CN212466260U

CN212466260U - Aneurysm treatment device

Info

Publication number: CN212466260U
Application number: CN202020214958.1U
Authority: CN
Inventors: 李彬彬; 吕纬岩; 孙剑; 余均武; 张尧; 李剑博; 王磊
Original assignee: Beijing Jiushi Shenkang Medical Technology Co ltd
Current assignee: Beijing Jiushi Shenkang Medical Technology Co ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2021-02-05
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses an aneurysm treatment device, which comprises an introducing sheath and a pushing guide wire, wherein a main body bracket and a modular bracket are sequentially contracted in the introducing sheath, and the pushing guide wire is arranged in the modular bracket in a penetrating way and is connected with the main body bracket so as to push the main body bracket to enter a lesion blood vessel to position an aneurysm neck; and a modular support recovery pad is fixed on the pushing guide wire, is positioned in the modular support and is used for pushing and recovering the modular support. Compared with the treatment mode of the stent auxiliary spring ring, the occupation effect is avoided and the cost is saved; compared with the blood flow guiding device, the risk of branch occlusion and the risk of delayed rupture of the aneurysm are reduced, the cure rate is improved, the cure time is shortened, the risk that the blood flow guiding device falls into the aneurysm due to insufficient anchoring sections is avoided, and the operation difficulty is reduced; the stent graft has stronger blood vessel adaptation capability compared with a stent graft, and reduces the risk of branch occlusion while achieving the same effect as the stent graft.

Description

Aneurysm treatment device

Technical Field

The utility model relates to the field of medical treatment, concretely relates to aneurysm treatment device.

Background

At present, a plurality of devices for treating intracranial aneurysms exist, but the devices have defects. The stent-assisted coil has low cure rate, more complications and space occupying effect when used for treating the aneurysm; the blood flow guiding device is easy to cause branch occlusion when treating the aneurysm, the aneurysm has the risk of delayed rupture and the cure period is long, and meanwhile, if the aneurysm is a jet disease aneurysm, the metal coverage rate of the blood flow guiding device is further reduced, thereby affecting the treatment effect; the requirement of the covered stent for treating the aneurysm on the condition of the blood vessel is severe, if branches exist, 100 percent of the branches can be blocked, and the compliance of the covered stent is poor.

Therefore, the utility model provides an aneurysm treatment device solves the technical problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model discloses the technical problem that the occupation effect that exists, cure rate are low and cause the block branch easily is solved to the prior art.

(II) technical scheme

The utility model provides an aneurysm treatment device, which comprises a guiding sheath and a pushing guide wire, wherein a main body bracket and a modular bracket are sequentially contracted in the guiding sheath, and the pushing guide wire is arranged in the modular bracket in a penetrating way and is connected with the main body bracket so as to push the main body bracket to enter a lesion blood vessel to position an aneurysm neck; a modular support recovery pad and a modular support pushing block are fixed on the pushing guide wire, the modular support recovery pad is located in the modular support, and the modular support pushing block is located outside the proximal end of the modular support.

Further, propelling movement seal wire distal end is equipped with withdrawal piece, main part support propelling movement piece A and spring A in proper order, main part support near-end is equipped with the screens piece, the screens piece card is established withdrawal piece with between the main part support propelling movement piece A.

Further, be fixed with main part support on the propelling movement seal wire and retrieve the pad, main part support is retrieved and is filled up and be located in the main part support, be equipped with main part support propelling movement piece B on the propelling movement seal wire, main part support propelling movement piece B is located outside the main part support near-end, propelling movement seal wire distal end is equipped with spring B.

Further, the propelling movement seal wire with main part support fixed connection, the junction has the electrolysis point, and the position that the propelling movement seal wire distal end is close to the electrolysis point is equipped with spring C.

Furthermore, the modular support recycling pad and the main support recycling pad are made of silica gel or polytetrafluoroethylene.

Further, the number of the modular supports is 1 or more, and the modular supports are woven dense-mesh supports.

Further, the main body support is a woven large mesh support.

