CN218793320U

CN218793320U - Connecting device for ECMO interventional therapy

Info

Publication number: CN218793320U
Application number: CN202223180050.1U
Authority: CN
Inventors: 葛洪霞; 李姝�; 任珍; 田慈; 李硕; 马青变
Original assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Current assignee: Peking University Third Hospital Peking University Third Clinical Medical College
Priority date: 2022-11-28
Filing date: 2022-11-28
Publication date: 2023-04-07
Anticipated expiration: 2032-11-28

Abstract

The utility model discloses a connecting device for ECMO interventional therapy, which comprises a main catheter and a side branch catheter; the two ends of the main conduit are used for connecting the existing ECMO pipeline; the collateral branch catheter comprises a sealing sheet, a fixed tube and a plugging cap, one end of the fixed tube is integrally formed with the side wall of the main catheter, the other end of the fixed tube is connected with the plugging cap in a sealing manner, and the plugging cap is used for sealing the collateral branch catheter; the fixed pipe is communicated with the main guide pipe and is connected with the main guide pipe in an inclined mode; the gasket sets up fixed pipe is close to the one end of shutoff cap, it is used for preventing that external gas from getting into fixed pipe. The utility model relates to a medical device technical field can solve prior art, has easy bleeding air inlet, operation complicacy, influence the blood velocity of flow, with current ECMO pipeline suitability subalternation technical problem.

Description

Connecting device for ECMO interventional therapy

Technical Field

The utility model relates to a medical connecting device field, more specifically relates to a connecting device for ECMO intervenes treatment.

Background

Extracorporeal membrane oxygenation (ECMO), abbreviated as extracorporeal membrane oxygenation, is a new advanced life support technology for rescuing critically ill patients. The device can be used for external respiration and/or circulation support of patients with sudden cardiac arrest (sudden death), patients with acute severe cardiopulmonary failure and patients with other serious threats to respiratory circulation functions, and valuable time is won for the treatment of the etiology of the critically ill patients. At present, an ECMO connecting pipe used clinically has a single function, and a multifunctional ECMO connecting pipe which is good in adaptability with the existing ECMO connecting pipe does not exist, so that the requirement of clinical actual work is difficult to meet.

The existing ECMO side branch catheters and patent designs have the following problems: 1. because ECMO patients often need to carry out distal perfusion treatment, so as to avoid avascular necrosis of the distal limb at the side of the arterial intravascular cannula, the ECMO patients are usually connected by a three-way infusion connector clinically at present; 2. the etiology of most patients with cardiac and respiratory arrest is cardiogenic, so that when ECMO is used for maintaining the cardiopulmonary function, intravascular interventional treatment such as percutaneous coronary intervention and intra-aortic balloon counterpulsation is needed. Currently, the aorta of a patient needs to be repositioned clinically for puncture interventional operation. Patients usually have cardiogenic shock, poor radial artery perfusion, low blood pressure and weak pulsation, and have great puncture difficulty when the radial artery is used as an access because the artery spasm contracts and is slender after a large amount of vasoactive medicines are applied. An ECMO artery catheter is placed in one femoral artery, and if the contralateral femoral artery is selected, an ECMO vein catheter is also placed close to the femoral vein, so that adhesive dressing needs to be removed again and disinfected when the artery is punctured, and the risk of blood flow infection is increased; due to the whole-body heparinization of the patient, if puncture artery related complications such as local hematoma and arteriovenous fistula occur, the risk of lower limb ischemia on the same side is increased, and the above conditions can bring greater technical difficulty, time cost and probability of related complications to interventional operation treatment; 3. the blood vessel suturing device is often used for suturing a large blood vessel when an ECMO patient is taken out, but a guide wire cannot be preset in an existing pipeline, a puncture needle is used for penetrating through an ECMO connecting pipe to be placed into the guide wire after an ECMO connecting pipeline is generally disinfected clinically, the infection and bleeding risks are high, the guide wire is easy to separate during tube drawing, the operation is complex and irregular, and serious complications are easy to cause.

