CN107485474A - A kind of intravascular stent system and its method for implantation with guide function - Google Patents
A kind of intravascular stent system and its method for implantation with guide function Download PDFInfo
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- CN107485474A CN107485474A CN201710863941.1A CN201710863941A CN107485474A CN 107485474 A CN107485474 A CN 107485474A CN 201710863941 A CN201710863941 A CN 201710863941A CN 107485474 A CN107485474 A CN 107485474A
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- Prior art keywords
- guide head
- guide
- bias spring
- spring
- intravascular stent
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
- A61F2/958—Inflatable balloons for placing stents or stent-grafts
- A61F2002/9583—Means for holding the stent on the balloon, e.g. using protrusions, adhesives or an outer sleeve
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The invention provides a kind of intravascular stent system with guide function, including guide head, connector and rack body；Guide head includes skeleton spring, bias spring and accommodating chamber, and bias spring is SMA marmems, and accommodating chamber is located at guide head rear end；Connector is coaxially connected at guide head rear, including seal wire, air bag；Rack body is coaxially set on air bag；The invention also discloses a kind of application method of above-mentioned intravascular stent system, including implantable intravascular, guide head are bent to the bias spring of energization side, arrival lesions position air bag struts, withdraws the step of guide head.It is an advantage of the current invention that seal wire or the intravascular stent with guide head of catheter proximal end can be placed in, can complete to be oriented to control in rack body front end；The intravascular stent has guide effect, substantially reduces vascular surgery difficulty, and operating time substantially shortens, and can improve the accuracy and security of surgical catheters intubation, and and can mitigates the damage that surgical procedure is brought to human vas.
Description
Technical field
The present invention relates to cardiovascular technical field, more particularly to the intravascular stent system with guide function and its implantation side
Method.
Background technology
Angiocardiopathy turns into the first killer for threatening the health of our people, and China dies from cardiovascular disease every year
Patient Yue Wan people.Coronary atherosclerotic heart disease abbreviation coronary heart disease, it is composition mostly important in cardiovascular disease
Part, coronary heart disease refer to the artery of coronary artery supply heart self-blood occur serious atherosis make coronary artery hemadostewnosis or
Person's occlusion, cause a kind of heart disease of myocardial ischemia or infraction.
Acute or be on the verge of occlusion caused by implantation support can be treated by balloon expandable, support PCI can drop
Low restenosis rate, improve the long-term prognosis of patient, implantation support easily operates and can reduce the operating time, for complicated disease
Becoming, implantation support can obtain satisfied result, therefore have developed rapidly, and turn into the Main Means of myocardial blood transport reconstruction at present,
As the angioplastic method of a standard, have broad application prospects.
Stenter to implant operation is to reach internal diseased region farther out by vessel lumen by means of interposing catheter, then right
Block part erection bracket.Currently, for the catheterization procedure of conduit, more universal method is in X-ray or other gray level images
Guiding under, be inserted directly into by hand by the operating personnel being skilled in technique.It is vascular bending in human body, irregular, and many portions
There is branch in the blood vessel of position, these all cause the control of intubation to become extremely difficult.Enter simply by virtue of the experience of operating personnel
Row intubation brings very big contingency for operation, and mistake and the operation repeated also further cause to damage to human vas.
Therefore, how for present in above-mentioned prior art the shortcomings that, carries out research and development improvement, is actually exerted needed for relevant industry
In view of this target of power research and development, designer of the present invention, are the idea of think of and creation, designed then with experience for many years, pass through
In many ways inquire into and study sampling test, and repeatedly amendment improvement, it is to release the present invention.
The content of the invention
(1) technical problems to be solved
In view of above-mentioned technical problem, the invention provides a kind of with the intravascular stent system of guide function and its implantation side
Method.
(2) technical scheme
The invention provides a kind of intravascular stent system with guide function, including：
Guide head, including：
Skeleton spring, is disposed to extend along vertical pivot；
Bias spring, it is SMA marmems, there are several, and head and the tail intersecting ring is enclosed around the skeleton spring one,
Its bearing of trend intersects with skeleton spring compartment；
Accommodating chamber, positioned at guide head rear end, and with the opening towards the end；
Connector, it is coaxially connected at guide head rear, including：
Seal wire, it is fixedly connected in accommodating chamber；
Air bag, coaxially it is set on seal wire, front end is goed deep into accommodating chamber；
Rack body, coaxially it is set on air bag, positioned at guide head rear.
In some embodiments of the invention, the guide head has the more piece being sequentially connected, by fixed cover between often saving
The connection ring being located on skeleton spring separates, and the circle of connection one bias spring between two connection rings, forms a section guide section.
In some embodiments of the invention, the frontal air bag segment thickness goed deep into the accommodating chamber is less than rear end air bag
Part.
In some embodiments of the invention, the guide head has two sections.
