CN110251807B

CN110251807B - Sterile switching device for in-vivo and in-vitro electrocardiogram lead

Info

Publication number: CN110251807B
Application number: CN201910521892.2A
Authority: CN
Inventors: 李凌峰; 陈真; 郑素惠
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-06-17
Filing date: 2019-06-17
Publication date: 2022-09-23
Anticipated expiration: 2039-06-17
Also published as: CN110251807A

Abstract

The invention discloses a sterile switching device of an internal and external electrocardio lead and an operation method thereof in the technical field of central venous catheters, which comprises a B-ultrasonic probe, an electrocardio monitor, a lead switching device, a sterile sleeve, an external electrocardio lead wire, an internal guide wire lead wire and a central venous catheter, wherein a conductive positioning guide wire is arranged in the central venous catheter, the invention uses a complete isolation mode, effectively reduces the possibility of bacterial infection, does not need two medical personnel to perform operation simultaneously, saves manpower, directly performs switching operation through the sterile sleeve when the medical personnel operate the lead switching device, is always in a sterile area, does not need repeated sterilization and degerming, saves sterilization operation and sterilization loss products, is simple to operate, simplifies switching operation, saves operation time, thereby reducing the time for exposing an operation wound, reduces the infection risk and improves the success rate of the operation.

Description

Sterile switching device for electrocardio leads in vivo and in vitro

Technical Field

The invention relates to the technical field of venous catheters in medical centers, in particular to an in-vivo and in-vitro electrocardio lead sterile switching device.

Background

The central venous catheter belongs to one of the intravascular tubes and is placed in the great vein, and the catheter has the following purposes: 1. measuring central venous pressure (central venous pressure) to assess circulatory physiological parameters, and to estimate fluid quality;

2. a large amount of rapid venous transfusion is often performed in operations with large blood loss or in emergency to maintain blood pressure;

3. the administration routes of long-term parenteral nutrition, long-term antibiotic injection, and long-term analgesic injection;

4. for drugs that are more irritating to peripheral veins (venules), infusion from a central venous catheter is modified.

For example: amiodarone and the like;

5. as a line for hemodialysis, such as plasmapheresis or kidney washing;

6. the chemotherapy of tumor can prevent chemical phlebitis and prevent medicine liquid from exosmosis;

7. a good infusion channel is established for a patient who carries out infusion repeatedly, so that the pain of repeated puncture is avoided;

8. an infusion path is established for the critically ill patient.

At present, a plurality of parts of a central venous catheter which are placed into a body can be operated, but the operation methods are the same, the puncture part is disinfected conventionally and paved singly, after local anesthesia of a puncture point, a disposable puncture needle is firstly used for blood return, a needle head is fixed by the left hand, a guide wire is sent to a right hand to reach a proper length, after the guide wire is fixed, the needle head is withdrawn, a dilator expands subcutaneously, the central venous catheter is placed into the central venous catheter through a dilator guiding sheath, all operation medical personnel need to carry out aseptic operation, the aseptic mode is that hands wear aseptic gloves, and a patient operation part needs to use a disinfection apparatus;

because the central venous catheter is placed in a human body, at present, no good method is used for determining the accurate position of the central venous catheter inserted into a venous blood vessel during an operation, an experienced medical staff is required for guidance, and slowly along with the development of medical equipment, the medical staff in the operation uses an electrocardiogram monitor to connect a lead connected with the body surface into the lead in the central venous catheter, the position of a metal positioning lead in the venous blood vessel is judged by the electrocardiogram monitor, because the metal lead and the tail end of the central venous catheter are in the same position, the position of the central venous catheter in the venous blood vessel can be judged, but because the operator in the operation needs to perform aseptic operation in the whole process, and needs to detect the physical sign of a patient when the venous blood vessel is punctured, the electrocardiogram monitor at the moment is connected with an electrocardiogram electrode plate for monitoring the body surface of the patient, when the puncture is successful and the position of the central venous catheter needs to be checked, the electrocardiograph monitor needs to be connected with the metal positioning guide wire in the central venous catheter, the environment where the electrocardiograph electrode plate on the body surface of the patient is located is regarded as a bacteria environment, so that another person needs to take down the connecting metal wire connected with the electrocardiograph electrode plate on the body surface of the patient, and then the metal wire is connected with the metal positioning guide wire in the central venous catheter, and the electrocardiograph monitor can monitor the electrocardiograph physiological parameters in the patient, so that the position of the metal positioning guide wire extending into the venous blood vessel can be judged through the electrocardiograph monitor, and the accurate position of the central venous catheter in the venous blood vessel can be accurately judged.

