CN219462270U

CN219462270U - Plugging type angiography and treatment catheter

Info

Publication number: CN219462270U
Application number: CN202222683850.9U
Authority: CN
Inventors: 李麟荪; 常永焕
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-12
Filing date: 2022-10-12
Publication date: 2023-08-04
Anticipated expiration: 2032-10-12

Abstract

The utility model discloses a plugging angiography and treatment catheter which comprises a catheter body, a distal balloon, a proximal balloon and a handle, wherein the catheter body comprises a guide wire cavity and a balloon cavity which are arranged in parallel and are mutually isolated, the guide wire cavity is communicated with a first opening of the handle, the balloon cavity is communicated with a second opening of the handle, an end hole, a distal balloon hole, a proximal balloon hole and a side hole are formed in the catheter body, the distal balloon hole and the proximal balloon hole are communicated with the balloon cavity, the end hole and the side hole are communicated with the guide wire cavity, the end hole is positioned at the distal end of the distal balloon, and the side hole is positioned at the proximal end of the proximal balloon. The catheter can prevent the balloon from being excessively filled to damage the blood vessel, is used for judging the bleeding point and stopping bleeding in time, can be used for thrombolysis or drug delivery, can improve the treatment effect, and does not influence the normal flow of blood flow.

Description

Plugging type angiography and treatment catheter

Technical Field

The utility model relates to a plugging angiography and treatment catheter, and belongs to the technical field of medical appliances.

Background

Major post-traumatic hemorrhage is the leading cause of death. The major bleeding caused by severe wounds such as pelvic fracture, pelvic organ injury and the like needs a rapid and effective hemostasis means in pre-hospital emergency and in-hospital emergency. Currently, the main blood supply of the uterus can be temporarily blocked by utilizing the abdominal aortic balloon, so that time is gained for rescuing the life of a patient. The abdominal aortic balloon blocking operation is simple and easy to implement, the balloon blocking operation is not needed to be inserted through one side of the femoral artery, and the adverse effect on a patient is low, so that the balloon blocking technology is one of important means for controlling bleeding, and the balloon can be placed on the abdominal aorta and the common iliac artery to stop bleeding of blood vessels in time.

As described in chinese patent No. 202220686445.X, entitled "an abdominal aortic or iliac artery blood blocking balloon catheter", the disclosed abdominal aortic or iliac artery blood blocking balloon catheter comprises an elastic sheath (1), wherein the upper portion of the elastic sheath (1) has an arc-shaped bend (2) bent downward, and the inner cavity of the elastic sheath (1) is provided with a conforming balloon catheter (4); an inflation channel (8) is arranged in the tube walls of the elastic sheath tube (1) and the balloon catheter (4), an inflation balloon (3) connected with the upper end of the inflation channel (8) is arranged on the outer side walls of the upper parts of the elastic sheath tube (1) and the balloon catheter (4), and the lower end part of the inflation channel (8) is connected with an inflation tube (9); the inflatable saccule (3) of the elastic sheath tube (1) is positioned between the lower end part of the elastic sheath tube and the arc-shaped bending part (2). It can be seen that the blocking balloon catheter is provided with a balloon on the elastic sheath tube and the balloon catheter inside. The balloon on the elastic sheath tube has insufficient compliance, and is easy to cause damage to the inner wall of the blood vessel; if the balloon is arranged on the inner catheter and the outer catheter respectively, the tube diameter of the outer elastic sheath needs to be increased to accommodate the inner balloon catheter, but the balloon catheter is penetrated into the blood vessel from the femoral artery, and the tube diameter is required to be not large, so that the patent is limited in application.

Disclosure of Invention

The utility model aims to provide a plugging type angiography and treatment catheter.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

a plugging type angiography and treatment catheter comprises a catheter body, a far-end saccule, a near-end saccule and a handle,

the tube body comprises a guide wire cavity and a balloon cavity which are arranged in parallel and are mutually isolated, the guide wire cavity is communicated with a first opening of the handle, the balloon cavity is communicated with a second opening of the handle,

the tube body is provided with an end hole, a far-end balloon hole, a near-end balloon hole and a side hole, the far-end balloon hole and the near-end balloon hole are communicated with the balloon cavity, the end hole and the side hole are communicated with the guide wire cavity,

the end hole is located at the distal end of the distal balloon, and the side hole is located at the proximal end of the proximal balloon.

