CN219070473U - Intravascular occlusion device and vascular occlusion system - Google Patents
Intravascular occlusion device and vascular occlusion system Download PDFInfo
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- CN219070473U CN219070473U CN202220538564.0U CN202220538564U CN219070473U CN 219070473 U CN219070473 U CN 219070473U CN 202220538564 U CN202220538564 U CN 202220538564U CN 219070473 U CN219070473 U CN 219070473U
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Abstract
The present disclosure relates to the field of medical devices, and more particularly, to an intravascular occlusion device and a vascular occlusion system. The blocking device for the blood vessel comprises a liquid injection joint, a liquid injection catheter and two support bags, wherein the two support bags are arranged in the blood vessel and are communicated to the liquid injection joint through the liquid injection catheter; the liquid injection joint is provided with a liquid inlet, and the liquid inlet is communicated with a liquid injection supply device so as to inject liquid into the inner cavity of the support bag through the liquid injection guide pipe until the support bag is expanded to be abutted with the inner wall of the blood vessel along the circumferential direction of the blood vessel, so that the blood flow in the blood vessel is blocked. The intravascular blocking device and the intravascular blocking system provided by the disclosure can block blood flow in a blood vessel by arranging the supporting bag capable of realizing expansion through liquid injection in the blood vessel, replace the traditional side wall pliers, reduce the intervention of instruments in an operation space, enable the blood vessel to still keep a cylindrical shape under a normal form in the operation process, and avoid the side wall pliers from causing the blood vessel to be extruded and attached together.
Description
Technical Field
The present disclosure relates to the field of medical devices, and more particularly, to an intravascular occlusion device and a vascular occlusion system.
Background
For some blood vessels similar to dysplasia which is manifested by congenital heart disease, to achieve the correction effect in later treatment, a palliative operation is required to promote the development of the blood vessels, wherein, the shunt operation is the most commonly used operation mode. In the operation process of the shunt operation, the blood vessels at the two ends of the target blood vessel are blocked and clamped by using the side wall forceps, so that the target blood vessel area reaches a blood-free operation field, then an incision with the size matched with that of the erected blood vessel is cut, so that a blood vessel cavity is exposed, anastomosis between the blood vessels at one end is carried out, and then anastomosis between the blood vessels at the other end is completed.
However, due to the large structure of the side wall forceps and the thick wall of the forceps, when the blood flow is clamped, the wall of the forceps is too much, so that the wall of the blood vessel is deformed, the blood vessel cavities near the incision are attached together and cannot be effectively exposed, the vascular anastomosis is difficult, especially for the cases of thin development and short blood vessel, the poor anastomosis effect can cause operation failure, the situations of twisting, non-passing and slow blood flow of the blood vessel after anastomosis occur, and even thrombus is generated in the lumen in serious cases.
Disclosure of Invention
In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides an intravascular occlusion device and a vascular occlusion system.
In a first aspect, the present disclosure provides an intravascular occlusion device comprising a fluid injection joint, a fluid injection catheter, and two support balloons, both of which are configured to be disposed inside a blood vessel, and each of which is connected to the fluid injection joint through the fluid injection catheter;
the liquid injection joint is provided with a liquid inlet for liquid to enter, so that the support bag expands under the action of the liquid and is abutted against the inner wall of the blood vessel to block blood flow in the blood vessel.
Optionally, the liquid injection conduit comprises a main conduit and two branch conduits, one end of the main conduit is communicated with the liquid injection joint, and the other end of the main conduit is communicated with the two branch conduits;
each of the branch conduits communicates with the lumen of one of the support cells.
Optionally, the number of annotate the liquid pipe is two, annotate the liquid joint and have inlet and two liquid outlets, every annotate the one end of liquid pipe with one the liquid outlet intercommunication, every annotate the other end of liquid pipe with one the inner chamber intercommunication of supporting the bag.
Optionally, a one-way valve is disposed at the liquid inlet of the liquid injection connector or the liquid outlet of the liquid injection connector, and the set flow direction of the one-way valve is the direction of the liquid injection connector towards the support bag.
Optionally, the support bag is detachably connected with the liquid injection catheter.