The operation mode can only have two solutions, the first one is that the switching operation of the ECG monitor is completed as soon as possible by single operation, so that the possibility of a large amount of bacterial infection is avoided; secondly, two operation operators are needed, one medical operator completes the aseptic operation, and the other medical operator assists to complete the aseptic operation, but because the aseptic operation and the aseptic operation are carried out, the aseptic operation and the aseptic operation are required to be carried out alternately at times according to the operation progress state, so the two medical operators are needed to carry out the operation at any time; therefore, manpower waste is generated, only simple switching of the ECG monitor is needed at each time due to the bacteria step, but now either the risk of bacterial infection is increased, or two medical staff are needed to perform a simple operation at the same time, a convenient operation device is needed to change the situation, due to the difficulty of cultivation of the medical staff, the operation is performed by one medical staff at present, but the sterilization operation needs to be performed repeatedly in the operation process, so that a large amount of operation time is wasted, the operation risk is increased, the wound of a patient is exposed outside, and the risk of infection is increased while the operation time is increased.

Based on the above, the invention designs an in vivo and in vitro electrocardio lead sterile switching device to solve the problems.

Disclosure of Invention

The invention aims to provide an in-vivo and in-vitro electrocardio-lead sterile switching device which can finish sterile operation by a single person, does not increase operation time, does not increase the sterilization times of operation medical staff, has simpler and more convenient steps for switching an electrocardio monitor and faster switching speed, thereby reducing the operation time and the operation risk of placing a central venous catheter in a venous blood vessel.

The invention is realized in the following way: a sterile switching device for in-vivo and in-vitro electrocardiogram leads comprises a B-ultrasonic probe, an electrocardiogram monitor, a lead switching device, a sterile sleeve, an in-vitro electrocardiogram lead wire, an in-vivo lead wire and a central venous catheter, wherein a conductive positioning lead wire is arranged in the central venous catheter, the tail end in the positioning lead wire and the tail end in the central venous catheter are in the same position, the positioning lead wire and the central venous catheter are positioned outside the sterile sleeve, the positioning lead wire, the central venous catheter and the sterile sleeve are all placed on a sterile operating table, the B-ultrasonic probe, the lead switching device, the lead wire and a part of in-vitro electrocardiogram lead wire are all arranged in the sterile sleeve, one of the lead wire or the in-vitro electrocardiogram lead wire can be switched and connected through the lead switching device and is electrically connected with the electrocardiogram monitor, and the other end of the lead wire is also detachably connected with the outer end of the positioning lead wire, the external electrocardio lead wire is also connected with a body surface electrocardio electrode plate;

the central venous catheter and the positioning guide wire are placed on a sterile operating table top, and the central venous catheter and the positioning guide wire are not in contact with an external electrocardio lead wire;

one end of the external electrocardio lead wire is clamped on a body surface electrocardio electrode sheet which is stuck to the right upper limb of the human body through an alligator clip;

one end of the external electrocardio lead wire is clamped on a body surface electrocardio electrode sheet which is stuck to the right upper limb of the human body through an alligator clip.