In some embodiments of the invention, the bias spring arrangement often saved on guide head is identical.
In some embodiments of the invention, each bigoted spring on the guide head is mutually in parallel.
In some embodiments of the invention, the both ends of the bias spring connect with the connection ring of both sides respectively, adjacent
Bias spring is connected on the same tie point in connection ring.
In some embodiments of the invention, it is connected with wire on each tie point.
Present invention also offers a kind of method for implantation of above-mentioned intravascular stent system, step are as follows：
(1) stenter to implant is intravascular；
(2) guide head is actively bent to the bias spring of energization side, through the blood vessel of bending；
(3) lesions position, airbag aeration are reached, gas is first filled with positioned at the frontal air bag part of accommodating chamber, support sheet
Body end portion is lifted off guide head；Rear end cell parts are slowly inflated, and prop up rack body；
(4) rack body is softened, and is supported on lesions position；
(5) air bag deflation, guide head is withdrawn.
In some embodiments of the invention, the step (2) is specific as follows：
(1) bending direction is judged；
(2) if the direction is in the middle part of a pair of bias springs, a pair of biasing bullets on the position on first segment guide head
Three tie points access circuit of spring, this is curved to middle side part where bias spring to this to the heated shortening of bias spring, guide head
It is bent；
(3) if the direction is located at a bias spring position, the biasing on the position on first segment guide head
Two tie points access circuit of spring, the bias spring is heated to be shortened, and guide head is to lateral bend where the bias spring；
Bias spring on (4) second section guide heads is identical with first segment guide head action.
(3) beneficial effect
It can be seen from the above technical proposal that the present invention at least has the advantages that one of them：
(1) present invention design is a kind of can be placed in seal wire or the intravascular stent with guide head of catheter proximal end, can
Complete to be oriented to control in the front end of rack body；The intravascular stent has guide effect, substantially reduces vascular surgery difficulty, hand
The art time substantially shortens, and can improve the accuracy and security of surgical catheters intubation, and and can mitigates surgical procedure to human body blood
The damage that pipe is brought；
(2) specifically for intravascular stent be implanted into design set of system, reduce intravascular stent implantation process in patient with
The additional injury come；
(3) can be end to end with the bias spring of heated bending, it is diagonally disposed in the side of skeleton spring, a pair of biasing bullets
Spring simultaneous retractable, it can make guide head that there is a bending direction, single bias spring stretches, and can have guide head more
Direction, in the case of limited joint and as far as possible few wire, possess more bending direction, control is more freely；
(4) intravascular stent body follows the fore-end at guide head rear, being located at accommodating chamber by air bag before strutting
Inflation is pushed open first, prevents guide head interference support from strutting；
(5) the often section on guide head is bent successively, reaches the smooth excessive purpose at vascular bending；
(6) two section guide head designs, meet the effect being oriented to for support, simple in construction, wiring is simple, and structure is small.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of the present invention.
Fig. 2 is the flexible schematic diagram of bias spring after the guide head expansion of the embodiment of the present invention.
Fig. 3 is the equivalent circuit diagram of a certain section guide head of the embodiment of the present invention.
Fig. 4 uses schematic diagram for the embodiment of the present invention.
【Main element symbol description of the present invention】
1st, guide head；11st, connection ring；111st, tie point；
12nd, bias spring；121st, wire；13rd, skeleton spring；
14th, accommodating chamber；2nd, air bag；21st, frontal air bag；
22nd, rear end air bag；3rd, rack body；4th, seal wire；
5th, blood vessel；A, first segment guide head；B, the second section guide head.
Embodiment
The invention provides the intravascular stent system with guide function and its method for implantation.Solve intravascular stent be implanted into
When operating difficulties the problem of, and the system has more bending direction, can meet blood substantially in the case of less volume
The demand that pipe holder is walked in the complicated blood vessel network of inside of human body, greatly reduces the damage to blood vessel, will be to patient
Injury be preferably minimized.
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
In one exemplary embodiment of the present invention, there is provided a kind of intravascular stent system with guide function.Such as
Shown in Fig. 1, Fig. 4, the present invention includes guide head 1, connector and rack body 3.
Each part of the present embodiment is described in detail individually below.
Guide head 1, including skeleton spring 13, bias spring 12 and accommodating chamber 14.Skeleton spring 13, extend cloth along vertical pivot
Put, provide support for guide head 1 and flex back to elastic force；The material of bias spring 12 is SMA marmems, has several,
And head and the tail intersecting ring is enclosed around skeleton spring 13 1, i.e., it is in splayed between adjacent bias spring 12, the extension of bias spring 12
Direction is with skeleton spring 13 in space intersection；Bias spring 12 can produce shortening phenomenon after heated, the bias spring after shortening
12 can drive skeleton spring 13 to bend, and the direction bent as needed, can be a biasing so as to have the function that guiding
Spring 12 shortens or two even more bias springs 12 shorten, and guiding guide head 1 is bent to predetermined direction.Accommodate
Chamber 14, positioned at the rear end of guide head 1, and with the opening for connector installation towards the end.
