CN213910721U - Cardiovascular expansion stent - Google Patents
Cardiovascular expansion stent Download PDFInfo
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- CN213910721U CN213910721U CN202021645497.XU CN202021645497U CN213910721U CN 213910721 U CN213910721 U CN 213910721U CN 202021645497 U CN202021645497 U CN 202021645497U CN 213910721 U CN213910721 U CN 213910721U
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- expansion
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- support rods
- guide pipe
- cardiovascular
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Abstract
The utility model provides a cardiovascular expansion support, include: a guide tube; at least one expansion frame, it evenly sets up on the stand, be used for expanding the blood vessel, it includes: the fixed ring is coaxially and fixedly sleeved on the guide pipe, and electromagnetic coils are uniformly arranged in the fixed ring; the sliding ring is coaxially sleeved on the guide pipe in a sliding manner; the return spring is coaxially sleeved on the guide pipe between the fixed ring and the sliding ring; the first support rods are uniformly arranged along the circumferential direction of the fixed ring, and one ends of the first support rods are respectively hinged with the fixed ring; the second support rods are arranged in one-to-one correspondence with the first support rods, one ends of the second support rods are respectively hinged with the sliding ring, and the other ends of the second support rods are hinged with the other ends of the first support rods; and the expansion plates are of cambered surface structures, are perpendicular to the planes of the first supporting rods and the second supporting rods, and are hinged to one point corresponding to the first supporting rods and the second supporting rods respectively.
Description
Technical Field
The utility model relates to the technical field of medical equipment, more specifically, the utility model relates to a cardiovascular expansion support.
Background
When cardiovascular surgery is performed, the aim of the surgery can be achieved only by performing vasodilatation treatment on part of the cardiovascular. When a cardiovascular expansion is performed on a patient clinically, a stent or a balloon is usually arranged in the cardiovascular of the patient, but because the cardiovascular pipeline is thin, the manual installation of the stent or the balloon is difficult, and if the blood circulation is completely blocked in the expansion process, symptoms such as hypotension, consciousness loss, convulsion and the like are easily caused, particularly for the condition of long blockage of the blood vessel, the life risk of the patient is easily caused in the expansion process.
Chinese utility model patent 201720679352.3 discloses a cardiovascular expander, including the air duct, air duct one end sets up the handle, and the other end sets up the direction head, and it is equipped with two cylindrical gasbags to close on direction head department cover on the air duct, is provided with the through-hole on the gasbag internal guide pipe wall, and even interval of gasbag circumference is provided with the drain hole, and two gasbag common covers are equipped with a radial expansion pipe. The radial expansion tube is expanded radially after the balloon is inflated, so that the blood vessel is expanded. However, although the device can ensure the liquid to flow when the blood vessel is expanded, the balloon is closely connected with the guide tube, the balloon basically and completely occupies the position corresponding to the blood vessel after the balloon is expanded and expanded, the operation can be only carried out on the blood vessel near the expander, and the operation cannot be carried out on the blood vessel at the expander.
The utility model discloses a chinese utility model patent 201721672740.5 discloses a cardiovascular expansion device, drives the depression bar through pushing down the briquetting and passes through the U-shaped groove and slide down in inflating the box inside surface, connects through the block rubber and blocks the round hole at the recess, and the L shape sealing block trompil that slides down spills, and gaseous passing through hose transmission props up the support after being full of gas with U-shaped screw thread gasbag through first inflation inlet. However, this device has the same problem as described above that the stent is substantially completely occupied at the position corresponding to the blood vessel after the stent is expanded, and only the blood vessel near the stent can be operated, but the blood vessel at the stent cannot be operated at all.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a cardiovascular expansion support disperses through the expansion board and realizes cardiovascular expansion, and the normal circulation of blood when both having guaranteed the expansion can also be operated the operation to the blood vessel of expansion support department.