Furthermore, the main body support is a large mesh cutting support, and a positioning mark is arranged on the main body support.

Further, the material of the spring A, the spring B or the spring C is radiopaque.

Further, the modular stent pushing block or the main stent pushing block a or the main stent pushing block B is made of a radiopaque material.

Furthermore, the main body support pushing block A is a main body support complete release mark, and the clamping block is a main body support near-end mark.

Further, the main body support pushing block B is a main body support complete release mark and a modular support to-be-released mark.

Further, the module support pushing block is a module support complete release mark.

Further, the withdrawing block and the main body support pushing block A are both provided with developing marks.

(III) advantageous effects

The above technical scheme of the utility model has following advantage:

in the aneurysm treatment device provided by the utility model, the leading-in sheath is sequentially contracted with the main body support and the modular support, the pushing guide wire is arranged in the modular support in a penetrating way and is connected with the main body support so as to push the main body support to enter the position of the aneurysm neck for positioning blood vessels, the position of the aneurysm neck opening is well positioned by the main body support, and preparation is made for the modular support to seal the aneurysm neck opening; be fixed with modular support on the propelling movement seal wire and retrieve pad and modular support propelling movement piece, modular support retrieves and fills up and be located modular support, and modular support propelling movement piece is located modular support near-end outside to propelling movement modular support to aneurysm neck, modular support is the polylith, each aneurysm neck of sealing that can be accurate improves the cure rate, does not produce the block branch, still practices thrift the cost simultaneously.

The technical proposal provided by the utility model avoids the occupation effect and saves the cost compared with the treatment mode of the support auxiliary spring ring; compared with the blood flow guiding device, the risk of branch occlusion and the risk of delayed rupture of the aneurysm are reduced, the cure rate is improved, the cure time is shortened, and meanwhile, the risk that the blood flow guiding device falls into the aneurysm due to the insufficient anchoring section is avoided; the stent graft has stronger blood vessel adaptation capability compared with a stent graft, and reduces the risk of branch occlusion while achieving the same effect as the stent graft.

Drawings

FIG. 1 is a schematic diagram of the design of the aneurysm treatment device of the present invention;

FIG. 2 is a schematic view of another embodiment of the aneurysm treatment device of the present invention;

FIG. 3 is a schematic view of another embodiment of the aneurysm treatment device of the present invention;

FIG. 4 is a schematic view of the aneurysm treatment device of the present invention after release in vitro;

FIG. 5 is another schematic view of the aneurysm treatment device of the present invention after release in vitro;

FIG. 6 is a schematic illustration of the aneurysm treatment device of the present invention after release in vivo;

fig. 7 is another schematic view of the aneurysm treatment device of the present invention after in vivo release.

In the figure: 1. introducing a sheath; 2. a main body support; 3. a module support; 4. a modular support retrieval mat; 5. a modular support pusher block; 6. pushing the guide wire; 7. a retraction block; 8. a bit block; 9. a main body support pushing block A; 10. a spring A; 11. a main body support recovery pad; 12. a main body support pushing block B; 13. a spring B; 14. an electrolysis trip point; 15. a spring C; 16. positioning the mark; 17. a main body support far-end identification; 18. an aneurysm.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description, it should be understood that the terms "distal" and "proximal" in the context should be understood as referring to the side of the operator, the "distal" being the side away from the operator and the "proximal" being the side close to the operator.

The utility model provides an aneurysm treatment device, which comprises an introducing sheath 1 and a pushing guide wire 6, wherein a main body bracket 2 and a modular bracket 3 are sequentially contracted in the introducing sheath 1, and the pushing guide wire 6 is arranged in the modular bracket 3 in a penetrating way and is connected with the main body bracket 2 so as to push the main body bracket 2 to enter a lesion blood vessel to position an aneurysm neck; be fixed with modular support on the propelling movement seal wire 6 and retrieve pad 4 and modular support propelling movement piece 5, modular support retrieves pad 4 and is located modular support 3, and modular support propelling movement piece 5 is located modular support 3 near-end outward to guarantee the release and the recovery of propelling movement modular support 3.

