36 has auto-lock function, and when can guarantee distal end of catheter distortion or stressing conditions flip-flop, bending can not change.
It should be noted that, in embodiment one, bending adjustor and dilator are all be used in combination with the guiding catheter with two bracing wire chambeies 19, certainly, also the guiding catheter do not got rid of bending adjustor or dilator and have a bracing wire chamber is used in combination, concrete set-up mode is similar with description above, does not repeat them here.
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 this utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model 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 (15)
1. a guiding catheter, comprise head end, tail end and the main part for connecting described head end and described tail end, described guiding catheter has catheter lumen, it is characterized in that, described guiding catheter can be used in inserting arteria coronaria, and described guiding catheter also comprises:
Adjust curved segment, the first end of described tune curved segment is connected with described head end, and the second end of described tune curved segment is connected with the end of described main part towards the head end of described guiding catheter; The center cavity of described tune curved segment is connected with described catheter lumen;
Adjust curved assembly, comprise handle, one end of described bracing wire is run through described main part with described tune curved segment and is connected with the first end of described tune curved segment, the other end of described bracing wire is drawn via the tail end of described guiding catheter and is connected with described handle, and described handle can adjust described bracing wire and be placed in length in described main part and described tune curved segment.
2. guiding catheter as claimed in claim 1, it is characterized in that, described main part and described tune curved segment include be surrounded on described center cavity arrange internal layer, be surrounded on described internal layer arrange enhancement Layer and be surrounded on described enhancement Layer arrange skin, described tune curved segment and described main part are also provided with bracing wire chamber, described bracing wire chamber is arranged between described enhancement Layer and described internal layer, described bracing wire chamber is provided with anchor ring towards the end of described head end, and described bracing wire runs through described bracing wire chamber and is fixedly connected with described anchor ring.
3. guiding catheter as claimed in claim 2, it is characterized in that, described tune curved segment and described main part include bracing wire chamber described at least one, each described bracing wire chamber is provided with described anchor ring, each described anchor ring all has corresponding described bracing wire to be fixedly connected with it, and described adjustment handle is placed in the length of described bracing wire intracavity for adjusting bracing wire described in every bar.
4. guiding catheter as claimed in claim 3, it is characterized in that, the cross section that the cross section of described catheter lumen and the cross section of described center cavity are circular cross section or described catheter lumen cross section and described center cavity is non-circular cross sections.
5. guiding catheter as claimed in claim 1, it is characterized in that, described main part is straight body portion or described main part is bending main part.
6. guiding catheter as claimed in claim 2, it is characterized in that, the head end of described guiding catheter is that the head end of flexible plastic head end or described guiding catheter comprises plastics head end and is connected with described flexible plastic head end with one end, the plastic flexible pipe section that the other end is connected with the first end of described tune curved segment, described plastic flexible pipe section comprises development indicating and enhancement Layer.
7. guiding catheter as claimed in claim 6, it is characterized in that, the enhancement Layer of described anchor ring and described plastic flexible pipe section is that integral type is arranged.
8. the guiding catheter as described in any one of claim 1 to 7, is characterized in that, described tune curved segment can be conditioned angle of bend and is greater than 0 ° and is not more than 270 °.
9. guiding catheter as claimed in claim 8, is characterized in that, described tune curved segment is that the soft hardness of curved segment or described tune curved segment of adjusting increases progressively step by step along the first end of described tune curved segment to the second end of described tune curved segment.
10. guiding catheter as claimed in claim 3, it is characterized in that, be provided with a described bracing wire chamber between described enhancement Layer and described internal layer, described handle comprises housing, spiral organ of Corti and is all arranged at the guide pad of described enclosure interior, screw rod and steel pipe, wherein:
The end of thread of described screw rod is connected by threaded engagement with described spiral organ of Corti, and stiff end and the described guide pad of described screw rod are fixedly connected;
Described bracing wire is run through described steel pipe and is fixedly connected by the grooving of described steel pipe and the described stiff end of described screw rod;
Front end and the described anchor tip of described steel pipe are fixedly connected, and rear end and the described guide pad of described steel pipe are fixedly connected, and described steel pipe runs through described screw rod;
Described guide pad and described housing are fixedly connected.
