CN206934214U - Artificial heart valve forming ring - Google Patents
Artificial heart valve forming ring Download PDFInfo
- Publication number
- CN206934214U CN206934214U CN201621418243.8U CN201621418243U CN206934214U CN 206934214 U CN206934214 U CN 206934214U CN 201621418243 U CN201621418243 U CN 201621418243U CN 206934214 U CN206934214 U CN 206934214U
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- Prior art keywords
- inner core
- head
- valve forming
- forming ring
- heart valve
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Abstract
It the utility model is related to a kind of artificial heart valve forming ring, including the support inner core being bent to form by supporter, the layer of silica gel being sheathed on the support inner core outer peripheral face and the transition head on the inner core free end, and the stitching floor being coated on outside the layer of silica gel.The utility model is by setting hardness in inner core free end less than transition head of the support inner core hardness simultaneously above stitching floor hardness, reduce the probability that stitching floor is pierced, effectively weaken annulus to be implanted into after human body with the degree relatively moved between each layer of heartbeat, ensure the stability of valve forming ring structure, reduce thrombotic risk.
Description
Technical field
It the utility model is related to implanted medical device technical field, more particularly to a kind of artificial heart valve forming ring.
Background technology
The heart of human body has four kinds of valves：Bicuspid valve, tricuspid valve, aorta petal and pulmonary valve.The presence of valve makes
Blood one-way flow in human heart is obtained, ensures normal blood circulation.
Once lesion occurs in valve, blood circulation of human body will be affected, and result even in heart failure and body internal organs
Feature lesion.The type of valve lesion is typically narrow or incompetence.The amplitude meeting that it opens when valve occurs narrow
Reduce, the blood into next chambers of the heart is accordingly reduced；Valvular inadequacy is still jagged after then closing so that part blood exists
Backflowed during ventricular contraction to atrium, cause output to reduce, atrium inner high voltage.
Conventional valve reparation angioplasty in treatment valve lesion at present, the heart that surgeon is damaged by extracorporal circulatory system reparation
Valve.In order to keep long-term therapeutic effect, after valve reparation plasty, one is often implanted into the natural annulus of human body
Artificial valve forming ring.
Artificial valve forming ring typically has a three-decker, and innermost layer is metal or high polymer material supporter, intermediate layer
For silica gel, outermost layer is stitching floor, and the supporter of wherein innermost layer primarily serves effectively moulding effect.For for tricuspid valve
Forming ring after valve reparation, it is shaped as non-close annular, in the rigid support for specifically including two relative free ends
Core, a silicone tube being set in outside rigid support inner core and the stitching floor being coated on outside silicone tube.
However, generally, upper operable in order to produce, the silica gel bore in intermediate layer is typically greater than the outer of inner core
Footpath, gap therebetween be present.Due to the presence in gap, after annulus is implanted into human body, with the bounce of heart, can be sent out between each layer
Raw relative movement, the free end of inner core can constantly wear stitching floor, and long will expose stitching floor.The inner core for exposing stitching floor is free
End contacts with heart tissue, as abnormal contact human body, increases thrombotic risk.
Therefore, it is necessary to design a kind of artificial heart valve forming ring that can reduce thrombosis risk, with reduction pair
The injury of human body.
Utility model content
The utility model provides a kind of artificial heart valve forming ring, including at least support inner core and is coated on the branch
Support the stitching floor outside inner core.The support inner core is open loop structure, has free end.The artificial heart valve forming ring also wraps
Include the transition head located at the free end.The hardness of the transition head is less than the hardness of the inner core, and is more than the stitching floor
Hardness.
In one of the embodiments, the support inner core is the column structure that free end has opening.
In one of the embodiments, the transition head includes connected inserting paragraph and head end section, and the inserting paragraph is located at
In the opening of the support inner core free end, the end of the head end section away from the inserting paragraph is the inner core and the transition
The overall end of head composition.
In one of the embodiments, the head end section includes connected anchor ring and sphere, the anchor ring internal diameter with it is described
The external diameter of inserting paragraph is equal, and the anchor ring external diameter is equal with the inner core external diameter.
In one of the embodiments, the coefficient of friction of the transition head is more than the coefficient of friction of the support inner core.
In one of the embodiments, the support inner core is solid club shaped structure.
In one of the embodiments, the mistake is inserted in the U-shaped structure of the transition head, the free end of the support inner core
In the U-type groove of ferry.