Optionally, the support bag is made of flexible materials.
Optionally, the shape of the support bag is spherical or ellipsoidal.
Optionally, the liquid injection conduit is of a telescopic structure, and the telescopic direction of the liquid injection conduit is the axial direction of the liquid injection conduit.
In a second aspect, the present disclosure further provides a vascular occlusion system, which includes the intravascular occlusion device and an infusion supply device, where the infusion supply device has a liquid supply port, and the liquid supply port is in communication with the liquid inlet port, and is configured to supply liquid into the inner cavity of the support bag.
Optionally, the liquid injection supply device comprises a liquid injection storage and a liquid injection pump, wherein the liquid injection storage is used for storing liquid, and the liquid injection pump is arranged between the liquid injection storage and the liquid inlet so as to pump the liquid in the liquid injection storage into the liquid injection guide pipe.
Compared with the prior art, the technical scheme provided by the disclosure has the following advantages:
according to the intravascular blocking device and the intravascular blocking system, the supporting bag capable of realizing expansion through liquid injection is arranged in the blood vessel to block blood flow in the blood vessel, so that a traditional use mode of the side wall pliers is replaced, the interference of instruments in an operation space is reduced while the blood flow is blocked, a three-dimensional supporting effect can be achieved in a blood vessel cavity, the blood vessel can still keep a cylindrical shape in a normal form in an operation process, the anastomotic stoma is further stretched, the problem that the side wall pliers cause the blood vessel to be extruded and attached together in a clamping process is avoided, the anastomotic stoma can be better exposed in an anastomosis process, and particularly, the problem that the size of the anastomotic stoma cut is limited due to the fact that the side wall pliers occupy too many space positions can be avoided when the side wall pliers are used for a plurality of cases of serious vascular dysplasia and short vascular branches.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 is a schematic view of an intravascular occlusion device according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the intravascular occlusion device according to an embodiment of the present disclosure in use;
fig. 3 is a flow chart of a vascular occlusion method according to an embodiment of the present disclosure.
Wherein, 1, the liquid injection joint; 2. a liquid injection conduit; 21. a main conduit; 22. a branch conduit; 3. a support bladder; 4. an artificial blood vessel; 5. and (3) a target blood vessel.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.
For some blood vessels similar to dysplasia exhibited by congenital heart disease, such as cyanosis with little pulmonary blood, the involved blood vessels include main pulmonary artery, left pulmonary artery and right pulmonary artery and branches thereof, and to achieve the correction effect in later treatments, a palliative operation is required to promote the development of blood vessels, wherein the shunt operation is the most commonly used operation mode, such as body-lung shunt operation. The body and lung shunt operation is also called as Block-Taussig shunt (BT shunt), which refers to the connection of body artery and pulmonary artery by using self blood vessel or artificial blood vessel, and has the purposes of increasing the pulmonary circulation blood flow and promoting the development of pulmonary blood vessel.
In the operation process of the shunt operation, the blood vessels at two ends of the target blood vessel are required to be blocked and clamped, so that the target blood vessel area reaches a blood-free operation field, then an incision with the size matched with that of the erected blood vessel is cut, so as to expose the blood vessel cavity, anastomosis between the blood vessels at one end is performed, and then anastomosis between the blood vessels at the other end is completed.
At present, the devices used for blocking blood flow of blood vessels at home and abroad are side wall clamps which clamp the blood vessel wall of a region and perform vascular anastomosis operation on a target blood vessel region. However, due to the large structure of the side wall forceps and the thick wall of the forceps, when the blood flow is clamped, the wall of the blood vessel is deformed, the blood vessel cavities near the incision are attached together and cannot be effectively exposed, the vascular anastomosis is difficult, especially for the cases of thin development and short blood vessel, the poor anastomosis effect can cause the shunt failure, the problems of vessel distortion, obstruction, slow blood flow and the like after anastomosis, and even thrombus can be generated in the lumen in serious cases.
