CN209091737U - The endovascular stent for abdominal aorta of backward branch - Google Patents

Abstract

The utility model relates to medical instruments fields, disclose a kind of endovascular stent for abdominal aorta of backward branch, including main body (1) and vessel branch (2), the vessel branch (2) is arranged on the main body (1), and the end port of vessel branch (2) is towards heart；The main body (1) includes the main body overlay film (12) of main body bare bracket (11) and setting on the inside of main body bare bracket (11), and the vessel branch (2) includes the vessel branch overlay film (22) of vessel branch bare bracket (21) and setting on the inside of vessel branch bare bracket (21).The utility model can not only make seal wire enter the lateral branching of abdominal aorta bracket from femoral artery approach, moreover, shortening operating time convenient for reducing point of puncture, reduce the duration of operation difficulty, bleeding and doctor and the exposure of patient's ray.

Description

The endovascular stent for abdominal aorta of backward branch

Technical field

The utility model relates to medical instruments fields, more particularly to a kind of endovascular stent for abdominal aorta of backward branch.

Background technique

Thoracoabdominal aortic aneurysm (Thoracoabdominal aortic aneurysm, AAA) refers to aorta Ectasia, together When involve chest section and abdomen section, or involve abdominal cavity important blood vessels, be one of critical illness of life-threatening.Foreign Epidemic disease statistical form Its bright morbidity is not rare, is more common in elderly men.With the aging of China human mortality and westernization, the chest and abdomen master of life style Aneurysm also becomes important one of the difficult severe of vascular surgery.Aortic aneurysm rupture is a kind of extremely dangerous surgery urgency abdomen Disease, the death rate are 50%~80%.So the Clinical intervention before thoracoabdominal aortic aneurysm rupture has particularly important meaning.

Since the 1990s, it is minimally invasive intervention an actor's rendering of an operatic tune in iatrotechnics emergence and development, substituted surgical operation at For the operation first choice for treating aortic aneurysm.By distal aorta such as Human Femoral Artery notch, the defeated of overlay film frame will be mounted with It send system to push to diseased region, discharges overlay film frame and fixation, completely cut off diseased aneurysmal, transmyocardial passageway is rebuild, to reduce Artery knurl pressure, reaches therapeutic purposes.

Currently used for treat involve abdominal cavity blood vessel complicated aortic aneurysm film-coated vascular branch stent be all made of caudal to Branch.In operating process, since branch direction limits, seal wire enters abdominal aorta and covers from the femoral artery approach reflexed that " cannot turn round " The tail lateral branching of membrane support.It needs after femoral artery puncture places rack body, blood is placed from top by arteria brachialis approach Pipe branch stent extends branch, and the blood flow for completing intended branch blood vessel is rebuild.Increase point of puncture, operating difficulty, and operation The duration of time, bleeding and doctor and the exposure of patient's ray.

Utility model content

The utility model provides a kind of endovascular stent for abdominal aorta of backward branch, the abdominal aorta overlay film of the backward branch Bracket can not only make seal wire enter the lateral branching of abdominal aorta bracket from femoral artery approach, moreover, be convenient for reducing point of puncture, Shorten operating time, reduces the duration of operation difficulty, bleeding and doctor and the exposure of patient's ray.

To achieve the goals above, the utility model provides a kind of endovascular stent for abdominal aorta of backward branch, including master Body and vessel branch, the vessel branch are arranged in the upper end of the main body, and the end port of branch is towards heart；The master Body includes main body bare bracket and the main body overlay film that is arranged on the inside of main body bare bracket, vessel branch include vessel branch bare bracket and Vessel branch overlay film on the inside of vessel branch bare bracket is set.

Preferably, the vessel branch quantity is four, respectively coeliac trunk vessel branch, superior mesenteric artery blood vessel point Branch and two arteria renalis vessel branches.

Preferably, the perimeter of the main body is 1.1-1.2 times of artery cavity perimeter.

Preferably, the proximal end of the main body and the end of vessel branch are respectively equipped with 1-2 developing mark.

Preferably, the proximal end of the main body is equipped with first support ring, and the end of the vessel branch is equipped with second support ring.

Preferably, the main body bare bracket, vessel branch bare bracket, first support ring and second support ring are by medical Closed wavy annular object made of memory wire.

Through the above technical solutions, the end port of vessel branch makes preset seal wire be easy to enter from femoral artery towards heart Road solves the problems, such as that existing overlay film frame is unable to reflexed and enters vessel branch, is also increased without arteria brachialis approach and completes mesh The blood flow reconstruction operations of branch vessel are marked, point of puncture is reduced, reduces the time for re-starting implant surgery using transportation system, Operation difficulty is reduced, moreover, reducing the risk of ray exposure of the patient in art；Moreover, the first of the proximal end of main body The second support ring of the end of support ring and vessel branch can be avoided proximal, side leakage occurs in the deformation of vessel branch end, Influence therapeutic effect.