In one of the embodiments, the transition head includes housing section and head end section, and the collecting section is hollow structure,
The outer surface of the head end section is spherical calotte.
In one of the embodiments, the external diameter for housing section is equal to the external diameter of the silicone tube.
Valve forming ring inner core free end provided by the utility model is provided with transition head.Transition head material hardness is between support
Between the hardness and outer layer stitching floor hardness of inner core, compared to prior art, the transition head hardness contacted with stitching floor it is relatively low and
It is not sharp, the probability that stitching floor is pierced is greatly reduced, reduces thrombotic risk, reduces implanted prosthetic heart valve
Potential injury of the film forming ring to human body.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section for the artificial heart valve forming ring that the utility model first embodiment provides；
Fig. 2 is the front view of the transition head in Fig. 1；
Fig. 3 is the side view of the transition head in Fig. 1；
Fig. 4 is the diagrammatic cross-section for the artificial heart valve forming ring that the utility model second embodiment provides；
Fig. 5 is the side view of the transition head in Fig. 4.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example is described in further details to the utility model.It should be appreciated that specific embodiment described herein is only explaining this reality
With new, it is not used to limit the utility model.
Embodiment one
Reference picture 1, a kind of valve forming ring 10 include support inner core 11, silicone tube 21, stitching floor 31 and transition head 41.Branch
Support inner core 11 is open loop structure.Two transition heads 41 are respectively arranged on two free ends of supporter inner core 11.Silicone tube 21 is arranged
In support inner core 11 and transition head 41 outside, and the inwall of silicone tube 21 with support inner core 11 outer wall and transition head 41 expose support
The outer wall fitting of the part of inner core 11.Stitching floor 31 is wrapped in the periphery of silicone tube 21 and transition head 41.
Reference picture 1, support inner core 11 are open loop structure, adapt to Tricuspid annulus.Support inner core 11 is tubular structure, and it is wrapped
Include the free end 111 with opening, free end 112 with opening relative with free end 111 and connect two free ends
111 and 112 hollow cavity 113.Preferably, in the present embodiment, inner core 11 is cylindrical.
It should be appreciated that in other embodiments, support inner core can also be periphery cross section for ellipse, hexagon, eight
The cylindricality of other figures such as side shape, now, corresponding cooperation adjustment need to be only done to the shape of transition head.
Support inner core 11 can be made up of materials such as stainless steel, nickel cobalt (alloy), titanium alloy and Nitinols.In the present embodiment
In, inner core 11 is preferably Nitinol pipe.
Transition head 41 can be by being made with certain degree of hardness and material that is non-degradable or being absorbed by the body, and its hardness is less than interior
The material hardness of core 11 and the hardness for being higher than the material of stitching floor 31.The material that transition head 41 is made can be polyamide, gather to benzene two
The polymer such as formic acid second diester, polytetrafluoroethylene (PTFE) and polyethylene.It is less than the material hardness of inner core 11 just because of the hardness of transition head 41
And higher than the material of stitching floor 31 hardness (i.e. the difference of the hardness of transition head 41 and the hardness of stitching floor 31 be less than the hardness of inner core 11 and suture
The difference of 31 hardness of layer), when inner core 11 has same displacement amount and identical travel frequency with respect to silicone tube 21, transition head 41 is exposed
The probability that the probability of stitching floor 31 exposes stitching floor 31 compared with the end of inner core 11 when not setting transition head 41 is low, therefore the quilt of stitching floor 31
The probability of puncture is low, reduces thrombotic risk.Support the difference and transition head and stitching floor of inner core and transition head hardness hard
The difference of degree is closer better, and equal is optimal.This Partial Feature is applied to other embodiments.In the present embodiment, transition head 41
In mushroom (hereinafter referred to as " mushroom head 41 ")；Mushroom head 41 is process by the way of mold injection, is had preferably anti-
Pressure energy power and fold resistance.
Reference picture 2 and Fig. 3, mushroom head 41 include connected inserting paragraph 411 and head end section 412.Inserting paragraph 411 is out of support
The insertion of the free end 111 support inner core 11 of core 11, and be interference fitted with support inner core 11, by mushroom head 41 and support inner core 11
It is connected.That is, end of the head end section 412 away from inserting paragraph 411 is the overall end that inner core 11 and transition head 41 form.
Preferably, in the present embodiment, inserting paragraph 411 is cylindrical structural.