To above-mentioned defect, this disclosure provides a blocking device for endovascular, through setting up this blocking device for endovascular in the blood vessel, on the basis that has guaranteed blocking the endovascular blood flow, has still avoided using the lateral wall pincers and has made the problem that anastomotic site shows the effect poor. The specific structure of the blocking device for the blood vessel is as follows:
as shown in fig. 1 and 2, the present embodiment provides a blocking device for blood vessel, which includes a liquid injection joint 1, a liquid injection catheter 2, and two support bags 3, the two support bags 3 being for being disposed inside a blood vessel, and each support bag 3 being communicated to the liquid injection joint 1 through the liquid injection catheter 2.
The liquid injection joint 1 is provided with a liquid inlet for liquid to enter, so that the support bag 3 is expanded under the action of the liquid, is abutted against the inner wall of a blood vessel, and blocks blood flow in the blood vessel.
Among them, the blood vessel used for the shunt is selected from a self blood vessel and an artificial blood vessel, and an artificial blood vessel is mostly used in the operation at present, and thus the artificial blood vessel 4 is used as an example in the present embodiment. The liquid injected into the support bag 3 can be normal saline, is a material easy to obtain in an operating room, and is harmless to patients.
Specifically, when in use, the region of the target blood vessel 5 to be operated is fully dissociated and exposed, two blocking forceps are used for temporarily blocking two ends of the blood vessel so as to block blood flow in the target blood vessel 5, then a scalpel is used for cutting the wall of the blood vessel, after an anastomotic stoma with a proper size is obtained, two support bags 3 of the blocking device for the blood vessel are placed into a blood vessel cavity through the incision, and are pushed to a proper position. After confirming the position and placing the support bags 3, injecting liquid into the two support bags 3 through the liquid injection catheter 2, and after the support bags 3 reach a proper size, namely the size capable of supporting the blood vessel wall, removing blocking pliers at two ends of the blood vessel, and checking whether the support bags 3 leak blood or not. If part of blood still leaks, the position and the size of the supporting bag 3 are adjusted again until the supporting bag can completely block blood flow in blood vessels, and a clean bloodless operation field is obtained, namely the effect of supporting the blood vessels is achieved.
According to the intravascular blocking device, the supporting bag 3 which can be inflated through liquid injection is arranged in a blood vessel to block blood flow in the blood vessel, so that a traditional use mode of the side wall pliers is replaced, the blood flow blocking effect is achieved, meanwhile, the intervention of instruments in an operation space is reduced, a three-dimensional supporting effect can be achieved in a blood vessel cavity, the blood vessel can still keep a cylindrical shape in a normal form in an operation process, an anastomotic stoma is further stretched, the problem that the side wall pliers cause the blood vessel to be extruded and attached together in a clamping process is avoided, the anastomotic stoma can be better exposed in an anastomosis process, and particularly, the problem that the size of the cut anastomotic stoma is limited due to the fact that the side wall pliers occupy too many space positions can be avoided.
In addition, when the occlusion device for an intravascular device is used, after the anastomosis is completed, the rear wall of the artificial blood vessel 4 and the target blood vessel 5 are anastomosed first when the anastomosis of the artificial blood vessel 4 is performed, as shown in fig. 2. At this time, the infusion connector 1 and the infusion catheter 2 connecting the two support cells 3 are placed in front of the front wall of the anastomotic incision of the target vessel 5 so as not to affect anastomosis at the rear wall.
When the anastomosis of the artificial blood vessel 4 with the rear wall of the target blood vessel 5 is completed and the anastomosis of the artificial blood vessel 4 with the front wall of the target blood vessel 5 is required, the liquid injection joint 1 and the liquid injection catheter 2 pass through the interior of the artificial blood vessel 4 and are simply fixed on the wall of the artificial blood vessel 4, so that the subject part of the whole blocking device is positioned at the rear parts of the target blood vessel 5 and the artificial blood vessel 4, and the anastomosis of the front wall is not influenced.
After the anastomosis of the artificial blood vessel 4 and the target blood vessel 5 is completed, blocking forceps are used for temporary blocking at two sides of the target blood vessel 5, then the injection liquid in the support bag 3 is discharged through the injection liquid guide pipe 2 and the injection liquid joint 1, and then the blocking device is taken out. After the artificial blood vessel is completely taken out, the blocking forceps are slowly loosened, whether bleeding exists at the anastomotic stoma is checked, if bleeding exists, the anastomotic stoma is sutured again, and if no bleeding exists, the anastomosis between the other end of the artificial blood vessel 4, namely the other end of the artificial blood vessel 4, and the other target blood vessel 5 is started.
