CN204016286U - A kind of intracavity electrocardiogram guidance system - Google Patents

Abstract

The utility model relates to an intracavitary electrogram guidance system. The structure of the utility model is that the physiological saline bottle is connected with the infusion set, the end of the infusion set is connected with the PICC, the PICC contains and is connected with a guide wire, the end has a three-way valve, the guide wire is connected with the RA connector, and the RA connector is connected with the monitor. The utility model overcomes the defects that the manual injection of physiological saline by the syringe in the past cannot form a uniform intraluminal pressure greater than 80mmHg, establishes a continuous and uniform saline column, and guides continuous, stable and clear intracavity electrograms. The utility model can be applied to PICCs of all structures to perform real-time dynamic intracavitary electrogram positioning, operated by a nurse alone, with the least amount of physiological saline, the most uniform flow rate of physiological saline and ensuring the aseptic requirements of the lead wires.

Description

An intracavitary electrogram guidance system

technical field

The utility model relates to a medical device, in particular to an intracavitary electrogram guidance system.

Background technique

Before the invention of the utility model, the intracavity electrogram positioning method is to utilize the metal probe electrode to judge the position of the central venous catheter (PICC) tip through peripheral venous puncture by observing the changes of the intracavity electrogram (ECG) P wave, PICC ( Peripherally inserted central catheters are inserted into the central venous catheter through peripheral venous puncture). Although the method of manually injecting normal saline solves the problem that the metal guide wire in the closed-end PICC cannot establish conduction with the patient's blood flow, at the same time, the saline can also be replaced by normal saline instead of the original 10% sodium chloride, which is safer. However, in the course of clinical practice, it has been found that the continuous manual injection of saline in the syringe to keep the valve open has the following defects:

1. Manual injection of saline with a syringe cannot keep the three-way valve open continuously. Using a syringe to manually inject normal saline can not form a uniform intraluminal pressure greater than 80mmHg, so that the valve at the end of the PICC is in a continuous open state, and a continuous and uniform saline column is established to guide a continuous, stable and clear intraluminal ECG.

2. Using a syringe to manually inject physiological saline cannot enable the operating nurse to truly achieve the purpose of real-time dynamic observation of intracavitary ECG changes. If the nurse manually pushes the empty saline needle to establish the saline column in the PICC lumen, it is necessary to suspend the ongoing tube feeding action, because the tube feeding action is intermittent, and the electrocardiogram shows that the catheter stays in a certain vein position Intracavitary electrocardiographic signals, it is impossible to observe the changes of the P-wave of the ECG on the monitoring screen while delivering the catheter, and the hand-eye synchronization between feeding the catheter and observing the P-wave changes of the ECG cannot be achieved, and real-time positioning cannot be achieved, which reduces the advantage of real-time judgment.

3. In order for the operating nurse to truly achieve the purpose of real-time dynamic observation of intracavitary ECG changes, an assistant must be added to assist in increasing labor costs. In order to ensure the continuity of the operation of the nurse who placed the tube and achieve the real-time positioning of the intracavity ECG, another nurse is needed to assist in the operation, and the actions of the two nurses must be coordinated, otherwise there will be inconsistency in pulling the catheter and causing the catheter to slip. Risks, while increasing the cooperation of one person also increases labor costs.

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned defects and develop an intracavitary electrogram guidance system.

The technical scheme of the utility model is:

An intracavitary electrogram guidance system, the physiological saline bottle is connected to the infusion set, its main technical feature is that the end of the infusion set is connected to the PICC, the PICC contains a guide wire and is connected, and the end has a three-way valve, the guide wire is connected to the RA connector, and the RA connector is connected to the to the monitor.

Regulators are provided on the infusion set.

The advantages and effects of the utility model are: 1. It can be applied to PICCs of all structures. 2. Real-time dynamic intracavitary electrogram positioning can be performed. 3. It can be operated by a nurse alone. 4. Minimal saline dosage. 5. The most uniform saline flow rate. 6. Guarantee the sterility requirements of the lead wires.

Description of drawings

Fig. 1 - schematic diagram of the structure principle of the utility model.

Normal saline bottle 1, infusion set 2, regulator 3, PICC4, guide wire 5, three-way valve 6, saline column 7, RA connector 8, monitor 9, intracavitary electrogram 10.