Other advantages of related the utility model and the technical effect of preferred embodiment, by specific implementation below It is further illustrated in mode.

Detailed description of the invention

Fig. 1 is the schematic diagram of the utility model one embodiment；

Fig. 2 is the schematic diagram of main body overlay film in the utility model；

Fig. 3 is the schematic diagram of the utility model medium vessels branch overlay film.

Description of symbols

1 main body

11 main body bare bracket, 12 main body overlay film

13 first support rings

2 vessel branches

21 vessel branch bare bracket, 22 vessel branch overlay film

23 second support rings

3 developing marks

Specific embodiment

Specific embodiment of the present utility model is described in detail with reference to the accompanying drawing.It should be understood that herein Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.

In the description of the present invention, it should be understood that term " on ", "lower", "left", "right", "front", "rear", The orientation or positional relationship of the instructions such as "inner", "outside", "top", "bottom" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

In addition, term " first ", " second " are only used for the purpose of description, it is not understood to indicate or imply relatively important Property or implicitly indicate the quantity of indicated technical characteristic and therefore define " first ", the feature of " second " can be expressed or hidden It include one or more features containing ground.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or integrally connected； It can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be the connection or two members inside two elements The interaction relationship of part.For the ordinary skill in the art, it can understand that above-mentioned term exists as the case may be Concrete meaning in the utility model.

In overlay film frame field, after overlay film frame implantable intravascular, definition blood flow flows to this from the proximal end of overlay film frame and covers The end of membrane support.

As shown in Figure 1, the endovascular stent for abdominal aorta of the backward branch of the utility model, including main body 1 and vessel branch 2, vessel branch 2 is arranged in the upper end of main body 1, and the end port of vessel branch 2 is towards heart；Main body 1 includes the naked branch of main body Frame 11 and the main body overlay film 12 that 11 inside of main body bare bracket is arranged in, vessel branch 2 include vessel branch bare bracket 21 and setting Vessel branch overlay film 22 in 21 inside of vessel branch bare bracket.

Specifically, the setting of vessel branch 2 on the body 1, the end port of vessel branch 2 towards heart, headed by laterally divide Branch, it is opposite with the port of conventional vascular branch stent direction；Main body 1 includes main body bare bracket 11 and main body overlay film 12, and main body is covered The setting of film 12 includes vessel branch bare bracket 21 and vessel branch overlay film 22, blood vessel in 11 inside of main body bare bracket, vessel branch 2 The setting of branch's overlay film 22 is in 21 inside of vessel branch bare bracket；Main body bare bracket 11 and main body overlay film 12, vessel branch bare bracket 21 and vessel branch overlay film 22 connection type can using suture, paste or pressing etc. modes；The perimeter of main body 1 is lumen of artery 1.1-1.2 times of perimeter, enhance the endovascular stent for abdominal aorta of the backward branch of the utility model after the implantation with vascular wall Compactness；For the ease of the operation of stenter to implant operation, the proximal end of main body 1 and the end of vessel branch 2 are respectively equipped with 1-2 Developing mark 3 observes entire implantation process convenient for surgical doctor, assists the progress of operation；Main body overlay film 12 and vessel branch cover Film 22 is made of expanded PTFE.

Further, vessel branch 2 can also be predisposed to four, be located at veutro (coeliac trunk, superior mesenteric artery) With two sides (arteria renalis), respectively coeliac trunk vessel branch, superior mesenteric artery vessel branch and two arteria renalis vessel branches, For involving the thoracoabdominal aortic aneurysm of above-mentioned blood vessel, pass through 2 end continued access overlay film frame (viabahn) of vessel branch, blood vessel point 2 design of branch meets thoracoabdominal aortic aneurysm vascular anatomy form as much as possible；

It is understood that main body overlay film 12 can be integrally formed, reference Fig. 2 and Fig. 3 with vessel branch overlay film 22, Main body overlay film 12 can also be connect with vessel branch overlay film 22 by way of suture, 12 side wall of main body overlay film offers out Hole, the profile and border line of aperture is together with the proximal staple of vessel branch overlay film 22；

It is understood that main body overlay film 12 can also be coated on the outside of main body bare bracket 11, vessel branch overlay film 22 The outside of vessel branch bare bracket 21 can also be coated on；

