阅读说明：本技术 Ecmo侧支连接管 (ECMO collateral branch connecting pipe ) 是由 刘淼淼 陈方圆 于 2019-12-16 设计创作，主要内容包括：本发明公开了ECMO侧支连接管,涉及医用导管技术领域,为解决现有技术中,ECMO无专用连接管,普通连接管存在的容易出血进气、操作复杂等技术问题,本发明的技术方案如下：本发明的技术方案如下：包括基座、管体及三通阀；所述基座包括密封片及盖板,所述基座开设贯通的通孔,所述密封片为单向活瓣,中部开设十字型切缝,所述切缝的四周设置环形凸起,所述盖板的中部开设通孔,并将密封片固定于基座的通孔孔口处,所述盖板挤压环形凸起,使所述密封片的切缝区域向外凸出呈弧形；所述管体的一端与基座的通孔连通,另一端设置三通阀。(The invention discloses an ECMO side branch connecting pipe, relates to the technical field of medical catheters, and aims to solve the technical problems that in the prior art, ECMO does not have a special connecting pipe, and a common connecting pipe is easy to bleed and intake, complex to operate and the like, wherein the technical scheme of the invention is as follows: the technical scheme of the invention is as follows: comprises a base, a pipe body and a three-way valve; the base comprises a sealing sheet and a cover plate, the base is provided with a through hole, the sealing sheet is a one-way valve, the middle part of the sealing sheet is provided with a cross-shaped cutting seam, annular bulges are arranged around the cutting seam, the middle part of the cover plate is provided with a through hole, the sealing sheet is fixed at the hole opening of the through hole of the base, and the cover plate extrudes the annular bulges to ensure that the cutting seam area of the sealing sheet protrudes outwards to form an arc shape; one end of the pipe body is communicated with the through hole of the base, and the other end of the pipe body is provided with a three-way valve.)

The ECMO side branch connecting pipe is characterized by comprising a base, a pipe body and a three-way valve; the base comprises a sealing sheet and a cover plate, the base is provided with a through hole, the sealing sheet is a one-way valve, the middle part of the sealing sheet is provided with a cross-shaped cutting seam, annular bulges are arranged around the cutting seam, the middle part of the cover plate is provided with a through hole, the sealing sheet is fixed at the hole opening of the through hole of the base, and the cover plate extrudes the annular bulges to ensure that the cutting seam area of the sealing sheet protrudes outwards to form an arc shape; one end of the pipe body is communicated with the through hole of the base, and the other end of the pipe body is provided with a three-way valve.

2. The ECMO side branch connection tube of claim 1 wherein the cover plate has an opening extending outwardly therethrough, and the extension terminates in a mounting thread.

3. The ECMO side branch connection pipe of claim 1 wherein the end of the pipe body extends through the three-way valve and beyond a section, the extension being threaded for installation.

4. The ECMO side branch connection pipe of claim 1 wherein the base has a groove in an end surface thereof to which the sealing strip is attached, and the sealing strip is inserted into the groove.

5. The ECMO side branch connecting pipe according to claim 4, wherein the mounting end face of the cover plate and the base has an annular pressing block, the outer side wall of the annular pressing block is fixedly connected with the groove of the base, and the end face is used for pressing the annular protrusion of the sealing sheet.

6. The ECMO side branch connection tube of claim 5, wherein the annular pressure block is bonded to the groove by adhesive, a threaded connection or a snap fit assembly.

Technical Field

The invention relates to the technical field of medical catheters, in particular to an ECMO side branch connecting pipe.

Background

ECMO is an English abbreviation of extracorporeal membrane lung oxygenation, is one of important medical technologies commonly used for rescuing the life of critical patients and transplanting patients for sequential perfusion treatment at present, and aims to replace the functions of the heart and/or the lung of a patient so as to ensure that the organism and important organs of the patient have sufficient blood perfusion and oxygen supply. ECMO is essentially an improved novel artificial heart-lung machine, which not only can play the role of an artificial heart, but also can play the role of an artificial lung. In ECMO, blood is drawn through the veins, oxygenated by the membrane lungs, and carbon dioxide is removed. The blood after gas exchange can return to the vein or artery under the action of the centrifugal pump according to the clinical treatment requirement, and can respectively play the role of external respiration support and cardiac support. When the lung function or the heart function of a patient is seriously damaged, ECMO can bear the oxygen exchange function of the lung or can bear the blood pumping function of the heart, thereby striving for precious time for rescue treatment of the patient, transplantation of the patient at the end stage and other sequential perfusion treatments.

CRRT is an english abbreviation of continuous renal replacement therapy, and is a blood purification treatment technique for continuously and slowly removing water and solutes by extracorporeal blood purification to replace renal function. In the emergency treatment process, the ECMO is matched with the CRRT for use, and meanwhile, the ECMO can replace an artificial heart lung and an artificial kidney. In the prior art, the ECMO and the CRRT are directly connected through a common connecting pipe, and because the blood flow rate in the ECMO pipeline is extremely high, bleeding and air intake are easy to occur at the connecting part of the ECMO pipeline and the CRRT pipeline, so that a patient bleeds or gas embolism is caused; meanwhile, the internal pressure of the ECMO pipeline is equivalent to the arterial blood pressure, the pressure is extremely high, the operation steps are complicated during clinical operations such as blood collection and the like, and the serious complications of patients are caused by easy bleeding.

