CN202366306U - Balloon guiding catheter - Google Patents
Balloon guiding catheter Download PDFInfo
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- CN202366306U CN202366306U CN2011205045528U CN201120504552U CN202366306U CN 202366306 U CN202366306 U CN 202366306U CN 2011205045528 U CN2011205045528 U CN 2011205045528U CN 201120504552 U CN201120504552 U CN 201120504552U CN 202366306 U CN202366306 U CN 202366306U
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- sacculus
- guiding catheter
- outer tube
- catheter
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Abstract
The utility model discloses a balloon guiding catheter which aims to reduce the contraction time of a balloon in an interventional therapy process and improve the flexibility and the bending property of a catheter so as to ensure that the balloon can enter a bent vessel. The balloon guiding catheter is provided with a composite catheter consisting of an outer catheter and an inner catheter which are coaxial, wherein a guiding cavity of the balloon guiding catheter is formed in the inner catheter; the balloon which can be aerated and contracted is connected to the end part of a far end of the outer catheter; and an expanding catheter is arranged in the balloon guiding catheter. Compared with the prior art, the structure of the inner catheter and the outer catheter is adopted, so that the balloon guiding catheter has flexibility and bending property and can be easily sent into a bent vessel; and the balloon guiding catheter provided with the balloon can be used as a guiding catheter for guiding other interventional devices into focus positions, and meanwhile, the far end of the vessel is temporarily closed to block up blood flow and reduce the contraction time of the balloon, so that the catheter can be smoothly taken out of the body.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, the conduit of particularly a kind of intervention diagnosis and treatment.
Background technology
Intervention diagnosis and the therapeutic modality of treatment in the blood vessel as a Wicresoft; Introducing improvement along with the progress of iconography equipment, novel intervention equipment in recent years is able to develop fast; Blood vessel is got involved the doctor can handle the pathological changes that becomes increasingly complex; The case of clinical practice is more and more, and the disease kind that relates to also more and more widely.Intervention diagnosis and therapeutic modality are fast-developing now, and the present single interventional therapy of coronary heart disease case load of the U.S. just reaches 500,000 examples.Yet the insoluble problem of one of them that faces at present is, operation conduit or produce the chip embolus when carrying sacculus, support or the stopper of interventional therapy and flow to the blood vessel far-end and cause distal vessels inaccessible in blood vessel.The myocardial necrosis incidence rate that causes like percutaneous coronary intervention (pci) PCI is traced it to its cause up to 16%～39%, and then mostly is due to the blood vessel intraclast and speckle blocking remote blood vessel that produces in the interventional procedure.Therefore, in intervention diagnosis and the therapeutic process, protection blood vessel far-end is the big important topic of one in the present interventional medicine.
In interventional therapy such as thrombectomby process, through the expansion of sacculus, make sacculus be attached at blood vessel wall, interim blocking blood flow is with protection blood vessel far-end.Simultaneously,, return and remove conduit through the contraction of sacculus, logical again to recover blood flow.The key issue of this Therapeutic Method is how to guarantee that the contraction time of sacculus is unlikely oversize, so that can in time conduit be withdrawn from, can guarantee that again conduit has certain compliance, so that can enter into crooked blood vessel smoothly.External now existing products has the Concentric Medical of the U.S.; INC. the guiding catheter Balloon Guide Catheter of the guiding catheter of the Merci board dribbling capsule produced of company, Cello board dribbling capsule that U.S. EV3 Company produces, but because the outer tube of Merci is the polymer of monolayer, its ability of bearing negative pressure is undesirable; Cause the contraction time of sacculus long; Even when sacculus shrinks, outer tube occurs and subside, cause conduit to return and remove, and the outer tube of Cello adopts steel wire to strengthen; This reinforcement structure can improve the ability that conduit bears negative pressure; But because the steel wire of cross-like can improve the hardness of conduit itself significantly, therefore also can reduce the compliance of conduit significantly, make conduit be difficult to enter into crooked blood vessel.
Summary of the invention
The purpose of this utility model provides a kind of sacculus guiding catheter, and the technical problem that solve is in the interventional therapy process, reduces the contraction time of sacculus, improves the compliance and the bending property of conduit simultaneously, so that can get into crooked blood vessel.
This utility model adopts following technical scheme: a kind of sacculus guiding catheter; Said sacculus guiding catheter is provided with the multiple tube of outer tube and the coaxial formation of interior pipe; Constitute the lead-in cavity of sacculus guiding catheter in the interior pipe; Be connected with the sacculus that can fill and shrink at the outer tube distal end, be provided with convergent divergent channel in the sacculus guiding catheter, the lead-in cavity of convergent divergent channel and sacculus guiding catheter forms sliding-contact.
