CN208838264U - The accurate implant system of the bracket of branch vessel - Google Patents

Abstract

This disclosure relates to a kind of accurate implant system of the bracket of branch vessel, branch vessel includes interconnected main blood vessel and the branch vessel that is connected to main blood vessel, the accurate implant system of bracket includes releasedly storage support and conveying the stent conveying device of the bracket, the guiding wire of branch vessel is extended to from main blood vessel, and the positioning guide wire extended along main blood vessel, stent conveying device is movably set in outside guiding wire, stent conveying device include releasable be coated on bracket periphery bound film, limit hole is provided on bound film or on bracket, positioning guide wire is slidably disposed through limit hole, with can be in axial and circumferential locating support.Through the above technical solution, bracket is under the action of passing through the positioning guide wire of limit hole, the opening of branch vessel can be locked on, bracket is enabled precisely to fit in opening portion, bracket can be discharged by strutting bound film or bound film being removed external mode, such implant system structure is simple, operates simple and easy.

Description

The accurate implant system of the bracket of branch vessel

Technical field

This disclosure relates to the stenter to implant field of blood vessel, and in particular, to a kind of bracket of branch vessel, which is precisely implanted into, is System.

Background technique

Hemadostewnosis, occlusion are that the disease of a kind of high disability rate and high mortality is implanted into the blood vessels for this disease Bracket is one of main treatment method.The technology is that bracket is transported to lesion locations, is blocked for radial support Blood vessel.Wherein, also different with the type of implantation position and the different blood vessel bracket for the treatment of disease, structure and implantation. Currently, widely used bracket includes bare bracket, coating bracket etc., the ways of relief of bracket can be divided into ball and expand mode and from swollen side Formula.And implantation is mostly to free again after guiding compressed bracket to implantation position by seal wire.Wherein, ball expands solution off-square Formula is by being preset in the spherical air bag of internal stent filling liquid (gas) to withdraw from after expanding bracket, from swollen solution off-square to being located at Formula be by will storage withdrawn by the lead sheath of compressed stent after, flicked by the elastic construction of bracket itself.Wherein either ball Expand the implantation still from swollen mode, all there are problems that the accurate positionin of bracket and adapts to a variety of blood vessel structures.Such as have The opening portion of the branched vessel structure of branch vessel, not only the structure of intravascular stent itself needs special designing, but also implantation side Formula, which is also required to accordingly improve to meet, is accurately implanted into the purpose of bracket in such position.This is because branch vessel and main blood Coupling part, that is, opening portion structure of pipe has the circumferential structure of arc-shaped transition structure and blood vessel also different, it is therefore desirable to A kind of bracket and implant system that can be accurately implanted into branch vessel is used for the implant system of such intravascular stent in the related technology It generally includes the lead sheath of transfer gantry, lead core and plunger tip, the step of when this structure implantation bracket needs is various, operates multiple Miscellaneous trouble.

Utility model content

Purpose of this disclosure is to provide a kind of accurate implant system of the bracket of branch vessel, the accurate implant system energy of the bracket Enough so that bracket is accurately implanted in branch vessel, and structure is simple, easily operated.

To achieve the goals above, the disclosure provides a kind of accurate implant system of bracket of branch vessel, branch's blood Pipe includes the main blood vessel being interconnected and the branch vessel being connected to the main blood vessel, and the accurate implant system of bracket includes that can release It puts ground storage support and conveys the stent conveying device of the bracket, led from the guiding that the main blood vessel extends to the branch vessel Silk and the positioning guide wire extended along the main blood vessel, the stent conveying device are movably set in the guiding wire Outside, the stent conveying device include releasable be coated on the bracket periphery bound film, on the bound film or institute It states and is provided with limit hole on bracket, the positioning guide wire is slidably disposed through the limit hole, can determine in axial and circumferential The position bracket.

Optionally, the limit hole is formed by the stop collar being connected on the bound film.

Optionally, the bracket has main part and positioned at the opening portion of the main part rear end, and the main part is formed as Straight tube structure, the opening portion are formed as flared structure.

Optionally, the bracket has main part and positioned at the opening portion of the main part rear end, and the main part is formed as The plane of the opening of straight tube structure, the opening portion is obliquely installed relative to the axis of the main part.

Optionally, the stent conveying device includes the core of leading that can be moved along the guiding wire, the limit hole setting On the bound film, the core of leading holds out against the internal stent in tightening state.

Optionally, the limit hole is formed in the position of the corresponding opening portion on the bound film.

