Aorta remaining needle

Abstract

An aorta remaining needle comprises a puncture needle and a sleeve, a flow channel is arranged in the sleeve in the axial direction, the front end of the puncture needle penetrates through the flow channel and extends to the front portion of the sleeve, a first connector is arranged at the rear end of the sleeve, a bulging ball is arranged at the front end of the sleeve, and the bulging ball is distributed on the periphery of the sleeve in the circumferential direction of the sleeve. A side pipe is connected to the side face of the sleeve, a second connector is arranged at the rear end of the side pipe, a side connector is arranged on the side wall of the second connector, a first water stop clamp is arranged on the side pipe, and a second water stop clamp is arranged on the portion, between the bulging ball and the first connector, of the sleeve. In a non-stop bypass surgery, the indwelling needle is used for puncturing, the contact area between the indwelling needle and the aorta wall can be increased through the bulged ball, and therefore the stability and reliability of fixing of the indwelling needle are improved, the side connector is connected with the silica gel hose, blood can be rapidly supplied to far-end ischemic myocardium, and the operation is convenient. And the possibility of occurrence of myocardial avascular necrosis and malignant arrhythmia is reduced. The indwelling needle can also be connected with the free great saphenous vein, hormone or nitroglycerin is injected to the ischemic myocardium after the far-end anastomotic stoma is completed, great saphenous vein bridge can be conveniently cut under the condition of hyperemia expansion, and therefore the optimal length is designed for the bridge blood vessel.

Description

Technical Field

[0001] The invention relates to human daily necessities, in particular to medical equipment, and in particular to an aortic indwelling needle. Background Art

[0002] In off-pump coronary artery bypass grafting, the coronary artery needs to be cut. At this time, myocardial ischemia occurs in the distal end of the cut coronary artery, which can lead to myocardial infarction, repeated ventricular fibrillation, and extracorporeal circulation support. There is a lack of measures to ensure distal myocardial blood flow. Although skilled surgeons can quickly insert silicone shunt embolization into the coronary artery to restore distal coronary blood supply, due to severe stenosis of the proximal coronary artery and twisted and narrowed coronary artery caused by cardiac displacement, it is still difficult to insert the shunt embolization. Even if it is inserted, the flow may not meet the needs of distal myocardial blood supply, which is prone to myocardial infarction and malignant arrhythmia. At present, there is no effective measure to restore coronary blood flow in time, avoid malignant arrhythmia or even extracorporeal circulation. In addition, intraoperative coronary injection is a common operation in cardiac surgery. For post-infarction myocardium or spasmodic coronary artery, hormones and nitroglycerin are often injected into specific coronary arteries after the distal anastomosis is completed. The current operation method uses a 1ml syringe to puncture and inject directly on the vein bridge. It is easy to damage the vein and cause vein bridge dissection. In addition, the existing aortic root perfusion needle lacks a side connector, so the needle plug of the needle cannot be connected. After completing the distal anastomosis of the great saphenous vein, the coronary artery cannot be supplied with blood through the needle at the proximal end of the great saphenous vein immediately. Summary of the invention

[0003] The purpose of the present invention is to provide an aortic indwelling needle, which is intended to solve the technical problems in the prior art of lacking measures to ensure distal myocardial blood flow and lacking drug treatment for specific coronary blood supply areas.

[0004] An aortic indwelling needle of the present invention comprises a puncture needle and a sleeve, wherein a flow channel is axially arranged in the sleeve, the front end of the puncture needle passes through the flow channel and extends to the front of the sleeve, the rear end of the sleeve is provided with a first joint, the front end of the sleeve is provided with a bulging ball, the bulging balls are distributed on the outer circumference of the sleeve around the circumferential direction of the sleeve, a side tube is connected to the side of the sleeve, the inner cavity of the side tube is communicated with the flow channel of the sleeve, a second joint is arranged at the rear end of the side tube, a side joint is arranged on the side wall of the second joint, the inner cavity of the side joint is communicated with the inner cavity of the second joint, both the first joint and the second joint are provided with external threads, a first water stop clamp is arranged on the side tube, and a second water stop clamp is arranged on the sleeve between the bulging ball and the first joint.

[0005] Furthermore, the rear end of the puncture needle is provided with an internal thread.

[0006] Furthermore, the sleeve and the side tube are both made of soft materials.