The beneficial effects of the invention are: the invention firstly winds the guide wire lead wire and the B-ultrasonic probe together, so that when the B-ultrasonic probe moves to search blood vessels, the guide wire lead wire can also move along, so that the positioning guide wire cannot be separated from the guide wire lead wire too far, the pulling of the positioning guide wire is avoided, the operation wound on the body surface of a patient cannot be damaged, then the guide wire lead wire and the guide wire switching device are isolated in the sterile sleeve, and the guide wire lead wire is clamped with the positioning guide wire in a sterile area, thus the possibility of bacterial infection is effectively reduced by a completely isolated mode, and the device can finish whether the external ECG lead wire or the internal positioning guide wire is connected with the ECG monitor by one person through switching the circuit connected with the ECG monitor by the guide wire switching device, does not need two medical personnel to perform operation simultaneously, saves labor, because the guide wire switching device is isolated in the sterile sleeve, and aseptic district of operation is outside to aseptic cover, directly separate aseptic cover when medical staff operates wire auto-change over device and carry out the switching operation like this, medical staff is in aseptic district all the time, just need not disinfect and sterilize repeatedly, disinfection operation and disinfection consumptive product have been saved, the operation cost has been saved, moreover, the operation is simple, only need promote wire auto-change over device gently and can accomplish the switching, the switching operation is simple and convenient, the operation time has been saved, thereby the time that the operation wound exposes has been reduced, the infection risk has been reduced, the operation success rate has been improved, be worth promoting more clinicians, bring the benefit for the disease.

Drawings

The invention will be further described with reference to the following examples and figures.

FIG. 1 is a schematic view of the connection and installation of various components of the structure of the present invention.

In the drawings, the reference numbers indicate the following list of parts:

the system comprises a 1-B ultrasonic probe, a 11-B ultrasonic instrument, a 2-ECG monitor, 21-body surface ECG electrode plates, 22-loop electrode plates, 3-lead switching devices, 4-sterile sleeves, 41-winding pipes, 5-external ECG lead wires, 6-lead wire lead wires, 7-central venous catheters and 71-positioning guide wires.

Detailed Description

Referring to fig. 1, the present invention provides a technical solution: an aseptic switching device of an internal and external electrocardio lead comprises a B-ultrasonic probe 1, an electrocardio monitor 2, a lead switching device 3, an aseptic sleeve 4, an external electrocardio lead wire 5, an internal guide wire lead wire 6 and a central venous catheter 7, wherein a positioning guide wire 71 capable of conducting electricity is arranged in the central venous catheter 7, the tail end in the positioning guide wire 71 is positioned at the same position as the tail end in the central venous catheter 7, the positioning guide wire 71 and the central venous catheter 7 are positioned outside the aseptic sleeve 4, the positioning guide wire 71, the central venous catheter 7 and the aseptic sleeve 4 are all arranged on an aseptic operating table, the B-ultrasonic probe 1, the lead switching device 3, the guide wire lead wire 6 and a part of the external electrocardio lead wire 5 are all arranged in the aseptic sleeve 4, one of the guide wire lead wire 6 or the external electrocardio lead wire 5 can be switched and connected with the electrocardio monitor 2 electrically through the lead switching device 3, the other end of the guide wire lead wire 6 is also connected with the external end of the positioning guide wire 71 in a separable way, the external ECG lead wire 5 is also connected with the body surface ECG electrode plate 21, so that the medical staff can conveniently adjust the working position of the guide wire switching device 3 in a sterile environment, the ECG monitor 2 can be conveniently switched to display the physiological parameters in vivo or in vitro, the medical staff can conveniently observe the physical signs of a patient during the operation, the uncontrollable time and the time of uncertain physical signs are reduced, the risk of bacterial pollution in the operation is reduced due to the aseptic operation, the operation risk is reduced, the switching is very convenient, the clamp does not need to be moved any more, the operation steps are simplified, the switching time is shortened, the speed is faster, the situation of poor contact of clamped places can not occur, the switching stability of the device is improved, and the operation time is further shortened from the aspects, the exposure time of the wound of the patient in the air is reduced, the risk that the patient is infected in the operation is reduced, and the method is worthy of popularization and brings benefits to doctors and patients.