Optionally, the stent conveying device includes the core of leading that can be moved along the guiding wire, it is described lead core with it is described Bound film connection.

Optionally, the bound film is sutured by suture, to coat the bracket.

Optionally, the suture includes that can extend to external extension.

Optionally, the outer cover of the extension is equipped with and extends to external protection pipe.

Through the above technical solutions, after bracket enters branch vessel along guiding wire under the action of stent conveying device, Bracket can be locked on the opening of branch vessel under the action of passing through the positioning guide wire of the limit hole on bound film, so as to Precise positioning bracket in the axial direction, equally, for positioning guide wire after tension, limit hole is equally true relative to the circumferential direction of bracket Fixed, therefore the circumferential direction of bracket can be made also to be accurately positioned, thus enable the rack to accurately be implanted into branch vessel, this When can discharge bracket by way of freeing bound film, bracket can be enabled precisely to fit in vascular wall, example in this way Such as its opening portion, such implant system structure is simple, operates simple and easy.

Other feature and advantage of the disclosure will the following detailed description will be given in the detailed implementation section.

Detailed description of the invention

Attached drawing is and to constitute part of specification for providing further understanding of the disclosure, with following tool Body embodiment is used to explain the disclosure together, but does not constitute the limitation to the disclosure.In the accompanying drawings:

Fig. 1 is the accurate implant system of bracket for the branch vessel that one illustrative embodiments of the disclosure provide in implantation process In structural schematic diagram；

Fig. 2 is the enlarged structure schematic diagram in the portion A in Fig. 1；

Fig. 3 is knot of the stenter to implant with angular cut of one illustrative embodiments of disclosure offer in branch vessel Structure schematic diagram.

Description of symbols

1 main 2 branch vessel of blood vessel

3 bound film, 31 suture

311 protection pipe, 4 guiding wire

5 positioning guide wire, 6 bracket

61 main part, 62 opening portion

7 limit holes 8 lead core

Specific embodiment

It is described in detail below in conjunction with specific embodiment of the attached drawing to the disclosure.It should be understood that this place is retouched The specific embodiment stated is only used for describing and explaining the disclosure, is not limited to the disclosure.

In the disclosure, in the absence of explanation to the contrary, the noun of locality used such as " inside and outside " typically refers to homologue Body profile it is inner and outer, " forward and backward " is then usually to be defined based on the implantation direction of blood vessel by bracket and associated components, That is, corresponding component moves forward into blood vessel, blood vessel is exited back.These nouns of locality are served only for illustrating the disclosure, are not limited to The disclosure.

As shown in Figure 1, can usually encounter the branch vessel with branch in intravascular stent implant surgery, i.e. the branch Blood vessel includes main blood vessel 1 and the branch vessel 2 that is connected to the main blood vessel 1, i.e. branch vessel 2 is connected on the side wall of main blood vessel 1, by Join domain between branch vessel 2 and main blood vessel 1 has arc-shaped transition, so that the opening close to main blood vessel 1 of branch vessel 2 Abducent flared structure is presented in size, in this way if being implanted into existing straight barrel type bracket, incites somebody to action so that bracket is in branch vessel 2 Opening cannot fully fit in vascular wall, and the bracket for making the region and vascular wall are formed thrombus to cause blood in this way Pipe lesion.Therefore, it is necessary to use a kind of horn opening bracket, the opening shape of the bracket is tubaeform as what is opened outward, from And the opening transitional region of the branch vessel 2 of branch vessel can be fitted in well.In addition, between branch vessel 2 and main blood vessel 1 When with tilt angle, if still using straight barrel type bracket, after bracket positioning, the open rearward end of bracket will be extended partially into master In blood vessel 1, the blocking to main blood vessel 1 will cause in this way, it is therefore desirable to which a kind of bracket with angular cut is can adapt to tilt Branch vessel 2.However, either tubaeform or beveling mouth structure opening, will all face and need the circumferential direction standard of bracket Otherwise the problem of determining position will not adapt to the shape of the opening of branch vessel 2 in circumferential direction, cause bracket effect poor.Cause This, in implantation process, the control of circumferential direction and axial position to bracket all has high requirement.Accordingly, the disclosure mentions For a kind of accurate implant system of the bracket for branch vessel, the axial position of bracket and the essence of circumferential direction can effectively ensure that Certainly position.

