CN218485007U

CN218485007U - Local anti-bending catheter assembly and intra-aortic balloon pump

Info

Publication number: CN218485007U
Application number: CN202123211361.5U
Authority: CN
Inventors: 解启莲; 解尧; 陈宏凯; 李剑; 徐小菊; 王平
Original assignee: Anhui Tongling Bionic Technology Co Ltd
Current assignee: Anhui Tongling Bionic Technology Co Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2023-02-17
Anticipated expiration: 2031-12-17

Abstract

The utility model relates to the technical field of medical equipment, in particular to a local anti-bending catheter component and an intra-aortic balloon pump, the local anti-bending catheter component comprises a balloon part and an inner tube, the distal end part of the inner tube is connected with the proximal end part of the balloon part so as to lead fluid in and out of the balloon part, the outer sleeve of the inner tube is provided with an outer tube made of hard material, or the outer tube is also provided with a reinforcing part which is arranged along the axial extension; the utility model discloses a directly adopt hard material to make the outer tube, or through set up the reinforcement of arranging along its axial extension on the outer tube, improved the whole rigidity of tubing assembly, the effectual inner tube that has avoided being used for leading-in or deriving the fluid takes place to buckle in the use, and then leads to the inflation volume of sacculus portion to fail to reach anticipated inflation volume to further lead to the condition that systolic pressure reduces unobvious or diastolic pressure boost is not higher than the systolic pressure maximum value to take place.

Description

Local anti-bending catheter assembly and intra-aortic balloon pump

Technical Field

The utility model relates to the technical field of medical equipment, in particular to sacculus pump in local anti bending catheter subassembly and aorta.

Background

As a rescue and treatment method for a critical patient such as cardiac insufficiency, an intra-aortic balloon pump (hereinafter, also referred to as IABP method) is known, which includes a cylindrical balloon fixed to a catheter, and the catheter with the cylindrical balloon is implanted into a thoracic aorta via a femoral artery, and the proximal end of the catheter is located at the distal end of the left subclavian artery, and the distal end thereof is located at a renal artery. The balloon inflates when the heart relaxes and deflates when the heart contracts, thereby creating a dual hemodynamic effect: the diastole air sac is inflated to lead the blood flow to move forward, and the diastolic pressure and the perfusion of coronary artery are improved; deflation of the balloon prior to systole reduces systolic pressure (afterload on the heart) and thus improves left ventricular ejection function.

When a patient is treated by the IABP method, a balloon in the catheter is expectedly inflated and deflated through an external control device, normally, diastolic pressure boost (PSP) is larger than the maximum systolic pressure (PSP), but if the inflation amount of the balloon does not reach the maximum capacity, or the position of the catheter is incorrect and the like, the situation that the systolic pressure is not obviously reduced or the diastolic pressure boost (PSP) is not higher than the maximum systolic pressure (PSP) and the like can be caused, and the expected effect can not be achieved.

During and after the catheter implantation, a patient is absolutely bedridden, the patient is in a flat or semi-lying position of less than 45 degrees, and if the angle is more than 45 degrees, the catheter at the femoral artery is easy to break or damage, and the expected inflation and deflation or the small balloon inflation amount cannot achieve the expected effect.

In the prior art, a metal wire is used for manufacturing a gas circulation hose of a balloon pump in an aorta in a specific winding mode so as to increase the bending strength of a gas circulation pipe, the end part of the gas circulation hose made of a metal material is directly connected with the end part of the balloon, and when the balloon pump is inserted into a patient, or the service time of the balloon pump is too long, the length of the gas circulation hose made of the metal material is possibly changed, and then the balloon part is possibly damaged.

In view of the above, there is a need for a catheter assembly that is resistant to bending to avoid the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a local anti catheter subassembly of buckling to avoid when utilizing the IABP method to treat the patient, lead to the sacculus to fail to reach the anticipated inflation volume because of the patient bows legs or removes, and then lead to the systolic pressure to reduce not obvious or diastolic pressure boost not to be higher than the condition emergence of systolic pressure maximum value.

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

a local bending-resistant catheter component comprises a balloon part and an inner tube, wherein the distal end part of the inner tube is connected to the proximal end part of the balloon part so as to guide fluid into and out of the balloon part, an outer tube is sleeved outside the inner tube, and the outer tube is made of hard materials; and/or the outer tube is further provided with a reinforcement arranged extending in the axial direction.

In a further aspect, a space is provided between the distal end of the outer tube and the proximal end of the balloon portion.

In a further technical scheme, the far end of the outer pipe is provided with a reducing structure extending towards the direction of the port, and the far end part of the outer pipe is fixedly connected with the outer wall of the inner pipe.

In a further technical scheme, the reinforcing piece is a tubular structure or a strip-shaped structure made of nickel-titanium metal;

wherein the reinforcing piece of the tubular structure is sleeved on the tube body of the inner tube;

the reinforcing piece of the long strip-shaped structure and the inner tube are arranged in parallel in the tube cavity of the outer tube.