Wherein, the guide wire lead wire 6 is clamped with the positioning guide wire 71 through an alligator clip, the alligator clip connected with the guide wire lead wire 6 is arranged in the sterile sleeve 4, the guide wire lead wire 6 is isolated from the positioning guide wire 71 which needs to be extended into the body, the stroke is in a sterile environment, the risk of infection of patients is reduced, the B-ultrasonic probe 1 and the guide wire lead wire 6 are bound into a whole body through the winding pipe 41 in a sliding way, the winding pipe 41 is arranged in the sterile sleeve 4, the sterile sleeve 4 is made of low-density polyethylene, thus being convenient for the B-ultrasonic probe 1 and the guide wire lead wire 6 to move simultaneously, avoiding mutual winding and simultaneously moving, avoiding pulling to the positioning guide wire 71 when exploring blood vessels, the central venous catheter 7 and the positioning guide wire 71 are arranged on a sterile operation table top, the central venous catheter 7 and the positioning guide wire 71 are not contacted with the external electrocardio lead wire 5, and keeping the central venous catheter 7 and the positioning guide wire 71 in a sterile state at any time, the patient is prevented from being infected, one end of the external electrocardio-lead wire 5 is clamped on the body surface electrocardio-electrode plate 21 which is stuck to the right upper limb of the human body through an alligator clip, which is the normal installation condition and environment of the external electrocardio-lead wire 5, and the position of the right upper limb accords with the physiological parameters to be monitored of the device on the electrocardio-monitor 2;

an aseptic operation method for fast switching of in-vivo and in-vitro electrocardiogram leads, which needs to provide an aseptic switching device for in-vivo and in-vitro electrocardiogram leads, and comprises the following steps:

step 1, electrifying and starting an electrocardiogram monitor 2 and a B-ultrasonic instrument 1, and then installing a connecting line between the B-ultrasonic instrument 1 and the B-ultrasonic probe 1, the B-ultrasonic probe 1 and a guide wire lead line 6 connected to a guide wire switching device 3 in a winding pipe 41 by a medical worker for operation;

step 2, the medical staff connects the ECG monitor 2 with the body surface ECG electrode plate 21; connecting the lead switching device 3 with the ECG monitor 2, simultaneously connecting an external ECG lead wire 5 connected with the lead switching device 3 with a body surface ECG electrode plate 21 on the right chest of a human body, switching the lead switching device 3 to connect the external ECG lead wire 5 with the ECG monitor 2 through the lead switching device 3, and starting monitoring physiological parameters of the body surface ECG reaction of a patient by the ECG monitor 2;

step 3, the medical staff sleeves the B-mode ultrasonic probe 1 sleeved by the winding pipe 41, the guide wire lead wire 6 with the crocodile clip and the guide wire switching device 3 in the sterile sleeve 4, the medical staff starts to sterilize the operation part and the instruments, then all the operation is performed aseptically, the sleeved sterile sleeve 4 is placed on an operation table, the process needs to ensure that the outside of the sterile sleeve 4 is in an aseptic state, and the extracorporeal electrocardio lead wire 5 is not in contact with the sterile sleeve 4;

step 4, the medical staff uses the B-ultrasonic probe 1 to find a vein at the position of a patient, puncture an opening on the vein, and slowly place the central venous catheter 7 with the positioning guide wire 71 in the central venous catheter into the vein from the puncture opening of the vein;

step 5, after the medical staff puts the central venous catheter 7 with the positioning guide wire 71 inside to a preset length of the blood vessel, the crocodile clip connected with the guide wire lead wire 6 clamps the external end of the positioning guide wire 71 through the sterile sleeve 4, then the lead switching device 3 is switched to disconnect the external ECG lead 5 from the ECG monitor 2, meanwhile, the guide wire lead wire 6 is connected with the electrocardiogram monitor 2 through the lead wire switching device 3, the electrocardiogram monitor 2 starts to monitor the physiological parameters of the electrocardio reaction at the inner end of the positioning guide wire 71 body in the vein of the patient, the accurate position of the internal end of the positioning guide wire 71 is determined by the physiological parameters of the electrocardio-reaction at the internal end of the body, then adjusting the position of the inner end of the central venous catheter 7, and continuing to extend or withdraw the central venous catheter 7 along the vein until the central venous catheter 7 is at the required specified depth;

