One kind takes bolt lead sheath and its core arrangement and sheath structureTechnical field
The present invention relates to one kind to take bolt lead sheath and its core arrangement and sheath structure.
Background technology
Of the prior art take ties system more if data of publication of application is that June 20, application publication number in 2017 areShown in the application for a patent for invention of CN106859728A, the application for a patent for invention disclose it is a kind of it is new take bolt conduit system, this takesBolt conduit system includes seal wire, is disposed with from inside to outside in the outside of seal wire and takes bolt foley's tube, occluding catheter sheath, conduitSheath, in the prior art, the one end for defining the close operating personnel for taking bolt foley's tube, occluding catheter sheath, catheter sheath and seal wire isNear-end, one end away from operating personnel are distal end.When specifically used, under local anesthesia after percutaneous puncture success, in the blood vesselsSeal wire is penetrated, follow up expander and catheter sheath under seal wire guiding, by near-end of the catheter sheath with proceeding to thrombus, releases expander,The distal end of catheter sheath is kept to be located at thrombus near-end.Occluding catheter is intrathecal to have guidewire lumen, by occluding catheter under the guiding of seal wireSheath in the inner cavity of catheter sheath by following up, finally, with bolt foley's tube of keeping forging ahead in the guidewire lumen of occluding catheter sheath.This takes bolt conduitIn system, in occluding catheter sheath and take to be both provided with bolt foley's tube and suppress sacculus, follow-up in place when, occluding catheter sheath and takeThe far and near both ends suppressed sacculus and be divided into thrombus of bolt foley's tube, after rising is suppressed by thrombus be confined to two sacculus itBetween.When taking bolt, proximally pull and take bolt foley's tube, thrombus is pulled to the intrathecal thrombus of completing of occluding catheter takes out operation.
This is taken in bolt conduit system by presetting seal wire in the blood vessels, and catheter sheath and occluding catheter sheath are being mounted in seal wireOutside, conveying of the seal wire to the direction distal end of catheter sheath and occluding catheter sheath be oriented to, and makes catheter sheath and occluding catheter sheathThe setting position of blood vessel can be successfully delivered to.But in the prior art, catheter sheath and occluding catheter sheath towards distal end intoDuring row conveying, the distal end of catheter sheath and occluding catheter sheath is inserted in from the near-end of seal wire will be led from operating personnel to distal end force againPipe sheath and occluding catheter sheath are conveyed to distal end.Seal wire installs process more by the whole length of catheter sheath and occluding catheter sheathTrouble, seal wire and catheter sheath, stop that the exchange length of catheter sheath is larger, moreover, the near-end of seal wire can not be held for operating personnel,It is easy to cause the position play of seal wire.
Authorization Notice No. is that a utility model patent of CN202568333U discloses a kind of ERCP hands of fast exchangeArt apparatus, the operating theater instruments include sheath, the perforation passed through for operating theater instruments are provided with sheath, pass through core in the distal end of sheathAxis connection has a fast exchange head, and fast exchange head is perforated equipped with seal wire, when specifically used, seal wire is perforated by seal wire inPass through, realize the quick conveying of sheath.But due to there is provided fast exchange head, being conveyed by sheath in place, subsequently by sheathIn pipe during conveying operating theater instruments, the fast exchange head of sheath distal end easily stops the entrance of operating theater instruments, especially for takingFor bolt operation, due to the influence on fast exchange head, take bolt conduit by Biochemical analyzer or can not be pulled in sheath.Moreover,More complicated in the overall structure that the distal end of sheath sets fast exchange head to also result in sheath, fast exchange head is also easyDrop.
The content of the invention
It is an object of the invention to provide one kind to take bolt lead sheath, to solve additionally to set in the front end of lead sheath in the prior artFast exchange connector and influence subsequently to take the technical problem used of the operating theater instruments such as bolt conduit；Also providing use takes bolt lead sheath to useCore arrangement and take bolt lead sheath sheath structure.
To achieve the above object, the present invention takes the technical solution of bolt lead sheath to be：
1：One kind takes bolt lead sheath, including the inner core and sheath that hardness becomes larger from the inside to the outside, and the inner core is to be opened with near-endMouthful and distal openings tubular structure, take bolt lead sheath to further include the distal end side wall through sheath and inner core and connect inner core inner cavity andSeal wire perforation structure outside sheath, is tied so that the near-end of seal wire is penetrated by the distal openings of inner core and perforated by the seal wireIt is pierced by structure, the sheath seal wire in the perforation of inner core seal wire and sheath that seal wire perforation structure includes being divided on inner core is perforated.
