CN101327151B

CN101327151B - Aortic valve forming ring

Info

Publication number: CN101327151B
Application number: CN2007101234124A
Authority: CN
Inventors: 许尚栋; 黄方炯
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-22
Filing date: 2007-06-22
Publication date: 2012-01-25
Anticipated expiration: 2027-06-22
Also published as: CN101327151A

Abstract

The present invention relates to an aortic valve annuloplasty ring. The annuloplasty ring consists of an annular framework, the surface of which is coated with biocompatible material, wherein, the annular framework comprises an upper end ring, a lower end ring and at least one connecting rod connected between the upper end ring and the lower end ring. The upper end ring and the lower end ring of the annular framework are parallel; or the upper end ring and the lower end ring respectively comprise three wave crests raised towards the same direction along the axial direction; or the upper end ring comprises three wave crests raised towards the same direction along the axial direction. The aortic valve annuloplasty ring can cyclically condense enlarged aortic valve uniformly.

Description

The aortic valve forming ring

Technical field

The present invention relates to a kind of field of medical technology of department of cardiac surgery valve forming, be meant a kind of aortic valve forming ring especially.

Background technology

The aortic root tumor refers to aortic root, comprises that expansion appears in aortic valvular ring, aortic sinus, hole pipe boundary, and this disease can merge the aortic valve moderate mostly to severe regurgitation.Conventional surgical is to adopt the aortic root replacement art, comprises the mechanical prosthetic valve replacement aortic root with valved conduit, and does coronary artery and transplant, and performs the operation like Bentall.The shortcoming of its operation is because what use is mechanical prosthetic valve, need take anticoagulant throughout one's life, tends to bring a lot of side effect.

Owing to aortic root tumor patient's aortic valve is normally normal, backflowing of aortic valve causes that therefore, the root that the reservation aortic valve occurred is replaced operation because lobe ring and hole pipe have a common boundary to expand---the David operation.Its principle is to dwindle the diameter of aortic valvular ring and hole pipe boundary.The method that adopts is through horizontal mattress suture line, will be placed in the aortic root outside less than the artificial blood vessel of aortic valvular ring, with the reduced of aortic valvular ring.This method needs the fully free aortic root that manifests; Open aortic root and surrounding tissue are free, need horizontal Ru Shi suture be passed aortic root under the lobe leaf, outside the left chamber side direction of lobe ring during stitching, because the artificial blood vessel is very soft; If horizontal Ru Shi suture can not pass from the artificial blood vessel equably; Can cause the lobe ring to be dwindled unevenly, consequence is that the lobe leaf is asymmetric, residual incompetence.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of aortic valve forming ring, with realization aortic valvular ring is dwindled equably.

Aortic valve forming ring provided by the invention is made up of the cyclic skeleton that the surface scribbles biocompatible materials.

Preferable, the diameter of said cyclic skeleton is 18 millimeters to 36 millimeters.

Wherein, said skeleton comprise top ring, lower loop and be connected top ring and lower loop between at least one connecting rod.

Optional, the top ring of said cyclic skeleton is parallel with lower loop.

Preferable, the distance in axial direction of said top ring and lower loop is 2 millimeters to 5 millimeters.

Optional, said top ring and lower loop comprise the crest of three same vertically direction protrusions respectively.

Preferable, the distance in axial direction of said top ring crest and lower loop crest is 1.5 millimeters to 5 millimeters, the distance in axial direction of top ring crest and lower loop trough is 3 millimeters to 6 millimeters.

Optional, said top ring comprises the crest of three same vertically direction protrusions.

Preferable, the distance in axial direction of top ring crest and lower loop is 3 millimeters to 6 millimeters, the distance in axial direction of top ring trough and lower loop is 1.5 millimeters to 2 millimeters.

Preferable, said three crests are 120 degree at the place and distribute on ring week.

Aorta forming ring provided by the invention; Do not need the aortic root replacement art described in the background technology to carry out aortal displacement; And,, and adopt the aortic valve forming ring of band skeleton of the present invention because the aorta forming ring that the present invention adopts is unlike adopting softish artificial blood vessel in the David technology; So uniform elasticity can be arranged, can dwindle aortic valvular ring uniformly.

Aorta forming ring of the present invention, owing to can be wave or Phaleria macrocarpa shape, can be corresponding with three boundaries of aortic valve, be convenient to implant.

And, when aorta forming ring of the present invention can be placed under the aortic valve left chamber side, except the lobe ring can also be brought other benefits by ring contracts equably: the first aortic root that need not dissociate; It two is that all sutures will pass aortic valvular ring, can not damage the cardiac conduction bundle.

