CN219878921U - Restraint support of sacculus - Google Patents
Restraint support of sacculus Download PDFInfo
- Publication number
- CN219878921U CN219878921U CN202320070090.6U CN202320070090U CN219878921U CN 219878921 U CN219878921 U CN 219878921U CN 202320070090 U CN202320070090 U CN 202320070090U CN 219878921 U CN219878921 U CN 219878921U
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- Prior art keywords
- balloon
- repeating unit
- restraint
- arc segment
- arc section
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- 230000007704 transition Effects 0.000 claims abstract description 20
- 230000002792 vascular Effects 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 4
- 210000004204 blood vessel Anatomy 0.000 abstract description 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 210000003128 head Anatomy 0.000 description 17
- 239000000178 monomer Substances 0.000 description 11
- 238000002399 angioplasty Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 206010070693 Vascular dissection Diseases 0.000 description 2
- 206010053648 Vascular occlusion Diseases 0.000 description 2
- 206010057469 Vascular stenosis Diseases 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005429 filling process Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 208000021331 vascular occlusion disease Diseases 0.000 description 2
- 229910018131 Al-Mn Inorganic materials 0.000 description 1
- 229910018461 Al—Mn Inorganic materials 0.000 description 1
- 208000024172 Cardiovascular disease Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 208000024248 Vascular System injury Diseases 0.000 description 1
- 208000012339 Vascular injury Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000013152 interventional procedure Methods 0.000 description 1
- 238000010147 laser engraving Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002980 postoperative effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 208000037803 restenosis Diseases 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 210000005077 saccule Anatomy 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000008733 trauma Effects 0.000 description 1
- 238000007631 vascular surgery Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model provides a restraint support of sacculus, includes proximal end head, transition portion, main part, distal end head, and proximal end head passes through transition portion and connects on main part, and distal end head passes through transition portion and connects on main part, and proximal end head, distal end head and the both sides foot union coupling of sacculus to fix this restraint support on the sacculus, make main part parcel on the surface of sacculus, can make the sacculus controllably, evenly, atraumatic expansion in the blood vessel through this restraint support, promote the plaque improvement, it aims at reducing strain and damage on the vascular wall.
Description
Technical Field
The utility model relates to the technical field of vascular interventional therapy devices, in particular to a constraint bracket of a balloon.
Background
Cardiovascular disease is one of the major killers of life threatening humans in contemporary society. At present, stent implantation is a main method for treating vascular stenosis, but long-term existence of a stent as a foreign body in a body can cause immune rejection, and patients need to take anticoagulants for a long time. Through development for over 20 years, the concept of 'intervention without implantation' is gradually accepted by the vascular surgery world, the trauma caused is small, the later recovery effect of a patient is more obvious, and a plurality of enterprises at home and abroad develop related medical instrument products at present.
One of the most common interventional procedures for balloon angioplasty is balloon angioplasty. However, conventional balloon angioplasty is often accompanied by vascular injury, such as by balloon proximal and distal diameters greater than balloon central diameters during balloon inflation, i.e., the "dog bone effect", resulting in over-dilation of the vessel in contact with the balloon ends, resulting in vascular wall injury and longitudinal balloon elongation accelerating vascular dissection (> 30%), while acute vascular occlusion (5% -12%) and post-operative restenosis (50%) of the lesion site may be induced. Vascular dissection, acute vascular occlusion, vascular wall injury are vascular wounds created by traditional balloon angioplasty, and traditional balloon angioplasty itself is not sufficiently successful in dredging the lumen.
The support strength of the balloon-constrained stent main body in the market at present basically meets the requirements, but the balloon-constrained stent main body has some defects, (1) in the balloon filling process, the stent main body can twist along with the balloon main body, so that uneven structure of the surface of the balloon is caused; (2) The constraint stent itself has poor flexibility, resulting in poor ability to adapt to the vessel when implanted at the lesion site; (3) After the balloon is depressurized, the constraint bracket has poor recoil performance on the balloon, so that the whole balloon is not easy to withdraw from the body.
Disclosure of Invention
Aiming at the defects, the technical problem to be solved by the utility model is to provide the restraint bracket of the saccule, which has better stability, simple structure and convenient operation, and can meet the requirements of treating vascular stenosis in clinic.
In order to solve the technical problems, the utility model adopts the technical proposal that,
the main body of the balloon restraint bracket comprises a circumferential restraint ring and an axial restraint rod, wherein the circumferential restraint ring is fixed on the axial restraint rod, and a grid window is formed between the circumferential restraint ring and the axial restraint rod.