step 6, after the central venous catheter 7 is placed into a vein of a patient, the lead switching device 3 is switched, so that the external electrocardio lead wire 5 is connected with the electrocardio monitor 2 through the lead switching device 3, and the electrocardio monitor 2 monitors physiological parameters reflected by electrocardio on the surface of the patient, in the actual operation process, the operability is strong, the operation can be completed only by one medical staff without human assistance, the operation is divided into a bacteria carrying operation step and a sterile operation step, the operation is not influenced mutually, the sterile operation is started before the vein puncture of the patient, namely after the vein of the patient has a wound, the medical staff is always in a sterile environment, the risk of the patient being infected by bacteria in the operation is effectively reduced, in the risk process, the medical staff can be switched in the sterile environment and the working position of the lead switching device 3 is switched, the electrocardio monitor 2 is switched to monitor physiological parameters of the patient in vivo and in vitro at any time, so that the electrocardio monitor is very convenient, operation steps are reduced, help of others is not needed, the requirement of the operation on the number of medical staff is reduced, bacteria carrying operation is not needed in the operation process, and then the medical staff for the operation is disinfected, so that complicated and dangerous operations are reduced, the operation speed is higher, the time for changing wound exposure is reduced, and the operation risk is reduced;

wherein, the central venous catheter 7 is arranged between the preset length of the blood vessel and 10cm-60 cm; the specified depths of the central venous catheter 7 required in the operation are: the middle-lower third section of the superior vena cava is close to the junction of the superior vena cava and the right atrium, the preset length is set between 10cm and 60cm, the preset length is confirmed according to the length of the individual blood vessel of the patient, the operation is convenient, the times of switching the inside and the outside of the body of the electrocardiograph monitor 2 are reduced, because when the patient is a child, the wound of the vein puncture is probably 18cm to the appointed depth, the central venous catheter 7 is deeply inserted into the vein to the depth of 10 or 15cm in advance, then the lead switching device 3 is switched, the electrocardiograph monitor 2 is connected with the positioning guide wire 71, the internal examination parameters are displayed, whether the position of the central venous catheter 7 is proper is determined, if the length is not judged and set in advance, the central venous catheter can be inserted into the blood vessel at an extremely slow speed all the time, for example, the patient is a longer adult, and if the length is not set in advance, after the opening punctures the vein, the central venous catheter 7 needs to be moved a little bit to be slowly placed into the vein of a patient, for example, the opening is formed on the arm during operation, an adult with a longer arm generally reaches a specified position from a wound by about 50cm, so that the operation time is prolonged too long, the puncture wound is exposed for too long, and the operation risk is increased, the method presets the length of the vein, so that the speed of placing the vein into the vein is higher, the final tube placing position is not influenced, the tube placing position precision is ensured, the preset length is different from person to person and is more accurate, the specified depth of the central venous catheter 7 during operation is a recognized depth in medicine, the depth can meet the requirement of quick injection, complications are reduced, and only the depth can subsequent treatment, such as hemodialysis, the specified depth is needed for chemotherapy of sensitive drugs, and the position of the central venous catheter 7 needs to be monitored in real time by the electrocardiograph monitor 2 just because the depth is difficult to control in the operation, so that the purpose of the operation is achieved, and the treatment safety of a patient is guaranteed.