Head end section 412 includes connected anchor ring 4121 and smooth sphere 4122.The internal diameter of anchor ring 4121 is outer with inserting paragraph 411
Footpath is equal, and the external diameter of anchor ring 4121 is consistent with the external diameter of inner core 11.In this way, after inserting paragraph 411 is configured at 11 free end of inner core, head end
Section 412 can cover the free end face of inner core 11 just.For smooth sphere 4122 compared with anchor ring 4121 away from inserting paragraph 411, it can be appointed
What diameter is not less than a part of sphere of the spheroid of the external diameter of anchor ring 4121, preferably diameter and the external diameter identical hemisphere of anchor ring 4121
Body, smoothly transitted in this way, being formed between the outer peripheral face of smooth sphere 4122 and inner core 11.
It is highly preferred that in the present embodiment, the coefficient of friction of mushroom head 41 is higher than the coefficient of friction of inner core 11.In this way, treat silicon
Sebific duct 21 is placed on mushroom head 41 and after the periphery of inner core 11, the coefficient of friction just because of mushroom head 41 is higher than the friction of inner core 11
Coefficient, under identical positive pressure, the frictional force between mushroom head 41 and silicone tube 21 is more than inner core 11 and silicone tube 21
Between frictional force, so as to improve the frictional force between the entirety and silicone tube 21 that mushroom head 41 and inner core 11 form, reduce
The possibility relatively moved between entirety and silicone tube 21 that mushroom head 41 and inner core 11 form, reduces stitching floor 31 and is pierced
Probability, reduce thrombotic risk.
In addition, in the present embodiment, the spherical surface of mushroom head 41 ensures silicone tube 21, and when being arranged, inner surface will not be by
It to scraping, can fully be sheathed on outside inner core 11, farthest reduce gap therebetween, phase occurs after reducing implantation
To mobile possibility, the security performance of product is improved.
It is understood that in other embodiment, mushroom head can also be formed by the way of argon arc welding.For example, choose
One section of external diameter be slightly less than or equal to inner core internal diameter hardness be less than inner core hardness metal bar, by the metal bar part fill in
Enter in inner chamber, the other end exposed is directly welded into cheese., can also be by the way of laser spot welding by mushroom in order to strengthen fixing
Mushroom head is welded on inner core free end.
Stitching floor 31 is prepared by biocompatible materials.Stitching floor 31 is preferably fabric using terylene in the present embodiment
Into.
Embodiment two
Reference picture 4, a kind of valve forming ring 20 include support inner core 12, silicone tube 22, stitching floor 32 and transition head 42.Branch
Support inner core 12 is open loop structure.Two transition heads 42 are respectively arranged on two free ends of supporter inner core 12.Silicone tube 22 is arranged
In supporting outside inner core 12, the inwall of silicone tube 22 is bonded with the outer wall of supporter inner core 12；Stitching floor 32 be wrapped in silicone tube 22 and
The periphery of transition head 42.
Reference picture 4, support inner core 12 are open loop structure, adapt to Tricuspid annulus.Support inner core 12 is club shaped structure, and it has
There are a free end 121, the free end 122 relative with free end 121.Preferably, in the present embodiment, inner core 12 is cylindrical.
Support inner core 12 can be made up of materials such as stainless steel, nickel cobalt (alloy), titanium alloy and Nitinols.Propped up in the present embodiment
It is preferably Nitinol solid cylindrical bar to support inner core 12.
In other embodiments, support inner core is alternatively other column constructions, also can be hollow or part hollow structure.
Reference picture 5, transition head 42 include connected collecting section 421 and head end section 422.It is in hollow form to house section 421, and will
The free end of support inner core 12 is contained in wherein, and transition head 42 is connected with support inner core 12 in an interference fit.Also
It is to say, the overall end that head end section 422 forms away from the end for housing section 421 for inner core 12 and transition head 42.Preferably, originally
In embodiment, collecting section 421 is cylindrical hollow configuration, and the external diameter of end face 4211 is identical with silicone tube external diameter, in this way, and inner core
Two transition heads 42 of 12 interference fits will stop the movement of two free ends of the silicone tube 22 for being sheathed on the periphery of inner core 12, from
And displacement of the silicone tube 22 relative to inner core 12 is limited significantly.
Head end section 422 is a smooth sphere, and it can be one of any diameter not less than the spheroid for housing the external diameter of section 421
Bulb separation face, and the cross-sectional outer diameter with housing the junction of section 421 is equal with housing the external diameter of section 421.In the present embodiment, head end section
422 be preferably diameter and the collecting external diameter identical hemisphere of section 421.