[0007] Compared with the prior art, the present invention has a positive and obvious effect. In off-pump bypass surgery, the indwelling needle of the present invention is used for puncture, and the bulging ball can increase the contact area between the indwelling needle and the aortic wall, thereby improving the stability and reliability of the fixation of the indwelling needle. The silicone hose is connected through the side joint to quickly supply blood to the distal ischemic myocardium, reducing the possibility of myocardial ischemic necrosis and malignant arrhythmia. The indwelling needle can also be connected to the free great saphenous vein, and hormones or nitroglycerin can be injected into the ischemic myocardium after the distal anastomosis is completed. It is also convenient to cut the great saphenous vein bridge in the case of congestion and expansion, so as to design the optimal length for the bridge vessel. In addition, in other heart surgeries, the first connector of the indwelling needle can be externally connected to a negative pressure drainage tube to complete the heart cavity exhaust function after heart surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The figure is a schematic diagram of an aortic indwelling needle of the present invention.

[0009] Figure 2 The figure is a cross-sectional schematic diagram of an aortic indwelling needle of the present invention.

[0010] Figure 3 The figure is a schematic diagram of a puncture needle in an aortic indwelling needle of the present invention. DETAILED DESCRIPTION

[0011] The present invention is further described below in conjunction with an embodiment, but the present invention is not limited to the embodiment, and any similar structure and similar changes of the present invention should be included in the protection scope of the present invention. The use of directions such as up, down, front, back, left, and right in the present invention is only for the convenience of clear description, and is not a limitation of the technical solution of the present invention.

[0012] like Figure 1-Figure 3 As shown, an aortic indwelling needle of the present invention comprises a puncture needle 1 and a sleeve 2, a flow channel is axially arranged in the sleeve 2, the front end of the puncture needle 1 passes through the flow channel and extends to the front of the sleeve 2, a first joint 6 is arranged at the rear end of the sleeve 2, a bulging ball 3 is arranged at the front end of the sleeve 2, the bulging balls 3 are distributed on the outer periphery of the sleeve 2 in the circumferential direction of the sleeve 2, a side tube 9 is connected to the side of the sleeve 2, the inner cavity of the side tube 9 is communicated with the flow channel of the sleeve 2, a second joint 5 is arranged at the rear end of the side tube 9, a side joint 4 is arranged on the side wall of the second joint 5, the inner cavity of the side joint 4 is communicated with the inner cavity of the second joint 5, the first joint 6 and the second joint 5 are both provided with external threads, a first water stop clamp 7 is arranged on the side tube 9, and a second water stop clamp 8 is arranged on the sleeve 2 between the bulging ball 3 and the first joint 6.

[0013] Furthermore, the rear end of the puncture needle 1 is provided with an internal thread.

[0014] Furthermore, the sleeve 2 and the side pipe 9 are both made of soft materials and can be deformed and closed under the pressure of the water stop clamp.

[0015] Specifically, the first joint 6, the second joint 5, the side joint 4, etc. in this embodiment all adopt well-known solutions in the prior art, which are well understood by those skilled in the art and will not be described in detail here.

[0016] The working principle of this embodiment:

[0017] Example 1

[0018] like Figure 1 and Figure 2 As shown, the puncture needle 1 is inserted into the cannula 2 and punctured until the bulging ball 3 enters the aorta, the puncture needle 1 in the cannula 2 is pulled out, the second water stop clamp 8 is closed, and the purse string pre-set around the aortic puncture point is tightened. At this time, the indwelling needle is fixed on the aortic wall, and the bulging ball 3 can increase the contact area between the indwelling needle and the aortic wall, thereby improving the stability and reliability of fixation. The indwelling needle is connected to the silicone hose through the side connector 4, and the second connector 5 is sealed with a heparin cap, and the silicone hose can quickly supply blood to the distal ischemic myocardium.

[0019] The technical effect achieved by this embodiment is: for patients with difficulty in placing silicone shunt plugs or severe myocardial ischemia, the distal coronary blood flow is effectively guaranteed, the possibility of myocardial ischemia and necrosis and malignant arrhythmia is reduced, and time is gained and safety is provided for off-pump coronary artery bypass surgery.

