WO2008000110A1

WO2008000110A1 - Disposable pulse pipe

Info

Publication number: WO2008000110A1
Application number: PCT/CN2006/003076
Authority: WO
Inventors: Sayed Nour
Original assignee: Wu, Guifu
Priority date: 2006-06-20
Filing date: 2006-11-15
Publication date: 2008-01-03
Also published as: CN200966797Y

Abstract

A disposable pulse pipe (3) for generating pulsatile flow in the patient comprises a tube (31), a heart-lung bypass machine end (34) which is on one end of the tube (31) and is connected to a heart-lung bypass machine (50), a patient end (32) which is on other end of the tube (31) and is inserted into the body of a patient, and a double-lumen part (36) which is provided between the two ends. The double-lumen part (36) includes an integrated intra-aortic balloon membrane.

Description

Disposable pulse tube

The present invention relates to a medical device, and more particularly to a disposable pulse tube for use in a cardiopulmonary bypass machine and an intra-arterial sputum pump for obtaining a stable pulse flow in a patient during cardiopulmonary surgery. Background technique

When performing surgery on patients, especially when doing cardio-related surgery, in order to ensure the normal circulation of the heart, medical aids such as cardiopulmonary bypass are usually used.

(cardiopulmonary bypass machine, CPB) or intraaortic balloon pump (IABP) to maintain a normal circulation outside the patient's body.

With the cardiopulmonary bypass machine described above, blood in the patient's body is temporarily transferred for oxidation and circulation in the body, thereby maintaining the above cycle until the heart and lung organs are restored to normal functions. The above-mentioned intra-arterial sputum pump is used to increase myocardial oxygen supply and reduce myocardial oxygen demand, and is used for boosting cardiac output.

In order to obtain pulse flow in the patient, the above-mentioned cardiopulmonary bypass machine and intra-arterial sputum pump can be combined using a pulstile tube. However, conventional pulse tubes have the risk of causing contamination to the patient and the risk of gas leakage during operation. In addition, conventional pulse tubes are unable to obtain a homogenous pulse flow that is consistent with the physiological pulse flow of the human body.

Therefore, it is necessary to provide a disposable pulse tube that solves the above problems.

1

Confirmation Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a disposable pulse tube that reduces contamination and leakage while making patient surgery safer.

Another object of the present invention is to provide a disposable pulse tube through which a more homogenous pulse flow can be obtained.

To achieve the above object, a disposable pulse tube for obtaining a pulse flow includes: a tube body; a cardiopulmonary bypass machine end formed at one end of the tube body and connected to a cardiopulmonary bypass machine; formed in the tube The other end of the body is for embedding a patient end in the patient's body; and a double lumen formed between the end of the cardiopulmonary bypass machine and the end of the patient. The dual lumen portion has an integrally formed intra-arterial gas diaphragm. - In one embodiment, the integrally formed intra-arterial sacral diaphragm is an internal cavity that directly applies pressure to the blood flow of the patient. In another embodiment, the integrally formed intra-arterial gas diaphragm is an outer chamber. The outer cavity exerts pressure on the blood flow of the patient by compressing the pulse tube from the outside.

Most preferably, the double lumen portion has a length of 45 cm. The pulse tube can be 1.2-1.6 meters long and has a diameter of ll-13 mm. The integrally formed intra-arterial gas diaphragm has a volume of 40 cm ³ and a pulse rate of 10-110 machine pulses per minute. In addition, the distance between the patient end and the double lumen portion is 5-10 cm. The integrally formed intra-arterial sacral diaphragm may be mounted to the pulse tube by means of a spiral form, a face-to-face form or a coil form.

The present invention will be described in detail below by way of preferred embodiments with reference to the accompanying drawings.

DRAWINGS 1 is a perspective view of a pulse tube according to an embodiment of the present invention.

2 is a perspective view of a pulse tube according to another embodiment of the present invention.

