Cardioplegic solution infusion tube

Abstract

The utility model relates to the technical field of cardiac surgery auxiliary instruments, and discloses a cardioplegic solution infusion tube which comprises a connecting tube communicated with a cardioplegic solution conveying device, the other end of the connecting tube is communicated with a bendable connector, the other end of the connector is communicated with an infusion head, and the infusion head comprises a trumpet-shaped supporting portion and a flexible sealing portion. The necking end of the supporting part is connected with the connector, the expanding end of the supporting part is connected with a sealing part used for abutting against and covering a coronary artery opening, and the sealing part is annular and is arranged in the circumferential direction of the expanding end of the supporting part. The perfusion head of the perfusion tube can conduct perfusion operation without being inserted into the coronary artery opening, the perfusion tube is suitable for the situations that coronary artery opening arteriosclerosis is serious and coronary artery opening is complex, the coronary artery opening is not damaged, perfusion operation is easy, convenient and rapid, and safety is high.

Description

Technical Field

[0001] The utility model relates to the technical field of cardiac surgery auxiliary instruments, in particular to a cardioplegia solution perfusion tube. Background Art

[0002] The coronary artery is the artery that supplies blood to the heart. It originates in the aortic sinus at the root of the aorta and is divided into left and right branches that run along the surface of the heart. During specific cardiac surgical operations, it is necessary to directly perfuse cardioplegia solution through the openings of the left and right coronary arteries to stop the heart, even if the heart is in a state of electro-mechanical stillness, in order to ensure the safety and efficiency of the operation while protecting the heart.

[0003] At present, the operation methods of cardiac surgery in clinical practice are divided into: Operation 1, first clamp the distal end of the heart's aorta with a blocking clamp, puncture the position between the blocking point and the heart, and then introduce the cardioplegia solution from the puncture point through the perfusion tube, and the cardioplegia solution flows into the coronary artery to achieve the purpose of cardiac arrest. Operation 2: Since the aortic valve of the heart in some cardiac surgeries has aortic valve insufficiency, it is necessary to cut the aorta, and insert the perfusion head of the perfusion tube into the coronary artery opening under direct vision to perfuse the cardioplegia solution. The operation of Operation 2 has the following problems: 1. There is a risk of causing damage to the coronary artery opening; 2. When the coronary artery opening is small or the patient has coronary artery sclerosis, it is not easy to insert for perfusion, and the perfusion head cannot adapt to the diameter of different blood vessels, which sometimes causes heart damage or cardioplegia leakage; 3. When the coronary artery originates from a branch coronary artery, it is easy to cause selective perfusion, resulting in incomplete perfusion, affecting the perfusion and myocardial protection effect. The safety, convenience and effectiveness of the existing coronary artery cardioplegia solution perfusion operation have the above shortcomings. Utility Model Content

[0004] The utility model provides a cardioplegia solution perfusion tube, the perfusion head of which can perform perfusion operation without being inserted into the coronary artery opening, and is suitable for the situation where the coronary artery opening has severe arteriosclerosis and a complex coronary artery opening, without damaging the coronary artery opening, and the perfusion operation is simple, fast and highly safe.

[0005] The above-mentioned purpose of the utility model is achieved through the following technical solutions:

[0006] A cardioplegia solution perfusion tube comprises a connecting tube connected to a cardioplegia solution delivery device, the other end of the connecting tube is connected to a flexible joint, the other end of the joint is connected to a perfusion head, the perfusion head comprises a trumpet-shaped support portion and a flexible sealing portion, the necked end of the support portion is connected to the joint, the enlarged end of the support portion is connected to a sealing portion for pressing against and covering a coronary artery opening, the sealing portion is annular and is circumferentially arranged along the enlarged end of the support portion.

[0007] The above-mentioned cardiac arrest solution perfusion tube, wherein the sealing portion includes a clamping portion and a fitting portion located below the clamping portion, the clamping portion includes a receiving groove and a clamping ring, the receiving groove is located at the top of the sealing portion, the receiving groove is an annular groove opening upward and is adapted to the expanded diameter end of the support portion, the clamping ring is arranged at the top of the two side walls of the receiving groove and extends respectively to the inner cavity of the receiving groove, the inner and outer sides of the expanded diameter end of the support portion are respectively provided with clamping grooves adapted to the corresponding clamping rings, and the clamping grooves are arranged along the circumference of the support portion; the fitting portion includes an inner fitting ring and an outer fitting ring, and an upwardly recessed isolation ring groove is provided between the inner fitting ring and the outer fitting ring.

[0008] In the above-mentioned cardioplegia solution perfusion tube, the bottom surface of the outer fitting ring is lower than the bottom surface of the inner fitting ring.

[0009] In the above-mentioned cardioplegia solution perfusion tube, the clamping portion and the fitting portion are integrally formed.

[0010] The above-mentioned cardioplegia solution perfusion tube, wherein the outer fitting ring is arranged to be inclined toward the outside.

