Left heart drainage cannula

Abstract

The utility model discloses a left heart drainage intubation tube, which belongs to the technical field of medical instruments and comprises a drainage intubation tube body comprising a drainage tube straight section, two ends of the drainage tube straight section are provided with a first bending part and a second bending part, and the first bending part and the second bending part are bent in the same direction; a plurality of drainage holes are formed in the circumferential direction of the second bending part; the light source is arranged at the end, away from the straight section of the drainage tube, of the second bent part; the wire is arranged on the inner wall of the drainage cannula body, one end of the wire is electrically connected with the light source, and the other end of the wire extends to the outer side of the drainage cannula body and is electrically connected with a power source. The left ventricle drainage tube solves the problems that the left ventricle drainage tube is difficult to indwelling and easy to displace or fall off in a cardiac operation, the operation field light is insufficient, the pressure in the left ventricle cannot be measured and the like, and operation efficiency and safety are improved.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically referring to a device used for extracorporeal circulation in cardiac surgery, involving a left ventricular drainage cannula. Background Technology

[0002] In most cardiac surgeries (valvular surgery, emergency coronary artery bypass grafting, and cardiomyopathy surgery, etc.), cardiopulmonary bypass is required to stop the heart and facilitate the procedure. Besides cannulation of major blood vessels such as the aorta and superior and inferior vena cava, some surgeries also require the placement of a drainage tube in the left atrium / ventricle via the right superior pulmonary vein. The depth and suction are adjusted according to the surgical needs to continuously drain bleeding and exudate from this area, thus ensuring a clear surgical field. Due to the anatomy of the heart, the placement of a left ventricular drainage tube is significantly more difficult than other drainage cannulations.

[0003] Currently used left ventricular drainage tubes are all straight tubes with a rigid guidewire attached to the lumen to maintain their shape. During insertion, the surgeon needs to adjust the angle beforehand based on experience to place them into the left atrium / ventricle. Due to the winding path of the tube and the inability to directly visualize it, current techniques make it difficult to achieve the ideal angle, making the insertion process very difficult. Furthermore, even after successful insertion, with purse-string sutures for fixation, the left ventricular drainage tube often shifts or even dislodges during hours of cardiac surgery, resulting in an unclear surgical field and requiring frequent adjustments or re-insertion, severely impacting the surgical progress. In addition, the left ventricle is located deep within the heart, resulting in poor visibility. Even with an assistant's retractor for exposure, external light is still difficult to reach the left ventricular surgical field, requiring the surgeon to frequently adjust the surgical light position to ensure a clear surgical field, further complicating the procedure.

[0004] At the same time, the left ventricular drainage tube cannot measure the pressure in the left ventricle, and cannot accurately assess cardiac function in a timely manner before extubation after the heart restarts and before cardiopulmonary bypass. Utility Model Content

[0005] To solve the above problems, the present invention adopts the following technical solution:

[0006] A left ventricular drainage cannula includes:

[0007] The drainage cannula body includes a straight section of the drainage tube, and a first bend and a second bend are provided at both ends of the straight section of the drainage tube. The first bend and the second bend are bent in the same direction. The second bend is provided with a plurality of drainage holes in the circumferential direction.

[0008] A light source is disposed at the end of the second bend that is away from the straight section of the drainage tube;

[0009] A wire is arranged on the inner wall of the drainage catheter body, one end of the wire is electrically connected with the light source, and the other end extends to the outside of the drainage catheter body and is electrically connected with the power supply.

[0010] Further, it also comprises:

[0011] A floating catheter head is arranged at the end of the second bending part away from the drainage tube straight section.

[0012] A connecting line is arranged on the inner wall of the drainage catheter body, one end of the connecting line is in communication with the floating catheter head, and the other end extends to the outside of the drainage catheter body.

[0013] Further, the light source is arranged opposite to the floating catheter head, and the light source is located on the inner side of the second bending part.

[0014] Further, the first included angle between the first bending part and the drainage tube straight section is 120°, and the second included angle between the second bending part and the drainage tube straight section is 135°.

[0015] Further, the drainage hole is elliptical.

[0016] Further, a support guide wire is arranged in the drainage catheter body.

[0017] Beneficial effects:

[0018] 1. The utility model solves the problems of difficult left heart drainage tube intubation, easy displacement or falling out, insufficient light in the operation field and inability to measure left ventricular pressure during heart surgery, improves the use effect of the left heart drainage tube during heart surgery, reduces the operation difficulty, and improves the operation efficiency and safety.

[0019] 2. By setting a specific angle and shape in advance, the difficulty of left ventricular intubation is greatly reduced, the stability of left heart intubation is increased, the operation field is clear, and the heart injury caused by frequent adjustment of the pipeline is avoided.

[0020] 3. By adding a light source module, the utility model can provide light for the left ventricular operation field, and the operator can observe the intracardiac structure more clearly.

[0021] 4. By adding a pressure measuring module, the utility model can measure the left ventricular pressure in time and accurately before extracorporeal circulation extubation, and quickly evaluate the heart function and operation effect of the patient. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The left heart drainage catheter overall structure schematic diagram provided by the utility model is shown in the figure.