Fig. 3 is an exploded perspective view showing the pulse tube and the intra-arterial gas tunnel according to an embodiment of the present invention.

Figure 4 is a perspective view of the pulse tube and the intra-arterial gas tunnel shown in Figure 3. Detailed ways

Embodiments of the invention are now described. Referring to FIG. 1, according to an embodiment of the present invention, a disposable pulsatile tube 3 includes a tube body 31; is formed at one end of the tube body 31 and is used with a cardiopulmonary bypass machine (CPB machine, cardiopulmonary) Bypass machine, refer to FIG. 4) a 50-connected cardiopulmonary bypass machine end (CPB end) 34; a patient end 32 formed at the other end of the tube body 31 and for embedding in a patient's body; A double lumen portion 36 between the cardiopulmonary bypass end 34 and the patient end 32.

The double lumen portion 36 can be coupled to an external contra pulsation pump (refer to FIG. 4) 60 by means of a passage 38 disposed in the tubular body 31. The external counterpulsor pump 60 regularly provides a suitable gas such as helium or carbon dioxide to cause the dual lumen portion 36 to be inflated or deflated to form a pulse flow that regularly drives the patient's blood. In this case, to allow the dual lumen portion 36 to be more inflated or deflated, the dual lumen portion 36 preferably includes an integrally formed intraaortic balloon membrane. Moreover, the integrally formed intrauterine balloon diaphragm is preferably an intraluminal that directly applies pressure to the patient's blood flow. In addition, The double lumen portion 36 may have a length of '45 cm. The pulse tube 3 can be 1.2-1.6 meters long and has a diameter of ll-13 mm. The integrally formed intra-arterial gas diaphragm may have a volume of 40 cm 3 and a pulse frequency of 10-110 machine pulses per minute (machine pulse/min)

3 is a perspective view of a three-dimensional angular separation of a pulse tube and an intraaortic balloon catheter (IAB catheter) according to an embodiment of the present invention. 4 is a perspective view of the pulse tube of FIG. 3 assembled with the intra-arterial gas tunnel. As shown, the patient end 32 of the pulse tube 3 is mounted on a linear connector 5, which in turn is connected to a catheter 8. The conduit 8 is in turn connected to another linear connector 6. The linear connector 6 can be suitably placed within the body of the patient to connect the patient end 32 to the patient's body. The cardiopulmonary bypass end 34 cooperates with a Y-connector 4. The Y-shaped connector 4 includes a CBP portion 42' and an intra aortic balloon pump portion (IABP portion) 44. The cardiopulmonary bypass unit 42 is connected to a pediatric cardiopulmonary bypass tube 2, which in turn is connected to a linear connector 9. The linear connector 9 can be coupled to a cardiopulmonary bypass machine 50 such that the cardiopulmonary bypass machine 50 can provide an appropriate 'pulse to the patient's body through the cardiopulmonary bypass end 34 of the pulse tube 3. The intra-arterial pump portion 44 of the Y-shaped connector 4 is mounted on a connector 7, which can be coupled to a pulmonary pump 60 such that the intra-arterial pump 60 and the pulse tube 3 The dual lumens (not shown) are connected and form an appropriate pulse within the patient's body. Referring to Figure 4, an intra aortic balloon catheter (IAB catheter)! is inserted into the connector bore. The intra-arterial gas tunnel 1 One end can be connected to an external intra-arterial pump.