Description of drawings

Fig. 1 is annular aortic valve forming ring, and wherein Fig. 1-A is an axonometric chart, and Fig. 1-B is an expanded view;

Fig. 2 is corrugated aortic valve forming ring, and wherein Fig. 2-A is an axonometric chart, and Fig. 2-B is an expanded view;

Fig. 3 is the aortic valve forming ring of crown shape, and wherein Fig. 3-A is an axonometric chart, and Fig. 3-B is an expanded view;

Fig. 4 is used to encircle the fixing means of aortic valve of contracting.

The specific embodiment

Aortic valve forming ring provided by the invention can encircle the aortic valvular ring that enlarges equably and contract, and to occur the lobe leaf in the compression process asymmetric to avoid encircling, the situation of residual incompetence.Aorta forming ring of the present invention is made up of metallic framework for the annular of sealing, and its outer medical implantable polyester material that is surrounded by biocompatibility referring to accompanying drawing, is elaborated:

Show first embodiment of aortic valve forming ring of the present invention like Fig. 1, be circular forming ring, the rectangular belt like shape of side expanded view shown in Fig. 1-B, bottom (being that lower loop launches) is straight and parallel with top (being the top ring expansion).Referring to the axonometric chart shown in Fig. 1-A, the diameter of the circle during vertical view, promptly the diameter of cyclic skeleton can be 18 millimeters to 36 millimeters, the distance in axial direction of top ring 105 and lower loop 106, promptly the height of circular forming ring can be 2 millimeters to 5 millimeters.

For circular forming ring, its inner skeleton can comprise referring to the side expanded view shown in Fig. 1-B: the metallic framework 104 of circular forming ring 1, form by top ring 105, lower loop 106 and some intermediary connecting rods 107.Top ring 105 parallels with lower loop 106, and the height of each connecting rod 107 is consistent.

Show second embodiment of aortic valve forming ring of the present invention like Fig. 2; Be the waveform forming ring; Top ring and lower loop comprise three crests that protrude to same direction vertically respectively; The side expanded view is the belt like shape that comprises three crests, and bottom (being that lower loop launches) is parallel with top (being that top ring launches), is the wave curve shape.Referring to the axonometric chart shown in Fig. 2-A, the distance of three crests 201 on circumference is 120 degree, respectively the delta-shaped region under three boundaries of corresponding aortic valve.The distance in axial direction of top ring crest 201 and lower loop trough 202, promptly vertical dimension can be 3 millimeters to 6 millimeters among the figure.The distance in axial direction of waveform forming ring 2 top ring crests and lower loop crest can be 1.5 millimeters to 5 millimeters, the diameter of cyclic skeleton, and promptly the round diameter during vertical view can be 18 millimeters to 36 millimeters.

For the waveform forming ring, its inner skeleton can comprise referring to the side expanded view shown in Fig. 2-B: the metallic framework 204 of waveform forming ring 2, form by top ring 205, lower loop 206 and some intermediary connecting rods 207.Three crests 201 and three troughs 202 are arranged.Top ring 205 parallels with lower loop 206, and the height of each connecting rod 207 is consistent.

Show the 3rd embodiment of aortic valve forming ring of the present invention like Fig. 3, be the crown shape forming ring, the axonometric chart shown in Fig. 3-A is crown spline, and its top ring comprises the crest of three same vertically directions protrusions.The bottom of side expanded view (being that lower loop launches) is straight, and top (being that top ring launches) is the wave curve shape.Referring to the axonometric chart shown in Fig. 3-A, it is 120 degree that top ring has the circumferential distance of three 301, three pointed crests of pointed crest (wedge angle) that make progress, respectively the delta-shaped region under three boundaries of corresponding aortic valve.The diameter of crown shape forming ring 3 cyclic skeletons, promptly the round diameter during vertical view can be 18 millimeters to 36 millimeters, and the distance in axial direction of top ring crest and lower loop is 3 millimeters to 6 millimeters.The top ring minimum point, promptly the distance in axial direction of top ring trough and lower loop is 1.5 millimeters to 2 millimeters.

For the crown shape forming ring,, can comprise referring to the side expanded view shown in Fig. 3-B: the metallic framework 304 of crown shape forming ring 3, form by top ring 305, lower loop 306 and some intermediary connecting rods 307.Top ring has three pointed crests 301 that make progress, and lower loop is straight, and top ring 305 is not parallel with lower loop 306, and the height of each connecting rod 307 is different.