The proximal end of the sacculus guiding catheter of this utility model is provided with breeches joint; The main endoporus of breeches joint is communicated with the formation first passage with the inner chamber of interior pipe; The axis of the side opening of breeches joint and the axes intersect of main endoporus are acute angle at proximal direction, and side opening is communicated with gap between outer wall of inner tube and the outer tube wall and constitutes second channel.
The internal diameter of the outer tube of this utility model is 1.80～2.70mm, and external diameter is 2.10～2.90mm, and length is 52～100cm, is sunk area at the distal end outer wall of outer tube, and the tube wall of sunk area has through hole.
The sacculus of this utility model is sticked to sunk area.
The through-hole diameter of this utility model is 0.4～0.8mm, and the centre-to-centre spacing of adjacent two through hole is 3～5mm.
The outer tube of the utility model adopts nylon elastomer, nylon or polyurethane, and embedding on the outer tube wall has helical spring, and helical spring adopts stainless steel, Nitinol or cochrome silk, and pitch is 0.015～0.024mm.
The internal diameter of the interior pipe of this utility model is 1.40～2.18mm; External diameter is 1.70～2.50mm; Length is 65～118cm, and interior pipe adopts three-decker, and the internal layer of interior pipe adopts politef; The intermediate layer is that diameter is stainless steel silk or the titanium-nickel wire mesh grid of 0.025～0.1mm, outer nylon elastomer, nylon or the polyurethane of adopting.
The cladding material of this utility model reduces from the classification of near-end to far-end hardness.
The far-end of the interior pipe of this utility model is equipped with a ring-type development labelling, and the development labelling is embedded among the cladding material, and its material is tungsten filament or platinumiridio.
The distal end of the convergent divergent channel of this utility model is taper, and tapered distal end all exposes the distal end of sacculus guiding catheter.
This utility model compared with prior art adopts the structure of interior pipe and outer tube, makes the sacculus guiding catheter have compliance and bending property; Can get into crooked blood vessel easily, be provided with sacculus sacculus guiding catheter, in interventional therapy; Both can be used as guiding catheter other intervention apparatus had been imported lesions position, through the sacculus of expansion, that the blood vessel far-end is inaccessible temporarily simultaneously; Blocking blood flow, the outer tube of sacculus guiding catheter adopt spring to strengthen structure, improved the ability that conduit bears negative pressure; Reduce the time that sacculus shrinks, can in time conduit be withdrawn from the body smoothly.
Description of drawings
Fig. 1 is the sacculus guiding catheter structure chart of this utility model embodiment.
Fig. 2 is the convergent divergent channel structure chart of this utility model embodiment.
Fig. 3 is the profilograph of the sacculus guiding catheter of this utility model embodiment.
Fig. 4 is the A-A profile of Fig. 3.
Fig. 5 is the balloon structure figure of this utility model embodiment.
Fig. 6 is a sketch map behind the balloon expandable of this utility model embodiment.
Fig. 7 is the outer tube structure figure of this utility model embodiment.
Fig. 8 is the B-B cutaway view of Fig. 7.
Fig. 9 is the inner tube structure figure of this utility model embodiment.
Figure 10 is the C-C cutaway view of Fig. 9.
Figure 11 is outer tube and the interior pipe far-end Welding Structure figure of this utility model embodiment.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment this utility model is done further explain.In Fig. 1 to Figure 11, each sequence number is expressed as: 1-sacculus guiding catheter, 2-outer tube, 3-sacculus, 4-convergent divergent channel, the tip of 5-convergent divergent channel; 6-Y type joint, the main endoporus of 7-Y type joint, the side opening of 8-Y type joint, 9-solidifies glue, pipe in the 10-; Tube cavity in the 11-strain relief sleeve pipe, 12-, the 13-through hole, the 14-distal outer tube is terminal, the 15-head end; Gap in the 16-between pipe and the outer tube, the sunk area of 17-outer tube, the shoulder regions of 18-sacculus, the gap between 19-sacculus two ends inwall and the outer tube outer wall, 20-spring; The outer inner tube layer of 21-, pipe mesh grid in the outer tube layer in the 22-, 23-, inner tube layer in the 24-, 25-development labelling.
As shown in Figure 1; The sacculus guiding catheter 1 of this utility model is provided with the multiple tube of outer tube 2 and interior pipe 10 coaxial formations, constitutes the lead-in cavity of sacculus guiding catheters 1 in the interior pipe 10; Be connected with the sacculus 3 that can fill and shrink at outer tube 2 distal ends, sacculus 3 is soft and have flexible.