Therefore, how to provide an oil flowmeter transportation device capable of effectively avoiding transportation damage of the oil flowmeter calibration device becomes a technical problem to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a connecting device for ECMO intervenes treatment to solve the technical problem among the prior art, can be used to ECMO patient's distal end perfusion treatment, percutaneous coronary intervention art, sacculus counterpulsation in the aorta art, and can preset the seal wire when ECMO patient withdraws the machine, use the blood vessel stitching instrument to sew up the great vessel.

According to an aspect of the present invention, there is provided a connection device for ECMO interventional therapy, comprising a main catheter and a side branch catheter;

the two ends of the main guide pipe are used for connecting the existing ECMO pipeline;

the side branch catheter comprises a sealing sheet, a fixing tube and a plugging cap, one end of the fixing tube is integrally formed with the side wall of the main catheter, the other end of the fixing tube is connected with the plugging cap in a sealing mode, and the plugging cap is used for sealing the side branch catheter; the fixed pipe is communicated with the main guide pipe, and the fixed pipe and the main guide pipe are connected in an inclined manner; the gasket sets up fixed pipe is close to the one end of shutoff cap, it is used for preventing that external gas from getting into fixed pipe.

Optionally, according to a connecting device for ECMO intervenes treatment, the one end of main duct is the stereoplasm base, the outward appearance of stereoplasm base is the notch cuttype, and the biggest external diameter is greater than current ECMO connecting line's internal diameter, make it can with ECMO connecting line is inside to cup joint fixedly.

Optionally, according to a connecting device for ECMO intervenes treatment, the other end of main duct is soft sleeve pipe, soft sleeve pipe is hollow cylinder shape, its biggest internal diameter is less than current ECMO and puts the terminal external diameter of pipe, make it can with ECMO puts the terminal outside of pipe and cup joints fixedly.

Optionally, according to the connecting device for ECMO intervenes treatment, the gasket is one-way valve, and the mitre rice style of calligraphy joint-cutting is seted up at the middle part, and it can pass tee bend infusion joint or seal wire.

Optionally, according to the utility model discloses a connecting device for ECMO intervenes treatment, fixed pipe is kept away from the one end outside of main duct is equipped with the screw thread, the shutoff cap with fixed pipe screw thread connects soon.

Optionally, according to the utility model discloses a connecting device for ECMO intervenes treatment, fixed pipe with the inclination of main duct is 25 to 35, just fixed pipe with the inboard and the outside of the junction of main duct all lead the fillet design.

Compared with the prior art, the utility model comprises a main duct and a side branch duct, wherein one end of the main duct is a step-shaped hard base which can be fixedly sleeved with the existing ECMO connecting pipeline, and the other end of the main duct is a soft sleeve which can be fixedly sleeved with the end of the existing ECMO pipe; the side branch catheter comprises a sealing sheet, a fixing tube and a plugging cap, the sealing sheet is a one-way valve, a beveled cross-shaped cutting seam is formed in the middle of the sealing sheet, the sealing sheet can be fixed at the far end of the side branch catheter by the fixing tube, threads are arranged on the outer side of the far end of the fixing tube, and the plugging cap is screwed and sealed with the far end of the fixing tube.

The utility model discloses can be used to ECMO patient's distal end perfusion treatment, percutaneous coronary artery intervention art, sacculus counterpulsation art in the aorta to can preset the seal wire when ECMO patient withdraws the machine, use the blood vessel stitching instrument to sew up the great vessel. The utility model discloses the function is various, the simple operation, use flexibility, low in cost, can effectively improve clinical practicality and be favorable to further popularization and application.

Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments of the invention, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic long-axis cross-sectional view of the present invention;

fig. 3 is an exploded view of the side branch catheter of the present invention;

fig. 4 is a schematic view of the present invention for distal perfusion treatment;

FIG. 5 is a schematic view of the present invention used in percutaneous coronary intervention or intra-aortic balloon counterpulsation;

fig. 6 is a schematic diagram of tube drawing after guide wire presetting during machine withdrawing.

Description of reference numerals: 1. a main duct; 11. a connection base; 12. a soft sleeve; 2. a side branch catheter; 21. sealing the sheet; 22. a fixed tube; 23. a plugging cap; 3. an ECMO connecting pipeline; 4. placing an ECMO pipe; 5. a three-way infusion connector; 6. a guide wire; 7. a distal irrigation catheter; 8. a guide catheter; 9. an intra-aortic balloon counterpulsation catheter.