In the above embodiments, before use, the aneurysm embolization device (i.e., the aneurysm treatment device of the present invention) is removed from the coil, and the aneurysm treatment device is prepared for pre-operative flushing. The far end of an introducing sheath 1 is butted with a micro catheter, a pushing guide wire 6 is pushed forwards to drive a main body support 2 to enter the micro catheter, meanwhile, a modular support recovery pad 4 generates forward driving force on a modular support 3, the pipe wall of the introducing sheath 1 generates backward resistance on the modular support 3, but the driving force is greater than the resistance, so that the modular support 3 is pushed into the micro catheter by the modular support recovery pad 4, and in order to prevent the driving force from being smaller than the resistance, a modular support pushing block 5 is arranged outside the near end of the modular support 3; meanwhile, when the module support 3 needs to be retracted, the push guide wire 6 can be directly retracted. The main body support 2 enters a diseased blood vessel from a microcatheter and is released in situ in the blood vessel, the main body support 2 is used as a framework in the blood vessel and positions the position of an aneurysm neck, when the main body support 2 is completely released, the modular support 3 is about to be released at the moment, the modular support 3 is completely released in the main body support 2 through a push-pull technology, and the modular support 3 seals the neck of the aneurysm so as to achieve the purpose of healing.

The device adopts modular structure, occupation effect has been avoided for the treatment mode of support auxiliary spring circle, the cost is saved, simultaneously for blood flow guider, the risk of branch's blocking and aneurysm delay rupture has been reduced, avoided blood flow guider to fall into the intratumoral risk because of the anchoring section is not enough, the cure rate has been improved and the cure time has been shortened, simultaneously compare the adaptability stronger with tectorial membrane support adaptation vascular ability, when reaching the same effect with tectorial membrane support, the risk of blocking branch has been reduced.

Preferably, the far end of the pushing guide wire 6 is sequentially provided with a withdrawing block 7, a main body bracket pushing block A9 and a spring A10, the near end of the main body bracket 2 is provided with a clamping block 8, the clamping block 8 is clamped between the withdrawing block 7 and the main body bracket pushing block A9, and the withdrawing block 7 and the main body bracket pushing block A9 are fixed on the pushing guide wire 6 through the spring A10. As shown in FIG. 1, when the pushing guide wire 6 and/or the retracting microcatheter are pushed forward, the main body stent pushing block A9 will contact with the position-locking block 8, so as to push the main body stent 2 to advance through the main body stent pushing block A9, and during the releasing process of the main body stent 2, before the retracting block 7 exits the microcatheter, the retracting block 7 can contact with the position-locking block 8 through pulling back the pushing guide wire 6, so as to drive the main body stent 2 to retract. The micro-catheter with the clamping block 8 is released, which means that the clamping block 8 is released from the limit of the retracting block 7 and the main body support pushing block A9, and the main body support 2 and the pushing guide wire 6 are separated mechanically. One end of the spring A10 is connected with the main body support pushing block A9, the other end of the spring A10 is connected with the pushing guide wire 6, when the pushing guide wire 6 is pushed forwards, the spring A buffers the pushing force of the pushing guide wire 6, and the impact on the blood vessel wall is reduced.

Preferably, the distal end of the pushing guide wire 6 is fixed with a main body support recycling pad 11, the main body support recycling pad 11 is located in the main body support 2, a main body support pushing block B12 is fixed on the pushing guide wire 6, the main body support pushing block B12 is located outside the proximal end of the main body support 2, the distal end of the pushing guide wire 6 is provided with a spring B13, and the spring B13 can be connected to the farthest end of the pushing guide wire, namely located at the distal end of the main body support 2. As shown in fig. 2, the pushing of the push wire 6 causes the main body stent retrieval pad 11 and the main body stent 2 to generate forward power, and the introducing sheath 1 generates backward resistance to the main body stent 2, and when the power is greater than the resistance, the main body stent 2 moves forward, and when the power is less than the resistance, the main body stent pushing block B12 pushes the main body stent 2 forward by the pushing force of the push wire 6. Before the main body support recycling pad 11 is out of the micro-catheter, the push guide wire 6 can be pulled back, and the main body support 2 is recycled by the power generated by the main body support recycling pad 11 on the main body support 2. When the main body stent pusher block B12 exits the microcatheter, the connection between the main body stent 2 and the push wire 6 is released by releasing the main body stent 2, and the main body stent 2 and the push wire 6 are mechanically separated from each other. The modular support recycling pad 4 and the main support recycling pad 11 may be made of polymer materials such as silica gel, polytetrafluoroethylene and the like.