The metallic framework of forming ring of the present invention, material can be niti-shaped memorial alloy, ultra alloy, cobalt chromium dynamax, the 316L medical stainless steel alloy etc. of playing of NiTi, and metallic framework can be rigidity, also can be flexible.The metal firmware can be made through the method for engraving or braiding.The outside of metallic framework is surrounded by the medical implantable polyester material with biocompatibility, can be terylene or politef.The cross section of forming ring can be ellipse or rectangle, and thickness is 0.5 millimeter～3 millimeters.

When aortic valve was shaped, this forming ring can place the aortic root outside, also can place left chamber side under the aortic valve, fixes through horizontal Ru Shi suture.Describe below:

When making aortic valve ring ring of circular forming ring and contract, its method is that circular forming ring is placed the aortic root outside.Method is fully free aortic root, and horizontal Ru Shi suture left chamber side under the aortic valve is from inside to outside passed aortic root, can be with or not be with pad, from inside to outside passes forming ring again, and forming ring is slided along suture, and lobe ring ring is contracted in knotting one by one.The method is with respect to using softish forming ring, and like the artificial blood vessel, the lobe ring can be encircled equably to contract.

When making the aortic valve shaping of waveform forming ring and crown shape forming ring, two kinds of manufacturing process are arranged.One of which such as circular forming ring place the aortic root outside with forming ring.

It two is when forming ring is placed under the aortic valve left chamber side; Two kinds of fixing meanss are arranged, and are that example describes with waveform ring 2, referring to shown in Figure 4; First method is earlier horizontal Ru Shi suture 6 to be passed forming ring 2 from inside to outside; Pass the lobe ring of lobe leaf 5 roots again, toe-in is beaten in aortic sinus 8, can be with or not be with pad 7; Second method is that the pad with horizontal Ru Shi suture places in the aortic sinus, and suture passes the lobe ring, passes forming ring more from outside to inside, and along sliding to the lobe ring under the suture, toe-in is beaten the inboard at forming ring with forming ring.In two kinds of methods, it is 4 corresponding that three pointed crests 301 that make progress of three crests 201 of waveform ring 2 and crown shape ring 3 and aortic valve three are had a common boundary.

We know, the David operation of mentioning in the background technology needs the fully free aortic root that manifest, and open because aortic root dissociated with surrounding tissue, damage surrounding tissue easily, like pulmonary artery, left atrium, right atrium etc.On the other hand since horizontal Ru Shi suture will be under the lobe leaf, pass aortic root outside the left chamber side direction of lobe ring, in the time of below having a common boundary, damage the cardiac conduction bundle easily through aortic valve RCC and no corolla lobes, cause the heart atrioventricular block.And the present invention places left chamber side under the aortic valve with forming ring, except the lobe ring can be also had advantage by ring contracts equably: the first aortic root that need not dissociate; It two is that all sutures will pass aortic valvular ring, can not damage the cardiac conduction bundle.

From on can find out that aortic valve forming ring of the present invention is even elastomeric material, so can dwindle aortic valvular ring uniformly.

The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. an aortic valve forming ring is characterized in that, said forming ring is made up of the biocompatible materials of cyclic skeleton and surfaces coated thereof, said cyclic skeleton comprise top ring, lower loop and be connected top ring and lower loop between connecting rod.

2. aortic valve forming ring according to claim 1 is characterized in that, the diameter of said cyclic skeleton is 18 millimeters to 36 millimeters.

3. aortic valve forming ring according to claim 1 is characterized in that the top ring of said cyclic skeleton is parallel with lower loop.

4. aortic valve forming ring according to claim 1 is characterized in that, the distance in axial direction of said top ring and lower loop is 2 millimeters to 5 millimeters.

5. aortic valve forming ring according to claim 3 is characterized in that, said top ring and lower loop comprise three crests that protrude to same direction vertically respectively.

6. aortic valve forming ring according to claim 5; It is characterized in that; The distance in axial direction of said top ring crest and lower loop crest is 1.5 millimeters to 5 millimeters, and the distance in axial direction of top ring crest and lower loop trough is 3 millimeters to 6 millimeters.

7. aortic valve forming ring according to claim 1 is characterized in that, said top ring comprises three crests that protrude to same direction vertically.

8. aortic valve forming ring according to claim 7 is characterized in that, the distance in axial direction of top ring crest and lower loop is 3 millimeters to 6 millimeters, and the distance in axial direction of top ring trough and lower loop is 1.5 millimeters to 2 millimeters.

9. according to claim 5 or 7 described aortic valve forming rings, it is characterized in that said three crests are 120 degree at the place and distribute on ring week.