The utility model provides a technical scheme does:
a cardiovascular expansion stent comprising:
the guide pipe is internally provided with a channel in a penetrating way, and one end of the guide pipe is closed; and
at least one expansion frame, it evenly sets up on the stand, be used for expanding the blood vessel, it includes:
the fixed ring is annular, is coaxially and fixedly sleeved on the guide pipe, and is internally and uniformly provided with electromagnetic coils;
the sliding ring is annular and is coaxially sleeved on the guide pipe in a sliding manner;
the fixed ring is an electromagnet, and the sliding ring is a permanent magnet;
the return spring is coaxially sleeved on the guide pipe between the fixed ring and the sliding ring;
the first support rods are uniformly arranged along the circumferential direction of the fixed ring, and one ends of the first support rods are respectively hinged with the fixed ring;
the second support rods are arranged in one-to-one correspondence with the first support rods, one ends of the second support rods are respectively hinged with the sliding ring, and the other ends of the second support rods are hinged with the other ends of the first support rods;
the expansion plates are of cambered surface structures, are perpendicular to the planes of the first supporting rod and the second supporting rod, and are hinged to one point corresponding to the first supporting rod and the second supporting rod respectively;
and in the initial state, the reset spring has no elastic deformation, and the expansion plates are mutually contacted and enclose a hollow cylindrical structure.
Preferably, the expansion frame further comprises:
the limiting ring is annular, is coaxially and fixedly sleeved on the guide pipe positioned on the outer side of the sliding ring in a sleeved mode, and is used for limiting the sliding ring;
when the reset spring has no elastic deformation, the sliding ring is contacted with the limiting ring.
Preferably, the method further comprises the following steps:
the first guiding-in head is in a circular truncated cone shape and is coaxially and fixedly arranged at one closed end of the guide pipe;
the second leading-in head is in a circular truncated cone shape and is coaxially and fixedly arranged at the other end of the guide pipe, and a through hole is formed in the center of the second leading-in head and is communicated with the inner channel of the guide pipe;
the outer end faces of the first leading-in head and the second leading-in head are cambered surfaces.
Preferably, the method further comprises the following steps:
the lead wire penetrates through the through hole to enter the inner channel of the guide tube and is connected with the electromagnetic coil;
and the external power supply is connected with the lead and is used for supplying power to the electromagnetic coil.
Preferably, the supporting plates are uniformly provided with through holes, and an elastic net surface is connected between the adjacent supporting plates.
Preferably, the number of the expansion frames is 2, and the expansion frames are symmetrically arranged on two axial sides of the guide pipe.
Preferably, in each expansion frame, the number of the expansion plates is 5, and the length of each expansion plate is 4-5 mm.
Preferably, the first supporting rod and the second supporting rod are consistent in structure, and the length of the first supporting rod and the length of the second supporting rod are 1.5-2.5 mm.
Preferably, in each expansion frame, the distance between the fixed ring and the sliding ring is 1-4 mm.
Preferably, the distance between the expansion frames is 8-12 mm.
Beneficial effect:
the utility model provides a cardiovascular expansion support disperses through the expansion board and realizes cardiovascular expansion, and the normal circulation of blood when both having guaranteed the expansion can also be operated the operation to the blood vessel of expansion support department.
Drawings
Fig. 1 is a schematic structural diagram of the cardiovascular expansion stent of the present invention.
Fig. 2 is a schematic structural view of the cardiovascular expansion stent of the present invention.
Fig. 3 is a schematic structural diagram of the cardiovascular expansion stent of the present invention.
Fig. 4 is a schematic structural diagram of the cardiovascular expansion stent of the present invention.
Fig. 5 is a schematic view of a partial structure of the expansion frame of the present invention.
Fig. 6 is a schematic view of a partial structure of the expansion frame of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.
The present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein but rather as being provided for the purpose of providing a thorough and complete disclosure. In the drawings, the size and relative sizes of structures and regions may be exaggerated for clarity.
As shown in fig. 1-6, the present invention provides a cardiovascular expansion stent, comprising: a guide tube 100 having a passage formed therethrough and one end closed; at least one expansion frame 110 is uniformly arranged on the guide tube 100 along the axial direction of the guide tube 100 for expanding the blood vessel.
The expansion frame 110 includes a fixing ring 111, which is annular and coaxially fixed on the guide tube 100, and inside which electromagnetic coils (not shown in the figure) are uniformly arranged; a sliding ring 112 is coaxially and slidably provided on the guide tube at a distance from the fixed ring 111. The fixed ring 111 is an electromagnet, and the sliding ring 112 is a permanent magnet; by energizing the electromagnetic coil, the stationary ring 111 is made magnetic, so that the slide ring 112 and the stationary ring 111 are attracted to each other. It should be noted that, the electromagnetic coil may also be uniformly disposed in the sliding ring 112, and the sliding ring 112 is an electromagnet, and the fixed ring 111 is a permanent magnet, and by energizing the electromagnetic coil, the sliding ring 112 has magnetism, and the sliding ring 112 and the fixed ring 111 attract each other to be close to, which is also the protection scope of the present invention.