Wherein preferably, the balloon cavity comprises a proximal balloon cavity and a distal balloon cavity,

the handle may further comprise a third opening,

the proximal balloon cavity is communicated with the proximal balloon hole and the second opening,

the distal balloon lumen is in communication with the distal balloon aperture and the third opening.

Wherein preferably, the proximal balloon and the distal balloon are compliant balloons.

Wherein preferably the distance between the proximal balloon and the distal balloon is sufficiently large to enable the proximal balloon and the distal balloon to be placed in the common iliac arteries on both sides, respectively.

Wherein preferably the distance between the proximal balloon and the distal balloon is sufficiently small to enable the distal balloon and the proximal balloon to be placed simultaneously within the abdominal aorta.

Wherein, preferably, the pressure sensor is arranged on the tube body in the proximal balloon and/or the distal balloon and used for detecting the pressure of the proximal balloon and/or the distal balloon.

Wherein preferably, the proximal balloon hole and the distal balloon hole are both communicated with the balloon cavity so that the proximal balloon and the distal balloon are simultaneously expanded or contracted.

Wherein preferably, the tube further comprises a drug delivery aperture between the proximal balloon and the distal balloon.

Wherein preferably, the tube body further comprises a drug delivery cavity isolated from the guide wire cavity and the saccule cavity,

the medicine delivery cavity is communicated with the medicine delivery hole and communicated with the third opening of the handle.

Wherein, preferably, the medicine delivery holes are a plurality of.

Drawings

FIG. 1 is a schematic perspective view of a body of a first embodiment of an occlusion angiography and therapy catheter of the present utility model;

FIG. 2 is a schematic perspective view of the tube body of FIG. 1;

FIG. 3 is a schematic cross-sectional view of the tube of FIG. 1;

FIG. 4 is a schematic view of the handle of the occlusion catheter of the first embodiment of the present utility model;

FIG. 5 is a schematic view of a first application scenario of an occluded angiographic and therapeutic catheter according to a first embodiment of the utility model;

FIG. 6 is a schematic diagram of a second application scenario of the occlusion angiography and therapy catheter according to the first embodiment of the utility model;

FIG. 7 is a schematic view of a first application scenario of an occluded angiographic and therapeutic catheter according to a first embodiment of the utility model;

FIG. 8 is a schematic view of a first application scenario of an occluded angiographic and therapeutic catheter according to a first embodiment of the utility model;

FIG. 9 is a schematic cross-sectional view of an occluded angiographic and therapeutic catheter according to a second embodiment of the utility model;

FIG. 10 is a schematic view of the handle structure of an occluded angiographic and therapeutic catheter according to a second embodiment of the utility model;

FIG. 11 is a schematic perspective view of a tube body structure of an occluded angiographic and therapeutic catheter according to a third embodiment of the utility model;

fig. 12 is a schematic view of an application scenario of an occlusion type angiography and therapy catheter according to a third embodiment of the utility model.

Detailed Description

The technical contents of the present utility model will be described in detail with reference to the accompanying drawings and specific examples.

< first embodiment >

Referring to fig. 1 to 3, the occlusion type angiography and treatment catheter in the present embodiment is used for hemostasis of the abdominal aorta and hemostasis of the iliac arteries in the hemorrhage producing operation, and the hemostatic effect of the iliac arteries is smaller than that of the abdominal aorta, and the vascular damage is smaller.

