Cardiac arrest infusion needle
By designing a cardiac fluid perfusion needle including indwelling tube, pressure measuring branch tube and transparent capillary, the problem of high perfusion cost in the prior art center has been solved, the function of monitoring perfusion pressure is realized, and the cost is reduced.
Patent Information
- Application Number
- CN202420599654.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-03-26
AI Technical Summary
The existing cardiac stomp fluid perfusion needle requires additional connection of pressure monitoring devices. The existing pressure monitoring devices are complex in structure and costly, resulting in higher cardiac perfusion costs.
A cardiac fluid perfusion needle is designed, including an indwelling tube, a pressure measuring branch tube and a transparent capillary tube. The pipe wall of the transparent capillary tube is equipped with a pressure scale. The perfusion pressure is monitored by pressing blood in the pressure measuring branch tube into the transparent capillary tube and observing the liquid level height.
It realizes the monitoring of perfusion pressure in the cardiac fluid perfusion needle at the same time. The transparent capillary structure is simple, the manufacturing cost is low, and there is no need for additional connection of the pressure monitoring device, which reduces the cost of cardiac perfusion.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to a cardioplegia solution perfusion needle. Background Art
[0002] With the increase in the number of critically ill patients and the development of surgical techniques, the requirements for myocardial protection in cardiac surgery are becoming increasingly higher. In order to obtain a clean, bloodless surgical field, the heart is usually isolated from the systemic circulation by blocking the ascending aorta and the superior and inferior vena cava, but this will cause myocardial cell ischemia and hypoxia. At normal temperature and without cardiac arrest, the heart can only tolerate ischemia for a few minutes. Therefore, the use of cardioplegia solution for myocardial protection and thus prolonging the tolerance time of myocardial ischemia and hypoxia has become one of the keys to the success of cardiac surgery.
[0003] A cardioplegia solution perfusion needle is required for perfusion of cardioplegia solution. The existing perfusion needle is a disposable item, including an indwelling tube. The end of the indwelling tube close to the human body is inserted into the aorta, and the end of the indwelling tube away from the human body is used to introduce the cardioplegia solution. The cardioplegia solution is perfused into the aorta through the indwelling tube. Since perfusion operations above the aorta are relatively dangerous, in order to ensure the safety and effectiveness of perfusion operations clinically, a pressure monitoring device needs to be connected to the end of the indwelling tube located outside the human body to monitor the perfusion pressure. The pressure monitoring device will come into contact with the patient's blood when working, and often needs to be a disposable item. However, the existing pressure monitoring devices are complex in structure and high in cost, resulting in high costs for cardiac perfusion. Utility Model Content
[0004] The technical problem to be solved by the utility model is that the existing cardiac arrest solution perfusion needle needs to be additionally connected to a pressure monitoring device, and the existing pressure monitoring device has a complex structure and a high cost, resulting in a high cost of cardiac perfusion.
[0005] In order to solve the above technical problems, the purpose of the utility model is to provide a cardiac arrest solution perfusion needle, comprising:
[0006] An indwelling tube, wherein one end of the indwelling tube away from the human body is connected to a first valve body, and one end of the first valve body away from the indwelling tube is used to connect to a cardioplegic solution infusion device;
[0007] A pressure measuring branch pipe, wherein a first end of the pressure measuring branch pipe is connected to the middle portion of the indwelling tube, and a second end of the pressure measuring branch pipe is connected to a second valve body;
[0008] A transparent capillary tube, wherein the first end of the transparent capillary tube is connected to the middle part of the pressure measuring branch tube, the second end of the transparent capillary tube is closed, and the tube wall of the transparent capillary tube is provided with a pressure scale.
[0009] As a preferred solution, one end of the second valve body away from the pressure measuring branch pipe is connected to a first pipe joint for connecting to a negative pressure device.