11. guiding catheters as claimed in claim 3, it is characterized in that, two described bracing wire chambeies are provided with between described enhancement Layer and described internal layer, described handle comprises that handle is pullover, handle driver plate, two anchorage shoes, dampened disk, handle upper cover, embedding lid, damped ring and handle lower covers, wherein:
Described handle driver plate is set on the boss of described handle upper cover, and described handle driver plate can along the central rotation of described boss; The excircle of described handle driver plate offers cannelure, and described damped ring embeds described cannelure, and described handle driver plate has two for stirring the regulating part that described handle driver plate rotates;
Described dampened disk and described handle driver plate abut against and the boss of described dampened disk and described handle upper cover fits, and securing member run through described dampened disk, handle upper cover boss and be fixedly connected with described embedding lid;
Two described anchorage shoes are all arranged at described handle driver plate, and the described bracing wire being positioned at two described bracing wire chambeies is connected with the described anchorage shoe corresponded respectively;
The tail end of described guiding catheter is connected with strain relief sleeve pipe; Also comprise the catheter adapter being exposed to described handle end, described catheter adapter and described strain relief sleeve pipe embed in the draw-in groove between described handle upper cover and described handle lower cover.
12. guiding catheters as claimed in claim 8, it is characterized in that, described guiding catheter also comprises bending adjustor, described bending adjustor comprises wrapping wire, core silk and filament guiding seat, described wrapping wire is arranged at the head end of described bending adjustor, and described core silk can run through the catheter lumen of described guiding catheter and the center cavity of described bending section.
13. guiding catheters as claimed in claim 12, is characterized in that, described wrapping wire is metal spring or plastic material wrapping wire; Described core silk is bending tinsel.
14. guiding catheters as claimed in claim 8, it is characterized in that, described guiding catheter also comprises dilator, described dilator comprises the joint of convergent divergent channel and dilator, in the center cavity that described convergent divergent channel stretches into the catheter lumen of described guiding catheter and described tune curved segment and the head end of described convergent divergent channel can run through the described head end of described guiding catheter and be exposed to the outside of the head end of described guiding catheter.
15. guiding catheters as claimed in claim 1, it is characterized in that, the described main part of described guiding catheter is also provided with at least one side opening, and described side opening is connected with described catheter lumen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563967.0U CN204864477U (en) | 2015-07-30 | 2015-07-30 | Guide pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520563967.0U CN204864477U (en) | 2015-07-30 | 2015-07-30 | Guide pipe |
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| Publication Number | Publication Date |
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| CN204864477U true CN204864477U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520563967.0U Expired - Fee Related CN204864477U (en) | 2015-07-30 | 2015-07-30 | Guide pipe |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958824A (en) * | 2015-07-30 | 2015-10-07 | 湖南埃普特医疗器械有限公司 | Guiding catheter |
| CN105617509A (en) * | 2016-03-29 | 2016-06-01 | 中国人民解放军第二军医大学 | Adjustable single bent conduit |
| CN106730240A (en) * | 2016-11-16 | 2017-05-31 | 王占华 | Bionic urethral catheterization pipe and its application method |
| CN107115589A (en) * | 2016-02-23 | 2017-09-01 | 上海微创医疗器械（集团）有限公司 | Catheter and the interventional medical device comprising the catheter |
| CN114177477A (en) * | 2021-11-26 | 2022-03-15 | 上海以心医疗器械有限公司 | Bend adjusting device, bend adjusting sheath tube and medical system |
| CN114404779A (en) * | 2021-12-29 | 2022-04-29 | 中国医学科学院阜外医院 | Ventricular catheter for cardiovascular interventional pump with adjustable angle |
| CN115025365A (en) * | 2022-06-13 | 2022-09-09 | 上海普实医疗器械股份有限公司 | Adjustable bent catheter |
-
2015
- 2015-07-30 CN CN201520563967.0U patent/CN204864477U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104958824A (en) * | 2015-07-30 | 2015-10-07 | 湖南埃普特医疗器械有限公司 | Guiding catheter |
| CN107115589A (en) * | 2016-02-23 | 2017-09-01 | 上海微创医疗器械（集团）有限公司 | Catheter and the interventional medical device comprising the catheter |
| CN105617509A (en) * | 2016-03-29 | 2016-06-01 | 中国人民解放军第二军医大学 | Adjustable single bent conduit |
| CN106730240A (en) * | 2016-11-16 | 2017-05-31 | 王占华 | Bionic urethral catheterization pipe and its application method |
| CN114177477A (en) * | 2021-11-26 | 2022-03-15 | 上海以心医疗器械有限公司 | Bend adjusting device, bend adjusting sheath tube and medical system |
| CN114177477B (en) * | 2021-11-26 | 2024-02-13 | 上海以心医疗器械有限公司 | Bending adjusting device, bending adjusting sheath tube and medical system |
| CN114404779A (en) * | 2021-12-29 | 2022-04-29 | 中国医学科学院阜外医院 | Ventricular catheter for cardiovascular interventional pump with adjustable angle |
| CN114404779B (en) * | 2021-12-29 | 2023-07-07 | 中国医学科学院阜外医院 | Angle-adjustable heart chamber catheter for cardiovascular intervention pump |
| CN115025365A (en) * | 2022-06-13 | 2022-09-09 | 上海普实医疗器械股份有限公司 | Adjustable bent catheter |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20170730 |