The support bag 3 can be made of flexible materials, the deformation of the support bag 3 can be realized through the surface tension in the process of injecting liquid, the limit size of the expansion of the support bag 3 can be set to be slightly larger than the normal cylindrical cross section of a blood vessel, so that reliable abutting joint is formed between the support bag 3 and the wall of the blood vessel to ensure blocking effect, and the support bag is made of flexible materials, so that the wall of the blood vessel at the abutting joint is not damaged greatly. In this embodiment, the material of the support bag 3 is selected from silica gel, which is less likely to cause rejection, and is easy to be placed in a human body for a short time. Of course, in other embodiments, other materials that are easy to place in the human body may be used.
In order to facilitate the detachable connection between the support capsule 3 and the infusion catheter 2 for different operation positions, namely for different blood vessel thicknesses, the size of the support capsule 3 is convenient to adjust, so that the support capsule 3 is suitable for different placement positions and is convenient to replace support capsules 3 with different support strengths. In order to form a better abutment with the blood vessel, the support capsule 3 is designed to be spherical or ellipsoidal in the embodiment, so that the support capsule 3 can be reliably abutted with the wall of the blood vessel.
Further, the infusion catheter 2 of the intravascular occlusion device includes a main catheter 21 and two branch catheters 22, one end of the main catheter 21 is communicated with the infusion connector 1, and the other end of the main catheter 21 is communicated with both branch catheters 22. Each branch conduit 22 communicates with the lumen of one support balloon 3. The main catheter 21 is used for being communicated with an infusion pump for providing normal saline from outside so as to introduce the normal saline into the support bags 3, and the other end of the main catheter 21 is communicated with the inner cavity of each support bag 3 through a branch, so that the two balloons can expand at the same speed basically, and the blood flow on two sides of the blood vessel can be blocked simultaneously.
Of course, in other embodiments, the number of the liquid injection pipes 2 may be two, the liquid injection joint 1 has a liquid inlet and two liquid outlets, one end of each liquid injection pipe 2 is communicated with one liquid outlet, and the other end of each liquid injection pipe 2 is communicated with the inner cavity of one support bag 3. That is, two different pipes are connected to the two support bags 3 at the liquid injection joint 1, so that the placement is more convenient for a user.
The liquid injection joint 1 may be provided with a one-way valve, and the set flow direction of the one-way valve is set in a direction in which the liquid injection joint 1 faces the support bag 3. By arranging the one-way valve, the liquid can be prevented from flowing back along the liquid injection catheter 2 in the process of injecting the liquid into the support bag 3, and normal use is affected. Wherein, the check valve can adopt the valve that closes for flexible material, namely, after the liquid of support bag 3 inside fills to limit capacity, the check valve receives the effect of pressure and opens, avoids support bag 3 to warp continually, and causes the damage to the vascular inner wall.
On the basis, the embodiment also provides a vascular occlusion system which comprises the intravascular occlusion device and an infusion supply device. The liquid filling supply device has a liquid supply port which communicates with the liquid inlet port of the liquid filling joint 1 for supplying liquid into the inner cavity of the support bag 3.
The liquid filling supply device comprises a liquid filling storage and a liquid filling pump, wherein liquid is stored in the liquid filling storage, and the liquid filling pump is arranged between the liquid filling storage and the liquid inlet so as to pump the liquid in the liquid filling storage into the liquid filling guide pipe 2. The liquid is stored by the liquid injection supply device, and the pumping acting force is provided by the liquid injection pump, so that the operation difficulty of a user is reduced. The pumping speed of the infusion pump is not set too fast, so that the support bag 3 can be deformed and expanded slowly and stably, and damage to the inner wall of a blood vessel is avoided.
Of course, in other embodiments, the liquid injection supplying device may not be provided, and the manual liquid injection may be realized by connecting the liquid injection connector 1 with a device which is easy to operate, such as a syringe, by a user.