Detailed Description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

According to fig. 1 to 3, the present invention provides a connection device for ECMO interventional therapy, comprising a main catheter 1 and a side branch catheter 2;

the main duct 1 is used at both ends for connecting existing ECMO pipes.

Collateral branch pipe 2 includes gasket 21, fixed pipe 22 and shutoff cap 23, and the one end of fixed pipe 22 is formed with the lateral wall integration of main conduct 1, the other end and shutoff cap 23 sealing connection, and shutoff cap 23 is used for closing collateral branch pipe 2, and when collateral branch pipe 2 was in not using state, shutoff cap 23 was in the normal close state, guaranteed fixed pipe 22's leakproofness. The fixed pipe 22 is communicated with the main duct 1 and is connected with the main duct in an inclined way; a sealing fin 21 is provided at an end of the fixing tube 22 near the plugging cap 23 for preventing external air from entering the fixing tube 22.

Further, one end of the main conduit 1 is a hard base 11, the outer surface of the hard base 11 is in a step shape, the maximum outer diameter of the hard base is larger than the inner diameter (namely 9.5 mm) of the existing ECMO connecting pipeline 3, and the main conduit and the ECMO connecting pipeline are in interference fit, so that the main conduit and the ECMO connecting pipeline 3 can be fixedly sleeved.

Still further, the other end of main duct 1 is soft sleeve pipe 12, and soft sleeve pipe 12 is hollow cylinder shape, and its biggest internal diameter is less than the terminal external diameter of current ECMO poling 4, and both are interference fit, make it can with ECMO poling 4 terminal outside cup joint fixedly.

Furthermore, the sealing sheet 21 is a one-way valve, the middle part of which is provided with a bevel-cutting m-shaped cutting seam which can pass through the three-way transfusion joint 5 or the guide wire 6. The flap of the sealing sheet 21 can only be opened towards the main catheter 1, i.e. the guide wire 6 and the three-way infusion head can only be extended towards the main catheter 1.

Furthermore, the outer side of one end of the fixing pipe 22 far away from the main pipe 1 is provided with a thread, and the plugging cap 23 is screwed with the fixing pipe 22, so that the sealing performance and the safety are further enhanced.

Further, the inclination angle of the fixed tube 22 and the main catheter 1 is 25 ° to 35 °, and the inner side and the outer side of the joint of the fixed tube 22 and the main catheter 1 are both rounded, and the inclined arrangement helps the guide wire 6 to effectively extend into the main catheter 1. The rounded design prevents the guide wire 6 from being broken at the corners.

Referring to fig. 5, a first embodiment of the present invention is a method of using the connection device of any one of the above embodiments for percutaneous coronary intervention, and comprises the steps of:

s10, sleeving and fixing the main pipe 1 between the ECMO connecting pipeline 3 and the tail end of the ECMO arranging pipe 4;

s11, enabling the opening end of the side branch catheter 2 to face the direction of the far end of the patient;

s12, when the percutaneous coronary intervention operation is carried out, the blocking cap 23 is taken down, and the guide wire 6 is placed along the sealing piece 21;

s13, placing the guide catheter 7 along the guide wire 6 to a corresponding coronary artery orifice, wherein the guide catheter 7 is sleeved on the guide wire 6 and extends along the guide wire 6;

s14, removing the guide wire 6, carrying out contrast examination, and further placing a balloon or a stent.

Referring again to fig. 5, a second embodiment of the present invention is a method of using the connection device of any of the above embodiments for intra-aortic balloon counterpulsation, and the steps of:

s20, sleeving and fixing the main pipe 1 between the ECMO connecting pipeline 3 and the tail end of the ECMO arranging pipe 4;

s21, enabling the opening end of the side branch catheter 2 to face the far end direction of the patient;

s22, when the intra-aortic balloon counterpulsation operation is carried out, the blocking cap 23 is taken down, and the guide wire 6 is placed along the sealing sheet 21 to reach the aortic arch;

s23, placing an intra-aortic balloon counterpulsation catheter 8 to the aortic arch along the guide wire 6, wherein the intra-aortic balloon counterpulsation catheter 8 is mainly sleeved on the guide wire 6 and extends along the guide wire 6;

and S24, removing the guide wire 6, connecting a high-pressure connecting pipe, and then connecting to a counterpulsation pump machine.