[0011] In the above-mentioned cardioplegia solution perfusion tube, the bottom surfaces of the inner fitting ring and the outer fitting ring are in the form of arc transition.

[0012] In the above-mentioned cardioplegia solution perfusion tube, the sealing portion is made of medical silicone rubber.

[0013] The above-mentioned cardioplegia solution perfusion tube, wherein the connector is a metal shaped hose.

[0014] In the above-mentioned cardioplegia solution perfusion tube, the two ends of the joint are respectively threadedly connected to the connecting tube and the supporting part.

[0015] In the above-mentioned cardioplegia solution perfusion tube, the connecting tube and the supporting part are both made of medical PET material.

[0016] In summary, the beneficial technical effects of the utility model are:

[0017] The utility model is provided with a connecting tube connected to a cardioplegia fluid delivery device, the other end of the connecting tube is connected to a bendable joint, the other end of the joint is connected to a perfusion head, the perfusion head comprises a trumpet-shaped support part and a flexible sealing part, the necked end of the support part is connected to the joint, the enlarged end of the support part is connected to a sealing part for pressing against and covering the coronary artery opening, the sealing part is annular and circumferentially arranged along the enlarged end of the support part. When the perfusion tube is used, the perfusion head does not need to be inserted into the coronary artery opening, the sealing part covers and presses against the aorta wall around the coronary artery opening, which can avoid damage to the coronary artery opening, ensure the completeness of the perfusion, and avoid leakage of the cardioplegia fluid.

[0018] The connecting tube of the perfusion tube can be bent and can maintain its specific angle. The angle can be adjusted according to the position of the opening of the patient's coronary artery to ensure the smooth progress of the perfusion work. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 yes Figure 1 Axial cross-sectional view of

[0021] Figure 3 yes Figure 2 Enlarged view of part A.

[0022] As shown in the figure, 1. connecting pipe; 2. joint; 3. injection head; 31. supporting part; 311. clamping groove; 32. sealing part; 321. clamping part; 3211. accommodating groove; 3212. clamping ring; 322. fitting part; 3221. inner fitting ring; 3222. outer fitting ring; 3223. isolation ring groove. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-3 The utility model is described in further detail.

[0024] like Figure 1 , 2 As shown, a cardioplegia solution perfusion tube comprises a connecting tube 1 connected to a cardioplegia solution delivery device, the other end of the connecting tube 1 is connected to a flexible joint 2, the other end of the joint 2 is connected to a perfusion head 3, the perfusion head 3 comprises a trumpet-shaped support portion 31 and a flexible sealing portion 32, the sealing portion 32 can be made of medical silicone rubber material, the silicone rubber material is elastic, and can reduce trauma to the heart when pressed against the aortic wall; the necked end of the support portion 31 is connected to the joint 2, the enlarged end of the support portion 31 is connected to the sealing portion 32 for pressing against and covering the opening of the coronary artery, the sealing portion 32 is annular and circumferentially arranged along the enlarged end of the support portion 31.

[0025] The cardioplegia solution delivery device is connected to the connecting tube 1, the connector 2 and the perfusion head 3 in sequence through a hose, the sealing portion 32 on the perfusion head 3 covers the coronary artery opening and is pressed against the aortic wall of the coronary artery opening, the cardioplegia solution delivery device is started, and the cardioplegia solution output from the cardioplegia solution delivery device can enter the coronary artery from the perfusion head 3 through the coronary artery opening, thereby realizing the perfusion operation of the cardiac cardioplegia solution.

[0026] like Figure 2 , 3As shown, the sealing portion 32 includes a clamping portion 321 and a fitting portion 322 located below the clamping portion 321, the clamping portion 321 and the fitting portion 322 are integrally formed, the clamping portion 321 includes a receiving groove 3211 and a snap ring 3212, the receiving groove 3211 is located at the top of the sealing portion 32, the receiving groove 3211 is an annular groove opening upward and is adapted to the expanded diameter end of the support portion 31, the snap ring 3212 is arranged at the top of the two side walls of the receiving groove 3211 and extends respectively to the inner cavity of the receiving groove 3211, the inner and outer sides of the expanded diameter end of the support portion 31 are respectively provided with clamping grooves 311 adapted to the corresponding snap rings 3212, and the clamping grooves 311 are arranged along the circumference of the support portion 31; the fitting portion 322 includes an inner fitting ring 3221 and an outer fitting ring 3222, and an upwardly recessed isolation ring groove 3223 is provided between the inner fitting ring 3221 and the outer fitting ring 3222.

[0027] In order to ensure that the fitting part 322 can fit more closely with the aortic wall at the opening of the coronary artery and prevent the leakage of the cardioplegia solution, the bottom surface of the outer fitting ring 3222 is slightly lower than the bottom surface of the inner fitting ring 3221. When the fitting part 322 is pressed against the opening of the coronary artery, the inner fitting ring 3221 and the outer fitting ring 3222 are respectively pressed against the aortic wall at the opening of the coronary artery, thereby achieving a double seal at the opening of the coronary artery and reducing the leakage of the cardioplegia solution during the perfusion operation; the setting of the isolation ring groove 3223 makes it easier for the inner fitting ring 3221 and the outer fitting ring 3222 to deform under the action of external force, thereby improving the sealing performance of the inner fitting ring 3221 and the outer fitting ring 3222 against the aortic wall.