As shown in Figure 2, in the sacculus guiding catheter 1 convergent divergent channel 4 can be set, convergent divergent channel 4 has slick outer surface, and with the lead-in cavity formation sliding-contact of sacculus guiding catheter 1, convergent divergent channel 4 can be free to slide in outer tube 2 lead-in cavity.Far-end 5 ends of convergent divergent channel 4 are taper, and when convergent divergent channel 4 penetrated and be arranged in the lead-in cavity of sacculus guiding catheter 1, its tapered distal end 5 all exposed the distal end of sacculus guiding catheter 1.Convergent divergent channel 4 is used for sacculus guiding catheter 1 is transported to the vessel position of required arrival.
Like Fig. 3 and shown in Figure 4, sacculus guiding catheter 1 is by outer tube 2 and interior pipe 10 coaxial settings.The proximal end of sacculus guiding catheter 1 is provided with breeches joint 6; Breeches joint 6 is communicated with formation first passage (lead-in cavity) along the main endoporus 7 of axis with the inner chamber 12 of interior pipe 10; The near-end of interior pipe 10 puts in the main endoporus 7 of breeches joint 6; Interior pipe 10 close ends and breeches joint 6 contact positions are carried out sealing and fixing with solidifying glue 9 with both, and first passage is used to guide other intervention apparatus such as thrombectomy device, arrives specified vessel position.Breeches joint 6 is provided with side opening 8; The axes intersect of its axis and main endoporus 7 is acute angle at proximal direction; Side opening 8 is communicated with gap 16 between interior pipe 10 outer walls and outer tube 2 inwalls and constitutes second channel; Outer tube 2 near-ends put in breeches joint 6 far-ends, and its contact position is carried out sealing and fixing with solidifying glue 9 with both, and second channel is used for injecting fluid such as contrast agent.
Near the outside dimension of one section outer wall of outer tube 2 distal ends outside dimension less than center and near-end; Form sunk area 17; The sunk area 17 outer sacculus 3 that are provided with; With solidifying glue the two ends of sacculus 3 are sticked to this section of far-end zone of outer tube 2, the outside dimension that outside dimension and outer tube 2 middle parts and near-end behind the sacculus 3 be set just as.Have two pairs of through holes 13 on the wall of outer tube 2 far-end sunk areas 17, make the spatial communication of gap 16 and sacculus 3.Manage the outer wall of 10 distal ends in the mouth of pipe of the distal end 14 of outer tube 2 inwardly is contracted to and is close to, be provided with the head end 15 of annular in the end, the distal end of outer tube 2, interior pipe 10 distal ends and head end 15 are welded together, formed hermetically-sealed construction.When connecting a syringe at side opening 8, and when its injecting fluid, just can sacculus 3 be expanded, what of the injection scale of construction can directly have influence on the full size of sacculus 3, and the syringe pumpback can be retracted to full preceding state with sacculus 3.
At the far-end of breeches joint 6, breeches joint 6 is equipped with a strain relief sleeve pipe 11 with outer tube 2 junctions, in order to improve the ability of sacculus guiding catheter 1 torque resistant, prevents that sacculus guiding catheter 1 from being fractureed.
As shown in Figure 5, sacculus 3 adopts hyperelastic macromolecule polymer material (trade mark is 2363-80AE), and its internal diameter is not 1.5～2.5mm when full, and wall thickness is 0.08～0.18mm, and maximum full external diameter can reach 15mm.At the sunk area 17 bonding sacculus 3 of outer tube 2 far-ends, can reduce sacculus 3 outside dimension after bonding like this.Be respectively equipped with two bonding regions at the two ends of sacculus 3, one is the gap 19 between the two ends of sacculus 3 inwall and sunk area 17 outer walls, another be positioned at outside the gap 19, the shoulder regions 18 of sacculus 3 ends.Before sacculus 3 is bonding, can carries out surface etch or increase its surface roughness, to improve the adhesive strength of sacculus 3 bonding plane.
As shown in Figure 6, when the two pair through holes 13 of liquid on outer tube sunk area 17 walls of injection, when entering into sacculus 3, can expand sacculus 3.Before liquid flows back to, and sacculus 3 is retracted to again and expands.
Like Fig. 7 and shown in Figure 8, the internal diameter of outer tube 2 is 1.80～2.70mm, and external diameter is 2.10～2.90mm, and length is 52～100cm.It near the distal end of outer tube 2 described sunk area 17; Assembly area for sacculus 3; Tube wall at the sunk area 17 of outer tube 2 has two pairs of identical symmetric through holes 13 of size, and through-hole diameter is 0.4～0.8mm, and the centre-to-centre spacing of adjacent two through hole is 3～5mm.When flow of liquid via through holes 13 flows to sacculus 3, can fill sacculus 3.