The plugging angiography and treatment catheter of the embodiment is of a three-cavity double-balloon structure and comprises a catheter body 1, a distal balloon 2, a proximal balloon 3 and a handle 4. The distal balloon 2 is arranged at the distal end of the tube body 1 and wraps the outer peripheral surface of the tube body 1; the proximal balloon 3 is arranged at the proximal end of the tube body 1 and wraps the outer circumferential surface of the tube body 1. The two balloons are preferably made of compliant balloon materials such as silica gel, TPE, latex and the like, and have no damage to blood vessels. However, those skilled in the art will appreciate that non-compliant or semi-compliant balloon materials such as nylon may be used for both balloons. Here, proximal refers to the end proximal to the handle; correspondingly, the distal end is the end remote from the handle.

As shown in fig. 1 and 2, the tube body 1 is an elongated hollow tubular structure with an open port (not closed) at its distal end and a handle 4 at its proximal end. The tube 1 includes a distal balloon lumen 11, a proximal balloon lumen 12, and a guidewire lumen 13 disposed in parallel along a centerline of the tube 1. And the three are isolated from each other. It is understood that the balloon lumen includes a proximal balloon lumen and a distal balloon lumen.

An end hole 6 is formed at the most distal end of the tube body 1. The end hole 6 is the most distal end of the guidewire lumen 13. Thus, a guidewire (not shown) may enter the guidewire lumen 13 from the handle (shown in fig. 4) and extend out of the body 1 from the end opening 6.

The circumferential side wall of the tube body 1 is also provided with a distal balloon hole 102, a proximal balloon hole 103 and a side hole 7. The distal balloon hole 102 is communicated with the distal balloon cavity 11; the proximal balloon hole 103 is in communication with the proximal balloon lumen 12. Thus, gas or liquid from the distal balloon lumen 11 may enter the distal balloon 2 through the distal balloon aperture 102; gas or liquid from the proximal balloon lumen 12 may enter the proximal balloon 3 through the proximal balloon aperture 103. Since the distal balloon lumen 11 and the proximal balloon lumen 12 are mutually isolated lumens, the distal balloon 2 and the proximal balloon 3 can be inflated or deflated, respectively. That is, three ways can be implemented: 1) Only the distal balloon expands and the proximal balloon contracts; 2) Only the proximal balloon is expanded and the distal balloon is contracted; 3) Both balloons are inflated.

Further, a side hole 7 is formed in the circumferential side wall of the tube body 1. The side hole 7 is open to the guidewire lumen 13 and is located closer to the handle 4 than the proximal balloon 3.

The handle 4 is of conventional design and is attached to the proximal end of the tube 1 as shown in figure 4. Corresponding to the three-cavity structure of the tube body 1, the handle 4 comprises a first opening 41 communicated with the guide wire cavity and a second opening 42 communicated with the distal balloon cavity 11; a third opening 43 through the proximal balloon lumen 12.

More preferably, as shown in fig. 3, a pressure sensor 8 (shown as a wire of pressure sensor 8) is provided into the interior of distal balloon 2. The pressure sensor 8 is used to detect the pressure of the distal balloon 11 in the expanded state. Similarly, the pressure sensor 8 may also be provided on the inner wall of the tube 1 and inside the proximal balloon 3, or one at each of the two balloons.

As shown in fig. 5, when the occlusion angiography and treatment catheter of the present embodiment is used to perform hemostasis of the abdominal aorta, a guide wire is inserted through the first opening 41 and is first placed into the abdominal aorta of the patient. The guidewire lumen 13 of the occluded angiographic and therapeutic catheter of this embodiment is then over-fitted over the guidewire and delivered along the guidewire to the target site within the abdominal aorta. The guidewire is withdrawn from the guidewire lumen 13. And then liquid or gas is fed from the second opening 42 to expand the distal balloon lumen 11 to block the blood flow in the abdominal aorta, thereby achieving hemostatic effect in both iliac arteries. At this time, the proximal balloon 3 is in a contracted state. Contrast medium is then injected from the first opening 41 and delivered through the guidewire lumen 13 to the end opening 6 and side opening 7.