In a further technical scheme, the body of the reinforcing piece of the tubular structure or the strip-shaped structure is of a solid structure or a hollow structure.

In a further technical scheme, the reinforcing part is a reinforcing pipe which is filled with fluid and has certain pressure, and the reinforcing pipe and the inner pipe are arranged in parallel in a pipe cavity of the outer pipe.

In a further aspect, the distal end of the stiffening tube is closed and the proximal end is open for filling a fluid to form a tube under pressure.

In a further technical solution, the proximal end of the reinforcing member is located at the proximal end of the outer tube, and the distal end of the reinforcing member is located at a position where the outer tube extends 1/3 distance, 1/2 distance from the proximal end to the distal end, or at the distal end of the outer tube.

The utility model also provides an sacculus pump in aorta with above-mentioned local anti bending catheter subassembly.

Compared with the prior art, the utility model discloses following technological effect has:

the utility model provides a local anti-buckling catheter subassembly, directly adopt hard material to make through with the outer tube, or through set up the reinforcement of arranging along its axial extension on the outer tube, the whole rigidity of catheter subassembly has been improved, the effectual inner tube that has avoided being used for leading-in or deriving the fluid takes place to buckle in the use, and then the inflation volume that leads to sacculus portion fails to reach anticipated inflation volume, and further lead to the systolic pressure to reduce the condition emergence that is not obvious or diastolic pressure boost is not higher than the systolic pressure maximum value.

Other features and advantages of the present invention will be described in detail in the following detailed description.

Drawings

FIG. 1 illustrates a schematic structural view of a localized anti-buckling catheter assembly provided in accordance with an embodiment of the present invention;

FIG. 2 is a schematic view of the reinforcement member of the present invention being a tubular structure and sleeved on the inner tube;

FIG. 3 is a schematic view of the reinforcement member of the present invention in a strip configuration juxtaposed with the inner tube within the lumen of the outer tube;

FIG. 4 is a schematic view of the present invention wherein the reinforcement member is a reinforced tube filled with a pressurized fluid and is juxtaposed with the inner tube within the lumen of the outer tube;

the reference numbers in the figures illustrate: 10. a balloon portion; 20. an inner tube; 30. an outer tube; 40. a reinforcement.

Detailed Description

In order to make the technical means, creation characteristics, achievement purpose and efficacy of the utility model easy to understand and understand, the utility model is further clarified by combining the specific drawings.

It is noted that, in the present invention, when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the field of interventional medical devices, it is generally defined that the end of the device closer to the operator is the proximal end portion and the end farther from the operator is the distal end portion.

As described above, the present invention provides a partial kink-resistant catheter assembly including a balloon portion 10 and an inner tube 20, a distal end portion of the inner tube 20 being connected to a proximal end portion of the balloon portion 10 to introduce and discharge a fluid into and out of the balloon portion 10.

In a specific embodiment of the present invention, the outer tube 30 is sleeved outside the inner tube 20, the outer tube 30 is made of a hard material, such as a metal material or a high-strength plastic material, the metal material may specifically be a nickel-titanium metal material, and the high-strength plastic material may specifically be a high-strength nylon material.

In another specific embodiment of the present invention, the outer tube 30 is sleeved outside the inner tube 20, and the outer tube 30 is further provided with a reinforcement 40 arranged along the axial extension.

Based on the utility model provides a local anti-bending catheter subassembly, through directly adopting hard material to make outer tube 30, or through set up on outer tube 30 along its axial extension arrangement's reinforcement 40, improved the whole rigidity of catheter subassembly, the effectual inner tube 20 of having avoided being used for leading-in or leading-out fluid takes place to buckle in the use, and then leads to the gas filling of sacculus portion 10 and can't reach the anticipated gas filling to further lead to the condition that systolic pressure reduces not obviously or diastolic pressure boost is not higher than systolic pressure maximum value to take place; in particular, by protection of the reinforcing element 40, it is avoided that the inner tube 20 is bent at the femoral artery incision due to the leg bending action or other actions of the patient to affect the process of introducing or discharging the fluid into or out of the balloon portion 10.

In a specific embodiment of the present invention, as shown in fig. 1, a distance is provided between the distal end portion of the outer tube 30 and the proximal end portion of the balloon portion 10, so that the outer tube 30 is prevented from affecting the expansion and contraction of the balloon portion 10.

Further, the distal end of the outer tube 30 is provided with a reducing structure extending toward the port, and the distal end of the outer tube 30 is fixedly connected to the outer wall of the inner tube 20, which may be specifically bonded by an epoxy adhesive.

In a specific embodiment of the present invention, as shown in fig. 1 and 2, the reinforcing member 40 is a tubular structure made of nickel-titanium metal, the reinforcing member 40 of the tubular structure is sleeved on the tube body of the inner tube 20, and the rigidity of the nickel-titanium metal protects the inner tube 20, thereby avoiding the bending of the inner tube 20 caused by the movement of the patient.

