CN201067570Y

CN201067570Y - Left ventricle auxiliary catheter device

Info

Publication number: CN201067570Y
Application number: CNU2007200549917U
Authority: CN
Inventors: 黄石安
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-08-01
Filing date: 2007-08-01
Publication date: 2008-06-04
Anticipated expiration: 2017-08-01

Abstract

The utility model discloses a left-ventricle auxiliary conduit device, which is a curly conduit with a one-way valve and a saccule. A curly end of the conduit is the end close to the heart while the other end is remote to the heart, the saccule is attached on the surface of the conduit, and the one-way valve is positioned on the conduit with 5 to 8cm away from the curly end of the conduit; a side pore with a moving flap valve is arranged on the conduit at the side of the one-way valve that is remote from the curly end of the conduit, the curly end of the conduit is provided with a pore, the saccule is connected to an air pump through a saccule connecting pipe, the end remote to the heart of the conduit is connected to a blood pump, and the expanded volume of the saccule is 40ml. the utility model is an auxiliary device that can relieve the front and rear loads of the left ventricle, and is characterized by small wound for patients, convenient operation, economy, and simple structure.

Description

Left ventricle subsidiary conduit device

Technical field

This utility model relates to field of medical devices, especially a kind of left ventricle subsidiary conduit device.

Background technology

The serious symptom heart failure is mainly seen in various organic heart diseasies and causes weakening of serious myocardial contraction, the remaining blood of left ventricle end-systole increases, cause pulmonary venous pleonaemia, pulmonary edema, clinical manifestation is serious dyspnea, even cardiogenic shock appears, medication effect is poor, the case fatality rate height, whole world heart failure patient is up to more than 2,000 ten thousand, China heart failure patient also has millions of, and the Therapeutic Method of serious symptom heart failure can be divided three classes substantially: internal medicine treatment, mechanical cycles supports and heart transplantation that internal medicine treatment is more traditional method, but there are a large amount of patients to support DeGrain, and develop into serious symptom heart failure in latter stage at end because of traditional heart tonifying.The most effective Therapeutic Method of whole serious symptom heart failure in latter stage is heart transplantation, and being subjected to restriction for heart shortage, 90% patient has no idea to realize heart transplantation, when waiting for suitable donor, patient's cardiac function may continue to worsen, and causes multi-functional organ failure at last.Patient's ordinary circumstance can be stablized and improve to the mechanical cycles supportive device, as the excessive bridge of heart transplantation, moreover, and along with the improvement that mechanical cycles is supported, may substituting as heart transplantation.Its outstanding advantage is to have avoided transplanting the immunologic rejection of bringing, and the taking for a long time of immunosuppressant can't obtain patients for the heart hopes of taking can for those, thus latter stage at end serious symptom heart failure patient circulatory failure the machinery support come into one's own day by day.In addition, many clinically serious symptom heart failure patient cardiac dysfunctions are reversible, comprise the pass through patient of skin percutaneous coronary intervention of postcardiac surgery is hanged down cardiogenic shock behind cardiac output, the myocardial infarction and complicated coronary artery pathological changes.Some is invalid to Drug therapy among these patients, effectively helps the patient to pull through their difficulties by the mechanical cycles support and is survived.As seen, the mechanical cycles supportive device can be used as the transition bridge of heart transplantation, the substitute of heart transplantation and the bridge of cardiac rehabilitation.

Existing mechanical circulation supportive device has IABC, although it can alleviate ventricular afterload effectively, but the serious symptom heart failure seriously descends owing to myocardial contraction, the remaining blood of end-systole is still more, therefore IABC can not directly reduce cardiac preload, the left ventricular function of necessary dependence itself for the impaired serious patient of ventricular function own, can not be brought into play the support effect because of the IABC auxiliary quantity is too low sometimes; Ventricular assist device is that blood drainage with atrium or ventricle is to auxiliary device, different with IABC is that this device can effectively reduce cardiac preload, left ventricular assist device is guided to aorta with the blood of left atrium or left ventricle by donkey pump, can reach and alleviate pulmonary venous pleonaemia, the appearance of chamber, left side donkey pump obviously improves serious symptom heart failure salvage success rate, but there is following shortcoming in it: inserting of left chamber donkey pump needs open chest surgery, wound is bigger, and the serious symptom heart failure patient often is impatient at operation and forfeiture chance even dead on operating-table; Guiding to aortal blood flow from left chamber donkey pump is persistence blood flow and nonpulsatile flow is unfavorable for the perfusion of capillary bed; Chamber, left side donkey pump is guided to aorta with the blood of left atrium and can be alleviated the left ventricle preload greatly, aortal full obviously increase, mean that left chamber afterload increases, increase the weight of the acting and the oxygen consumption of ventricle, for conventional this class device and infeasible that uses of critical patient.