Disclosure of Invention

In order to solve the technical problems that the ECMO does not have a special connecting pipe in the prior art, and a common connecting pipe has complex operation, easy bleeding and air intake and the like, the technical scheme of the invention is as follows:

the ECMO side branch connecting pipe comprises a base, a pipe body and a three-way valve; the base comprises a sealing sheet and a cover plate, the base is provided with a through hole, the sealing sheet is a one-way valve, the middle part of the sealing sheet is provided with a cross-shaped cutting seam, annular bulges are arranged around the cutting seam, the middle part of the cover plate is provided with a through hole, the sealing sheet is fixed at the hole opening of the through hole of the base, and the cover plate extrudes the annular bulges to ensure that the cutting seam area of the sealing sheet protrudes outwards to form an arc shape; one end of the pipe body is communicated with the through hole of the base, and the other end of the pipe body is provided with a three-way valve.

Furthermore, the through hole orifice of the cover plate extends outwards, and the tail end of the extending section is provided with a mounting thread.

Furthermore, the tail end of the pipe body penetrates through the three-way valve and extends out of one section, and the extending section is provided with mounting threads.

Furthermore, a groove is formed in the mounting end face of the base and the sealing sheet, and the sealing sheet is embedded in the groove.

Furthermore, the mounting end face of the cover plate and the base is provided with an annular pressing block, the outer side wall of the annular pressing block is fixedly connected with the groove of the base, and the end face of the annular pressing block is used for extruding the annular protrusion of the sealing piece.

Further, the annular pressing block is connected with the groove through adhesive bonding, threaded connection or a buckle assembly.

Compared with the prior art, the ECMO side branch connecting pipe has the beneficial effects that:

1. the one-way valve resists arterial pressure, does not generate blood return, and does not cause bleeding and air intake due to the clinical operation problems of pipeline connection, blood sampling, specimen retention and the like;

2. the threads at the two ends are designed, so that the operation of pipeline connection and the like is facilitated, and the pipeline is not easy to fall off;

3. the tee joint is arranged, the channel at the position where the valve points is closed, so that the operation of clinical blood sampling and the like is convenient to treat, and air is not easy to enter; and if the unfavorable conditions such as air intake and the like occur, the gas can be discharged through the three-way valve.

Drawings

FIG. 1 is a schematic view of a sealing plate and cover plate of the present invention prior to installation;

FIG. 2 is a schematic view of the sealing plate and cover plate of the present invention after installation;

FIG. 3 is a schematic view of a sealing disc according to the present invention;

figure 4 is a schematic view of an ECMO side branch connection tube in one embodiment.

Detailed Description

The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1-3, the ECMO side branch connecting tube of the present invention includes a tube body 1, a base 2 and a three-way valve 3; the left side of the drawing is partially cut away, the base 2 comprises a sealing sheet 4 and a cover plate 7, the base 2 is provided with a through hole 8, the middle part of the sealing sheet 4 is provided with a one-way valve 5 with a cross-shaped cutting seam, the periphery of the one-way valve 5 is provided with an annular bulge 6, the middle part of the cover plate 7 is provided with the through hole 8, the sealing sheet 4 is fixed at the hole of the through hole 8 of the base 2, and the cover plate 7 extrudes the annular bulge 6 to ensure that the area of the cutting seam 5 of the sealing sheet 4 protrudes outwards; one end of the pipe body 1 is communicated with the through hole 8 of the base 2, and the other end is provided with a three-way valve 3. The area of the cutting seam 5 protrudes outwards to form an arc shape, so that a part of deformation of the sealing sheet 4 is prefabricated, when other pipelines such as CRRT (Crrt transform RT) and the like are connected, or clinical operations such as blood drawing, specimen taking and the like are performed, the syringe or the pipeline penetrates through the sealing sheet 4 from the left side of the base 2, the one-way valve 5 with the cutting seam is propped open and clings to the outer side of the syringe or the pipeline to form one-way sealing, bleeding and air intake are prevented, after the clinical operations are completed, the syringe or the pipeline is pulled out leftwards, the cutting seam is pulled leftwards by the friction force of the outer wall of the syringe or the pipeline to the position of the one-way valve 5, but the position of the one-way valve 5 always keeps an outward convex arc shape and cannot be.

As shown in fig. 4, the opening of the through hole 8 of the cover plate 7 extends outwards to form an extension tube 9, and the tail end of the extension tube 9 is provided with mounting threads which can be connected with an infusion set, a CRRT pipeline and the like.

The end of the tube body 1 is provided with a three-way valve 3, the channel at the pointed part of the valve handle is closed, the other two channels are opened, when clinical operations such as blood drawing, specimen collection and the like are carried out, the valve handle is opened after the injector is connected, bleeding and air intake are avoided, and if gas exists in the tube, the gas can be discharged through the valve.

The tail end of the pipe body 1 penetrates through the three-way valve 3 and extends out of one section, and the extending section is provided with mounting threads and is used for being connected with an ECMO pipeline.

In order to facilitate the assembly of the cover plate 7 and the sealing plate 4 on the base 2, the preferred structure of the invention is as follows: the mounting end surfaces of the base 2 and the sealing sheet 4 are provided with grooves, and the sealing sheet 4 is embedded in the grooves. The mounting end faces of the cover plate 7 and the base 2 are provided with annular pressing blocks, the outer side walls of the annular pressing blocks are fixedly connected with the grooves of the base 2, and the end faces are used for extruding the annular protrusions 6 of the sealing pieces 4. The annular pressing block is connected with the groove through adhesive bonding, threaded connection or a buckle assembly.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.