Embedding on outer tube 2 inwalls has helical spring 20, utilizes the fusion performance of plastics that the inwall 21 of helical spring 20 with outer tube fused together, and helical spring 20 is embedded among the inwall 21.Helical spring 20 adopts medical stainless steel, Nitinol or cochrome filament winding system, and pitch is 0.015～0.024mm.Outer tube 2 is a high molecular polymer, adopts nylon elastomer, nylon or the polyurethane PU of U.S. A Kema pebax.Helical spring 20 outer tube 2 play a part radial support, can improve sacculus guiding catheter 1 and bear the negative pressure ability, be i.e. the ability of outer tube 2 opposing pipe shaft radial contraction during syringe pumpback; Thereby reduce the contraction time of sacculus 3; Simultaneously, guaranteeing that outer tube 2 has under the prerequisite of the ability of enough bearing pressure, can also reduce the hardness of outer tube 2 inwalls 21 materials; Sacculus guiding catheter 1 improves the compliance of sacculus guiding catheter 1, so that can get into crooked blood vessel.
Like Fig. 9 and shown in Figure 10, the internal diameter of interior pipe 10 is 1.40～2.18mm, and external diameter is 1.70～2.50mm, and length is 65～118cm.Interior pipe 10 adopts three-deckers, and internal layer 24 adopts slick macromolecule polymer material, like polytetrafluoroethylene PTFE.The intermediate layer is mesh grid 23; It is stainless steel silk or the titanium-nickel wire of 0.025～0.1mm that diameter is adopted in mesh grid 23, and the silk number is 8～32, and it is 30～75 that the per inch order is counted PPI; The hardness of interior pipe 10 is strengthened and is improved in mesh grid 23, to improve the propelling movement ability of sacculus guiding catheter 1.Outermost layer 22 adopts high molecular polymers, and material is Pebax, nylon, PU, outer 22 materials from near-end to far-end hardness gradually classification reduce, can improve the propelling movement performance of sacculus guiding catheter 1 and the ability through blood vessel like this.Far-end at interior pipe 10 is equipped with a ring-type development labelling 25, and it is visible under X-ray, and sacculus guiding catheter 1 is accurately located in blood vessel.Development labelling 25 is embedded among outer 22 materials, and its material is tungsten filament or platinumiridio.
Shown in figure 11; In order to make sacculus 3 full liquid flowing channels form the passage of an one-way sealing; The mouth of pipe of the distal end 14 of outer tube 2 inwardly be contracted to be close in the outer wall of pipe 10 distal ends, the head end 15 of annular is set in the end, the distal end of outer tube 2, interior pipe 10 distal ends and head end 15 welding are formed hermetically-sealed constructions; Its advantage is that weld strength is high, the weld good seal performance.Head end 15 adopts ultra softish high molecular polymer (trade mark is 2363-90AE), and outer peripheral edges are taper.
The method for preparing of the sacculus guiding catheter of this utility model may further comprise the steps:
One, pipe in the preparation: being nested with at external diameter by level inner layer material, steel wire and outer macromolecule polymer material is 1.40～2.18mm; Length is on the metal or plastic pipe plug of 80～120cm; The annular labelling that develops is packed between the inner layer material and cladding material of far-end, and putting internal diameter outside is 2.0～3.0mm, and shrinkage ratio is 1.3: 1～2: 1 a fluorinated ethylene propylene copolymer FEP heat-shrinkable tube; The Reflow-22 03-44 type rheology machine of producing with U.S. USA ATINC company fuses together the three; 380～450 ° of F of rheology temperature, rheology speed 0.08～0.16cm/s is after the cooling; Peel heat-shrinkable tube off, extract the making that plug is accomplished interior pipe.The internal diameter of interior pipe is 1.40mm～2.18mm, and external diameter is 1.70mm～2.50mm, and length is 65cm～118cm.
Inner layer material is a politef, and internal diameter is 1.40～2.18mm, and wall thickness is 0.025～0.06mm, and length is 65～118cm.
Steel wire is that diameter is stainless steel silk or the titanium-nickel wire webmaster of 0.025～0.1mm, and the silk number is 8～32, and per inch order number is 30～75, on the braider of Grand Technology's customization, weaves rotating speed 70～180r/min).