Further, the proximal end of main body 1 is equipped with first support ring 13, and the end of vessel branch 2 is equipped with second support ring 23； Main body bare bracket 11, vessel branch bare bracket 21, first support ring 13 and second support ring 23 are by medical memory wire Manufactured closed wavy annular object, medical memory wire can be nitinol alloy wire or titanium silk；First support ring 13 Waveform shape be less than main body bare bracket 11 waveform shape, first support ring 13 by be in mirror symmetry two closed waveforms Ring is constituted, and the waveform shape of second support ring 23 is less than the waveform shape of vessel branch bare bracket 21, second support ring 23 By being constituted in two closed wavy annular objects of mirror symmetry；Avoid the proximal end of main body 1 and/or blood vessel when being unfolded after being implanted into The end expansion of branch 2 not exclusively leads to interior leakage.

Common iliac artery overlay film frame can be connected with the distal end of main body 1, for treating iliac artery aneurysm；Moreover, because common iliac artery Overlay film frame is divided into two, and is in herringbone, when treating abdominal aneurvsm, when the endovascular stent for abdominal aorta of backward branch is planted After entering, common iliac artery overlay film frame herringbone bifurcated can agree with common iliac artery, and the endovascular stent for abdominal aorta of backward branch is made to exist The case where position in abdominal aorta is firm, avoids the occurrence of the endovascular stent for abdominal aorta displacement of backward branch.

Referring to Fig. 1, Fig. 2 and Fig. 3, the course of work of the utility model is described.

The endovascular stent for abdominal aorta of backward branch provided by the embodiment of the utility model, it is preoperative to patient's thoracoabdominal aorta It carries out CTA (atraumatic Angiography) to check and carry out three-dimensional reconstruction, to understand aorta overall condition, accurate evaluation Lesion locations, form and size select the abdominal aorta overlay film branch of suitable backward branch according to patient vessel's radiography situation Frame；Before the endovascular stent for abdominal aorta of implantation backward branch, preset seal wire is drawn from vessel branch 2；Then, surgical doctor Transportation system can be used, main body 1 is pushed to diseased region, reach predetermined position, preset seal wire is placed in the blood vessel in main body 1 In branch 2, main body 1 and vessel branch 2 are discharged；Corresponding blood vessel is selected by preset seal wire again, end is placed in catheter guide wire cooperation It holds overlay film frame (viabahn), completes the implantation process of the endovascular stent for abdominal aorta of the backward branch of the utility model, then will Seal wire takes out, and carries out postoperative medical treatment and completes implant surgery；The end port of vessel branch 2 makes preset seal wire towards heart It is easy to from femoral artery approach, and is increased without the blood flow reconstruction operations that arteria brachialis approach completes target blood branch, reducing makes The time of implant surgery is re-started with transportation system, reduces operation difficulty, when also reducing ray exposure of the patient in art Between.

Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model, It is combined in any suitable manner including each particular technique feature.In order to avoid unnecessary repetition, the utility model To various combinations of possible ways, no further explanation will be given.But these simple variants and combination equally should be considered as the utility model institute Disclosure belongs to the protection scope of the utility model.

Claims (6)

1. a kind of endovascular stent for abdominal aorta of backward branch, which is characterized in that described including main body (1) and vessel branch (2) Vessel branch (2) setting is in the upper end of the main body (1), and the end port of vessel branch (2) is towards heart；

The main body (1) includes the main body overlay film (12) of main body bare bracket (11) and setting on the inside of main body bare bracket (11), institute Stating vessel branch (2) includes that vessel branch bare bracket (21) and the vessel branch being arranged on the inside of vessel branch bare bracket (21) cover Film (22).

2. the endovascular stent for abdominal aorta of backward branch according to claim 1, which is characterized in that the vessel branch (2) quantity is four, respectively coeliac trunk vessel branch, superior mesenteric artery vessel branch and two arteria renalis vessel branches.

3. the endovascular stent for abdominal aorta of backward branch according to claim 1, which is characterized in that the main body (1) Perimeter is 1.1-1.2 times of artery cavity perimeter.

4. the endovascular stent for abdominal aorta of backward branch according to claim 1, which is characterized in that the main body (1) Proximal end and the end of vessel branch (2) are respectively equipped with 1-2 developing mark (3).

5. the endovascular stent for abdominal aorta of backward branch according to any one of claim 1 to 4, which is characterized in that institute The proximal end for stating main body (1) is equipped with first support ring (13), and the end of the vessel branch (2) is equipped with second support ring (23).

6. the endovascular stent for abdominal aorta of backward branch according to claim 5, which is characterized in that the main body bare bracket (11), vessel branch bare bracket (21), first support ring (13) and second support ring (23) are by medical memory wire system At closed wavy annular object.