One specific application of the embodiment is as follows: when the device is used, a B ultrasonic instrument 11 and an ECG monitor 2 are normally electrified and started, then a connecting pipe of a B ultrasonic probe 1 and a guide wire lead wire 6 are wound together through a winding pipe 41 to ensure tight winding, the sticking position of a body surface ECG electrode plate 21 has special provisions in clinical medical equipment and operation requirements and cannot be randomly adjusted and changed, the position of the body surface ECG electrode plate 21 of the device needs to meet the requirements of the ECG monitor 2 and a central venous catheter catheterization operation, one electrode plate is stuck to each limb of a patient, the body surface ECG electrode plate 21 of the device is stuck to the right upper limb, as shown in figure 1, the sticking of the body surface ECG electrode plate 21 needs to meet the sticking requirements of an electrocardiogram, the other three body surface loop electrode plates 22 are connected with the ECG monitor 2 by using connecting wires, and then the body surface electrode plate 21 of the right upper limb is connected with an external ECG lead wire 5 through an alligator clip, as shown in fig. 1, the lead switching device 3 is connected with the external electrocardiographic lead wire 5, the lead switching device 3 is provided with a sliding switch which can be switched between two working positions, the switch can be only in the working position connected with the external electrocardiographic lead wire 5 or the working position connected with the lead wire 6, so that one of the external electrocardiographic lead wire 5 or the lead wire 6 can be switched to be connected with the electrocardiograph monitor 2; then operating medical staff for sterilization, laying a conventional sterilization laying sheet on an operation part, then carrying out large-range sterile sterilization treatment on the position of a patient needing to be punctured, wearing sterile gloves by the medical staff for operation, then sleeving a wound B-ultrasonic probe 1, a connecting pipe of the B-ultrasonic probe, a guide wire lead wire 6 and a lead switching device 3 into a sterile sleeve 4, wherein the medical staff is not in contact with the B-ultrasonic probe 1, the sterile sleeve 4 is sterile inside and outside originally, when in operation, attention needs to be paid to ensure that the outside of the sterile sleeve 4 is in a sterile state to ensure that the sterile standard of medicine is achieved, at the moment, adjusting the switch working position of the lead switching device 3 to ensure that an external electrocardio lead wire 5 is connected with an electrocardio monitor 2 through the lead switching device 3, the electrocardio monitor 2 displays body surface parameters, and then starting to detect the accurate position of a vein through the B-ultrasonic probe on the operation part of the patient, then, a puncture operation is carried out, the central venous catheter 7 connected with the positioning guide wire 71 is inserted into a vein wound together, then the central venous catheter 7 and the positioning guide wire 71 are extended into the vein together, after the fact that blood return occurs in the central venous catheter 7, the guide wire switching device 3 is switched, the guide wire lead wire 6 is connected with the electrocardiogram monitor 2 through the guide wire switching device 3, in the whole operation process, medical staff are in a sterile environment, the guide wire lead wire 6 is connected with the external end of the positioning guide wire 71 through the sterile sleeve 4, the internal end of the positioning guide wire 71 transmits electrocardiosignals to the electrocardiogram monitor 2 through the guide wire lead wire 6, the electrocardiogram monitor 2 displays physiological parameters of the electrocardio signals in vivo, the electrocardio physiological parameters comprise heart rate, blood pressure, pulse and the like, the central venous catheter 7 is continuously pushed in, and the electrocardio lead wire 5 in vitro is switched back to be connected with the electrocardiogram monitor 2 through the guide wire switching device 3 at any time, and the electrocardio physiological parameters comprise heart rate, blood pressure, pulse and the like The state, look over the physiological parameter of body surface electrocardio, the positioning guide wire 71 not only plays a role of positioning, but also plays a role of supporting the central venous catheter 7, the positioning guide wire 71 is made of nickel-titanium alloy, when the central venous catheter 7 needs to be continuously pushed, the guide wire switching device 3 is switched, the guide wire lead wire 6 is connected with the ECG monitor 2, the central venous catheter 7 is pushed into the vein to the middle-lower third section of the superior vena cava close to the junction of the superior vena cava and the right atrium, the position is the specific known medical data and the method known by medical personnel in related fields, the central venous catheter is put into operation, which is a method of putting the catheter into the peripheral veins and putting the tip of the catheter into the lower third section of the superior vena cava, the catheter can meet the requirement of high-pressure injection in 2004 to be used in the United states, the maximum infusion speed can reach 5ml/s, therefore, the central venous catheter 7 needs to be pushed into the venous vessel to the middle-lower third section of the superior vena cava to be close to the junction of the superior vena cava and the right atrium, because the position can avoid discomfort of the heart caused by too deep engine and can not be too shallow, if too shallow, complications are easy to generate, injection extravasation, ascorbic acid and the like, the device ensures the treatment safety of a patient, thus the operation of the operation is completed, the central venous catheter 7 is detained in the venous vessel of the patient to facilitate the subsequent treatment of the patient, then the positioning guide wire 71 is taken out, the guide wire switching device 3 is switched to observe the electrocardio physiological characteristics of the body surface of the patient, the operation method is very simple, the guide wire switching device 3 is operated in a sterile environment, the risk that the venous wound punctured by the patient is infected is greatly reduced, the operation is simple, and the operation difficulty of operation medical personnel is effectively reduced, in the past, the crocodile clip is required to be used repeatedly and then replaced, and then the operation personnel is disinfected, two medical personnel operations are required if not sterilized, one to handle the sterile surgical portion, one to assist in handling the sterile surgical portion, the former method is very complicated, only one medical staff is needed to complete the whole operation, but also ensures that medical staff operating the operation is always in a sterile environment as long as the vein of the patient is punctured, is safer and is not easy to infect, the switching is convenient, the electrocardio physiological parameters inside and outside the body can be switched at any time, the medical staff can conveniently switch and check the body condition of the patient, moreover, the method for checking the position of the central venous catheter 7 extending into the body through the electrocardiograph monitor 2 is the most accurate method at present, the device is worthy of popularization, and the method can help more medical staff and patients.