For the liquid injection catheter 2 communicated between the liquid injection joint 1 and the support bag 3, the liquid injection catheter can be set to be of a telescopic structure, so that a user can conveniently adjust the depth and the length of the liquid injection catheter when the liquid injection catheter is placed, and the use flexibility and the adaptation degree of the intravascular blocking device are improved. The expansion and contraction direction of the liquid injection pipe 2 is the axial direction of the liquid injection pipe 2.
Referring to fig. 3, through the structural arrangement of the intravascular blocking device, the present embodiment further provides a vascular blocking method, which includes the steps of:
102, injecting liquid into the inner cavity of the support bag so as to gradually expand the support bag, and stopping injecting liquid after the support bag is expanded to be capable of abutting against the inner wall of the blood vessel along the circumferential direction of the blood vessel;
and 104, draining the support bag, shrinking the support bag until the support bag is in contact with the inner wall of the blood vessel, and taking out the support bag from the opening of the blood vessel.
The intravascular blocking device can be applied to a body-lung shunt operation, can be used for other palliative operations, such as vena cava-pulmonary artery anastomosis operation, and can support the capsule to expand the applicable range of the device.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. 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 disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The blocking device for the intravascular use is characterized by comprising a liquid injection joint (1), a liquid injection catheter (2) and two support bags (3), wherein the two support bags (3) are arranged in a blood vessel, and each support bag (3) is communicated to the liquid injection joint (1) through the liquid injection catheter (2);
the liquid injection joint (1) is provided with a liquid inlet for liquid to enter, so that the support bag (3) is expanded under the action of the liquid, is abutted against the inner wall of the blood vessel, and blocks blood flow in the blood vessel.
2. The intravascular occlusion device according to claim 1, wherein said infusion catheter (2) comprises a main catheter (21) and two branch catheters (22), one end of said main catheter (21) being in communication with said infusion connection (1), the other end of said main catheter (21) being in communication with both of said branch catheters (22);
each of the branch ducts (22) communicates with the lumen of one of the support cells (3).
3. The intravascular blocking device according to claim 1, wherein the number of the liquid injection catheters (2) is two, the liquid injection joint (1) is provided with a liquid inlet and two liquid outlets, one end of each liquid injection catheter (2) is communicated with one liquid outlet, and the other end of each liquid injection catheter (2) is communicated with the inner cavity of one supporting bag (3).
4. The intravascular blocking device according to claim 1, wherein a one-way valve is arranged at a liquid inlet of the liquid injection joint (1) or a liquid outlet of the liquid injection joint (1), and a set flow direction of the one-way valve is a direction of the liquid injection joint (1) towards the support bag (3).
5. The endovascular occlusion device of any of claims 1-4, wherein the support pouch (3) is detachably connected to the infusion catheter (2).
6. An endovascular occlusion device according to any of claims 1-4, wherein the support capsule (3) is of flexible material.
7. The endovascular occlusion device of any of claims 1-4, wherein the support capsule (3) is spherical or ellipsoidal in shape.
8. The intravascular occlusion device according to any of claims 1-4, wherein said infusion catheter (2) is of a telescopic structure, and wherein the telescopic direction of said infusion catheter (2) is in the axial direction of said infusion catheter (2).
9. A vascular occlusion system comprising an intravascular occlusion device according to any of claims 1-8 and an infusion supply device having an infusion port in communication with the infusion port for supplying liquid into the lumen of the support balloon (3).
10. The vascular occlusion system of claim 9, wherein the priming supply device comprises a priming reservoir for holding liquid therein and a priming pump arranged between the priming reservoir and the inlet port for pumping liquid in the priming reservoir into the priming conduit (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220538564.0U CN219070473U (en) | 2022-03-11 | 2022-03-11 | Intravascular occlusion device and vascular occlusion system |
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| CN202220538564.0U CN219070473U (en) | 2022-03-11 | 2022-03-11 | Intravascular occlusion device and vascular occlusion system |
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| CN219070473U true CN219070473U (en) | 2023-05-26 |
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