CN204121205U - The self-expanding type blood vessel dilator of unique texture - Google Patents
The self-expanding type blood vessel dilator of unique texture Download PDFInfo
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- CN204121205U CN204121205U CN201420632883.3U CN201420632883U CN204121205U CN 204121205 U CN204121205 U CN 204121205U CN 201420632883 U CN201420632883 U CN 201420632883U CN 204121205 U CN204121205 U CN 204121205U
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Abstract
This utility model relates to the intravascular stent of a kind of Wicresoft interventional medical device, is specifically related to a kind of self-expanding type blood vessel dilator of unique texture.Its entirety is a wavy annular supporting construction, it is characterized in that: it is made up of three parts, and be respectively head, waist and afterbody, described head is identical with tail structure, and three described parts are all be made up of wavy annular supporting construction unit; Each described wavy annular supporting construction unit forms arranged in parallel by several carrier units joint, and connected and composed by connecting rod; The gap of the carrier unit joint of head and afterbody is greater than the carrier unit internode gap of waist; The setback density of the carrier unit joint of waist is greater than head and afterbody simultaneously.
Description
Technical field
This utility model relates to the intravascular stent of a kind of Wicresoft interventional medical device, is specifically related to a kind of self-expanding type blood vessel dilator of unique texture.
Background technology
Self-expanding type blood vessel dilator is a kind of tiny netted cylinder type medical apparatus and instruments, is mainly used in the pathological changes such as treatment angiostenosis, also can be used in all kinds of tract narrow.Self-expanding type blood vessel dilator is pressed to be held in induction system usually in advance, send into narrow vascular lesion district by induction system, then when support is pushed out induction system, support can self expandable to the diameter of normal blood vessels, strut narrow blood vessel, and keep unobstructed blood vessel state.
The technical specification of self-expanding type blood vessel dilator has: the many aspects such as radial support intensity, metal coverage rate, compliance, adherent property, axial cripetura rate.During operation, doctor selects suitable stent length according to the length of angiostenosis part, and the general principle selected is: narrow blood vessel length+(10mm-20mm).The existing structure being applied to clinical self-expanding type blood vessel dilator has multiple, but ubiquity a shortcoming: support substantially all adopts even wave mode supporting construction Unit Design, and namely the structure of the wavy annular supporting construction unit of support is identical with connected mode.The radial support intensity of support under whole length is all substantially identical, support, while keeping stronger radial support intensity for stenotic lesion vascular site, also has stronger supporting role for the non-narrow healthy blood vessel (10mm-20mm) in two ends.Such support also creates stronger stimulation for non-narrow healthy blood vessel, can produce bad therapeutic effect.
summary of the invention
This utility model technical issues that need to address are the self-expanding type blood vessel dilator providing a kind of unique texture, to overcome above-mentioned existing support Problems existing.
For completing the goal of the invention of above-mentioned utility model, this patent is achieved in that a kind of self-expanding type blood vessel dilator of unique texture, its entirety is a wavy annular supporting construction, it is characterized in that: it is made up of three parts, be respectively head, waist and afterbody, described head is identical with tail structure, and three described parts are all be made up of wavy annular supporting construction unit; Each described wavy annular supporting construction unit forms arranged in parallel by several carrier units joint, and connected and composed by connecting rod; The gap of the carrier unit joint of head and afterbody is greater than the carrier unit internode gap of waist; The setback density of the carrier unit joint of waist is greater than head and afterbody simultaneously.
The both ends of support of the present invention are not identical with middle wavy annular supporting construction element length, and the support member number of support single-unit, bar are wide not identical, and Distance geometry connecting rod number between wavy annular supporting construction unit is not identical.
Be improved further technique scheme, described connecting rod connects the corresponding nearest summit of the carrier unit adjacent with two.The quantity of waist connecting rod used is more than the consumption of head and afterbody.The quantity of the carrier unit joint of described waist is more than the quantity of head and afterbody.Described waist span is greater than the span of head and afterbody respectively.The width of each carrier unit joint of described head and afterbody is each carrier unit pitch width degree 1.1-3 times of waist.
The beneficial effects of the utility model are:
1, support mid portion due to the length of wavy annular supporting construction unit shorter, the support member bar of carrier unit joint is wide comparatively large, so support mid portion has higher support strength, can effectively strut narrow lesion vessels;
2, support mid portion due to the length of wavy annular supporting construction unit shorter, unit supports bar number is more, setback density is large, distance between carrier unit joint is less, so the windowing area of support mid portion is less, the speckle of lesion vessels effectively can be prevented to come off, reduce the risk of blocking distal vessels;
3, support two end portions due to the length of ring-type supporting construction unit longer, carrier unit joint number order is less, the support bar number of carrier unit joint is less, bar is wide less, distance between carrier unit joint is larger, connecting rod number between carrier unit joint is less, so support two end portions has lower radial support intensity, less metal coverage rate and good compliance, stimulates so just greatly reduce the healthy blood vessel at lesion vessels two ends.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that self expandable intravascular stent implants stenotic lesion blood vessel;
Fig. 2 is the expansion schematic diagram of self expandable intravascular stent of the present invention.
Detailed description of the invention
In order to further set forth structure of the present utility model, be further described below in conjunction with accompanying drawing:
The method as schemed, self expandable intravascular stent 3 implants the specific requirement of stenotic lesion blood vessel 1 as seen from Figure 1, the length of stenotic lesion blood vessel 1, and be also the length that support really covers lesion vessels, physical length changes according to the length of pathological changes 2.Head and afterbody cover the length of healthy blood vessel at support, and length generally immobilizes, between 5mm to 10mm.In actual clinical treatment, play the waist that real therapeutical effect is support, need stronger support strength, strut narrow lesion vessels.And for the both ends of carrier head and afterbody, need lower support strength, reduce the stimulation to healthy blood vessel.And the support strength at the Self-expanded stent mid portion used clinically at present and both ends is substantially as broad as long.