[0020] Example 2

[0021] like Figure 1 and Figure 2 As shown, the indwelling needle is punctured until the bulging ball 3 enters the aorta, the puncture needle 1 in the cannula 2 is pulled out, the first water stop clamp 7 and the second water stop clamp 8 are closed, and the purse string pre-set around the puncture point is tightened. At this time, the indwelling needle is fixed on the aortic wall, and the bulging ball 3 can increase the contact area between the indwelling needle and the aortic wall, thereby improving the stability and reliability of fixation. After the great saphenous vein is anastomosed with the coronary artery, the proximal end of the great saphenous vein can be connected to the side connector 4 to supply blood to the distal ischemic myocardium, and the second connector 5 is externally connected to a syringe to inject hormones or nitroglycerin and other drugs into the myocardium in the ischemic area.

[0022] Example 3

[0023] like Figure 1 and Figure 2As shown, the indwelling needle is punctured until the bulging ball 3 enters the aorta, the puncture needle 1 in the cannula 2 is pulled out, the second water stop clamp 8 is closed, the second connector 5 is sealed with a heparin cap, and the purse string pre-set around the puncture point is tightened. At this time, the indwelling needle is reliably fixed on the aortic wall, and the bulging ball 3 can increase the contact area between the indwelling needle and the aortic wall, thereby improving the stability and reliability of fixation. The side connector 4 connects the free great saphenous vein to make the great saphenous vein congested and expanded, reaching a state similar to that after anastomosis of the ascending aorta.

[0024] The technical effect achieved by this embodiment is: after the great saphenous vein is swollen with blood, the length of the great saphenous vein can be accurately assessed and precisely cut to design the best route and length for the great saphenous vein bridge.

[0025] Example 4

[0026] like Figure 1 and Figure 2 As shown, the indwelling needle punctures until the bulging ball 3 enters the aorta, the puncture needle 1 in the cannula 2 is pulled out, the first water stop clamp 7 is closed, and the purse string pre-set around the puncture point is tightened. At this time, the indwelling needle is reliably fixed on the aortic wall. The first connector 6 completes the heart cavity exhaust function after cardiac surgery by connecting the negative pressure drainage tube.

[0027] The technical effect achieved by this embodiment is that after the extracorporeal circulation-assisted heart surgery is completed, the air can be exhausted through the indwelling needle, the operation is simple and fast, the damage is small, and the safety of the surgery is effectively improved.

[0028] The first connector 6 and the second connector 5 can be connected to a heparin cap with an internal thread through an external thread. By clamping and opening the first water stop clamp 7 and the second water stop clamp 8, the closing and opening of the side tube 9, the sleeve 2, and the internal blood flow can be controlled respectively.

[0029] In summary, in the on-pump bypass surgery, the indwelling needle of the present invention is used for puncture, and the bulging ball 3 can increase the contact area between the indwelling needle and the aortic wall, thereby improving the stability and reliability of the fixation of the indwelling needle. The silicone hose is connected through the side connector 4, which can quickly supply blood to the distal ischemic myocardium, reducing the possibility of myocardial ischemic necrosis and malignant arrhythmia. The indwelling needle can also be connected to the free great saphenous vein, and hormones or nitroglycerin can be injected into the ischemic myocardium after the distal anastomosis is completed. It is also convenient to cut the great saphenous vein bridge in the case of congestion and expansion, so as to design the optimal length for the bridge vessel. In addition, in other heart surgeries, the first connector 6 of the indwelling needle can be externally connected to a negative pressure drainage tube to complete the heart cavity exhaust function after heart surgery.

Claims

1. An aortic indwelling needle, characterized in that: The invention comprises a puncture needle and a sleeve, wherein a flow channel is axially arranged in the sleeve, the front end of the puncture needle passes through the flow channel and extends to the front of the sleeve, the rear end of the sleeve is provided with a first joint, the front end of the sleeve is provided with a bulging ball, the bulging balls are distributed on the outer circumference of the sleeve around the circumferential direction of the sleeve, a side tube is connected to the side of the sleeve, the inner cavity of the side tube is communicated with the flow channel of the sleeve, a second joint is arranged at the rear end of the side tube, a side joint is arranged on the side wall of the second joint, the inner cavity of the side joint is communicated with the inner cavity of the second joint, both the first joint and the second joint are provided with external threads, a first water stop clamp is arranged on the side tube, and a second water stop clamp is arranged on the sleeve between the bulging ball and the first joint.

2. An aortic indwelling needle according to claim 1, characterized in that: The rear end of the puncture needle is provided with an internal thread.

3. The aortic indwelling needle according to claim 1, characterized in that: The sleeve and the side tube are both made of soft materials.

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