Outer high molecular polymer, internal diameter is 1.43～2.24mm, and external diameter is 1.70～2.50mm, and length is 65～118cm; Be nylon elastomer, nylon or the polyurethane PU of U.S. pebax, material from near-end to far-end hardness gradually classification reduce, if adopt Pebax, be respectively 72D; 63D, 55D, 40D.
Development labelling internal diameter is 1.43～2.24mm, and wall thickness is 0.025～0.05mm, and length is 0.8～1.5mm, and material is tungsten or platinumiridio.
Two, preparation outer tube: at external diameter is 1.80～2.70mm, and length is coiling one deck helical spring on metal or the plastic pipe plug of 80～120cm, then the high molecular polymer pipe box is put on helical spring; Putting internal diameter is 2.0～3.0mm, and shrinkage ratio is 1.3: 1～2: 1 a fluorinated ethylene propylene copolymer FEP heat-shrinkable tube, and the Reflow-2203-44 type rheology machine of producing with U.S. USAAT INC company fuses together helical spring and high molecular polymer; 380～450 ° of F of rheology temperature, rheology speed 0.06～0.16cm/s is after the cooling; Peel heat-shrinkable tube off; Extract plug, the external diameter in the distal end 10～20cm of plug zone is less than normal than proximal outer diameter, so rheology has just produced a sunk area at the distal outer tube outer wall after intact; Two pairs of symmetric through holes are bored in far-end sunk area position at outer tube; Through-hole diameter is 0.4～0.8mm, and the centre-to-centre spacing of adjacent two through hole is 3～5mm, accomplishes outer tube and makes.The internal diameter of outer tube is 1.80～2.70mm, and external diameter is 2.10～2.90mm, and length is 52～100cm.Through-hole diameter is 0.4～0.8mm, and the centre-to-centre spacing of adjacent two through hole is 3～5mm.
Helical spring adopts medical stainless steel, Nitinol or cochrome filament winding system, circle silk or flat filament, and the silk footpath of circle silk is 0.02～0.08mm, and the silk of flat filament is thick to be 0.02～0.08mm, and silk is wide to be 0.08～0.3mm.Coiling on the L80 coiling machine that U.S. RothGreaves&Associates Inc company produces, rotating speed is 5～20r/min, helical spring pitch is 0.3～0.6mm.
The internal diameter of high molecular polymerization property management is 1.80～2.70mm, and external diameter is 2.10～2.90mm, and length is 52～100cm, is nylon elastomer, nylon or the polyurethane PU of U.S. pebax.
Three, interior pipe, distal outer tube end and head end welding: earlier interior pipe is penetrated in the outer tube; The length that the far-end of managing in making exposes outer tube is 1～2mm; Be 1.40～2.18mm with external diameter then, the metal of long 20cm or Plastic Welding plug insert interior pipe from the far-end of interior pipe, and the head end overlap joint is exposed the part of outer tube at interior pipe; Putting internal diameter is that 2.0～3.0mm. shrinkage ratio is 1.3: 1～2: 1 a fluorinated ethylene propylene copolymer FEP heat-shrinkable tube; Then on the S8-100 type catheter abutment machine that U.S. BARLEYSVIUEPA. company produces with three's the far-end regional firm welding that overlaps, 200～400 ° of F of welding temperature, weld interval 10s～30s.
Head end adopts ultra softish high molecular polymer (trade mark is 2363-90AE), is shaped as annular, and outer peripheral edges are taper, and inner edge and inner tube diameter are measure-alike, and the size of proximal end matches with interior pipe and distal outer tube end size size.
Four, joint is bonding: the KH228 type point gum machine of producing with U.S. MORCSONDFO.INC company is on the far-end contact surface of outer tube outer rim and breeches joint, smear layer of even ultraviolet cured adhesive UV glue on the contact surface of interior pipe outer rim and breeches joint near-end; The near-end of interior pipe and the outer tube far-end master endoporus from breeches joint is put in to rigging position, and the irradiation under ultraviolet ray that the DYMAX type purple light machine of producing with Shenzhen specific lamp light device factory then produces solidifies it.Be nested with the strain relief sleeve pipe at breeches joint and outer tube junction, the strain relief sleeve pipe tightened up the remote location at joint with hot-air blower.
Breeches joint is the 11658Y type joint of U.S. Qosina company, and material is a Merlon, main internal diameter 4.1mm, side opening internal diameter 2.0mm.
The strain relief sleeve pipe is 5053034137 strain relief sleeve pipes of U.S. Lapp Holding company, and material is a polyolefin, internal diameter 3.0mm.