Stitching floor 32 is prepared by biocompatible materials.Stitching floor 32 is preferably fabric using terylene in the present embodiment
Into.
Need it is emphasized that in the present embodiment, inwall is not scraped during to be arranged silicone tube, it is preferable that can be with
Selection does appropriate grinding process to 12 liang of free end edges of inner core.
It should be appreciated that even if the relative motion between silicone tube and support inner core is difficult to avoid that, because the utility model is set
A transition head is counted, its hardness is less than inner core material hardness and higher than the hardness of suture layer material, in inner core with respect to silicone tube
With same displacement amount and during identical travel frequency, inner core end is stabbed when the probability that transition head exposes stitching floor does not set transition head
Wear that the probability of stitching floor is low, ensure the integrality of annulus, reduce thrombotic risk.
Each technical characteristic of all of above embodiment can be suitably combined, to make description succinct, not to above-mentioned
The all possible combination of each technical characteristic in embodiment is all described.However, as long as the combination of these technical characteristics is not
Contradiction, all it is considered to be the scope of this specification record.
All of above embodiment only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (9)
1. a kind of artificial heart valve forming ring, including at least support inner core and the stitching floor supported outside inner core is coated on,
The support inner core is open loop structure, has free end, it is characterised in that the artificial heart valve forming ring also includes being located at
The transition head of the free end, the hardness of the transition head are less than the hardness of the inner core, and more than the hardness of the stitching floor.
2. valve forming ring according to claim 1, it is characterised in that the support inner core is the post that free end has opening
Shape structure.
3. valve forming ring according to claim 2, it is characterised in that the transition head includes connected inserting paragraph and head
Section is held, the inserting paragraph is in the opening of the support inner core free end, the end of the head end section away from the inserting paragraph
The overall end formed for the inner core and the transition head.
4. artificial heart valve forming ring according to claim 3, it is characterised in that the head end section includes connected ring
Face and sphere, the anchor ring internal diameter is equal with the external diameter of the inserting paragraph, and the anchor ring external diameter is equal with the inner core external diameter.
5. artificial heart valve forming ring according to claim 3, it is characterised in that the coefficient of friction of the transition head is big
In the coefficient of friction of the support inner core.
6. artificial heart valve forming ring according to claim 1, it is characterised in that the support inner core is solid bar-shaped
Structure.
7. the artificial heart valve forming ring according to claim 2 or 6, it is characterised in that the U-shaped knot of transition head
Structure, the free end of the support inner core are inserted in the U-type groove of the transition head.
8. artificial heart valve forming ring according to claim 7, it is characterised in that the transition head include house section and
Head end section, the collecting section is hollow structure, and the outer surface of the head end section is spherical calotte.
9. artificial heart valve forming ring according to claim 8, it is characterised in that the artificial heart valve forming ring
Also include the silicone tube being sheathed on outside the support inner core, the external diameter for housing section is equal to the external diameter of the silicone tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621418243.8U CN206934214U (en) | 2016-12-22 | 2016-12-22 | Artificial heart valve forming ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621418243.8U CN206934214U (en) | 2016-12-22 | 2016-12-22 | Artificial heart valve forming ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206934214U true CN206934214U (en) | 2018-01-30 |
Family
ID=61356636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621418243.8U Active CN206934214U (en) | 2016-12-22 | 2016-12-22 | Artificial heart valve forming ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206934214U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108125734A (en) * | 2018-02-11 | 2018-06-08 | 四川中盾知识产权服务有限公司 | A kind of heart valve forming ring |
| CN108125733A (en) * | 2018-02-11 | 2018-06-08 | 四川中盾知识产权服务有限公司 | A kind of heart valve tricuspid annulus |
| CN108378959A (en) * | 2018-02-11 | 2018-08-10 | 四川中盾知识产权服务有限公司 | A kind of heart valve forming ring with bridge layer |
-
2016
- 2016-12-22 CN CN201621418243.8U patent/CN206934214U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108125734A (en) * | 2018-02-11 | 2018-06-08 | 四川中盾知识产权服务有限公司 | A kind of heart valve forming ring |
| CN108125733A (en) * | 2018-02-11 | 2018-06-08 | 四川中盾知识产权服务有限公司 | A kind of heart valve tricuspid annulus |
| CN108378959A (en) * | 2018-02-11 | 2018-08-10 | 四川中盾知识产权服务有限公司 | A kind of heart valve forming ring with bridge layer |
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