Detailed ways

The technical idea of the present utility model is:

Use an infusion set to connect normal saline to the PICC, and use the method of continuous and uniform infusion of normal saline to form a uniform intraluminal pressure greater than 80mmHg, keep the three-way valve at the end of the PICC in a continuous open state, and establish a continuous and uniform saline column. It leads to a continuous, stable and clear intracavitary ECG, and all procedures only need to be completed by one operating nurse, truly achieving the purpose of real-time dynamic observation of intracavity ECG changes.

The utility model is described in detail below.

As shown in Figure 1:

The underside of the saline bottle 1 is connected to the infusion set 2 with a regulator 3 on it. The end of the infusion set 2 is connected to the tail end of the PICC4. The tip of the PICC4 is placed in the human vein. The PICC4 is connected with a guide wire 5 and a three-way valve 6 at the end. The saline column 7 is filled, the guide wire 5 is respectively connected to the infusion set 2, the PICC 4, and the RA connector 8, and the tail end of the RA connector 8 is connected to the monitor 9, and the intracavity electrogram 10 is displayed on the monitor 9.

Description of the utility model application process:

Before the PICC4 is placed in the human vein, first use the monitor 9 to record the patient's body surface ECG. The electrode positions of the three-lead ECG monitor are: RA (the first intercostal space of the clavicle midline at the right margin of the sternum); First intercostal space on the left midclavicular line); LL (at the level of the xiphoid process on the left midclavicular line).

After inserting PICC4 into the vein of the human body about 15cm from the upper arm (reaching the level of the axillary vein), connect the normal saline bottle 1 to the PICC4 through the infusion set 2, and open the regulator 3 to continuously drip the normal saline into the PICC4. The saline column 7 is formed, and the saline column 7 is connected with the blood in the vein of the human body. The Groshong three-way valve PICC design principle is used, that is, there is a valve on the front side wall of the PICC4. When the pressure in the lumen of the PICC4 is greater than 80mmHg, the three-way valve 6 opens outward to allow liquid to enter the human body.

Using the regulator 3 on the infusion set 2 to automatically control the flow rate of normal saline, the purpose is to form a continuous and balanced pressure in the PICC lumen without manual injection of liquid to let the PICC4 form the intraluminal pressure, and establish a continuous and uniform saline The column 7 and the three-way valve 6 are in a continuous and automatic opening state, and the saline column 7 forms a permanent connection state with the blood in the vein of the human body.

Remove the RA lead wire originally connected to the patient from the monitor 9, and replace it with the prepared sterile RA connector 8, connect the front end of the RA connector 8 to the guide wire 5 in the PICC4, and connect the tail end to the monitor wire. Instrument 9, using two different techniques of intracavity ECG positioning method: one is "metal guide wire technology", the intracavity electrode is a metal guide wire 5 inserted in the PICC4; the other is "saline column technology", the intracavity electrode is a Saline column 7 contained within PICC4. This guidance system automatically controls the flow rate of physiological saline through the regulator 3 on the infusion set 2, which can make the three-way valve 6 at the end of the PICC4 be in a continuous and automatic open state, and the saline column 7 forms a permanent connection with the blood in the human vein, which solves the problem of closed end The metal guide wire in the PICC cannot establish conduction with the patient's blood flow. Through the connection conduction between the RA connector 8 and the guide wire 5 in the PICC4, the changes of the ECG 10 in the venous cavity are displayed on the monitor 9 .

While the nurse inserting the catheter slowly and uniformly sends the PICC4 into the vein, the monitor 9 dynamically observes the intracavitary ECG changes of the tip of the PICC4 catheter in different positions in the vein cavity in real time, and judges the characteristic P wave changes when the tip of the PICC4 catheter enters the atrium , to determine the optimal position of the PICC4 catheter tip. All catheterization and intracavitary electrogram guidance and dynamic observation procedures only need to be completed by one operating nurse, saving human resources.

Claims (2)

1. an intracavity electrocardiogram guidance system, normal saline bottle connects transfusion device, it is characterized in that transfusion device end connects PICC, and PICC contains seal wire and connects, and end has three-dimensional valve, and seal wire connects RA union joint, and RA union joint is connected to monitor.

2. a kind of intracavity electrocardiogram guidance system according to claim 1, is characterized in that on transfusion device with actuator.