Further, in this embodiment, the body of the tubular reinforcing element 40 is a solid structure or a hollow structure, and the tubular reinforcing element 40 is preferably a hollow structure for saving material and facilitating fixing.

In a specific embodiment of the present invention, as shown in fig. 1 and 3, the reinforcing member 40 is an elongated structure made of nickel-titanium metal, and the reinforcing member 40 of the elongated structure and the inner tube 20 are juxtaposed in the lumen of the outer tube 30. The strip-shaped structure made of nickel titanium metal with certain rigidity is arranged beside the inner tube 20 in parallel, so that the auxiliary support of the inner tube 20 is realized, and the condition that the inner tube is bent due to the influence of external acting force is avoided. Further, the body of the reinforcement 40 with a long strip-shaped structure is a solid structure or a hollow structure, and in view of saving materials, the body of the reinforcement 40 with a long strip-shaped structure is preferably a hollow structure.

In a specific embodiment of the present invention, as shown in fig. 1 and 4, the reinforcing member 40 is a reinforced tube filled with fluid and having a certain pressure, and the reinforced tube is juxtaposed with the inner tube 20 in the lumen of the outer tube 30. Further, the distal end of the reinforcing tube is closed, and the proximal end is open for filling a fluid to form a tube body with a certain pressure.

According to the present invention, the position of the reinforcement member 40 can be selected within a wide range, and in particular, in a particular embodiment of the present invention, the proximal end portion of the reinforcement member 40 is located at the proximal end portion of the outer tube 30, and the distal end portion of the reinforcement member 40 is located at the position where the outer tube 30 extends 1/3 distance, 1/2 distance, or the distal end portion of the outer tube 30 from the proximal end portion to the distal end portion.

And further preferably, the distal end of the reinforcing member 40 is preferably located at a position where the outer tube 30 extends 1/3 of the distance from the proximal end to the distal end, so as to prevent excessive insertion of the reinforcing member 40 from causing excessive burden to the patient and ensure effective protection of the position where the inner tube 20 is easily bent, in order to prevent bending of the inner tube 20 at the femoral artery incision of the patient.

The utility model also provides a sacculus pump in aorta with above-mentioned local anti catheter subassembly of buckling, through the utility model provides an application of local anti catheter subassembly in sacculus pump in aorta, the effectual sacculus of having avoided buckling because of the inner tube and causing fails to reach anticipated air inflation volume, and then leads to the systolic pressure to reduce the condition emergence that is not obvious or diastolic pressure boost is not higher than the systolic pressure maximum value.

The foregoing shows and describes the general principles, essential features, and features of the invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the description of the above embodiments and the description is only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and these changes and modifications are all within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A partial kink-resistant catheter assembly comprising a balloon portion (10) and an inner tube (20), the distal end of the inner tube (20) being connected to the proximal end of the balloon portion (10) for introducing and discharging fluid into and out of the balloon portion (10), characterized in that the inner tube (20) is sheathed with an outer tube (30), the outer tube (30) being made of a hard material; and/or the outer tube (30) is further provided with a reinforcement (40) arranged extending in the axial direction.

2. The local kink-resistant catheter assembly according to claim 1, wherein a distance is provided between a distal end of the outer tube (30) and a proximal end of the balloon portion (10).

3. The partial kink-resistant catheter assembly according to claim 2, wherein the distal end of said outer tube (30) is provided as a reduced diameter structure extending in the direction of the port, and the distal end of said outer tube (30) is fixedly connected to the outer wall of said inner tube (20).

4. The localized kink-resistant catheter assembly according to claim 1, wherein the reinforcement member (40) is a tubular or elongated structure fabricated from nitinol;

wherein the reinforcement (40) of the tubular structure is sleeved on the tube body of the inner tube (20);

the reinforcing piece (40) of the long strip-shaped structure and the inner tube (20) are arranged in parallel in the tube cavity of the outer tube (30).

5. The local kink-resistant catheter assembly according to claim 4, wherein the body of the tubular or elongated structural reinforcement (40) is of solid or hollowed construction.

6. The partial kink-resistant catheter assembly according to claim 1, wherein said reinforcement (40) is a fluid-filled and pressure-bearing reinforced tube juxtaposed within the lumen of said outer tube (30) with said inner tube (20).

7. The localized kink-resistant catheter assembly of claim 6, wherein the distal end of the stiffening tube is closed and the proximal end is open for filling with a fluid to form a tube with a pressure.

8. The partial kink-resistant catheter assembly according to any one of claims 1-7, wherein a proximal end of the reinforcing element (40) is located at a proximal end of the outer tube (30), and a distal end of the reinforcing element (40) is located at a 1/3 distance, a 1/2 distance, or a distal end of the outer tube (30) extending from the proximal end to the distal end of the outer tube (30).

9. An intra-aortic balloon pump having the partial kink-resistant catheter assembly of claim 8.