As a preferable mode of the present utility model, the circumferential confinement ring includes a first repeating unit and a second repeating unit, and the first repeating unit and the second repeating unit are alternately arranged on the balloon confinement stent.
As a preferred embodiment of the present utility model, the adjacent first repeating units and second repeating units are arranged offset from each other.
As a preferred scheme of the utility model, the first repeating unit comprises a first arc section, a second arc section, a third arc section and a fourth arc section, wherein the first arc section and the second arc section are connected at the axial constraint rod, the third arc section and the fourth arc section are connected at the axial constraint rod, the first arc section and the fourth arc section are connected through a straight line, and the second arc section and the third arc section are connected through a straight line.
As a preferable mode of the utility model, the first arc section and the second arc section are concentric circles, and the third arc section and the fourth arc section are concentric circles.
As a preferred embodiment of the present utility model, the axial restraint rod includes a peak portion and a valley portion, the first repeating unit is connected to the peak portion, and the second repeating unit is connected to the valley portion.
As a preferable mode of the utility model, the interval between the first repeating unit and the second repeating unit is 3mm-6mm.
As a preferable mode of the utility model, the dislocation distance between the first repeating unit and the second repeating unit is 0.05mm-0.5mm.
As a preferred embodiment of the present utility model, the balloon-constraining stent comprises a proximal head portion, a transition portion, a main body portion, and a distal head portion, the proximal head portion being connected to the main body portion by the transition portion, the distal head portion being connected to the main body portion by the transition portion.
As a preferred embodiment of the present utility model, the stem width and wall thickness of the proximal head portion, the transition portion, the main body portion and the distal head portion are within the range of 0.06mm to 0.15mm.
The utility model has the beneficial effects that the flexible performance and the retractive performance of the constrained stent are good, the constrained stent is convenient to convey and retract in vivo, each grid unit of the stent can effectively coordinate and deform, the torsion of the stent in the balloon filling process is greatly reduced, the axial shrinkage rate of the stent main body is reduced, and the constrained stent has the function of accurate positioning during treatment.
Drawings
Fig. 1 is a schematic view showing a structure in which a restraining stent according to the first embodiment is deployed in a plane.
FIG. 2 is an enlarged schematic view of C in FIG. 1;
FIG. 3 is an enlarged view of a first repeat unit;
FIG. 4 is an enlarged view of a second repeat unit;
FIG. 5 is an enlarged view of a third repeating monomer;
FIG. 6 is a fourth repeating unit magnification;
fig. 7 is a schematic view showing a structure of a stent according to the second embodiment in a plane.
Fig. 8 is a schematic semi-sectional view of the balloon and constraining scaffold in the balloon inflated state.
Reference numerals: a proximal head part A, a transition part B, a main body part C, a distal head part D, a circumferential constraint ring E, an axial constraint rod F, a grid window G, a first repeating unit 1, a first circular arc 11, a second circular arc 12, a third circular arc 13, a fourth circular arc 14, a second repeating unit 2, a fifth circular arc section 21, a sixth circular arc section 22, a seventh circular arc section 23, an eighth circular arc section 24, a first repeating unit 3, a second repeating unit 4, a third repeating unit 5, a fourth repeating unit 6 and a balloon 7.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
Example 1
The utility model provides a restraint support of sacculus, includes proximal end head A, transition portion B, main part C, distal end head D, and proximal end head A passes through transition portion B and connects on main part C, and distal end head D passes through transition portion and connects on main part C, and proximal end head A, distal end head D are connected with the both sides foot pipe of sacculus 7 to fix this restraint support on the sacculus, make main part C parcel on the surface of sacculus 7.
The main body part C of the restraint bracket comprises a circumferential restraint ring E and an axial restraint rod F, the circumferential restraint ring E is arranged on the axial restraint rod F in a poor way, a grid window G and a Wang Ge window can be formed between the circumferential restraint ring E and the axial restraint rod F and can be changed relatively, the restraint bracket is wrapped outside the balloon, the restraint bracket is deformed along with the balloon in the balloon inflation process, a certain restraint force is generated on the surface of the balloon by the circumferential restraint ring E and the axial restraint rod F of the restraint bracket in the balloon continuous inflation process, the surface of the balloon positioned in the grid window G bulges out of the grid window G to form a pillow part, the surface of the balloon opposite to the circumferential restraint ring E and the axial restraint rod F is in an inward sinking state, and a groove part is formed, so that the balloon is conveniently fixed in a blood vessel.