Wherein, as depicted in figs. 1 and 2, in one embodiment, the bracket 6 for needing to be implanted into includes main part 61 and position In the opening portion 62 of 61 rear end of main part, main part 61 is formed as straight tube structure to adapt to the vascular wall of respective branch blood vessel, and Opening portion 62 is formed as open outward flared structure to adapt to the opening of branch vessel, and specifically, opening portion 62 is formed as Open arc-shaped transition structure outward, to adapt to the shape of branch vessel opening.Wherein the specific structure of the flared structure needs The structure that depend on be implanted into branch vessel 2 opening, all falls in the protection scope of the disclosure various modifications.

In addition, except it is this with the bracket of horn opening structure in addition to, as shown in figure 3, in another middle embodiment, branch The opening portion 62 of frame 6 can be formed as chamferring mouth structure, that is, the plane of the opening of opening portion 62 inclines relative to the axis of main part 61 Tiltedly setting.In this way, the angular cut formula bracket can accurately adapt to the opening for the branch vessel 2 being obliquely installed, without such as dotted line institute It is charged into as showing in main blood vessel 1 and main blood vessel 1 is caused to block.And the reason of being able to use this angular cut bracket, it is same to benefit It can be realized bracket in the accurate positioning of circumferential direction and axial position in the accurate implant system of bracket that the disclosure provides.To So that the disclosure is more applicable for the stenter to implant of branch vessel.It wherein can also be by tubaeform opening portion as shown in Figure 1 62 plane of the opening is again formed as beveling form, and such embodiment should also be fallen in the protection scope of the disclosure.

As shown in Figure 1, the disclosure provides one kind in order to guarantee for the bracket 6 to be accurately implanted in branch vessel The accurate implant system of branch vessel including releasedly storage support 6 and conveys the stent conveying device of the bracket 6, from master The positioning guide wire 5 that blood vessel 1 extends to the guiding wire 4 of branch vessel 2 and extends along main blood vessel 1, stent conveying device are removable Ground is set in outside guiding wire 4, stent conveying device include releasable be coated on bracket 6 periphery bound film 3, bound film Limit hole 7 is provided on 3, positioning guide wire 5 is slidably disposed through limit hole 7, with can be in axial and circumferential locating support 6.Tool It says to body, on the basis of guiding wire 4, increases positioning guide wire 5, to be realized to bracket 6 by positioning guide wire 5 in axial position With the positioning of circumferential direction, guiding wire 4 and positioning guide wire 5 pass through different paths after introducing main blood vessel 1 and draw, and such as scheme Shown in 1, guiding wire 4 extends to branch vessel 2 after the introducing of main blood vessel 1, and positioning guide wire 5 then extends along main blood vessel 1 always, and And implant system further includes being fixedly installed relative to bracket 6 and for the limit hole 7 that positioning guide wire 5 is slidably disposed through, bound film 3 Since the elastic reaction of itself can be by freeing and be tightly attached on vascular wall after release, and stay in the body or bound film 3 It can be extracted out after the release of bracket 6 external.Wherein it should be noted that the material of bound film 3 is postoperative stays in blood vessel Material, for example, it is in the art commonly by the compound of the preparations such as polytetrafluoroethylene (PTFE), polyurethane, it will not influence bracket 6 normal use.In this way, after bracket 6 enters branch vessel 2 along guiding wire 4 under the action of stent conveying device, bracket 6 Under the action of passing through positioning guide wire 5 of limit hole 7, it can be locked on the opening of branch vessel 2, so as to accurate in the axial direction Locating support 6, equally, positioning guide wire 5 after tension, limit hole 7 relative to the circumferential direction of bracket 6 be equally it is determining, because This can make the circumferential direction of bracket 6 also be accurately positioned, so that bracket 6 be enable accurately to be implanted into branch vessel 2, at this time may be used Bracket 6 is discharged and in a manner of freeing bound film 3, bracket 6 can be enabled precisely to fit in vascular wall in this way, such as Its opening portion, such implant system structure is simple, operates simple and easy.

In accordance with one embodiment of the present disclosure, as shown in Fig. 2, limit hole 7 is arranged on bound film 3, bound film 3 at this time It can be formed as one always with bracket 6, limit hole 7 is in fixed position relative relative to bracket 6, wherein limit hole 7 can be with Position corresponding with carrier openings portion 62 is set on bound film 3, in this way, bound film 3 can be due to branch after bracket 6 discharges The elastic reaction of the expansion of frame 6 is unfolded, and the positioning guide wire 5 for passing through limit hole 7 will limit bound film 3 axial and circumferential fixed Position, to realize the accurate implantation of bracket 6, bound film 3 can stay in the body after the release of bracket 6 at this time.In another embodiment In, can first extract positioning guide wire 5 out, such bound film 3 can drive limit hole 7 during discharging bracket 6 gradually with branch The separation extraction of frame 6 is external.