[0028] In order to prevent the fitting portion 322 from damaging the aorta wall at the coronary artery opening, the bottom surfaces of the inner fitting ring 3221 and the outer fitting ring 3222 are in a circular arc transition.

[0029] In one embodiment, the outer fitting ring 3222 is tilted outwards, which makes it easier for the outer fitting ring 3222 to fit the aorta wall of the coronary artery opening.

[0030] The connector 2 of this embodiment is a metal shaped hose. The connector 2 can be bent into a specific angle and maintain the specific state, so that the angle between the connecting pipe 1 and the injection head 3 is an adjustable structure, and the angle is within the range of 90°-145°. Figure 1 , 2 The schematic diagram of the structure of the connector with an overall angle of 90° is shown. The bending angle of the connector 2 is adjusted according to the specific situation of the opening position of the patient's coronary artery, thereby reducing the difficulty of the perfusion operation and ensuring that the cardioplegia solution can be accurately perfused into the coronary artery.

[0031] In one embodiment, two ends of the joint 2 are respectively provided with internal threads and external threads, and the two ends of the joint 2 are respectively threadedly connected with the connecting pipe 1 and the supporting portion 31 .

[0032] The connecting tube 1 and the supporting part 31 of this embodiment are both made of medical PET material.

[0033] The specific working process of the utility model is as follows: according to the physical condition of the patient (such as an adult or a child), different sizes of perfusion heads 3 can be selected. The sealing part 32 is buckled on the supporting part 31 through the clamping part 321, and then the supporting part 31 is threadedly connected to the joint 2, and the other end of the joint 2 is threadedly connected to the connecting tube 1, and the connecting tube 1 is connected to the cardioplegia solution delivery device. According to the angle position of the patient's coronary artery opening, the bending angle of the joint 2 is adjusted, and the connecting tube 1 is held, and the fitting part 322 is covered on the coronary artery opening and pressed against the aortic wall of the coronary artery opening, and the cardioplegia solution delivery device is started, and the cardioplegia solution is perfused into the coronary artery through the perfusion tube.

[0034] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A cardioplegia solution perfusion tube, comprising a connecting tube connected to a cardioplegia solution delivery device, characterized in that: The other end of the connecting tube is connected to a bendable joint, and the other end of the joint is connected to an injection head. The injection head includes a trumpet-shaped support portion and a flexible sealing portion. The necked end of the support portion is connected to the joint, and the expanded end of the support portion is connected to a sealing portion for pressing against and covering the opening of the coronary artery. The sealing portion is annular and is circumferentially arranged along the expanded end of the support portion.

2. The cardioplegia solution perfusion tube according to claim 1, characterized in that: The sealing portion includes a clamping portion and a fitting portion located below the clamping portion, the clamping portion includes a receiving groove and a snap ring, the receiving groove is located at the top of the sealing portion, the receiving groove is an annular groove opening upward and is adapted to the expanded diameter end of the support portion, the snap ring is arranged at the top of the two side walls of the receiving groove and extends respectively to the inner cavity of the receiving groove, the inner and outer sides of the expanded diameter end of the support portion are respectively provided with clamping grooves adapted to the corresponding snap rings, and the clamping grooves are arranged along the circumference of the support portion; the fitting portion includes an inner fitting ring and an outer fitting ring, and an upwardly recessed isolation ring groove is provided between the inner fitting ring and the outer fitting ring.

3. The cardioplegia solution perfusion tube according to claim 2, characterized in that: The bottom surface of the outer fitting ring is lower than the bottom surface of the inner fitting ring.

4. The cardioplegia solution perfusion tube according to claim 2, characterized in that: The clamping portion and the fitting portion are integrally formed.

5. The cardioplegia solution perfusion tube according to claim 2 or 3, characterized in that: The outer fitting ring is arranged to be inclined outward.

6. The cardioplegia solution perfusion tube according to claim 2 or 3, characterized in that: The bottom surfaces of the inner fitting ring and the outer fitting ring are in arc transition.

7. The cardioplegia solution perfusion tube according to claim 1 or 2, characterized in that: The sealing part is made of medical silicone rubber.

8. The cardioplegia solution perfusion tube according to claim 1, characterized in that: The joint is a metal shaped hose.

9. The cardioplegia solution perfusion tube according to claim 1 or 8, characterized in that: The two ends of the joint are respectively threadedly connected with the connecting pipe and the supporting part.

10. The cardioplegia solution perfusion tube according to claim 1, characterized in that: The connecting tube and the supporting part are both made of medical PET material.

Images