Five, sacculus is bonding: the sunk area that sacculus is enclosed within distal outer tube; Through hole is positioned at the sacculus middle part; KH228 type point gum machine with the production of U.S. MORCSONDFO.INC company; Smear layer of even UV glue in the sacculus adhesive area, the DYMAX type purple light machine of producing with Shenzhen specific lamp light device factory then produces irradiation under ultraviolet ray it is solidified.
Sacculus adopts hyperelastic macromolecule polymer material (trade mark is 2363-80AE), and its internal diameter is 1.5～2.5mm, and wall thickness is 0.08～0.18mm, and maximum full external diameter can reach 15mm.
The method for using of the sacculus guiding catheter of this utility model may further comprise the steps:
One, prepare before the art: the side opening of sacculus guiding catheter is connected a three-way device, and connect two syringes, injection and pumpback control liquid through repeatedly are drawn out of the bubble in the sacculus fully.
Two, femoral artery puncture inserts catheter sheath, and seal wire is delivered to specified vessel position along catheter sheath, again the sacculus guiding catheter and the convergent divergent channel of this utility model is sent into specified vessel position along seal wire.
Three, convergent divergent channel and seal wire are withdrawn from, injected contrast agent through the sacculus guiding catheter and confirm lesion locations.
Four, through the sacculus guiding catheter other intervention apparatus are sent into lesion locations, treat that other apparatuses are ready after, inject the full sacculus of liquid, with the temporary interruption blood flow, implement operation.
Five, operation finishes, and shrinks sacculus, and the sacculus guiding catheter is withdrawn from the body together with other apparatuses.
Embodiment, the external diameter of sacculus guiding catheter are 2.1mm, and the effective length of conduit is 95cm, and the full diameter of the maximum of sacculus is 15mm.
Animal experiment: with the thrombectomby operation is example, selects one of 20 kilograms of dog of body weight for use, has the thromboembolism model in this dog blood vessel, the sacculus guiding catheter of present embodiment and thrombectomy device, microtubular, seal wire.Accessories such as catheter sheath one cover punctures through femoral artery, inserts the 7F catheter sheath, with 0.035 ", the seal wire of 260cm is sent into carotid artery through catheter sheath, again sacculus guiding catheter and the convergent divergent channel supporting with it is sent into carotid artery along seal wire; Convergent divergent channel and seal wire are withdrawn from, injected the position that contrast agent is confirmed thrombosis through the sacculus guiding catheter; With the combination of micro-wire and microtubular near the sacculus guiding catheter is delivered to thrombosis and pass thrombosis; Withdraw from micro-wire, through microtubular its basket discharged fully at the far-end of thrombosis thrombectomy device, this moment with the balloon expandable of sacculus guiding catheter with blocking blood flow; Microtubular and thrombectomy device are done as a whole time to be removed; Thrombectomy device begins to carry out thrombectomby; Repeat the dispose procedure of removing with basket that returns of microtubular; After the thrombosis at thromboembolism place is won by thrombectomy device fully, microtubular and thrombectomy device together returned remove, simultaneously thrombosis is drawn in together the inner chamber of sacculus guiding catheter; Shrink sacculus, together withdraw from sacculus guiding catheter and thrombectomy device in the body; Through the blood circumstance that shadowgraph technique is observed previous thromboembolism place,, promptly accomplish the excision process of this thrombosis if blood flow is unobstructed.
The thrombectomby of present embodiment is one of the effect of the sacculus guiding catheter of this utility model, and it also has effect widely, all can use the sacculus guiding catheter of this utility model at diagnosis or the provisional blocking blood flow of treatment needs.
This utility model adopts helical spring necessarily to bear under the negative pressure ability prerequisite guaranteeing that it has, and can reduce the hardness of outer tube material, to improve the compliance of conduit, makes it can get into crooked complicated blood vessel smoothly.
In the preparation process of sacculus guiding catheter, adopt the rheology method for the making of interior pipe and outer tube, pipe and outer tube surface smooth can make it that uniform and stable interior external diameter is arranged again in both can having guaranteed; Heat welded is adopted in welding for interior pipe, outer tube and head end, not only can guarantee the fastness and the sealing of its connection, can also make head end become tapering transition, improves conduit and passes through the ability of blood vessel and reduce the damage of conduit to blood vessel wall; For sacculus and the bonding employing of joint UV glue purple light irradiation curing technology, under the prerequisite that guarantees adhesive strength, can also improve the efficient of production.
Claims (10)
1. sacculus guiding catheter; It is characterized in that: said sacculus guiding catheter (1) is provided with the multiple tube of outer tube (2) and the coaxial formation of interior pipe (10); Constitute lead-in cavity of sacculus guiding catheters (1) in the interior pipe (10); Be connected with the sacculus (3) that can fill and shrink at outer tube (2) distal end, be provided with convergent divergent channel (4) in the sacculus guiding catheter (1), convergent divergent channel (4) forms sliding-contact with the lead-in cavity of sacculus guiding catheter (1).