Wherein, the limit hole 7 being arranged on bound film 3 can for positioning guide wire 5 itself directly through bound film 3 when formed Hole, in the disclosure, limit hole 7 can also be formed by the stop collar being connected on bound film 3, be led with can be used in constraint positioning Silk 5.It should be noted that the stop collar being formed on bound film 3 is small-sized, human body directly can be implanted into bound film 3 In without will affect the function of bracket 6.

In the disclosure, in order to be better achieved to the conveying with horn opening or the bracket 6 of angular cut, the disclosure is adopted Bracket 6 be from swollen bracket, i.e., after discharge bracket 6, can automatically spring open, specifically, in the disclosure, bracket 6 understand with The release of bound film 3 and discharge and flick.Specifically, as shown in Figure 1, stent conveying device includes that can move along guiding wire 4 Core 8 is led, when bound film 3 stays in the body always, core 8 is led and holds out against inside the bracket 6 of tightening state, by freeing bound film 3 Bracket 6 is discharged, is fitted in bound film 3 on vascular wall, leading core 8 can be detached from after the release of bracket 6 with bracket 6, and then take out It is external out.It when bound film 3 extracts external out after the release of bracket 6, leads core 8 and is connect with bound film 3, bound film 3 can be discharged with side While driving bound film 3 to detach with bracket 6 by leading core 8, and then extract out in vitro, while bracket 6 discharges be fitted in vascular wall therewith On.Wherein, leading core 8 is hollow structure to cover outer in guiding wire 4 and can move along guiding wire 4, and leading core 8 can be with backward It extends to external mode to be manipulated, such as the control device of connector outer end.

In the disclosure, as Figure 1-Figure 2, bound film 3 can be sutured by suture 31, make its own tightening, It is tightened therewith with covered stent 6.Suture 31 is Easy opened, by pullling one end of suture 31, i.e., removable.Specifically, Suture 31 on bound film 3 includes that can extend to external extension, in this way, pullling extension when discharging bound film 3 ?.

Stablize when in order to guarantee operation, the outside of extension can be arranged with protection extension and extend to external protection Pipe 311 can accidentally pull suture 31 in this way to avoid in implantation stent procedures, influence to operate.

Above describe the structures for the implant system that the disclosure provides, and the implant system of disclosure offer is described in detail below In the method for implantation that bracket 6 is installed to branch vessel 2.

Firstly, guiding wire 4 is extended to branch vessel 2 from the introducing of main blood vessel 1, core 8 will be led and pass through branch in preparation process Inside frame 6 and the compression of bracket 6 is held out against and lead core 8, so that bracket 6 can be moved synchronously with core 8 is led, then compressed bracket 6 received It is contained in bound film 3, its tightening then is made to bound film 3 itself suture, and form the suture extended in the interface of suture 31, finally positioning guide wire 5 is extended after limit hole 7 along main blood vessel.

Then, the step of bracket 6 is introduced into branch vessel 2 is carried out, firstly, operating control device leads core 8 along guiding to control Seal wire 4 moves forward in the blood vessels, drives bracket 6 and bound film 3 mobile by leading core 8, to guarantee bracket 6 into branch vessel 2 It moves into.When the back-end location of main part 61 reaches the entrance of branch vessel 2, tenses positioning guide wire 5 and block bracket 6 and continue forward Movement, to realize positioning guide wire 5 to the axial limiting of bracket 6 and circumferential limit, that is, enable opening portion 62 and branch vessel 2 opening transitional region alignment, makes bracket 6 realize precise positioning.

The release steps of bracket 6 are described below, pull suture 31 backward by operating control device, bound film 3 can be because For bracket 6 elastic pressure and extend, i.e., freed with bracket 6, bracket 6 can be released therewith at this time, and bound film 3 can in bracket It is fitted on vascular wall under 6 expansion, and stays in the body with bracket 6.Finally, fitting in vascular wall completely to bound film 3 Afterwards, the exit step for carrying out implant system is operated first suture 31 and protection pipe 311 and extracts out backward in vitro, due to bracket 6 Fitted in vascular wall completely, core 8 is led in operation, and extraction is external backward inside bracket 6 after expansion along guiding wire 4, finally takes out Guiding wire 4 and positioning guide wire 5 out, in this way, can be positioned to the bracket 6 during release always by positioning guide wire 5.