In the third embodiment of the present invention, as shown in fig. 4, a method for using the preset guide wire 6 when the ECMO patient is taken out of the machine uses the connecting device of any one of the above embodiments, and comprises the following steps:

s30, sleeving and fixing the main guide pipe 1 between the ECMO connecting pipeline 3 and the tail end of the ECMO placing pipe 4;

s31, enabling the opening end of the side branch catheter 2 to face the far end direction of the patient;

s32, when the ECMO patient is taken out, the blocking cap 23 is taken down, and the guide wire 6 is placed along the sealing piece 21;

s33, the ECMO tube placing 4 is pulled out, a blood vessel stitching instrument is placed along the guide wire 6, and the large blood vessel of the tube is stitched.

A fourth embodiment of the present invention is a method of using a connection device for distal perfusion treatment of ECMO patients according to fig. 6, wherein the method comprises the steps of:

s40, the main pipe 1 is sleeved and fixed between the ECMO connecting pipeline 3 and the tail end of the ECMO arranging pipe 4;

s41, enabling the opening end of the side branch catheter 2 to face the far end direction of the patient;

s42, removing the blocking cap 23, screwing one side of the three-way infusion joint 5 on the thread of the fixed pipe 22, and determining that the inner protrusion of the three-way infusion joint 5 penetrates through the sealing sheet 21;

s43, connecting the other side of the three-way infusion joint 5 with a far-end perfusion catheter 7;

and S44, adjusting the far-end perfusion flow rate through the three-way transfusion joint 5 according to the percutaneous blood oxygen saturation of the far-end perfusion limb and the blood vessel B ultrasonic.

The utility model discloses can be used to ECMO patient's distal end perfusion treatment, percutaneous coronary artery intervention art, sacculus counterpulsation in the aorta to can preset seal wire 6 when ECMO patient withdraws the machine, use the blood vessel stitching instrument to sew up the great vessel. The utility model discloses the function is various, the simple operation, use flexibility, low in cost, can effectively improve clinical practicality and be favorable to further popularization and application.

Although certain specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A connection device for ECMO interventional procedures, comprising a main catheter and a side branch catheter;

the two ends of the main conduit are used for connecting the existing ECMO pipeline;

the collateral branch catheter comprises a sealing sheet, a fixed tube and a plugging cap, one end of the fixed tube is integrally formed with the side wall of the main catheter, the other end of the fixed tube is connected with the plugging cap in a sealing manner, and the plugging cap is used for sealing the collateral branch catheter; the fixed pipe is communicated with the main guide pipe and is connected with the main guide pipe in an inclined mode; the gasket sets up fixed pipe is close to the one end of shutoff cap, it is used for preventing that external gas from getting into fixed pipe.

2. The connection device for ECMO interventional therapy according to claim 1, wherein one end of the main conduit is a hard base, the outer surface of the hard base is stepped, and the maximum outer diameter is larger than the inner diameter of the existing ECMO connection pipeline, so that the main conduit can be fixedly sleeved with the interior of the ECMO connection pipeline.

3. The connection device of claim 2, wherein the other end of the main conduit is a soft sleeve, and the soft sleeve is hollow and cylindrical, and has a maximum inner diameter smaller than the outer diameter of the end of the existing ECMO tube, so that the soft sleeve can be fixedly sleeved with the outside of the end of the ECMO tube.

4. The connection device of claim 1, wherein the sealing piece is a one-way valve, and the middle part of the sealing piece is provided with a beveled mitre-shaped slit, which can pass through a three-way infusion joint or a guide wire.

5. The connection device for ECMO interventional therapy according to claim 1, wherein the fixing tube is provided with a thread at an outer side of an end thereof away from the main tube, and the plugging cap is screwed with the thread of the fixing tube.

6. The connection device for ECMO interventional therapy according to claim 1, wherein the inclination angle of the fixed tube and the main tube is 25-35 ° and the connection of the fixed tube and the main tube is designed with rounded inner and outer sides.