2. sacculus guiding catheter according to claim 1; It is characterized in that: the proximal end of said sacculus guiding catheter (1) is provided with breeches joint (6); The main endoporus (7) of breeches joint (6) is communicated with the formation first passage with the inner chamber (12) of interior pipe (10); The axis of the side opening (8) of breeches joint (6) and the axes intersect of main endoporus (7) are acute angle at proximal direction, and side opening (8) is communicated with gap (16) between interior pipe (10) outer wall and outer tube (2) inwall and constitutes second channel.
3. sacculus guiding catheter according to claim 1; It is characterized in that: the internal diameter of said outer tube (2) is 1.80～2.70mm; External diameter is 2.10～2.90mm; Length is 52～100cm, is sunk area (17) at the distal end outer wall of outer tube (2), and the tube wall of sunk area (17) has through hole (13).
4. sacculus guiding catheter according to claim 3 is characterized in that: said sacculus (3) is sticked to sunk area (17).
5. sacculus guiding catheter according to claim 4 is characterized in that: said through hole (13) diameter is 0.4～0.8mm, and the centre-to-centre spacing of adjacent two through hole is 3～5mm.
6. sacculus guiding catheter according to claim 5; It is characterized in that: said outer tube (2) adopts nylon elastomer, nylon or polyurethane; Embed on outer tube (2) inwall helical spring (20) is arranged; Helical spring (20) adopts stainless steel, Nitinol or cochrome silk, and pitch is 0.015～0.024mm.
7. sacculus guiding catheter according to claim 1; It is characterized in that: the internal diameter of pipe (10) is 1.40～2.18mm in said, and external diameter is 1.70～2.50mm, and length is 65～118cm; Interior pipe (10) adopts three-decker; The internal layer (24) of interior pipe (10) adopts politef, and the intermediate layer is that diameter is stainless steel silk or the titanium-nickel wire mesh grid (23) of 0.025～0.1mm, and nylon elastomer, nylon or polyurethane are adopted in outer (22).
8. sacculus guiding catheter according to claim 7 is characterized in that: said skin (22) material reduces from the classification of near-end to far-end hardness.
9. sacculus guiding catheter according to claim 8 is characterized in that: the far-end of pipe (10) is equipped with a ring-type development labelling (25) in said, and development labelling (25) is embedded among skin (22) material, and its material is tungsten filament or platinumiridio.
10. sacculus guiding catheter according to claim 1 is characterized in that: far-end (5) end of said convergent divergent channel (4) is taper, and tapered distal end (5) all exposes the distal end of sacculus guiding catheter (1).
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| CN2011205045528U CN202366306U (en) | 2011-12-07 | 2011-12-07 | Balloon guiding catheter |
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| CN2011205045528U CN202366306U (en) | 2011-12-07 | 2011-12-07 | Balloon guiding catheter |
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| CN202366306U true CN202366306U (en) | 2012-08-08 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994203A (en) * | 2016-01-22 | 2017-08-01 | 上海微创医疗器械（集团）有限公司 | Guiding catheter and preparation method thereof |
| CN107007922A (en) * | 2017-03-28 | 2017-08-04 | 广州启骏生物科技有限公司 | A kind of nasal sinus balloon expandable and therapeutic system |
| CN107050625A (en) * | 2017-01-17 | 2017-08-18 | 重庆市江津区中心医院 | Anti- depth inserts enhancing support type guiding catheter |
| CN107096117A (en) * | 2017-04-24 | 2017-08-29 | 沙俊诚 | One kind is used to intervene the two-way radiography three-way device of operation |
| CN107550537A (en) * | 2017-10-18 | 2018-01-09 | 孙永全 | A kind of closed drainage system suitable for CSDH and closed drainage tube |