The beneficial effects of the invention are as follows：It is provided by the invention to take bolt lead sheath to include the inner core that hardness becomes larger from the inside to the outsideAnd sheath, the hardness of inner core is larger to be oriented to the conveying for taking bolt lead sheath, and the hardness of sheath is smaller can be prevented from taking boltLead sheath damages blood vessel.The perforation of sheath seal wire is provided with sheath, the perforation of inner core seal wire, sheath are provided with inner coreSeal wire is perforated and inner core seal wire perforates to form seal wire perforation structure.When specifically used, make the near-end of seal wire by inner core distal openingsInto and by be pierced by the seal wire perforation structure, seal wire, to taking bolt lead sheath to guide, can be realized and led during travelingSilk and the fast exchange for taking bolt lead sheath.Moreover, compared with fast exchange connector is additionally set in the distal end of sheath in the prior art,The seal wire perforation structure of the present invention is arranged on the distal end side wall for taking bolt lead sheath, and the follow-up distal end for taking bolt apparatus will not be pierced byImpact.
2：On the basis of 1, inner core seal wire perforation and sheath seal wire perforation extending direction be by outside sheath to inner coreIt is internal and from taking the near-end of bolt lead sheath to taking the distal end of bolt lead sheath to extend.
3：On the basis of 1, the inner core is rotatably arranged in sheath, and the outside of inner core is equipped with hydrophilic coating, describedThe near-end outer circumferential surface of inner core is equipped with inner core cue mark, and the near-end outer circumferential surface of sheath is equipped with sheath cue mark, and inner core refers toIndicating note and inner core seal wire perforation, sheath cue mark and sheath seal wire perforation deflect identical angle in the circumferential.
4：On the basis of 3, inner core cue mark and sheath cue mark are scribing in the indicating graduation on corresponding componentLine.
5：On the basis of 1 to 4 any one, the internal diameter of inner core is 4F-7F, and the internal diameter of sheath is 5F-8F, inner core seal wireThe internal diameter of perforation and the perforation of sheath seal wire is 0.38-0.40inch.
6：On the basis of 1 to 4 any one, the inner core has the inner core extension section being pierced by by the distal end of sheath, instituteThe distal end for stating inner core extension section has the arcuate guide portion being used for taking the steering of bolt lead sheath to guide.
7：On the basis of 1 to 4 any one, sheath includes close to the vascular protection section of sheath distal end and near close to sheathThe bending resistance trisection at end, the hardness of the vascular protection section are less than the hardness of bending resistance trisection.
8：On the basis of 7, the length ratio of the vascular protection section and bending resistance trisection is 1:10-1:2.
9：On the basis of 7, sheath includes matrix and wraps up in the metal wire rod on matrix, the metal at vascular protection sectionWire rod is wrapped up on matrix in a manner of ring-wound, and the metal wire rod at bending resistance trisection is wrapped up in arranged on matrix in a manner of nettingOn.
10：On the basis of 7, the intersection of the bending resistance trisection and vascular protection section is provided with for showing the aobvious of lead sheathShadow component.
11：On the basis of 1 to 4 any one, the distal outer of sheath blocks suppressing for blood vessel after being additionally provided with expansionFormula sacculus, sheath, which is equipped with, to be used for the exterior fluid passage suppressed fluid and be delivered in pressing type sacculus.
12：On the basis of 11, sheath includes sheath tube body and sealing shroud is mounted in the elastic film of sheath body exterior, bulletProperty film be equipped with the connected entrance for connecting the pressing type sacculus, septal pathways and institute between sheath tube body and elastic filmState connected entrance and collectively form the fluid passage.
13：It is both provided with the proximal end of pressing type sacculus and far-end on the basis of 12, in sheath and is beaten for showingThe developing parts of pressure type sacculus.
The present invention takes the bolt lead sheath to be with the technical solution of core arrangement：
1：One kind takes bolt lead sheath core arrangement, includes the inner core of tubulose, inner core has proximal openings and distal openings, described interiorOffered on the distal end side wall of core connection inner core inside and outside inner core seal wire perforation, for seal wire near-end by inner core distal openingsPenetrate and be pierced by by the inner core seal wire.
2：On the basis of 1, the extending direction of inner core seal wire perforation be by outside inner core to interior core inner and by interiorThe near-end of core extends to the distal end of inner core.