The utility model content

This utility model purpose provide a kind of to the patient traumatic little, can alleviate left ventricle subsidiary conduit device load, easy and simple to handle, economic, simple in structure before and after the ventricle.

For solving the problems of the technologies described above, left ventricle subsidiary conduit device of the present utility model is the curling shape conduit that has one-way valve and sacculus, the crimp end of conduit is a proximal part, the other end is a distal end, sacculus is attached to catheter surface, one-way valve is located on the duct conduits apart from conduit crimp end 5-8cm, on conduit, be provided with the side opening of band flap valve away from conduit crimp end one-way valve one side, the crimp end of conduit is provided with aperture, sacculus is connected with air pump by the sacculus connection tube, and the distal end of conduit is connected with blood pump.

Volume during described inflation is 40ml.

After adopting above-mentioned guide-tube structure, realized that replacing opening breast with the intervening mode implantation inserts, reduced patient's wound, avoided the serious symptom heart failure patient to be impatient at operation and forfeiture chance even death on operating-table; The head end of conduit avoids the straight peen conduit to be close to locular wall and can not to extract blood out for the shape that curls; This device is extracted left ventricle blood out at systole, diastole is pumped blood in early days, diastole is full with sacculus late period, the aorta inner blood fully can be pressed to tip, increase the perfusion of capillary bed, therefore both can alleviate the preload of left ventricle, can alleviate the afterload of left ventricle again, have the advantage of existing ventricular assist device and intra aortic balloon counterpulsation concurrently, the preparatory stroke aortic flow helps the perfusion of capillary bed.

Description of drawings

Below in conjunction with the drawings and specific embodiments this utility model is described in further detail:

Fig. 1 is this utility model sketch map.

Among the figure: 1 conduit, 11 apertures, 12 distal ends, 2 sacculus, 3 sacculus connection tubes, 4 one-way valve, 5 flap valves, 6 side openings.

The specific embodiment

Shown in Figure 1, left ventricle subsidiary conduit device of the present utility model is the curling shape conduit 1 that has one-way valve 4 and sacculus 2, when using, the crimp end of conduit 1 inserts ventricle, therefore the crimp end of conduit 1 is a proximal part, the other end is a distal end, sacculus is attached to catheter surface, one-way valve 4 is located on conduit 1 pipeline apart from conduit crimp end 5-8cm, on conduit, be provided with the side opening 6 of band flap valve 5 away from conduit crimp end one-way valve 4 one sides, the crimp end of conduit 1 is provided with aperture 11, sacculus 2 is connected with air pump by sacculus connection tube 3, and the distal end 12 of conduit is connected with blood pump, and air pump and blood pump drive by driving device.Volume when above-mentioned sacculus 2 expands is 40ml; driving device mainly comprises power amplifier, definite value driver, intracapsular pressure limit value and protector, decompression and voltage stabilizing aerating device and source of the gas; its operation principle is to use patient's electrocardiosignal behind signal processing; begin to drive blood pump in early days in diastole, mid-diastolic begins to drive air pump.

During use, conduit 1 crimp end is inserted patient's left ventricle through femoral artery and aortic valve, be inhaled into blood pump at paradoxical expansion blood by conduit cavity and aperture 11, diastole is pumped the blood of blood pump in early days by side opening 6, the diastole middle and advanced stage is full with sacculus 2, gas pump is gone into sacculus 2 play the anti-effect of fighting of sacculus, the aorta inner blood fully can be pressed to the tip circulation, increase the perfusion of capillary bed.

This utility model is not limited to above-mentioned embodiment, and conspicuous for those skilled in the art modification or transformation are all thought and dropped within this utility model protection domain.

Claims

1. left ventricle subsidiary conduit device, it is for having the curling shape conduit (1) of one-way valve (4) and sacculus (2), the crimp end of conduit (1) is a proximal part, the other end is distal end (12), it is characterized in that: sacculus (2) is attached to conduit (1) surface, one-way valve (4) is located on conduit (1) pipeline apart from conduit crimp end 5-8cm, on conduit (1), be provided with the side opening (6) of band flap valve (5) away from conduit crimp end one-way valve (4) one sides, the crimp end of conduit (1) is provided with aperture (11), sacculus (2) is connected with air pump by sacculus connection tube (3), and the distal end of conduit (12) is connected with blood pump.

2. left ventricle subsidiary conduit device according to claim 1 is characterized in that: the volume when described sacculus (2) expands is 40ml.