In the medical field, the sticking positions of the electrocardioelectrode plates in the operation are as follows:

RA position: the right upper limb, namely the position where the body surface electrocardio-electrode plate 21 is connected in the device;

RL position: a right lower limb;

LA position: the left upper limb;

LL position: the left lower limb.

In addition, the sterile sleeve 4 in the device is made of low-density polyethylene, pure polyethylene in Baidu encyclopedia does not contain polar genes, so that the device has good dielectric property, and the molecular weight of the polyethylene does not influence the dielectric property, so that the guide wire lead wire 6 and the positioning guide wire 71 can also accurately pour the electrocardio current in the body onto the electrocardiogram monitor 2 to be displayed through the sterile sleeve 4.

Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.

Claims

1. The utility model provides an aseptic auto-change over device of internal and external electrocardio lead which characterized in that: including B ultrasonic probe (1), ECG monitor (2), wire auto-change over device (3), aseptic cover (4), external ECG line (5), internal seal wire line (6) and central venous catheter (7) of leading, set up location seal wire (71) that can electrically conduct in central venous catheter (7), terminal and the internal end of central venous catheter (7) of location seal wire (71) are in same position, location seal wire (71) and central venous catheter (7) are outside aseptic cover (4), location seal wire (71), central venous catheter (7) and aseptic cover (4) are all placed on aseptic operating table, B ultrasonic probe (1), wire auto-change over device (3), seal wire line (6) and some external ECG line (5) all set up in aseptic cover (4), one of them of seal wire line (6) or external ECG line (5) of leading all passes through wire auto-change over device (3) The electrocardio monitor is electrically connected with the electrocardio monitor (2) in a switching way, the other end of the guide wire lead wire (6) is also detachably connected with the external end of the positioning guide wire (71), and the external electrocardio lead wire (5) is also connected with a body surface electrocardio electrode plate (21);

the guide wire lead wire (6) is clamped with the positioning guide wire (71) through an alligator clip, and the alligator clip connected with the guide wire lead wire (6) is arranged in the sterile sleeve (4);

the central venous catheter (7) and the positioning guide wire (71) are placed on a sterile operating table board, the central venous catheter (7) and the positioning guide wire (71) are not in contact with an external electrocardio-lead wire (5), and one end of the external electrocardio-lead wire (5) is clamped on a body surface electrocardio-electrode slice (21) which is sticky on the right upper limb of a human body through an alligator clip.