3：On the basis of 1 or 2, the outside of the inner core is equipped with hydrophilic coating, is set on the near-end outer circumferential surface of the inner coreIt is useful for coordinating with sheath cue mark to judge the inner core indicateing arm of the perforation of inner core seal wire and sheath seal wire perforation relative positionNote.
4：On the basis of 3, the inner core cue mark is scribing in the indicator graduation lines on inner core.
5：On the basis of 1 or 2, the inner core has the inner core extension section for being used for being pierced by by the distal end of sheath, described interiorThe distal end of core extension section has the arcuate guide portion being used for taking the steering of bolt lead sheath to guide.
The present invention takes the bolt lead sheath to be with the technical solution of sheath structure：
1：One kind takes bolt lead sheath sheath structure, including sheath, and sheath has proximal openings and a distal openings, the sheath it is remoteThe sheath seal wire perforation inside and outside connection sheath is offered on the wall of side, is penetrated simultaneously by the distal openings of sheath for the near-end of seal wireIt is pierced by by the sheath seal wire.
2：On the basis of 1, the extending direction of sheath seal wire perforation be by outside sheath to inside sheath and by sheathThe near-end of pipe extends to the distal end of sheath.
3：On the basis of 1 or 2, the near-end outer circumferential surface of the sheath, which is equipped with, to be used to coordinate to sentence with inner core cue markDisconnected sheath seal wire perforation and the sheath cue mark of inner core seal wire perforation relative position.
4：On the basis of 3, the sheath cue mark is scribing in the indicator graduation lines in sheath.
Brief description of the drawings
Fig. 1 takes the cooperation schematic diagram that bolt lead sheath and seal wire are taken in bolt lead sheath embodiment for the present invention；
Fig. 2 is the enlarged drawing at A in Fig. 1；
Fig. 3 takes sheath and the outside schematic diagram of inner core in bolt lead sheath embodiment for the present invention；
Fig. 4 is the schematic diagram that the present invention takes sheath in bolt lead sheath embodiment.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment for taking bolt lead sheath of the present invention, as shown in Figures 1 to 4, definition take the close operator of bolt lead sheathMember and to connect one end of female Luer be near-end, one end away from operating personnel is distally.The present embodiment is with the thrombus to encephalicIt is illustrated exemplified by being extracted, it is similarly, of the invention to take what bolt lead sheath was also applied for other positions of human body to take bolt to operate.
Bolt lead sheath is taken to include sheath, sheath includes sheath tube body 1, and sheath tube body 1 is the structure of tubulose, in sheath tube body 1Inside there is tube chamber, tube chamber is used for accommodating seal wire 2 and for taking bolt apparatus to pass through.Film is housed in the outer cover of sheath tube body 13, the proximally and distally seal being proximally and distally fixedly linked and ensure film with sheath of film 3.Film 3 has certainElasticity, when being acted on from external force, film 3 is adjacent on the outer wall of sheath tube body 1；When between sheath tube body 1 and film 3When being filled with gas or liquid, film 3, which is pressurized, occurs elastic deformation, and supplied gas or liquid pass through.
Inner core 2 is also coated with the inside of sheath tube body 1, inner core 2 is installed in rotation in sheath tube body 1, also, interiorCore 2 can be by passing through and extracting in sheath tube body 1.The inside of inner core 2 has tube chamber, and the distal end of inner core 2 is by the remote of sheath tube body 1It is pierced by end, also, there is certain curvature in the part being pierced by, is led easy to carry out turn when taking bolt lead sheath and intravascular conveyingTo avoiding that blood vessel is caused to damage.The hardness of inner core 2 is more than the hardness of sheath tube body 1, can ensure that conveying is convenient, is oriented to justDamage really and to blood vessel is smaller.There is hydrophilic coating on the outer surface of inner core 2, since the hardness of inner core 2 is larger, inner core2 can proximally and distally realize synchronous rotation, and personnel are by controlling the near-end i.e. rotatable whole inner core 2 of inner core 2.