Because the end hole 6 is located at the distal end of the distal balloon 2 and the side hole 7 is located at the proximal end of the proximal balloon 3 (also at the proximal end of the distal balloon 2), the end hole 6 and the side hole 7 are located on either side of the distal balloon 2, respectively. Moreover, the distance between the side hole 7 and the distal balloon 2 is large enough that the distal balloon 2 can be located in the iliac artery while the side hole is located in the abdominal aorta. Thus, contrast agent flowing out of the end hole 6 will cause the distal end of the distal balloon to be visualized; at the same time the contrast agent flowing out of the side hole 7 is also visualized in the iliac artery on one side of the access. At this point, the contralateral iliac artery is free of contrast. This is appropriate in cases where the contralateral iliac artery is normal and there is no bleeding.

The pressure sensor 8 can prevent the damage to the blood vessel caused by over-expansion when the distal balloon 2 is expanded; can also ensure that the expansion degree is large enough and can stop bleeding.

For the application scenario of known unilateral iliac hemorrhage, as shown in fig. 6 or fig. 7. The occlusion type angiography and treatment catheter of this embodiment was fed from one side of the iliac artery access. Under the guidance of the guide wire, the distal balloon 2 is sent to the other iliac artery, which is to be embolized to stop bleeding, and the side hole 7 is held in the iliac artery on the side of the access. I.e. the iliac arteries with the distal balloon and the proximal balloon on different sides. In this state, both the end hole 6 and the distal balloon 2 are in the other iliac artery, and contrast agent enters the other iliac artery from the end hole 6; the distal balloon 2 only occludes the other iliac artery. The iliac artery on this side of the access is then unaffected and the blood flow is normal (because the proximal balloon 3 is not inflated). Moreover, a portion of the contrast agent will be injected from the side hole 7 into the iliac artery on the side of the access.

For uncertain middle bleeding points, the application scenario of the bleeding points needs to be checked first, see fig. 8, and the plugging angiography and treatment catheter in this embodiment can be used to judge and stop bleeding points in the operation of pelvic trauma and major bleeding.

Specifically, the occlusion angiographic and therapeutic catheter in this embodiment is delivered from one side of the common iliac artery access using a preformed guidewire until the distal balloon 2 enters the opposite side common iliac artery. For example, in fig. 8, from the right common iliac artery access, the distal balloon 2 is positioned in the left common iliac artery and the proximal balloon 3 is positioned in the right common iliac artery. The distal balloon 2 and the proximal balloon 3 are then inflated to block blood flow in the left common iliac artery and the right common iliac artery. And then the contrast agent injected through the guide wire cavity 13 enters the common iliac arteries at the two sides through the end hole 6 and the side hole 7 respectively, and can simultaneously contrast the common iliac arteries, the internal iliac arteries and the external iliac arteries at the two sides, thereby rapidly judging bleeding points.

If bleeding is determined on only one side, the balloon on the contralateral common iliac artery is contracted. Thus, only the common iliac artery on one bleeding side can be used for embolism and hemostasis; and simultaneously, the common iliac artery on the opposite side quickly restores normal blood flow. If the bleeding on the two sides is judged, the embolism hemostasis can be carried out on the blood vessels on the two sides at the same time, and the bleeding is reduced.

In addition, the present utility model adjusts the operation mode of balloon dilation in the abdominal aortic vessel in the prior art to balloon dilation in the iliac artery. Since the blood flow of the abdominal aortic vessel is greater than that in the iliac artery, the impact of the abdominal aortic blood flow is large. From the blood flow dynamics, it is known that balloon dilation is performed in the abdominal aorta, and an hemangioma or a pseudo-aneurysm is easily formed in the abdominal aorta. However, balloon dilation in the iliac arteries does not present this problem.

Referring to fig. 5-8, the proximal and distal balloons are spaced sufficiently apart to allow the proximal and distal balloons to be placed within the common iliac arteries on both sides, respectively; moreover, the spacing of the proximal and distal balloons is sufficiently small to enable the distal and proximal balloons to be simultaneously positioned within the abdominal aorta.

< second embodiment >

As shown in fig. 9 and 10, the occlusion type angiographic and therapeutic catheter in the present embodiment is different from the first embodiment in that it is a dual-lumen structure.

The occlusion type angiography and treatment catheter in this embodiment comprises a tube body 1A, a distal balloon 2, a proximal balloon 3 and a handle 4A.