[0023] Wherein, 1-wire; 2-extracorporeal circulation pipeline connection part; 3-connection line; 4-first bending part; 5-first included angle; 6-drainage tube straight section; 7-second included angle; 8-second bending part; 9-light source; 10-floating catheter head. DETAILED DESCRIPTION

[0024] Embodiment 1

[0025] Reference Figure 1 A left heart drainage cannula, comprising:

[0026] The drainage cannula body comprises a drainage tube straight section 6, two ends of the drainage tube straight section 6 are provided with a first bending part 4 and a second bending part 8, and the first bending part 4 and the second bending part 8 are bent in the same direction; the second bending part 8 is circumferentially provided with a plurality of drainage holes; wherein the drainage tube straight section 6 is a left atrium part of the drainage tube, different models can be selected according to the size of the heart, the first bending part 4 is an extracardiac part of the drainage tube, and the second bending part 8 is an intracardiac part of the drainage tube;

[0027] The light source 9 is arranged at the end of the second bending part 8 away from the drainage tube straight section 6.

[0028] The wire 1 is arranged on the inner wall of the drainage cannula body, one end of the wire 1 is electrically connected with the light source 9, and the other end extends to the outside of the drainage cannula body and is electrically connected with the power supply.

[0029] Specifically, the end of the first bending part 4 away from the drainage tube straight section 6 is the extracorporeal circulation pipeline connection part 2.

[0030] The embodiment adds a light source module, so that light can be provided for a left ventricular surgical field, and a surgeon can more clearly observe the intracardiac structure.

[0031] The left heart drainage cannula provided in the embodiment further comprises:

[0032] The floating catheter head 10 is arranged at the end of the second bending part 8 away from the drainage tube straight section 6.

[0033] The connection line 3 is arranged on the inner wall of the drainage cannula body, one end of the connection line 3 is in communication with the floating catheter head 10, and the other end extends to the outside of the drainage cannula body.

[0034] In the embodiment, the light source 9 is arranged opposite to the floating catheter head 10, and the light source 9 is located on the inner side of the second bending part 8.

[0035] The embodiment adds a pressure measuring module (the floating catheter head 10), so that the left ventricular pressure can be measured in time and accurately before the extracorporeal circulation is pulled out, and the cardiac function of the patient and the operation effect can be quickly evaluated.

[0036] In the embodiment, the first included angle 5 between the first bending part 4 and the straight section 6 of the drainage tube is 120°, corresponding to the right superior pulmonary vein; and the second included angle 7 between the second bending part 8 and the straight section 6 of the drainage tube is 135°, corresponding to the mitral valve.

[0037] The embodiment sets specific angles and shapes in advance, greatly reduces the difficulty of left ventricular intubation, increases the stability of left heart intubation, ensures a clear surgical field, and avoids cardiac injury caused by frequent adjustment of the pipeline.

[0038] In the embodiment, the drainage hole is an oval shape.

[0039] In the embodiment, a support guide wire is arranged in the drainage intubation body.

[0040] The left heart drainage intubation provided by the embodiment is composed of a drainage intubation body and a support guide wire. Specifically, the left heart drainage intubation can be divided into four parts, from the handheld end to the intracardiac end, in order: the first part is a pipeline connection part, the support guide wire is inserted from this part, and after successful intubation, the drainage intubation body is also connected with the extracorporeal circulation pipeline through this part; the second part is a light source part, including a power supply and a light source switch; the third part is a bending part, which is designed according to the anatomical characteristics of the right superior pulmonary vein and the mitral valve, and by adjusting the distance between the two bends, various sizes of hearts can be matched; the fourth part is the intraventricular part, which mainly includes a plurality of oval holes for drainage, a light source, and a pressure measurement system.

[0041] In the embodiment, the support guide wire is harder than the current guide wire material, and after being inserted into the drainage intubation body, the whole left ventricular drainage tube is in a straight line, which is convenient for intubation.

[0042] The above is only a preferred embodiment of the present application, and does not limit the technical scope of the present application. Therefore, any slight modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belongs to the scope of the technical scheme of the present application.

Claims

1. A left heart drainage cannula, characterized in that, The drainage tube body comprises a drainage tube straight section, two ends of the drainage tube straight section are provided with a first bending part and a second bending part, and the first bending part and the second bending part are bent in the same direction; a plurality of drainage holes are arranged on the second bending part in the circumferential direction; A light source is arranged at the end of the second bending part away from the drainage tube straight section; A wire is arranged on the inner wall of the drainage tube body, one end of the wire is electrically connected with the light source, and the other end extends to the outside of the drainage tube body and is electrically connected with a power supply. Further comprising:

2. The left heart drainage cannula according to claim 1, characterized in that A floating catheter head is arranged at the end of the second bending part away from the drainage tube straight section; A connecting line is arranged on the inner wall of the drainage tube body, one end of the connecting line is in communication with the floating catheter head, and the other end extends to the outside of the drainage tube body. The light source is arranged opposite to the floating catheter head, and the light source is located on the inner side of the second bending part.

3. The left heart drainage cannula of claim 2, wherein, The first included angle between the first bending part and the drainage tube straight section is 120°; and the second included angle between the second bending part and the drainage tube straight section is 135°.

4. The left heart drainage cannula of claim 1, wherein, The drainage hole is an oval shape.

5. The left heart drainage cannula of claim 1, wherein, A support guide wire is arranged in the drainage tube body.

6. The left heart drainage cannula of claim 1, wherein, ​

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