[0010] As a preferred solution, one end of the first valve body away from the indwelling tube is provided with a second pipe joint for connecting to a cardioplegic solution infusion device;
[0011] The inner wall of the second pipe joint is provided with an internal thread, the cardiac arrest solution perfusion needle comprises a puncture needle inserted into the indwelling tube, the non-puncture end of the puncture needle is provided with an external thread, and the external thread is threadably matched with the internal thread.
[0012] As a preferred solution, a limiting protrusion is provided on the outer side of the end of the indwelling tube close to the human body for limiting the insertion depth of the indwelling tube into the arterial blood vessel.
[0013] As a preferred solution, a lateral liquid outlet is provided on the tube wall of the indwelling tube, and the lateral liquid outlet is located between the limiting protrusion and the front end of the indwelling tube.
[0014] As a preferred solution, the cardioplegia solution perfusion needle includes a protective cap, and the protective cap is arranged on the outer side of the end of the indwelling tube close to the human body.
[0015] As a preferred solution, a reinforcing rib for enhancing the bending resistance of the indwelling tube is provided on the outer side of the indwelling tube near the first valve body.
[0016] As a preferred solution, a plurality of reinforcing ribs are provided, and the reinforcing ribs are arranged at intervals in the axial direction around the indwelling tube.
[0017] As a preferred solution, the transparent capillary is fixed on the outside of the pressure measuring branch tube.
[0018] As a preferred solution, the transparent capillary tube is arranged in parallel with the pressure measuring branch tube.
[0019] Compared with the prior art, the beneficial effects of the utility model are:
[0020] The utility model provides a cardiac arrest solution infusion needle, comprising an indwelling tube, a pressure measuring branch tube and a transparent capillary tube. The end of the indwelling tube away from the human body is connected with a first valve body, and the end of the first valve body away from the indwelling tube is used to connect a cardiac arrest solution infusion device; the first end of the pressure measuring branch tube is connected with the middle part of the indwelling tube, and the second end of the pressure measuring branch tube is connected with a second valve body; one end of the transparent capillary tube is connected with the middle part of the pressure measuring branch tube, and the other end of the transparent capillary tube is closed, and a pressure scale is provided on the tube wall of the transparent capillary tube; after the end of the indwelling tube close to the human body is placed in the arterial blood vessel, the second valve body is first opened, and the blood in the arterial blood vessel fills the pressure measuring branch tube under the action of the patient's blood pressure. After the tube is inserted, the second valve body is closed and the first valve body is opened, and cardiac arrest solution is injected into the indwelling tube through the first valve body. The perfusion pressure of the cardiac arrest solution will press the blood remaining in the pressure measuring branch tube into the first end of the transparent capillary tube. Since the second end of the transparent capillary tube is closed, the air in the transparent capillary tube is in a sealed state, and the perfusion pressure of the cardiac arrest solution can be obtained according to the liquid level of the blood in the transparent capillary tube. Therefore, the cardiac arrest solution injection needle of the utility model can monitor the perfusion pressure at the same time, and the transparent capillary tube used to monitor the perfusion pressure has a simple structure and low manufacturing cost, and does not need to be additionally connected with a pressure monitoring device, thereby reducing the cost of cardiac perfusion. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a first front view of the cardiac arrest solution perfusion needle of the utility model;
[0022] Figure 2 It is a second front view of the cardiac arrest solution perfusion needle of the utility model;
[0023] In the figure, 1. indwelling tube, 11. limiting protrusion, 12. lateral liquid outlet, 13. reinforcing rib, 21. first valve body, 22. second valve body, 3. pressure measuring branch tube, 4. transparent capillary tube, 51. first pipe joint, 52. second pipe joint, 6. puncture needle, 61. wrench head, 7. protective cap. DETAILED DESCRIPTION
[0024] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0025] In the description of the present utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. It should be understood that the terms "first", "second", etc. are used in the present utility model to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present utility model, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.