As shown in fig. 9, the tube body 1A has a double-lumen structure including a guidewire lumen 13 and a balloon lumen 15. The balloon cavity 15 is communicated with the distal balloon 2 and the proximal balloon 3, so that the two balloons can be expanded or contracted simultaneously. The respective handles 4A comprise a first opening 41 and a second opening 42, without a third opening. The first opening 41 is communicated with the guide wire cavity 13; the second opening 42 communicates with the balloon lumen 15.

The occluded angiographic and therapeutic catheter of this embodiment is suitable for point-of-bleeding examination of the common iliac artery on the opposite side of the puncture site, as shown in fig. 8.

< third embodiment >

Referring to fig. 11, the occlusion angiographic and therapeutic catheter in this embodiment is used for thrombolysis or drug delivery, and comprises a tube body 1B, a distal balloon 2 and a proximal balloon 3, and a handle 4.

The tube body 1B is of a three-cavity structure and comprises a guide wire cavity 13B, a balloon cavity 15B and a medicine feeding cavity 16. The guidewire lumen 13B, balloon lumen 15B and drug delivery lumen 16 are all parallel to the centerline of the tube 1B and are isolated from each other.

An end hole 6 is formed at the most distal end of the tube body 1B. The end hole 6 is the most distal end of the guidewire lumen 13B. Thus, a guidewire (not shown) may enter the guidewire lumen 13B from the handle 4 (shown with reference to fig. 4) and extend out of the body 1B from the end bore 6.

The circumferential side wall of the tube body 1B is also provided with a far-end balloon hole 102B, a near-end balloon hole 103B, a side hole 7 and a medicine delivery hole 9. Both the distal balloon hole 102B and the proximal balloon hole 103B communicate with the balloon lumen 15B. Thus, gas or liquid from balloon lumen 15B may enter distal balloon 2 through distal balloon aperture 102B, while entering proximal balloon 3 through proximal balloon aperture 103B. The distal balloon 2 and the proximal balloon 3 are controlled to simultaneously inflate or deflate.

The side hole 7 is communicated with the guide wire cavity 13B and is located closer to the handle 4 than the proximal balloon 3, i.e., at the proximal end of the proximal balloon 3. The side holes 7 may be one or more. In the present embodiment, 3 are taken as an example, but not limited thereto.

The drug delivery holes 9, which may be one or more, are located between the distal balloon 2 and the proximal balloon 3. The drug delivery hole 9 is communicated with the drug delivery cavity 16, so that the drug liquid can pass through the drug delivery hole 9 from the drug delivery cavity 16 and enter the blood vessel between the two balloons.

The structure of the handle 4 is the same as the first embodiment, and comprises a first opening 41 communicated with the guide wire cavity 13B and a second opening 42 communicated with the balloon cavity 15B; and a third opening 43 communicating with the medication chamber 16.

As shown in fig. 12, after the proximal balloon 3 and the distal balloon 2 of the occlusion angiography and treatment catheter of the present embodiment are placed into one side of the external iliac artery, respectively, the proximal balloon 3 and the distal balloon 2 are simultaneously expanded to achieve the embolization of the one side of the external iliac artery. However, since the end hole 6 and the side hole 7 are penetrated through the guidewire lumen 13B, blood from the abdominal aorta enters the guidewire lumen 13B from the end hole 6 and flows out from the side hole 7 to the external iliac artery. Thus, although both balloons occlude one external iliac artery, blood can still flow normally from the abdominal aorta into that external iliac artery.

Thereafter, a thrombolytic agent or contrast agent, a chemotherapeutic agent, or the like is injected into the drug delivery lumen 16 through the third opening 43 to pass through the drug delivery orifice 9 into the internal iliac artery. Since the two balloons block the external iliac artery at this time, blood does not enter the internal iliac artery, but thrombolytic agents, contrast agents or drugs enter the internal iliac artery, thereby increasing the local drug concentration in the internal iliac artery and prolonging the duration of action to improve the efficacy. When the drug delivery is finished, the two saccules are contracted simultaneously, the blocking angiography and treatment catheter is withdrawn, and the operation is finished.