| CN109908453A (en) * | 2019-03-15 | 2019-06-21 | 兰州大学第一医院 | A kind of auxiliary guiding catheter passes through the device of tortuous blood vessel |
| CN109998635A (en) * | 2019-05-19 | 2019-07-12 | 常州市三润医疗器械科技有限公司 | Unidirectional thrombus remove device |
| CN111449722A (en) * | 2020-04-08 | 2020-07-28 | 上海心玮医疗科技有限公司 | Intravascular delivery system |
| CN111729180A (en) * | 2020-05-28 | 2020-10-02 | 广州新诚生物科技有限公司 | Vertebral body expansion device and using method |
| JP2021053172A (en) * | 2019-09-30 | 2021-04-08 | 日立金属株式会社 | Medical braided tube assembly |
| CN113181516A (en) * | 2021-04-23 | 2021-07-30 | 谱高医疗科技(南京)有限公司 | Mixed winding method for preparing micro-catheter and using equipment |
| CN113398442A (en) * | 2021-07-28 | 2021-09-17 | 茂名市人民医院 | Neurovascular semi-compliance balloon dilatation micro-catheter |
| CN114073811A (en) * | 2020-09-21 | 2022-02-22 | 至善介入消融技术研究院(南京)有限公司 | Balloon catheter and manufacturing method thereof |
| WO2022100403A1 (en) * | 2020-11-13 | 2022-05-19 | 微创神通医疗科技（上海）有限公司 | Balloon catheter |
| CN115501456A (en) * | 2021-06-22 | 2022-12-23 | 上海加奇生物科技苏州有限公司 | Guiding device |
| CN115501456B (en) * | 2021-06-22 | 2024-04-26 | 上海加奇生物科技苏州有限公司 | Guiding device |
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2011
- 2011-12-07 CN CN2011205045528U patent/CN202366306U/en not_active Expired - Fee Related
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106994203A (en) * | 2016-01-22 | 2017-08-01 | 上海微创医疗器械（集团）有限公司 | Guiding catheter and preparation method thereof |
| CN107050625A (en) * | 2017-01-17 | 2017-08-18 | 重庆市江津区中心医院 | Anti- depth inserts enhancing support type guiding catheter |
| CN107050625B (en) * | 2017-01-17 | 2023-05-23 | 重庆市江津区中心医院 | Deep insertion-preventing reinforced supporting type guiding catheter |
| CN107007922A (en) * | 2017-03-28 | 2017-08-04 | 广州启骏生物科技有限公司 | A kind of nasal sinus balloon expandable and therapeutic system |
| CN107096117A (en) * | 2017-04-24 | 2017-08-29 | 沙俊诚 | One kind is used to intervene the two-way radiography three-way device of operation |
| CN107550537A (en) * | 2017-10-18 | 2018-01-09 | 孙永全 | A kind of closed drainage system suitable for CSDH and closed drainage tube |
| CN109908453A (en) * | 2019-03-15 | 2019-06-21 | 兰州大学第一医院 | A kind of auxiliary guiding catheter passes through the device of tortuous blood vessel |
| CN109998635A (en) * | 2019-05-19 | 2019-07-12 | 常州市三润医疗器械科技有限公司 | Unidirectional thrombus remove device |
| CN109998635B (en) * | 2019-05-19 | 2024-03-26 | 常州市三润医疗器械科技有限公司 | Unidirectional thrombus removing device |
| JP2021053172A (en) * | 2019-09-30 | 2021-04-08 | 日立金属株式会社 | Medical braided tube assembly |
| JP7251430B2 (en) | 2019-09-30 | 2023-04-04 | 株式会社プロテリアル | medical braided tube assembly |
| CN111449722B (en) * | 2020-04-08 | 2021-03-30 | 上海心玮医疗科技股份有限公司 | Intravascular delivery system |
| CN111449722A (en) * | 2020-04-08 | 2020-07-28 | 上海心玮医疗科技有限公司 | Intravascular delivery system |
| CN111729180A (en) * | 2020-05-28 | 2020-10-02 | 广州新诚生物科技有限公司 | Vertebral body expansion device and using method |
| CN114073811A (en) * | 2020-09-21 | 2022-02-22 | 至善介入消融技术研究院(南京)有限公司 | Balloon catheter and manufacturing method thereof |
| WO2022100403A1 (en) * | 2020-11-13 | 2022-05-19 | 微创神通医疗科技（上海）有限公司 | Balloon catheter |
| CN113181516A (en) * | 2021-04-23 | 2021-07-30 | 谱高医疗科技(南京)有限公司 | Mixed winding method for preparing micro-catheter and using equipment |
| CN113181516B (en) * | 2021-04-23 | 2022-07-15 | 谱高医疗科技(南京)有限公司 | Mixed winding method for preparing micro-catheter and using equipment |
| CN115501456A (en) * | 2021-06-22 | 2022-12-23 | 上海加奇生物科技苏州有限公司 | Guiding device |
| CN115501456B (en) * | 2021-06-22 | 2024-04-26 | 上海加奇生物科技苏州有限公司 | Guiding device |
| CN113398442A (en) * | 2021-07-28 | 2021-09-17 | 茂名市人民医院 | Neurovascular semi-compliance balloon dilatation micro-catheter |
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