[0026] like Figure 1 , Figure 2 As shown, a preferred embodiment of a cardiac arrest solution perfusion needle of the utility model comprises:
[0027] An indwelling tube 1, an end of the indwelling tube 1 away from the human body is connected to a first valve body 21, and an end of the first valve body 21 away from the indwelling tube 1 is used to connect a cardioplegic solution infusion device;
[0028] A pressure measuring branch pipe 3, a first end of which is connected to the middle of the indwelling tube 1, and a second end of which is connected to a second valve body 22;
[0029] A transparent capillary tube 4, a first end of which is connected to the middle of the pressure measuring branch tube 3, a second end of which is closed, and a pressure scale is provided on the wall of the transparent capillary tube 4.
[0030] After the end of the indwelling tube 1 close to the human body is placed in the artery, the second valve body 22 is opened first. At this time, the blood in the patient's artery flows into the indwelling tube 1 under the action of blood pressure. Since the second end of the transparent capillary 4 is closed, the blood cannot enter the transparent capillary 4. After the blood in the artery fills the pressure measuring branch tube 3 under the action of the patient's blood pressure, the second valve body 22 is closed and the first valve body 21 is opened, and then cardiac arrest solution is injected into the indwelling tube 1 through the first valve body 21. The perfusion pressure of the cardiac arrest solution will press the blood remaining in the pressure measuring branch tube 3 into the first end of the transparent capillary 4. The air in the transparent capillary tube 4 is in a sealed state, and the air compression amount in the transparent capillary tube 4 can be obtained according to the liquid level of the blood in the transparent capillary tube 4, and then the air pressure in the transparent capillary tube 4 can be obtained. The air pressure in the transparent capillary tube 4 is combined with the capillary resistance of the transparent capillary tube 4 to obtain the perfusion pressure of the cardiac arrest solution; therefore, the cardiac arrest solution injection needle of the utility model can monitor the perfusion pressure at the same time, and the transparent capillary tube 4 used to monitor the perfusion pressure has a simple structure and low manufacturing cost, and does not need to be additionally connected to a pressure monitoring device, thereby reducing the cost of cardiac perfusion.
[0031] Cardiac surgery for perfusion of cardiac arrest solution often requires cutting open the heart. After the heart is cut open, suturing it again will cause air to enter the heart, accompanied by bubbles in the blood. To facilitate the discharge of bubbles in the blood, in this embodiment, the end of the second valve body 22 away from the pressure measuring branch pipe 3 is connected to a first pipe joint 51 for connecting to a negative pressure device. After the heart is sutured, the first valve body 21 is closed, the first pipe joint is connected to the negative pressure device, and the blood containing bubbles is extracted using the negative pressure device to achieve back extraction of the blood containing bubbles.
[0032] To facilitate the placement of the indwelling tube 1 into the human artery, in this embodiment, the end of the first valve body 21 away from the indwelling tube 1 is provided with a second pipe joint for connecting to a cardiac arrest solution infusion device; the inner wall of the second pipe joint 52 is provided with an internal thread, and the cardiac arrest solution infusion needle includes a puncture needle 6 penetrated into the indwelling tube 1, and the non-puncture end of the puncture needle 6 is provided with an external thread, and the external thread cooperates with the internal thread.
[0033] Specifically, the puncture needle 6 is inserted into the indwelling tube 1. The puncture needle 6 is a stainless steel needle. The puncture end of the puncture needle 6 protrudes from the end of the indwelling tube 1 close to the human body, and the non-puncture end of the puncture needle 6 protrudes from the end of the indwelling tube 1 away from the human body. After the puncture is completed, when the puncture needle 6 needs to be removed, the non-puncture end of the puncture needle 6 can be rotated to remove the puncture needle 6 from the indwelling tube 1. In this embodiment, the valve cavity diameter of the first valve body 21 when the first valve body 21 is in the open state is larger than the diameter of the puncture needle 6, and the puncture needle 6 is simultaneously inserted into the indwelling tube 1 and the first valve body 21. In order to facilitate the screwing of the puncture needle 6, in this embodiment, a wrench head 61 is provided at the end of the puncture needle 6 away from the human body.