The guide tube 100 between the fixed ring 111 and the sliding ring 112 is coaxially sleeved with a return spring 113, and in an initial state, the return spring 113 has no elastic deformation and two ends are in contact with the fixed ring 111 and the sliding ring 112. When the blood vessel needs to be expanded, the electromagnetic coil is electrified, and the return spring 113 is compressed when the fixed ring 111 and the sliding ring 112 are attracted and contacted with each other; when it is not necessary to expand the blood vessel, the electromagnetic coil is turned off, and even though the stationary ring 111 still remains weakly magnetic, the magnetic attraction force between the stationary ring 111 and the sliding ring 112 is smaller than the restoring force of the return spring 113, and the sliding ring 112 is restored to its original position by the restoring force of the return spring 113.
A limit ring 114 is fixedly sleeved on the guide tube 100 close to the outer side of the sliding ring 113, and is in a circular ring shape, and in an initial state of the return spring 113, the sliding ring 112 is in contact with the limit ring 114 to limit the sliding ring 112, so that the return position of the sliding ring 112 is prevented from exceeding the initial position under the action of the return force of the return spring 113.
In the initial state, the return spring 113 has no elastic deformation, the fixed ring 111 and the sliding ring 112 are at the maximum distance, and the expansion plates are in contact with each other and enclose a hollow cylindrical structure. When the electromagnetic wire in the fixing ring 111 is electrified, the fixing ring 111 has magnetism, and the sliding ring 112 and the fixing ring 111 attract each other to be close to each other, so that the first supporting rod 115 and the second supporting rod 116 hinged with the fixing ring are supported and spread out corresponding to the expansion plate 117 to form a hollow cylindrical structure with a larger outer diameter, and the expansion of the blood vessel is realized. After use, the electromagnetic coil is powered off, the sliding ring 112 returns to the original position under the action of the restoring force of the return spring 113, and the expansion plate 117 is retracted.
A first introduction head 120, which is in a truncated cone shape, is coaxially and fixedly provided at the closed end of the guide tube 100. A second guide-in head 130 is coaxially and fixedly arranged at the other end of the guide tube 100, is in a shape of a circular truncated cone, and is provided with a through hole 131 at the center and communicated with the inner channel of the guide tube 100; the outer end surfaces of the first leading-in head 120 and the second leading-in head 130 are cambered surfaces, which is convenient for leading in and leading out the guide tube 100, so that the friction between the two sides of the guide tube 100 and the inner wall of the blood vessel is reduced, and the damage to the inner wall of the blood vessel is reduced.
In this embodiment, the method further includes: a lead wire 140 which enters the inner passage of the guide tube 100 through the through hole 131 and is connected to the electromagnetic coil; an external power source (not shown) is connected to the leads 140 for powering the solenoid.
In this embodiment, the expansion frame 110 be 2, and the symmetry sets up in the 100 axial both sides of stand pipe, and the interval between the expansion frame is 8 ~ 12 mm. In each expansion frame 110, the number of expansion plates 117 is 5, and the length of the expansion plates 117 is 4-5 mm. The structure of first bracing piece 115 and second bracing piece 116 unanimous, and the length of first bracing piece and second bracing piece is 1.5 ~ 2.5 mm. In each expansion frame 110, the distance between the fixed ring 111 and the sliding ring 112 is 1-4 mm.
The utility model provides a cardiovascular expansion support disperses through the expansion board and realizes cardiovascular expansion, and the normal circulation of blood when both having guaranteed the expansion can also be operated the operation to the blood vessel of expansion support department.
While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.