Specifically, the pushing guide wire 6 is fixedly connected with the main body bracket 2, an electrolytic release point 14 is arranged at the joint, and a spring C15 is arranged at the position, close to the electrolytic release point 14, of the distal end of the pushing guide wire 6. As shown in FIG. 3, spring C15 has one end connected to electrolytic detachment point 14 and the other end connected to the distal end of the pusher wire. Propelling movement seal wire 6 passes through spring C15 and main part support 2 fixed connection, and preceding propelling movement seal wire 6 impels main part support 2 forward, after main part support 2 releases completely, adopts the electrolysis to take off the separation mode, breaks apart electrolysis trip 14, and spring C15 produces reaction force when propelling movement before the propelling movement seal wire, reduces the impact to the vascular wall.

Specifically, the number of the module supports 3 is 1 or more, and the module supports 3 are woven dense-mesh supports. As shown in fig. 5 and 7, in order to avoid the space occupying effect, the modular stents 3 are multiple, so that the neck of the aneurysm can be accurately sealed, the cure rate is improved, and the cost is saved.

Specifically, the main body stent 2 is a woven large mesh stent. When the main body stent is woven and formed by using the braided wire, the braided wire is provided with 2 or 2n (n is a positive integer) threads made of radiopaque materials.

Specifically, the main body support 2 is a large mesh cutting support, the main body support 2 is provided with positioning marks 16, and when laser cutting is adopted for forming, the main body support 2 is provided with the positioning marks 16 in sections.

Specifically, the modular stent pusher blocks 5, main body stent pusher block a9, and main body stent pusher block B12 are radiopaque materials, such as platinum tungsten, platinum iridium, and the like.

Specifically, the main body support pushing block a9 is a complete release identifier of the main body support 2, and the clipping block 8 is a proximal identifier of the main body support 2. When body support pusher block A9 exits the microcatheter, indicating that body support 2 is fully released, module support 3 is about to begin releasing. The position clamping block 8 is also used for marking the near end of the main body support 2 and positioning the position of the main body support 2 in the blood vessel under the combined action of the main body support far end mark 17.

Specifically, body support push block B12 identifies a body support full release and an impending release of module support 3. When body support pusher block B12 exits the microcatheter, indicating that body support 2 is fully released, module support 3 is about to begin releasing.

Specifically, module support push block 5 identifies a complete release of module support 3. When module support pusher block 5 exits the microcatheter, it indicates that module support 3 is fully released.

Specifically, the retraction block 7 and the main body stent pushing block a9 are both provided with a visualization mark, and the positions of the retraction block 7 and the main body stent pushing block a9 in the blood vessel body can be clearly known.

Specifically, the spring a10, the spring B13 and the spring C15 are made of radiopaque materials, such as platinum tungsten, platinum iridium and the like, so that the impact of the push guide wire 6 on the vessel wall is reduced, and the position of the push guide wire 6 in the vessel is prompted.