Connector, it is coaxially connected at the rear of guide head 1, including seal wire 4 and air bag 2.Seal wire 4 is fixedly connected on accommodating chamber 14
Interior, air bag 2 is coaxially set on seal wire 4, and front end is goed deep into accommodating chamber 14, the frontal air bag part 21 goed deep into accommodating chamber 14
Thickness is less than the thickness of rear end cell parts 22；Rack body 3 is coaxially set on rear end cell parts 22, after guide head 1
Side.When rack body 3 reaches lesions position, air bag 2 is inflated, because gas can be first filled with the small frontal air bag part of thickness
21, after front end cell parts 21 inflate turgor accommodating chamber 14, the also gradual turgor of rear end cell parts 22, strut and be arranged thereon
Rack body 3, the blood vessel 5 of lesions position is supported, the distending first of frontal air bag part 21, is formed and stopped, rack body 3 is subsequent
Accommodating chamber 14 will not be strayed into during strutting, forms interference.
Guide head 1 has two sections being sequentially connected, and being worked in coordination between two sections can realize that crooked radian size adjusts.The
Separated between one section guide head a and the second section guide head b by the fixed connection ring 11 being set on skeleton spring 13, two connections
The circle of connection one bias spring 12 between ring 11, form a section guide head.Often saving in guide head has six roots of sensation bias spring 12, shared
Space is smaller, is advantageous to guide head 1 and is miniaturized, and the arrangement of bias spring 12 on two section guide heads 1 is identical, two section guide heads
Unification can be accomplished between 1 on bending direction.
As shown in Fig. 2 the heating of each bias spring 12, using the method being powered, the both ends of bias spring 12 are respectively and both sides
Connection ring 11 connect, adjacent offset spring 12 is connected on the same tie point 111 in connection ring 11, on each tie point 111
It is connected with wire 121.As shown in figure 3, each bigoted spring 12 on guide head 1 is mutually in parallel, it is possible to achieve maximum current stream
Cross, increase caloric value.Such bias spring 12 and wire 121 arrangement, it is possible to achieve the energization of single bias spring 12,
Adjacent multiple bias springs 12 can also be realized while be powered there can be the guiding than general 12 parallel distribution of bias spring
The more bending directions of device, especially in the case where single bias spring 12 is powered and adjacent two bias spring 12 is powered,
At least there is 2n bending direction.
The method for implantation of intravascular stent system of the present invention, step are as follows：
(1) in the mounting system implantable intravascular 5；
(2) guide head 1 is actively bent to the bias spring 12 of energization side, through the blood vessel 5 of bending；
(3) lesions position is reached, air bag 2 is inflated, and gas is first filled with positioned at the frontal air bag part 21 of accommodating chamber, support
The end of body 3 is lifted off guide head 1；Rear end cell parts 22 are slowly inflated, and prop up rack body 3；
(4) rack body 3 is softened, and is supported on lesions position；
(5) air bag 2 is deflated, and withdraws guide head 1.
Step (2) is specific as follows：
(1) bending direction is judged；
(2) if the direction is between a pair of bias springs 12, a pair of biasings on the position on first segment guide head a
Three tie points 111 access circuit of spring 12, this is to the heated shortening of bias spring 12, and guide head 1 is to this to bias spring 12
Place middle side part bending；
(3) it is inclined on the position on first segment guide head a if the direction is located at a position of bias spring 12
Two tie points 111 access circuit of spring 12 is put, the bias spring 12 is heated to be shortened, and guide head 1 is to the institute of bias spring 12
In lateral bend；
Bias spring 12 on (4) second section guide head b is identical with first segment guide head a actions.
So far, the present embodiment is described in detail combined accompanying drawing.According to above description, those skilled in the art
There should be clear understanding to the present invention.
It should be noted that in accompanying drawing or specification text, the implementation that does not illustrate or describe is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, the above-mentioned definition to each element and method is simultaneously
It is not limited only to various concrete structures, shape or the mode mentioned in embodiment.
It should also be noted that, the demonstration of the parameter comprising particular value can be provided herein, but these parameters are without definite etc.