Claims (10)
1. A cardiovascular expansion stent, comprising:
the guide pipe is internally provided with a channel in a penetrating way, and one end of the guide pipe is closed; and
at least one expansion frame, it evenly sets up on the stand, be used for expanding the blood vessel, it includes:
the fixed ring is annular, is coaxially and fixedly sleeved on the guide pipe, and is internally and uniformly provided with electromagnetic coils;
the sliding ring is annular and is coaxially sleeved on the guide pipe in a sliding manner;
the fixed ring is an electromagnet, and the sliding ring is a permanent magnet;
the return spring is coaxially sleeved on the guide pipe between the fixed ring and the sliding ring;
the first support rods are uniformly arranged along the circumferential direction of the fixed ring, and one ends of the first support rods are respectively hinged with the fixed ring;
the second support rods are arranged in one-to-one correspondence with the first support rods, one ends of the second support rods are respectively hinged with the sliding ring, and the other ends of the second support rods are hinged with the other ends of the first support rods;
the expansion plates are of cambered surface structures, are perpendicular to the planes of the first supporting rod and the second supporting rod, and are hinged to one point corresponding to the first supporting rod and the second supporting rod respectively;
and in the initial state, the reset spring has no elastic deformation, and the expansion plates are mutually contacted and enclose a hollow cylindrical structure.
2. The cardiovascular expansion stent of claim 1, wherein the expansion stent further comprises:
the limiting ring is annular, is coaxially and fixedly sleeved on the guide pipe positioned on the outer side of the sliding ring in a sleeved mode, and is used for limiting the sliding ring;
when the reset spring has no elastic deformation, the sliding ring is contacted with the limiting ring.
3. The cardiovascular expansion stent of claim 1, further comprising:
the first guiding-in head is in a circular truncated cone shape and is coaxially and fixedly arranged at one closed end of the guide pipe;
the second leading-in head is in a circular truncated cone shape and is coaxially and fixedly arranged at the other end of the guide pipe, and a through hole is formed in the center of the second leading-in head and is communicated with the inner channel of the guide pipe;
the outer end faces of the first leading-in head and the second leading-in head are cambered surfaces.
4. The cardiovascular expansion stent of claim 3, further comprising:
the lead wire penetrates through the through hole to enter the inner channel of the guide tube and is connected with the electromagnetic coil;
and the external power supply is connected with the lead and is used for supplying power to the electromagnetic coil.
5. The cardiovascular expansion stent of claim 1, wherein the expansion plates are uniformly provided with through holes, and an elastic mesh surface is connected between adjacent expansion plates.
6. The cardiovascular expansion stent of claim 1, wherein the expansion stent is 2 in number and symmetrically arranged on both axial sides of the guide tube.
7. The cardiovascular expansion stent of claim 1, wherein in each expansion stent, the number of expansion plates is 5, and the length of the expansion plates is 4-5 mm.
8. The cardiovascular expansion stent of claim 1, wherein the first and second struts are structurally identical and have a length of 1.5 to 2.5 mm.
9. The cardiovascular expansion stent of claim 1, wherein the spacing between the fixed ring and the sliding ring in each expansion stent is 1-4 mm.
10. The cardiovascular expansion stent of claim 1, wherein the spacing between expansion stents is 8-12 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021645497.XU CN213910721U (en) | 2020-08-10 | 2020-08-10 | Cardiovascular expansion stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021645497.XU CN213910721U (en) | 2020-08-10 | 2020-08-10 | Cardiovascular expansion stent |
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| Publication Number | Publication Date |
|---|---|
| CN213910721U true CN213910721U (en) | 2021-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021645497.XU Active CN213910721U (en) | 2020-08-10 | 2020-08-10 | Cardiovascular expansion stent |
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| CN (1) | CN213910721U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115317769A (en) * | 2022-09-19 | 2022-11-11 | 李冬冬 | Cardiovascular dilator |
| CN116616972A (en) * | 2023-07-24 | 2023-08-22 | 深圳市飞梵实业有限公司 | Tracheal stent shifter |
-
2020
- 2020-08-10 CN CN202021645497.XU patent/CN213910721U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115317769A (en) * | 2022-09-19 | 2022-11-11 | 李冬冬 | Cardiovascular dilator |
| CN115317769B (en) * | 2022-09-19 | 2024-03-12 | 李冬冬 | Cardiovascular expander |
| CN116616972A (en) * | 2023-07-24 | 2023-08-22 | 深圳市飞梵实业有限公司 | Tracheal stent shifter |
| CN116616972B (en) * | 2023-07-24 | 2023-10-24 | 深圳市飞梵实业有限公司 | Tracheal stent shifter |
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