Specifically, as shown in fig. 4, the main body support 2 is integrally tubular, and the tube wall is designed as a large mesh. Main support 2 adopts laser cutting shaping or weaving shaping, when adopting laser cutting shaping, main support 2 segmentation is equipped with location sign 16, as shown in fig. 6 and fig. 7, main support 2's location sign 16 strides the tumor neck of aneurysm 18, main support 2 releases the back in the blood vessel, modular support 3 gets into in main support 2 and arrives aneurysm neck mouth position, modular support 3 distal end and near-end just in time and main support 2 stride the coincidence of location sign 16 of aneurysm neck, the adherence condition of contrast observation main support 2 and modular support 3, modular support 3 seals aneurysm neck mouth, in order to reach the treatment purpose. The number of the modular supports 3 is 1 or more, so that the neck of the aneurysm can be accurately and pertinently closed, the crossing occlusion is avoided, the cure rate is improved, and the cost is saved. The main body stent is formed by laser cutting, and a platinum tungsten wire or a wire thread made of other radiopaque materials is wound on the whole body. When the main body stent is woven and formed by using the braided wire, the braided wire is provided with 2 or 2n (n is a positive integer) threads made of radiopaque materials.

Specifically, modular stent 3 is woven into a tubular structure from wires that are comprised of radiopaque and other metal wires.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An aneurysm treatment device is characterized by comprising an introduction sheath (1) and a pushing guide wire (6), wherein a main body support (2) and a modular support (3) are sequentially contracted in the introduction sheath (1), and the pushing guide wire (6) penetrates through the modular support (3) and is connected with the main body support (2) so as to push the main body support (2) to enter a diseased blood vessel to position an aneurysm neck; be fixed with modular support on propelling movement seal wire (6) and retrieve pad (4) and modular support propelling movement piece (5), modular support retrieves pad (4) and is located modular support (3), modular support propelling movement piece (5) are located outside modular support (3) near-end.

2. The aneurysm treatment device according to claim 1, wherein the distal end of the push guide wire (6) is provided with a retraction block (7), a main body stent push block A (9) and a spring A (10) in sequence, the proximal end of the main body stent (2) is provided with a clamping block (8), and the clamping block (8) is clamped between the retraction block (7) and the main body stent push block A (9).

3. The aneurysm treatment device according to claim 2, wherein a main body stent retrieval pad (11) is fixed on the push guidewire (6), the main body stent retrieval pad (11) is located inside the main body stent (2), a main body stent pushing block B (12) is arranged on the push guidewire (6), the main body stent pushing block B (12) is located outside the proximal end of the main body stent (2), and a spring B (13) is arranged at the distal end of the push guidewire (6).

4. The aneurysm treatment device according to claim 3, wherein the push guide wire (6) is fixedly connected with the main body stent (2), an electrolysis point (14) is arranged at the connection position, and a spring C (15) is arranged at the position of the far end of the push guide wire (6) close to the electrolysis point (14).

5. Aneurysm treatment device according to any of claims 1-4, wherein the modular stent retrieval pad (4), the main stent retrieval pad (11) is made of silica gel or polytetrafluoroethylene.

6. Aneurysm treatment device according to any of claims 1-4, wherein the number of modular stents (3) is 1 or more and the modular stents (3) are woven dense mesh stents.

7. Aneurysm treatment device according to any of claims 1-4, wherein the main body stent (2) is a woven macro-mesh stent.

8. Aneurysm treatment device according to any of claims 1-4, wherein the main body stent (2) is a cut-out large mesh stent and the main body stent (2) is provided with positioning markers (16).

9. Aneurysm treatment device according to claim 4, wherein the spring A (10) or the spring B (13) or the spring C (15) is made of a radiopaque material.

10. The aneurysm treatment device of any of claims 1-4, wherein the modular stent pusher block (5) or the main stent pusher block A (9) or the main stent pusher block B (12) is made of radiopaque material.

11. The aneurysm treatment device according to claim 2, wherein the main stent pushing block a (9) is a main stent full release indicator, and the capture block (8) is a main stent proximal indicator; the withdrawing block (7) and the main body support pushing block A (9) are provided with developing marks.

12. The aneurysm treatment device according to claim 3, wherein the main body stent pusher block B (12) is a main body stent full release indicator and a modular stent (3) immediate release indicator.

13. Aneurysm treatment device according to claim 1, wherein the modular stent pusher block (5) is a modular stent (3) full release indication.