The circumferential constraint ring E comprises a plurality of repeatedly arranged first repeating units 1 and a plurality of second repeating units 2, the first repeating units 1 and the second repeating units 2 are alternately arranged along the axial direction of the constraint bracket, the structures of the first repeating units 1 and the second repeating units 2 are identical, the adjacent first repeating units 1 and second repeating units 2 are arranged in a staggered mode, namely, the second repeating units 2 are obtained by the first repeating units 1 in a staggered mode, when the planes of the first repeating units 1 and the second repeating units 2 are unfolded, the dislocation distance L2 between the first repeating units 1 and the second repeating units 2 is 0.05mm-0.5mm, and the axial distance L1 between the first repeating units 1 and the second repeating units 2 is 3mm-6mm.
When the balloon is inflated to a nominal pressure, the diameter of the first repeating unit and the second repeating unit are expanded to be smaller than the diameter of the balloon main body, so that the formation of the pillow part and the groove part is facilitated.
The first repeating unit 1 is provided with a first circular arc 11, a second circular arc 12, a third circular arc 13 and a fourth circular arc 14, the first circular arc section 11 and the second circular arc section 12 are connected at the repeating single body, the third circular arc section 13 and the fourth circular arc section 14 are connected at the repeating single body, the first circular arc section 11 and the fourth circular arc section 14 are connected through a straight line, the second circular arc section 12 and the third circular arc section 13 are connected through a straight line, and a plurality of repeated first circular arc 11, second circular arc 12, third circular arc 13 and fourth circular arc 14 are arranged in the first repeating unit 1.
The second repeating unit 2 comprises a fifth arc section 21, a sixth arc section 22, a seventh arc section 23 and an eighth arc section 24, wherein the fifth arc section 21 and the sixth arc section 22 are connected at the repeating unit, the seventh arc section 23 and the eighth arc section 24 are connected at the repeating unit, the fifth arc section 21 and the eighth arc section 24 are connected through a straight line, the sixth arc section 22 and the seventh arc section 23 are connected through a straight line, and a plurality of repeated fifth arc section 21, sixth arc section 22, seventh arc section 23 and eighth arc section 24 are arranged in the same second repeating unit 2.
The circular arcs of the first repeating unit 1 and the second repeating unit 2 are connected with the straight line in a tangential manner, and the radii of the first circular arc segment 11, the second circular arc segment 12, the third circular arc segment 13, the fourth circular arc segment 14, the fifth circular arc segment 21, the sixth circular arc segment 22, the seventh circular arc segment 23 and the eighth circular arc segment 24 are equal.
The first arc section 11 and the second arc section 12 are concentric circles, the third arc section 13 and the fourth arc section 14 are concentric circles, the fifth arc section 21 and the sixth arc section 22 are concentric circles, and the seventh arc section 23 and the eighth arc section 24 are concentric circles.
A plurality of mutually parallel axial restraint rods F are arranged in the main body part C, each axial restraint rod F comprises a plurality of first repeated monomers 3, a plurality of second repeated monomers 4, a plurality of third repeated monomers 5 and a plurality of fourth repeated monomers 6, each third repeated monomer 5 is obtained by horizontally mirroring the corresponding first repeated monomer 3, each second repeated monomer 4 is obtained by vertically mirroring the corresponding third repeated monomer 5, and each fourth repeated monomer 6 is obtained by horizontally mirroring the corresponding second repeated monomer 4.
Wherein the first repeating unit 3 and the fourth repeating unit 6 form a valley portion, the second repeating unit 4 and the third repeating unit 5 form a peak portion, the first repeating unit 1 is connected to the peak portion, and the second repeating unit 2 is connected to the valley portion.
In this embodiment, the first repeating unit 3, the second repeating unit 4, the third repeating unit 5 and the fourth repeating unit 6 are all arc structures, so that the axial restraint rod F is in a wavy arrangement.
The two ends of the first repeating unit 4 are respectively connected with the outer sides of the junctions of the first circular arc 11 and the second circular arc 12 and the inner sides of the junctions of the fifth circular arc 21 and the sixth circular arc 22, the two ends of the second repeating unit 4 are respectively connected with the inner sides of the junctions of the third circular arc 13 and the fourth circular arc 14 and the outer sides of the junctions of the seventh circular arc 23 and the eighth circular arc 24, and the two ends of the third repeating unit 5 are respectively connected with the outer sides of the junctions of the fifth circular arc 21 and the sixth circular arc 22 and the inner sides of the junctions of the first circular arc 11 and the second circular arc 12, and the two ends of the fourth repeating unit 6 are respectively connected with the inner sides of the junctions of the seventh circular arc 23 and the eighth circular arc 24 and the outer sides of the junctions of the third circular arc 13 and the fourth circular arc 14.
