CN216221554U

CN216221554U - Electrolysis blood flow guiding device

Info

Publication number: CN216221554U
Application number: CN202122721076.1U
Authority: CN
Inventors: 王德军; 吕露
Original assignee: B Braun Medical Suzhou Co Ltd
Current assignee: B Braun Medical Suzhou Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-08
Anticipated expiration: 2031-11-08

Abstract

The utility model relates to an electrolytic hemorrhage flow guiding device, which is connected with an electrolytic hemorrhage flow guiding circuit and comprises: a support member having an accommodating chamber; the guide piece is arranged in the accommodating cavity; the pushing piece is connected with the guide piece at least in part so as to push the guide piece to move relative to the support piece; and the connecting piece is connected with the pushing piece and the guide piece, the pushing piece pushes the supporting piece to reach a target position, and the connecting piece is electrically dissolved under the action of the electrolytic release circuit, so that the guide piece and the pushing piece are separated, and the treatment of the aneurysm is realized. The separation of impeller and guide piece is carried out to the mode of using the electrolysis to take off, and it does not have too high requirement to user's skill, and takes off stability well to improve and know and take off efficiency, and then improve the treatment effeciency to the aneurysm.

Description

Electrolysis blood flow guiding device

Technical Field

The utility model relates to an electrolytic hemorrhage flow guiding device.

Background

At present, a plurality of devices for treating intracranial aneurysms exist, but the devices have defects. The existing blood flow guiding device is implemented by adopting a mechanical releasing mode, and due to the complex structure, multiple components, difficult processing and the like of a product, the releasing stability is not high, and the risk that the guiding part is difficult to release or even fails to release in a blood vessel exists. Furthermore, the mechanical release requires a high level of skill on the part of the user and also poses risks to the patient.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electrolytic hemorrhage removal guiding device which is simple in overall structure, good in detachment stability of a guiding piece and capable of improving detachment efficiency.

In order to achieve the purpose, the utility model provides the following technical scheme: an electrolytic hemorrhage flow guiding device connected with an electrolytic hemorrhage circuit, comprising:

a support member having an accommodating chamber;

the guide piece is arranged in the accommodating cavity;

a pushing part, at least part of which is connected with the guide part to push the guide part to move relative to the support part; and

the connecting piece is connected with the pushing piece and the guide piece, the pushing piece pushes the supporting piece to reach a target position, and the connecting piece is electrically dissolved under the action of the electrolytic stripping circuit so that the guide piece and the pushing piece are separated.

Further, the connecting piece comprises a connecting body for connecting the pushing piece and the guide piece and an adsorption body arranged on the outer side of the connecting body.

Further, the absorbent body is provided as a hydrogel coating.

Further, the connector is helical.

Furthermore, the connecting piece is made of active metal with biocompatibility and can be corroded and broken under the action of the electrolytic trip circuit.

Further, the metal is magnesium or zinc or iron.

Further, the pushing piece further comprises a pushing part and a mandrel, wherein the pushing part is connected with the connecting piece, the pushing part is provided with a cavity, and at least part of the mandrel is arranged in the cavity.

Further, at least one marking point is arranged on the mandrel.

Further, the inner wall of the support member is a smooth inner wall, or the inner wall of the support member is provided with a smooth layer.

Further, the guide piece is a self-expanding metal braided stent, and the stent is made of nickel-titanium alloy, cobalt-chromium alloy or platinum-iridium alloy.

The utility model has the beneficial effects that: the connecting piece is connected with the pushing piece and the guide piece, the pushing piece pushes the supporting piece to reach a target position under the action of external force, the connecting piece is electrically dissolved under the action of the electrolytic release circuit, so that the guide piece and the pushing piece are separated, the guide piece is released, and the treatment of the aneurysm is realized. The separation of impeller and guide piece is carried out to the mode of using the electrolysis to take off, and it does not have too high requirement to user's skill, and takes off stability well to improve and know and take off efficiency, and then improve the treatment effeciency to the aneurysm.

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.

Drawings

FIG. 1 is a schematic view of the construction of an electrolytic hemorrhage inducing device according to the present invention;

FIG. 2 is a schematic release diagram of the guide of the electrolytic hemorrhage flow guiding device shown in FIG. 1;

fig. 3 is a partial schematic structural view of the electrolytic hemorrhage flow guiding device shown in fig. 1.