[0034] In order to prevent the indwelling tube 1 or the puncture needle 6 from penetrating too deep into the blood vessel and puncturing the blood vessel wall, in this embodiment, a limiting protrusion 11 is provided on the outer side of the end of the indwelling tube 1 close to the human body for limiting the insertion depth of the indwelling tube 1 into the arterial blood vessel.
[0035] In this embodiment, the wall of the indwelling tube 1 is provided with a lateral liquid outlet 12, and the lateral liquid outlet 12 is located between the limiting protrusion 11 and the front end of the indwelling tube 1. In this embodiment, a lateral liquid outlet 12 is symmetrically provided on both sides of the indwelling tube 1 to disperse the blood flow at the proximal end of the indwelling tube 1 and reduce the local perfusion pressure.
[0036] In order to prevent the tip of the puncture needle 6 or the indwelling tube 1 from piercing the packaging bag, in this embodiment, the cardioplegic solution perfusion needle includes a protective cap 7, which is covered on the outer side of the end of the indwelling tube 1 close to the human body.
[0037] In this embodiment, a reinforcing rib 13 is provided on the outer side of the indwelling tube 1 near the first valve body 21 to enhance the bending resistance of the indwelling tube 1. The reinforcing rib 13 is attached to the surface of the indwelling tube 1 in a wing shape to enhance the strength of the indwelling tube 1 and prevent the indwelling tube 1 from bending and folding. In this embodiment, the end of the indwelling tube 1 away from the human body is threadedly connected to the liquid outlet end of the first valve body 21.
[0038] Specifically, a plurality of reinforcing ribs 13 are provided, and the reinforcing ribs 13 are arranged at intervals in the axial direction around the indwelling tube 1 .
[0039] In order to ensure that the structure of the cardioplegia solution perfusion needle of this embodiment is compact, the transparent capillary tube 4 is fixed on the outside of the pressure measuring branch tube 3. Furthermore, the transparent capillary tube 4 and the pressure measuring branch tube 3 are arranged in parallel.
[0040] The method of using the cardiac arrest solution perfusion needle of the utility model is as follows:
[0041] First, use the puncture needle 6 to puncture the artery and bring the end of the indwelling tube 1 close to the human body into the artery, then turn the wrench head 61 to remove the puncture needle 6 from the indwelling tube 1, and close the first valve body 21; then open the second valve body 22 to allow the pressure measuring branch tube 3 to be filled with blood, then close the second valve body 22, connect the second pipe joint 52 to the cardiac arrest solution infusion device, open the first valve body 21 to start infusing the cardiac arrest solution, and adjust the infusion pressure by observing the liquid level scale in the transparent capillary 4 during the infusion process to ensure that the infusion pressure is appropriate; after the infusion is completed, close the first valve body 21, connect the first pipe joint 51 to the negative pressure device, and start to pump back the blood. After the pumping is completed, close the second valve body 22 and take out the indwelling tube 1.
[0042] In summary, the cardiac arrest solution infusion needle of the utility model comprises an indwelling tube 1, a pressure measuring branch tube 3 and a transparent capillary tube 4, the end of the indwelling tube 1 away from the human body is connected to a first valve body 21, and the end of the first valve body 21 away from the indwelling tube 1 is used to connect a cardiac arrest solution infusion device; the first end of the pressure measuring branch tube 3 is connected to the middle part of the indwelling tube 1, and the second end of the pressure measuring branch tube 3 is connected to the second valve body 22; one end of the transparent capillary tube 4 is connected to the middle part of the pressure measuring branch tube 3, and the other end of the transparent capillary tube 4 is closed, and the tube wall of the transparent capillary tube 4 is provided with a pressure scale; after the end of the indwelling tube 1 close to the human body is placed in the arterial blood vessel, the second valve body 22 is opened first, and the blood in the arterial blood vessel is cooled by the patient's blood pressure. After the pressure measuring branch tube 3 is filled, the second valve body 22 is closed and the first valve body 21 is opened, and cardiac arrest solution is injected into the indwelling tube 1 through the first valve body 21. The perfusion pressure of the cardiac arrest solution will press the blood remaining in the pressure measuring branch tube 3 into the first end of the transparent capillary 4. Since the second end of the transparent capillary 4 is closed, the air in the transparent capillary 4 is in a sealed state, and the perfusion pressure of the cardiac arrest solution can be obtained according to the liquid level of the blood in the transparent capillary 4; therefore, the cardiac arrest solution injection needle of the utility model can monitor the perfusion pressure at the same time, and the transparent capillary 4 used to monitor the perfusion pressure has a simple structure and low manufacturing cost, and does not require an additional pressure monitoring device to be connected, thereby reducing the cost of cardiac perfusion.