When in operation, the cardiopulmonary bypass machine and the intra-arterial sputum pump provide a suitable pulse to the patient through the pulse tube 3. The pulse tube of the present invention provides a safer and more homogenous pulse flow. Further, the pulse tube may be mounted on any machine pulsation wind, such as external pumps or intraarterial Nang enhanced counterpulsation apparatus (enhanced external contra pulsation, EECP) 0 pulse tube of the present invention has a wider matching, such as its It can be matched with a cardiopulmonary bypass machine, a heart assist device or an artificial heart to create a downward pulsating homogenous perfusion flow. '

Optimally, the distance between the patient end 32 and the dual lumen portion 36 is sufficiently small to reduce the dead zone between the pulse flow and the patient. In one embodiment, the distance between the patient end 32 and the dual lumen portion 36 is 5-10 cm. '

The integrally formed intra-arterial diaphragm can be mounted to the pulse tube by means of a spiral, face to face or coil form. Moreover, the length of the pulse tube can be adjusted as needed. In this case, the channel 38 of the pulse tube must be extractable from the body 31 and be kept at a sufficient distance from the end of the cardiopulmonary bypass, such as 20 cm, in order to re-regulate the length of the pulse tube. Does not cause harm to the patient.

To reduce contamination and gas leakage, the pulse tube is preferably formed from a suitable material such as polyvinyl chloride (PVC) or silicone. Moreover, the integrally formed intra-arterial diaphragm of the double lumen fistula is made of cardiothane, which reduces red blood cell lysis in the patient. In addition, the size of the pulse tube of the present invention may vary depending on the patient. Compared with the prior art, the utility model has a simple structure, which reduces or avoids the side effects of conventional devices such as the existing pulse cardiopulmonary bypass machine. The pulse cardiopulmonary bypass machine has a high operating cost and requires the use of techniques associated with two standard materials that must be used in existing cardiac devices, such as intra-arterial sputum pumps or conventional cardiopulmonary bypass machines. Moreover, since the pulse tube produces a perfusion flow close to physiological pulse pressure, conflicts with pulse pressure/organ perfusion produced by different pulse devices are completely avoided.

Referring to Fig. 2, according to another embodiment of the present invention, the pulse tube 3 may have a double lumen portion 36 formed of an integrally formed intra-arterial gas diaphragm. The permanent tube 3 of the month is similar to the above-described pulse tube 3, except that in this embodiment, the integrally formed intra-arterial gas diaphragm of the double lumen portion 36 is an extra luminal. The outer cavity exerts pressure on the blood flow of the patient by compressing the pulse tube from the outside. The operation of the pulse tube 3 is similar to that of the pulse tube 3, and further description is omitted here.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto. Therefore, the equivalent changes made by the scope of the present invention remain within the scope of the present invention. .

Claims

Rights request

A disposable pulse tube for generating a pulse flow in a patient, comprising: a tubular body;

a cardiopulmonary bypass machine end formed at one end of the tubular body and for connection to a cardiopulmonary bypass machine;

a patient end portion formed at the other end of the tubular body for embedding in a patient; and a double inner moon portion formed between the end of the cardiopulmonary bypass machine and the end of the patient; wherein

The dual lumen portion has an integrally formed intra-arterial gas diaphragm.

The disposable pulse tube according to claim 1, wherein the integrally formed intra-arterial sacral diaphragm is an internal cavity that directly applies pressure to a blood flow of a patient.

The disposable pulse tube according to claim 1, wherein: the integrally formed intra-arterial sacral diaphragm is an external cavity that exerts pressure on a blood flow of a patient by compressing the pulse tube from the outside. body.

The disposable pulse tube according to claim 1, wherein the double lumen portion has a length of 45 cm.

^5. The disposable pulse tube of claim 1 wherein: said pulse The tube is 1.2-1.6 meters long and its diameter is ll-13mm

The disposable pulse tube according to claim 1, wherein: the integrally formed intra-arterial gas diaphragm has a volume of 40 cm ³ and a pulse frequency of 10 to 110 machine pulses per minute.

The disposable pulse tube according to claim 1, wherein: the integrally formed intra-arterial sacral diaphragm is mounted to the pulse tube by means of a spiral form, a face-to-face form or a coil form.

The disposable pulse tube according to claim 1, wherein a distance between the end portion of the patient and the double lumen portion is 5 - 10 cm.