Detailed Description

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

Referring to fig. 1 to 3, an electrolytic hemorrhage guiding device 100 according to a preferred embodiment of the present invention is connected to an external electrolytic hemorrhage circuit to treat patients with aneurysms. The guide device 100 includes a support 1 having a housing chamber 11, a guide 2 disposed in the housing chamber 11, a pushing member 3 pushing the guide 2 to move relative to the support 1, and a connecting member 4 connecting the pushing member 3 and the guide 2. Wherein at least part of the pusher 3 is connected to the guide 2 to push the guide 2 to move relative to the support 1. The support member 1 is used for establishing a blood vessel access, when a user treats an aneurysm of a patient, the support member 1 is inserted into the blood vessel, the pushing member 3 pushes the guide member 2 to move relative to the support member 1 under the action of external force until the guide member 2 reaches a target position, the connecting member 4 is electrically dissolved under the action of an electrolytic trip circuit so as to separate the guide member 2 from the pushing member 3, and the separated guide member 2 enters the blood vessel and covers the aneurysm, so that the aneurysm is treated.

Specifically, the support member 1 is made of a composite material of a metal wire and a polymer, and the inner wall of the support member 1 is a smooth inner wall, or the inner wall of the support member 1 is provided with a smooth layer, so that the guide member 2 moves in the accommodating cavity 11 of the support member 1. The smooth layer may be a lubricant layer directly coated on the inner wall of the support 1, or may be a member separately disposed on the inner wall of the support 1 and having a lubricating effect.

In this embodiment, the guide 2 is a self-expandable metal braided stent made of nickel-titanium alloy, cobalt-chromium alloy, or platinum-iridium alloy. The stent is an annular dense-mesh structure formed by a plurality of weaving wires, and the intersection pitch of the weaving wires of the dense-mesh structure is smaller, so that the stent not only has good support performance on blood vessels, but also has good blood flow guiding performance. When the guide part 2 enters the blood vessel to reach the target position, the guide part 2 is separated from the pushing part 3, the guide part 2 covers the aneurysm to change the direction of blood flow, the impact of the blood flow on the wall of the aneurysm is reduced, and finally the aneurysm is healed. It should be noted that changing the direction of blood flow means that the blood flow in the blood vessel that originally flowed through the aneurysm wall flows along the inner wall of the guide member 2. In this embodiment, the number of the braided wires forming the dense mesh structure of the guide member 2 may be 48, 64, 98, 124, 144, or the like. The number of the knitting yarns is not specifically limited, and is determined according to the actual situation.

The pushing member 3 includes a pushing portion 31 disposed in the accommodating chamber 11, and the pushing portion 31 is connected to the guide 2, and pushes the guide 2 to move relative to the support 1 by pushing the pushing portion 31.

Specifically, the pushing portion 31 is made of metal or polymer material. An anode conductive structure and a cathode conductive structure connected to the electrolytic desorption circuit are provided in the pushing portion 31. The electrolytic stripping circuit includes an insulator to insulate the anode conductive structure from the cathode conductive structure within the cavity 311 of the push portion 31 and a conductor. When the support 1 is moved to the target position in the blood vessel, the guide 2 is separated from the pushing member 3 by the electrolytic stripping circuit, which can reasonably and accurately release the guide 2. It should be noted that the electrolytic deactivation circuit is a technical solution mature in the field and not specifically described herein.

The pushing member 3 further includes a core shaft 32, the pushing portion 31 has a cavity 311, and at least a part of the core shaft 32 is disposed in the cavity 311. The mandrel 32 is made of metal, and has good pushing performance and flexibility. The core shaft 32 is used to transmit the force applied to the pushing portion 31 to the guide member 2, thereby delivering the guide member 2 into the blood vessel.

Two marking points 33 are further arranged on the mandrel 32, the two marking points 33 are both arranged on the mandrel 32 on one side of the connecting piece 4 close to the blood vessel, and the distance between the two marking points 33 is approximately equal to the longitudinal length of the guide piece 2, so that a user can determine the moving position of the guide piece 2 through an external imaging device. In this embodiment, the mark 33 is a developing ring 33 made of platinum alloy or gold, and the two developing rings 33 are respectively sleeved on the outer side of the mandrel 32. In other embodiments, the mark point 33 may be made of other materials as long as the above-mentioned effects are achieved.