, it is necessary to install expander in the distal end for taking bolt lead sheath when being aspirated to the thrombus of encephalic, expander is passed through into bloodIn pipe, and progressively bolt lead sheath will be taken to send to thrombus, after conveying in place, expander exits, and inner core exits, then is penetrated in sheathBolt apparatus is taken, thrombus is crushed, is aspirated.Material due to taking bolt lead sheath is softer, will directly take bolt lead sheath and expanderIt is sent at thrombus, takes bolt lead sheath easily to deviate the track of setting and the position of setting can not be reached.In the prior art for above-mentionedThe problem of, place seal wire in the blood vessels first, the distal end of seal wire is sleeved on seal wire close to thrombus, then by the distal end for taking bolt lead sheathOn near-end, operating personnel hold and take bolt lead sheath afterwards, and bolt lead sheath will be taken constantly to be conveyed to distal end, after conveying in place, by seal wireTake out, bolt conduit is taken taking to penetrate in bolt lead sheath, take out pipe taking the rear end of bolt lead sheath to install, thrombus is aspirated.The partContent belongs to the related content of the prior art, will not be described in further detail in the present invention.
But in the prior art, when conveying takes bolt lead sheath, take the exchange length of bolt lead sheath and seal wire larger, install processInconvenience, moreover, operating personnel can not hold the near-end of seal wire, the easy play of seal wire.
For the problem, in the present invention, sheath seal wire perforation 6 is opened up on the distal end side wall of sheath, sheath seal wire is wornHole 6 is by penetrating through sheath tube body 1 and film 3.Inner core seal wire perforation 7, two seal wire perforation are opened up on the distal end side wall of inner coreSeal wire perforation structure is formed, seal wire 5 passes through when two seal wire perforation are to corresponding to, and seal wire perforation structure connects the inner cavity of inner coreWith the outside of sheath.As seen from Figure 2, two seal wires perforation is in tilted layout, incline direction be by sheath tube body 1 near-end toDistal end extends and from the outside of sheath to the internal stretch of inner core so that seal wire 5 when perforating through seal wire, lead as far as possible by holdingThe position of silk is constant, ensures that bending does not occur as far as possible for seal wire.
In the present embodiment, the internal diameter of inner core is 4F-7F, and the internal diameter of sheath is 5F-8F（Wherein 3F=1mm）, and seal wire is perforatedInternal diameter be 0.38-0.40inch.Inner core, sheath and seal wire perforation internal diameter it is bigger, therefore, opened up on bolt lead sheath is takenSeal wire perforation will not produce large effect to the seal for taking bolt lead sheath, and the large area of liquid or gas will not be caused to reveal.
It is provided with pressing type sacculus 4 outside the front end of sheath tube body 1, in the present embodiment, the both ends of pressing type sacculus 4 are consolidatedIt is scheduled on the distal end outer wall of sheath tube body 1, it is aobvious positioned at being proximally and distally provided with for pressing type sacculus 4 in sheath tube body 1Shadow component, such as radiopaque developing ring, can show that the specific location of pressing type sacculus 4 in the blood vessels.The present embodimentIn, pressing type sacculus 4 is compliant balloon, identical along the length direction degrees of expansion of sheath tube body 1 when by compression swelling.ThinFilm 3 with opening up connected entrance on 4 corresponding part of pressing type sacculus（It is not drawn into figure）, between film 3 and sheath tube body 1Passage and connected entrance together constitute fluid passage, exterior can be suppressed fluid（Gas or liquid）Input to pressing typeAt sacculus 4 and expand pressing type sacculus 4.
In the present embodiment, the hardness proximally and distally of sheath tube body 1 is different, and the hardness of 1 distal end of sheath tube body is smaller, sheathThe hardness of 1 near-end of tube body is larger.By the distal end hardness Design of sheath tube body 1 for it is smaller be to exist in order to prevent in sheath tube body 1During intravascular conveying, blood vessel is caused to damage.By the near-end hardness Design of sheath for it is larger be for anti-torsion, prevent sheathThe near-end of sheath occurs kinking and influences penetrating for sheath when the distal end of pipe is obstructed, the conveying of personnel easy to operation.The present embodimentIn, sheath tube body 1 includes matrix and external protection, further includes the metal wire rod being arranged between matrix and external protection.SheathThe metal wire rod of distal end is arranged between matrix and external protection in a manner of ring-wound, is constituting multiple elastic coil structures10, the hardness of elastic coil structures 10 is overall smaller.The metal wire rod of 1 near-end of sheath tube body be arranged in the form of netting matrix andBetween protective layer, netting structure 12 is formed.The metal wire rod of 1 near-end of sheath tube body is connected with the metal wire rod of sheath distal end.CompileThe hardness of the metal wire rod of web frame 12 is larger.It is remote to change sheath that metal wire rod is arranged to different forms in the present embodimentHold with the hardness of near-end to meet different use demands.
