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Close type needle of retaining on artery

An indwelling needle and closed technology, which is applied in the field of medical devices, can solve the problems of blood polluting the environment and spreading diseases, it is difficult to ensure aseptic operation, and the amount of flushing affects blood coagulation, etc., so as to prevent blood from polluting the environment and blood-borne diseases, and reduce the number of organs. The incidence of embolism and the effect of ease of use and operation

Inactive Publication Date: 2005-11-16
WEST CHINA HOSPITAL SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This not only increases the workload, but also the whole blood collection process is an open process, which is not only difficult to ensure aseptic operation, but also involves the above-mentioned problems of blood polluting the environment and spreading diseases
The more serious problem is that during the process of connecting and removing the syringe to the three-way switch of the pressure sensor, the connection between the syringe and the three-way switch of the pressure sensor is often easy to bring in air. If the air is not found and discharged in time, the air bubbles will follow Arterial blood enters the circulation causing embolism of vital organs with serious consequences
For pediatric patients, if anticoagulants are used for frequent flushing, the large amount of flushing may affect coagulation to a certain extent

Method used

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  • Close type needle of retaining on artery
  • Close type needle of retaining on artery
  • Close type needle of retaining on artery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] use figure 2The closed arterial indwelling needle shown is taken as an example by the direct puncture method. The direct puncture method refers to the process in which the arterial indwelling needle penetrates the skin, subcutaneous tissue and arterial vessel wall layer by layer and enters the arterial vessel. Before puncturing, remove the heparin cap 7 at the tail end of the side hole tube 9 for backup, connect the joint of the pressure sensor 12 extension tube 13 to the tail end of the side hole tube, and place the handle switch 10 in a direction parallel to the side hole tube, that is, "ON" state, fill the extension tube 13 of the pressure sensor 12 and the arterial indwelling needle with anticoagulant. Then palpate the arterial pulse, select the skin puncture point, insert the arterial indwelling needle at an angle of 30 degrees to the horizontal plane, and slowly penetrate the skin, subcutaneous tissue and arterial vessel wall layer by layer. Blood return can be ...

Embodiment 2

[0034] use figure 2 The enclosed arterial indwelling needle shown is taken as an example by indirect puncture. Indirect puncture means that the arterial indwelling needle penetrates the skin, subcutaneous tissue and the two-layer vessel wall of the arterial vessel layer by layer, and then returns the arterial indwelling needle into the arterial vessel the process of. The preparation work is the same as in Example 1, and then palpate the arterial pulse, select the skin puncture point, insert the arterial indwelling needle at an angle of 30 degrees to the horizontal plane, penetrate the skin, subcutaneous tissue and the two-layer blood vessel wall of the arterial vessel layer by layer, and then take it out Steel needle core 1, slowly withdraw the trocar 2 into the arterial blood vessel, when it is observed that there is blood rushing from the side hole tube 9 to the pressure sensor extension tube 13 connected with the side hole tube, stop withdrawing the trocar, and put it prop...

Embodiment 3

[0036] use Figure 5 The schematic diagram of the blood collection structure after puncture is shown. Taking arterial blood sample collection as an example, a conventional syringe is connected to the three-way switch on the pressure sensor 12 extension tube 13 before blood collection, and then the anticoagulant in the pressure sensor extension tube is withdrawn to make the artery The blood flows into the extension tube of the pressure sensor from the side hole tube 9, at least to ensure that the arterial indwelling needle before the handle switch 10 is arterial blood without anticoagulant, and the handle switch is placed in the vertical direction with the side hole tube, that is, "off" In the state, sterilize the tail end of the heparin cap, use a conventional syringe 14 with a needle to pass through the heparin cap 7 and the elastic blocking member 8, and reach the main hole tube 4 in front of the elastic blocking member to draw blood back. After blood collection, take out th...

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Abstract

A sealed indwelling needle for arteriopuncture and taking blood is composed of a hollow steel needle, a sleeve-tube needle, a main tube with a blocking member in its middle position, a lateral tube with a manual valve, a transparent plastic tube, a blocking tube and the heparin cap on the ends of said main tube and lateral tube. Its advantages are no blood pollution and disease infection and high sealing effect.

Description

1. Technical field [0001] The invention relates to a medical instrument, in particular to a closed arterial indwelling needle for puncturing and collecting arterial blood after continuous invasive arterial blood pressure monitoring. 2. Background technology [0002] Continuous invasive arterial blood pressure monitoring is one of the commonly used monitoring methods in the perioperative period of major surgery and in patients with unstable circulation. Continuous invasive arterial blood pressure monitoring is accomplished by a monitoring system consisting of an indwelling needle placed in the artery, a pressure sensor connected to the indwelling needle, and a monitor. Its basic principle is to convert the pressure signal of blood against the vessel wall into a pulse signal that can be recognized by the monitor through the pressure sensor, and timely and accurately reflect the patient's arterial pressure and waveform, which is helpful for guiding clinical diagnosis and treatm...

Claims

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Application Information

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IPC IPC(8): A61B5/15
Inventor 罗林丽王健周良学阮履强
Owner WEST CHINA HOSPITAL SICHUAN UNIV
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