[0043] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.
Claims
1. A cardioplegic solution perfusion needle, characterized in that: include: An indwelling tube (1), wherein the end of the indwelling tube (1) away from the human body is connected to a first valve body (21), and the end of the first valve body (21) away from the indwelling tube (1) is used to connect to a cardiac arrest solution infusion device; a pressure measuring branch pipe (3), wherein a first end of the pressure measuring branch pipe (3) is connected to the middle part of the indwelling tube (1), and a second end of the pressure measuring branch pipe (3) is connected to a second valve body (22); A transparent capillary tube (4), wherein the first end of the transparent capillary tube (4) is connected to the middle of the pressure measuring branch tube (3), the second end of the transparent capillary tube (4) is closed, and the tube wall of the transparent capillary tube (4) is provided with a pressure scale.
2. The cardioplegic solution perfusion needle according to claim 1, characterized in that: One end of the second valve body (22) away from the pressure measuring branch pipe (3) is connected to a first pipe joint (51) for connecting to a negative pressure device.
3. The cardioplegic solution perfusion needle according to claim 1, characterized in that: The end of the first valve body (21) away from the indwelling tube (1) is provided with a second pipe joint (52) for connecting to a cardiac arrest solution infusion device; The inner wall of the second pipe joint (52) is provided with an internal thread, and the cardiac arrest solution perfusion needle comprises a puncture needle (6) inserted into the indwelling tube (1), and the non-puncture end of the puncture needle (6) is provided with an external thread, and the external thread is matched with the internal thread.
4. The cardioplegic solution perfusion needle according to claim 1, characterized in that: A limiting protrusion (11) is provided on the outer side of the end of the indwelling tube (1) close to the human body, which is used to limit the insertion depth of the indwelling tube (1) into the arterial blood vessel.
5. The cardioplegic solution perfusion needle according to claim 4, characterized in that: The tube wall of the indwelling tube (1) is provided with a lateral liquid outlet (12), and the lateral liquid outlet (12) is located between the limiting protrusion (11) and the front end of the indwelling tube (1).
6. The cardioplegic solution perfusion needle according to claim 4, characterized in that: The cardioplegia solution perfusion needle comprises a protective cap (7), and the protective cap (7) is arranged to cover the outer side of the end of the indwelling tube (1) close to the human body.
7. The cardioplegic solution perfusion needle according to claim 1, characterized in that: A reinforcing rib (13) for enhancing the bending resistance of the indwelling tube (1) is provided on the outer side of the indwelling tube (1) at a position close to the first valve body (21).
8. The cardioplegic solution perfusion needle according to claim 7, characterized in that: A plurality of reinforcing ribs (13) are provided, and each of the reinforcing ribs (13) is arranged at intervals in the axial direction around the indwelling tube (1).
9. The cardioplegic solution perfusion needle according to claim 1, characterized in that: The transparent capillary tube (4) is fixed on the outside of the pressure measuring branch tube (3).
10. The cardioplegic solution perfusion needle according to claim 9, characterized in that: The transparent capillary tube (4) is arranged in parallel with the pressure measuring branch tube (3).