It should be noted that in above process, if bound film 3 needs to extract out in vitro after the release of bracket 6, discharging Step needs first to extract positioning guide wire 5 in vitro out, can not be limited bound film 3 during being detached from bracket 6. Mode of texturing in this step is all fallen in the protection scope of the disclosure.Wherein, when bound film 3 needs to extract out in vitro When, bound film 3 can be connect with core 8 is led in preparation process, in this way, bound film can be driven by leading core 8 during release 3 detach bracket 6, in other embodiments, can also individually manipulate bound film 3 by the control device held in vitro and extract out in vitro.

To sum up, the implant system and method for the blood vessel that the disclosure provides can be realized to be opened with horn opening or beveling shape Accurate implantation of the bracket 6 of mouth at the bifurcation ostium of branch vessel, practicability with higher and promotional value.In addition, this The implant system of the open branch vessel provided can be also used for other shapes in addition to for the bracket with horn opening Bracket, such as the implantation of common straight barrel type bracket.In addition, the stent conveying device that the disclosure provides is removed in branch vessel In implantation field, the stenter to implant of other positions blood vessel can be also used for, in the case where not departing from disclosure design, for this The deformation of kind application and field is all fallen in the protection scope of the disclosure.

The preferred embodiment of the disclosure is described in detail in conjunction with attached drawing above, still, the disclosure is not limited to above-mentioned reality The detail in mode is applied, in the range of the technology design of the disclosure, a variety of letters can be carried out to the technical solution of the disclosure Monotropic type, these simple variants belong to the protection scope of the disclosure.

It is further to note that specific technical features described in the above specific embodiments, in not lance In the case where shield, can be combined in any appropriate way, in order to avoid unnecessary repetition, the disclosure to it is various can No further explanation will be given for the combination of energy.

In addition, any combination can also be carried out between a variety of different embodiments of the disclosure, as long as it is without prejudice to originally Disclosed thought equally should be considered as disclosure disclosure of that.

Claims (10)

1. a kind of accurate implant system of the bracket of branch vessel, the branch vessel include interconnected main blood vessel (1) and with The branch vessel (2) of main blood vessel (1) connection, which is characterized in that the accurate implant system of bracket includes releasedly storing Bracket (6) simultaneously conveys the stent conveying device of the bracket (6), extends to the guiding of the branch vessel (2) from the main blood vessel (1) Seal wire (4) and the positioning guide wire (5) extended along the main blood vessel (1), the stent conveying device are movably set in institute State guiding wire (4) outside, the stent conveying device include releasable be coated on the bracket (6) periphery bound film (3), it being provided with limit hole (7) on the bound film (3), the positioning guide wire (5) is slidably disposed through the limit hole (7), The bracket (6) can be positioned in axial and circumferential.

2. the accurate implant system of bracket according to claim 1, which is characterized in that the limit hole (7) is by being connected to The stop collar stated on bound film (3) is formed.

3. the accurate implant system of bracket according to claim 1, which is characterized in that the bracket (6) has main part (61) and positioned at the opening portion (62) of main part (61) rear end, the main part (61) is formed as straight tube structure, the opening Portion (62) is formed as flared structure.

4. the accurate implant system of bracket according to claim 1, which is characterized in that the bracket (6) has main part (61) and positioned at the opening portion (62) of main part (61) rear end, the main part (61) is formed as straight tube structure, the opening The plane of the opening in portion (62) is obliquely installed relative to the axis of the main part (61).

5. the accurate implant system of bracket according to claim 3 or 4, which is characterized in that the stent conveying device includes It can be led core (8) along what the guiding wire (4) were moved, the core (8) of leading is held out against in the bracket (6) inside of tightening state.

6. the accurate implant system of bracket according to claim 5, which is characterized in that the limit hole (7) is formed in described The position of the corresponding opening portion (62) on bound film (3).

7. the accurate implant system of bracket according to claim 3 or 4, which is characterized in that the stent conveying device includes It can be led core (8) along what the guiding wire (4) were moved, the core (8) of leading is connect with the bound film (3).

8. the accurate implant system of bracket according to claim 1, which is characterized in that the bound film (3) passes through suture (31) it sutures, to coat the bracket (6).

9. the accurate implant system of bracket according to claim 8, which is characterized in that the suture (31) includes that can prolong Extend to external extension.

10. the accurate implant system of bracket according to claim 9, which is characterized in that the outer cover of the extension is equipped with Extend to external protection pipe (311).