In summary, the present utility model relates to a blocking angiography and therapy catheter, which adopts a dual-cavity or three-cavity structure to realize simultaneous or separate control of the inflation and deflation of a balloon. The balloon body is preferably designed by adopting a compliant material (such as silica gel, latex and TPE material) so as to reduce the damage to blood vessels. Meanwhile, the pressure of the balloon can be tested in real time by using the pressure sensor, so that the balloon is prevented from being excessively filled to damage the blood vessel.

In addition, the filling and expanding of the double saccule can not only achieve the effect of stopping bleeding, but also can be used for embolism or radiography of the common iliac artery on both sides or the common iliac artery on one side under the condition that the bleeding point of the common iliac artery on both sides is not clear through the end hole and the side hole, so that the bleeding point can be judged and bleeding can be stopped in time.

In addition, the utility model can avoid the abdominal aortic vascular lesions caused by balloon dilation of the abdominal aorta by utilizing the filling and expanding of two balloons respectively positioned on the bilateral common iliac arteries.

Furthermore, the utility model utilizes two balloons positioned on one side of the external iliac artery to perform thrombolysis, drug injection (such as tumor chemotherapy drugs) and the like on the internal iliac artery, thereby improving the treatment effect and not affecting the normal flow of blood through the side of the external iliac artery. When the medicine takes effect or the medicine needs a long time, the normal blood flow can be maintained, and the problem caused by the ischemia of the external iliac artery and the lower limb can be avoided.

The catheter of the utility model can be used for thrombolysis or ablation of iliac arteries, internal iliac arteries, external iliac arteries, femoral arteries and femoral veins by drug injection, and has wide application range.

The present utility model has been described in detail. Any obvious modifications to the present utility model, without departing from the spirit thereof, would constitute an infringement of the patent rights of the utility model and would take on corresponding legal liabilities.

Claims

1. A plugging type angiography and treatment catheter comprises a catheter body, a far-end saccule, a near-end saccule and a handle, and is characterized in that,

2. The occlusion angiographic and therapeutic catheter of claim 1, wherein the catheter is configured to receive a catheter,

the balloon lumen comprises a proximal balloon lumen and a distal balloon lumen,

the handle may further comprise a third opening,

3. The occlusion angiographic and therapeutic catheter of claim 2, wherein the catheter is configured to receive a catheter,

the proximal balloon and the distal balloon are compliant balloons.

4. The occlusion angiographic and therapeutic catheter of claim 3, wherein the catheter is configured to receive a catheter,

the distance between the proximal balloon and the distal balloon is large enough to enable the proximal balloon and the distal balloon to be placed in the common iliac arteries on both sides, respectively.

5. The occlusion angiographic and therapeutic catheter of claim 3, wherein the catheter is configured to receive a catheter,

the distance between the proximal balloon and the distal balloon is sufficiently small to enable the distal balloon and the proximal balloon to be placed simultaneously within the abdominal aorta.

6. The occlusion angiographic and therapeutic catheter of claim 4 or 5, wherein the catheter is configured to receive a catheter,

and the pressure sensor is positioned on the tube body in the proximal balloon and/or the distal balloon and used for detecting the pressure of the proximal balloon and/or the distal balloon.

7. The occlusion angiographic and therapeutic catheter of claim 2, wherein the catheter is configured to receive a catheter,

the proximal balloon aperture and the distal balloon aperture are both in communication with the balloon lumen to allow the proximal balloon and the distal balloon to simultaneously expand or contract.

8. The occluded angiographic and therapeutic catheter of any one of claim 2-5,

the tube further includes a drug delivery aperture between the proximal balloon and the distal balloon.

9. The occlusion angiographic and therapeutic catheter of claim 8, wherein the catheter is configured to receive a catheter,

the tube body also comprises a medicine feeding cavity isolated from the guide wire cavity and the saccule cavity,

10. The occlusion angiographic and therapeutic catheter of claim 9, wherein the catheter is configured to receive a catheter,

the medicine feeding holes are multiple.