In the present embodiment, the sheath tube portion where elastic coil structures 10 forms the vascular protection section of sheath, netting structure 12The length ratio of the bending resistance trisection of the sheath tube portion composition sheath at place, vascular protection section and bending resistance trisection is 1:10.In blood vesselThe intersection of protection section and bending resistance trisection is provided with developing parts 11, and developing parts 11 can be radiopaque developing ring etc.,The position of sheath can be shown by developing parts, personnel easy to operation observe the location of sheath at any time.
In the present embodiment, the proximal end of inner core 2 is provided with inner core cue mark 8, is set in the proximal end of sheath tube body 1There is sheath cue mark 9, wherein, inner core cue mark 8 and the perforation 7 of inner core seal wire are corresponding in the axial direction, rotate 0 in the circumferentialDegree, sheath cue mark 9 and the perforation 6 of sheath seal wire are corresponding in the axial direction, rotate 0 degree in the circumferential.Can be with by above-mentioned introductionKnow, the hardness of inner core 2 it is larger and it is exterior be provided with hydrophilic coating, inner core 2 can realize front and rear synchronous rotation, therefore, useWhen, rotate inner core 2 after it is whether overlapping by observing inner core cue mark 8 and sheath cue mark 9, can interpolate that out inner core seal wireWhether perforation 7 and sheath seal wire perforation 6 are overlapped so that seal wire passes through.In the present embodiment, inner core cue mark and sheath indicateing armNote can be scribing in the indicator graduation lines on inner core and sheath, in other embodiments, can be in inner core and the near-end of sheathPaste extra cue mark in place.In other embodiments, inner core cue mark 8 and inner core seal wire perforation 7 between, sheath indicateThe identical angle of circumferentially-spaced rotation between mark 9 and sheath seal wire perforation 6.
Female Luer is installed taking the rear end of bolt lead sheath（It is not drawn into figure）, female Luer include two opening, whereinOne opening is used for injecting liquid to the part between sheath and film, and for connecting the vacuum injection used in aspiration vacuum；Another opening is used for taking bolt apparatus to pass through for follow-up.
The use process of the present invention is as follows：When extracting thrombus, seal wire 5 is penetrated into endovascular setting position first, then willTake the distal end of bolt lead sheath to penetrate the near-end of seal wire 5, and make the near-end of seal wire 5 by being pierced by seal wire perforation structure.Operating personnel's handThe near-end of taking bolt lead sheath is simultaneously constantly pushed ahead, and bolt lead sheath will be taken to be delivered to endovascular setting position, afterwards by inner core andSeal wire pulls out, and only leaves sheath in the blood vessels, and the stretching into and by setting a road of bolt apparatus is taken to be follow-up.Afterwards, lead toCross female Luer and liquid is squeezed into the gap between sheath and film, liquid is transported at pressing type sacculus 4 through the gap, makesPressing type sacculus 4 expands, and blocks blood vessel, it is therefore prevented that blood during take bolt in heart flow into encephalic by the blood vessel andThrombus is carried to encephalic.After the completion of closure, it is put into sheath and takes bolt apparatus to carry out taking bolt.During taking bolt, in order toSubnormal ambient is formed in sheath and flows into encephalic to prevent the chip of tampon, the structure vacuumized is connected in female Luer, it is such as trueEmpty syringe etc..
In other embodiments, the ratio of elastic coil structures and netting structure can make choice according to actual conditions, butIt is generally kept in 1:10-1:Between 2.In other embodiments, the pore size of inner core, sheath and seal wire perforation can be according to realityBorder situation makes choice matching.
In the present embodiment, the perforation of inner core seal wire and inner core constitute core arrangement, and sheath tube body and film constitute sheath,Sheath seal wire is perforated and sheath constitutes sheath structure.Inner core seal wire is perforated and the perforation of sheath seal wire together constitutes seal wire perforationStructure.
In the present embodiment, the part stretched out in inner core by the distal end of sheath constitutes inner core extension section, inner core extension sectionDistal end has an arcuate guide portion, arcuate guide portion can to take bolt lead sheath to turn in the blood vessels more smooth, to take bolt lead sheath intoRow is oriented to.
The present invention takes the core arrangement one of the specific embodiment of bolt lead sheath core arrangement, core arrangement and above-described embodimentCause, its content repeats no more.
The present invention takes the sheath structure one of the specific embodiment of bolt lead sheath sheath structure, sheath structure and above-described embodimentCause, its content repeats no more.