The transition parts B are linear rod pieces, and the transition parts B are connected to the axial constraint rods F to prevent the end parts of the axial constraint rods F from tilting.
The stem widths and wall thicknesses of the proximal and distal head portions, the transition portion and the main body portion of the constraining scaffold are 0.06mm-0.15mm.
The structure of proximal end head A, distal end head D is the symmetry setting, in order to guarantee at the sacculus in-process of inflating, proximal end head A, distal end head D have certain deformation and displacement ability, and proximal end head A, distal end head D are wave structure, and transition portion B connects on wave crest of wave structure, and when the sacculus was full, proximal end head A, distal end head D can take place certain deformation, prevent this restraint support damage.
The constraint bracket can be formed by adopting metal pipe laser engraving, and the surface smoothness is improved through post-treatment procedures such as heat setting, acid washing, electrochemical polishing and the like.
The material of the constraint bracket is memory alloy (Ni-Ti alloy, cu-Al-Mn alloy, etc.), in this embodiment, ni-Ti alloy is preferable, and the phase transition temperature (Af point) of the bracket is between 10 ℃ and 30 ℃.
Example two
In this embodiment, as an alternative to the first embodiment, the first repeating unit 3, the second repeating unit 4, the third repeating unit 5, and the fourth repeating unit 6 in this embodiment are all of a fold line structure, and the rest of the structures are identical to those in the embodiment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the terms corresponding to the reference numerals in the drawings are used more herein, the possibility of using other terms is not excluded; these terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (8)
1. The balloon restraint bracket is characterized in that a main body of the balloon restraint bracket comprises a circumferential restraint ring and an axial restraint rod, the circumferential restraint ring is fixed on the axial restraint rod, and a grid window is formed between the circumferential restraint ring and the axial restraint rod;
the circumferential constraint ring comprises a first repeating unit (1) and a second repeating unit (2), and the first repeating unit (1) and the second repeating unit (2) are alternately arranged on the balloon constraint bracket;
the axial restraint rod comprises peaks and valleys, wherein the first repeating unit (1) is connected to the peaks, and the second repeating unit (2) is connected to the valleys.
2. A balloon restraint stent according to claim 1, characterized in that adjacent first repeating units (1) and second repeating units (2) are arranged in a staggered manner.
3. A constraining support according to claim 1, wherein the first repeating unit (1) comprises a first arc segment (11), a second arc segment (12), a third arc segment (13) and a fourth arc segment (14), the first arc segment (11) and the second arc segment (12) being connected at an axial constraining rod, the third arc segment (13) and the fourth arc segment (14) being connected at an axial constraining rod, the first arc segment (11) and the fourth arc segment (14) being connected by a straight line, the second arc segment (12) and the third arc segment (13) being connected by a straight line.
4. A balloon restraint stent according to claim 3, characterized in that the first arc section (11) and the second arc section (12) are concentric circles, and the third arc section (13) and the fourth arc section (14) are concentric circles.
5. A balloon constraining scaffold according to claim 1, wherein the spacing between the first repeat unit (1) and the second repeat unit (2) is 3mm-6mm.
6. A balloon constraining stent according to claim 2, wherein the offset distance between the first repeat unit (1) and the second repeat unit (2) is 0.05mm-0.5mm.
7. A balloon-constraining stent according to claim 1, wherein the balloon-constraining stent comprises a proximal head portion (a), a transition portion (B), a main body portion (C), a distal head portion (D), the proximal head portion (a) being connected to the main body portion (C) by the transition portion (B), the distal head portion (D) being connected to the main body portion (C) by the transition portion (B).
8. A constraining stent according to claim 1, wherein the stem width and wall thickness of the proximal head (a), transition (B), body (C) and distal head (D) are in the range of 0.06mm-0.15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320070090.6U CN219878921U (en) | 2023-01-10 | 2023-01-10 | Restraint support of sacculus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320070090.6U CN219878921U (en) | 2023-01-10 | 2023-01-10 | Restraint support of sacculus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219878921U true CN219878921U (en) | 2023-10-24 |
Family
ID=88400151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320070090.6U Active CN219878921U (en) | 2023-01-10 | 2023-01-10 | Restraint support of sacculus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219878921U (en) |
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2023
- 2023-01-10 CN CN202320070090.6U patent/CN219878921U/en active Active
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