In corresponding value, but analog value can be similar in acceptable error margin or design constraint.The side mentioned in embodiment
To term, such as " on ", " under ", "front", "rear", "left", "right" etc., only it is the direction of refer to the attached drawing, is not used for limiting this
The protection domain of invention.In addition, unless specifically described or the step of must sequentially occur, the order of above-mentioned steps, which has no, to be limited to
It is listed above, and can change or rearrange according to required design.And above-described embodiment can be based on design and reliability
Consider, the collocation that is mixed with each other uses using or with other embodiment mix and match, i.e., the technical characteristic in different embodiments can be with
Freely form more embodiments.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
- A kind of 1. intravascular stent system with guide function, it is characterised in that including：Guide head, including：Skeleton spring, is disposed to extend along vertical pivot；Bias spring, it is SMA marmems, there are several, and head and the tail intersecting ring is enclosed around the skeleton spring one, it prolongs Direction is stretched with skeleton spring compartment to intersect；Accommodating chamber, positioned at guide head rear end, and with the opening towards the end；Connector, it is coaxially connected at guide head rear, including：Seal wire, it is fixedly connected in accommodating chamber；Air bag, coaxially it is set on seal wire, front end is goed deep into accommodating chamber；Rack body, coaxially it is set on air bag, positioned at guide head rear.
- 2. the intravascular stent system according to claim 1 with guide function, it is characterised in that the guide head has The more piece being sequentially connected, separated between often saving by the fixed connection ring being set on skeleton spring, between two connection rings The circle bias spring of connection one, form a section guide section.
- 3. the intravascular stent system according to claim 2 with guide function, it is characterised in that go deep into the accommodating chamber Interior frontal air bag segment thickness is less than rear end cell parts.
- 4. the intravascular stent system according to claim 3 with guide function, it is characterised in that the guide head has Two sections.
- 5. the intravascular stent system according to claim 4 with guide function, it is characterised in that often save on guide head Bias spring arrangement is identical.
- 6. the intravascular stent system according to claim 5 with guide function, it is characterised in that on the guide head Each bigoted spring is mutually in parallel.
- 7. the intravascular stent system according to claim 6 with guide function, it is characterised in that the bias spring Both ends are connected with the connection ring of both sides respectively, and adjacent offset spring is connected on the same tie point in connection ring.
- 8. the intravascular stent system according to claim 7 with guide function, it is characterised in that on each tie point It is connected with wire.
- 9. a kind of method for implantation of the intravascular stent system with guide function described in any one of claim 1-8, its feature It is, step is as follows：(1) stenter to implant is intravascular；(2) guide head is actively bent to the bias spring of energization side, through the blood vessel of bending；(3) lesions position, airbag aeration are reached, gas is first filled with positioned at the frontal air bag part of accommodating chamber, rack body end Portion is lifted off guide head；Rear end cell parts are slowly inflated, and prop up rack body；(4) rack body is softened, and is supported on lesions position；(5) air bag deflation, guide head is withdrawn.
- 10. method for implantation according to claim 9, it is characterised in that the step (2) is specific as follows：(1) bending direction is judged；(2) if the direction is in the middle part of a pair of bias springs, a pair of bias springs on the position on first segment guide head Three tie points access circuit, and this bends to the heated shortening of bias spring, guide head to this to middle side part where bias spring；(3) if the direction is located at a bias spring position, the bias spring on the position on first segment guide head Two tie points access circuit, the bias spring is heated to be shortened, and guide head is to lateral bend where the bias spring；Bias spring on (4) second section guide heads is identical with first segment guide head action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863941.1A CN107485474A (en) | 2017-09-21 | 2017-09-21 | A kind of intravascular stent system and its method for implantation with guide function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710863941.1A CN107485474A (en) | 2017-09-21 | 2017-09-21 | A kind of intravascular stent system and its method for implantation with guide function |
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| CN107485474A true CN107485474A (en) | 2017-12-19 |
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| CN201710863941.1A Pending CN107485474A (en) | 2017-09-21 | 2017-09-21 | A kind of intravascular stent system and its method for implantation with guide function |
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| CN108031006A (en) * | 2018-01-24 | 2018-05-15 | 张海军 | A kind of wireless pacemaker delivery conduit device turned to memory alloy wire control and production method |
| CN108899809A (en) * | 2018-08-14 | 2018-11-27 | 淮北创之社信息科技有限公司 | A kind of injection molding tube bending point threading apparatus |
| CN110123392A (en) * | 2019-03-26 | 2019-08-16 | 江苏省人民医院（南京医科大学第一附属医院） | Accurate location aortic valve passes through device |
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| US20070149951A1 (en) * | 2005-12-27 | 2007-06-28 | Mina Wu | Variable stiffness guidewire |
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| CN108031006A (en) * | 2018-01-24 | 2018-05-15 | 张海军 | A kind of wireless pacemaker delivery conduit device turned to memory alloy wire control and production method |
| CN108899809A (en) * | 2018-08-14 | 2018-11-27 | 淮北创之社信息科技有限公司 | A kind of injection molding tube bending point threading apparatus |
| CN110123392A (en) * | 2019-03-26 | 2019-08-16 | 江苏省人民医院（南京医科大学第一附属医院） | Accurate location aortic valve passes through device |
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Application publication date: 20171219 |
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