The connector 4 includes a connector 41 and an absorbent 42 disposed outside the connector 41. The connecting body 41 is used to connect the guiding member 2 and the pushing member 3, and the adsorbing body 42 is used to connect the pushing portion 31 and the guiding member 2. In particular, since the guide 2 is a woven self-expanding structure, it has a certain softness and can be freely gripped. The connecting body 41 thus serves to press the end of the guide 2 close to the pusher 3 against the mandrel 32. In this embodiment, the connector 41 is a spiral structure of an active metal with biocompatibility, the metal may be magnesium, zinc, iron, or the like, and the connector 41 is connected to an anode conducting mechanism in an electrolytic stripping circuit, and after the power is turned on, the connector can be corroded and broken at any time under the action of the electrolytic stripping circuit, so that the guide 2 is separated from the pushing portion 31, and the gripped guide 2 is not limited by the connector 4, thereby releasing the guide 2. In other embodiments, the connecting body 41 may be provided in other shapes as long as it can be broken by the electrolytic stripping circuit to release the guide 2.

The absorbent body 42 is provided as a hydrogel coating that is wrapped around the outer surface of the connecting body 41 and connected to the cathode conductive structure in the electrolytic deactivation circuit. When the support member 1 reaches the target position, the connecting body 41 is corroded and broken by the action of the electrolytic trip circuit, and then the hydrogel coating is broken to separate the guide member 2 from the pushing part 31. In this embodiment, the hydrogel coating may be gelatin-modified hydrogel, hyaluronic acid and modified hydrogel thereof, polyvinyl alcohol and derivative thereof crosslinked hydrogel, or pyrethroid hydrogel. The present invention is not particularly limited as long as the above-described effects are achieved.

In summary, the operation process of the electrolytic hemorrhage guiding device 100 is as follows: the support member 1 is conveyed to the position of the aneurysm of the blood vessel and fixed, the pushing part 31 and the mandrel 32 are pushed to enable the guide member 2 to move along the inner wall of the support member 1, the positions of the two development marks on the mandrel 32 are observed through an imaging device, and when the position of the aneurysm is located between the two development marks, normal saline is introduced into the accommodating cavity 11 of the support tube to provide a stable electrolysis environment. Then, the guide member 2 is continuously pushed to move towards the direction far away from the pushing member 3 until most of the guide member 2 is pushed into the blood vessel, the self-expanding woven wire dense-mesh structure is attached to the inner wall of the blood vessel and anchored, at the moment, an electrical release circuit is connected, so that the connecting body 41 is conducted with the adsorbing body 42, the connecting body 41 starts to be corroded and broken, the guide member 2 pressed and held by the connecting body 41 is separated from the connecting body 41, the electrical release circuit is disconnected, the pushing part 31 and the mandrel 32 are retracted under the action of external force, and as most of the guide member 2 is released in the blood vessel, a small part of the guide member 2 pressed and held by the connecting body 41 also enters the blood vessel by using the anchoring force of the guide member 2, and the process that the whole guide device 100 is released into the blood vessel is completed. Compared with the prior art, the electrolytic blood flow removal guiding device 100 is simple in structure and convenient to operate, and can reasonably and accurately convey and release the guide piece 2.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An electrolytic hemorrhage flow guiding device connected with an electrolytic hemorrhage circuit, comprising:

a support member having an accommodating chamber;

the guide piece is arranged in the accommodating cavity;

2. The electrolytic hemorrhage diverting device according to claim 1, wherein the connecting member comprises a connecting body connecting the pushing member and the guiding member, and an adsorbing body disposed outside the connecting body.

3. The electrolytic hemorrhage diverting device of claim 2 wherein the adsorbent is provided as a hydrogel coating.

4. The electrolytic hemorrhage diverting device of claim 3 wherein the connecting body is helical.

5. The electrodeionization blood flow directing device of claim 3, wherein the connector is formed of a biocompatible, reactive metal and is adapted to erode and break under the action of the electrodeionization circuit.

6. The electrolytic hemorrhage diverting device according to claim 5, wherein the metal is magnesium or zinc or iron.

7. The electrolytic hemorrhage diverting device of claim 1 wherein the pusher further comprises a pusher portion connected to the connector and a mandrel, the pusher portion having a cavity, at least a portion of the mandrel being disposed within the cavity.

8. The electrolytic hemorrhage flow guiding device of claim 7 wherein the mandrel is further provided with at least one marker point.

9. The electrolytic hemorrhage diverting device according to claim 1, wherein the inner wall of the supporting member is a smooth inner wall, or the inner wall of the supporting member is provided with a smooth layer.

10. The electrolytic hemorrhage flow guiding device of claim 1, wherein the guiding element is a self-expanding metal braided stent made of nitinol, cobalt-chromium alloy, or platinum-iridium alloy.