As shown in Figure 2, this is the expanded view of a self expandable intravascular stent 3, from figure can be clear and definite find out that this support is divided into three parts, be respectively head L2, waist L1 and afterbody L3, head L2 is identical with afterbody L3 structure, and three parts are all be made up of wavy annular supporting construction unit; Each described wavy annular supporting construction unit forms arranged in parallel by several carrier units joint, connected by connecting rod each other, the carrier unit joint coming head L2 and afterbody L3 is as seen from the figure identical, they are two carrier unit joint formations respectively, and the bending density of carrier unit joint is relatively thin, connecting rod quantity between carrier unit joint is relatively little, and the metallic rod of Component units joint is wide also relatively little.The waist L1 of centre is then different, be that the density of bending or the quantity of carrier unit joint are all greater than two ends, and the height of each bending is smaller than the bending height of two ends at waist L1.The intermediate intensity of the self expandable intravascular stent formed thus is large, and auxiliary fixation is only played at two ends.
Intravascular stent of the present invention is divided into waist L1, head L2 and afterbody L3 as seen from Figure 2, and wherein head L2 is identical with the structure of afterbody L3 support.
As seen from Figure 2, the ring-type supporting construction element length of carrier head L2 and afterbody L3 is greater than the ring-type supporting construction element length of central waist L1.Doubly value is between 1.1 times to 3 times.
As seen from Figure 2, single ripple support member number that the ring-type supporting construction unit that single ripple support member number that the ring-type supporting construction unit of rostral-caudal L2, L3 comprises is less than mid portion L1 comprises.Single ripple support member number of waist bracket unit joint is between 9-30, and single ripple support member number of the carrier unit joint of head L2 and afterbody L3 is between 6-12.
As seen from Figure 2, single ripple support member bar of rostral-caudal L2, L3 is wide, and to be less than single ripple support member bar of mid portion L1 wide, and single ripple support member bar of rostral-caudal is wide between wide 1.1 times to 2 times of centre single ripple support member bar.As seen from Figure 2, the distance between the ring-type supporting construction unit of head tail L2, L3 is greater than the distance between the ring-type supporting construction unit of mid portion L1.The doubly value of length is between 1.1 times to 4 times.
As seen from Figure 2, the number of connecting key between the ring-type supporting construction unit that the number of the connecting rod between the ring-type supporting construction unit of rostral-caudal L2, L3 is less than mid portion L1.The mono-ripple support member of the every 3-6 of rostral-caudal L2, L3 1 connecting key, the every 1-3 of mid portion L1 single ripple support member 1 connecting key.
Support manufactures through the mode of laser cut Nitin superelastic alloy pipe (external diameter 2.5mm), through special shape setting heat treatments, is expanded to the support of Φ 8x40mm; Support is through surface treatment.
Claims (6)
1. the self-expanding type blood vessel dilator of a unique texture, its entirety is a wavy annular supporting construction, it is characterized in that: it is made up of three parts, be respectively head, waist and afterbody, described head is identical with tail structure, and three described parts are all be made up of wavy annular supporting construction unit; Each described wavy annular supporting construction unit forms arranged in parallel by several carrier units joint, and connected and composed by connecting rod; The gap of the carrier unit joint of head and afterbody is greater than the carrier unit internode gap of waist; The setback density of the carrier unit joint of waist is greater than head and afterbody simultaneously.
2. the self-expanding type blood vessel dilator of a kind of unique texture according to claim 1, is characterized in that: described connecting rod connects the corresponding nearest summit of the carrier unit adjacent with two.
3. the self-expanding type blood vessel dilator of a kind of unique texture according to claim 1, is characterized in that: the quantity of waist connecting rod used is more than the consumption of head and afterbody.
4. the self-expanding type blood vessel dilator of a kind of unique texture according to claim 1, is characterized in that: the quantity of the carrier unit of described waist joint is more than the quantity of head and afterbody.
5. the self-expanding type blood vessel dilator of a kind of unique texture according to claim 1, is characterized in that: described waist span is greater than the span of head and afterbody respectively.
6. the self-expanding type blood vessel dilator of a kind of unique texture according to claim 1, is characterized in that: the width of each carrier unit joint of described head and afterbody is 1.1-3 times of each carrier unit pitch width degree of waist.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420632883.3U CN204121205U (en) | 2014-10-29 | 2014-10-29 | The self-expanding type blood vessel dilator of unique texture |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420632883.3U CN204121205U (en) | 2014-10-29 | 2014-10-29 | The self-expanding type blood vessel dilator of unique texture |
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| CN204121205U true CN204121205U (en) | 2015-01-28 |
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| CN201420632883.3U Active CN204121205U (en) | 2014-10-29 | 2014-10-29 | The self-expanding type blood vessel dilator of unique texture |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017067396A1 (en) * | 2015-10-23 | 2017-04-27 | 李雷 | Vascular stent |
| CN107874878A (en) * | 2016-09-30 | 2018-04-06 | 苏州茵络医疗器械有限公司 | Support for implantable intravascular |
-
2014
- 2014-10-29 CN CN201420632883.3U patent/CN204121205U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017067396A1 (en) * | 2015-10-23 | 2017-04-27 | 李雷 | Vascular stent |
| CN107874878A (en) * | 2016-09-30 | 2018-04-06 | 苏州茵络医疗器械有限公司 | Support for implantable intravascular |
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