Administration instrument for medical use

Abstract

It is intended to provide an administration instrument for medical use whereby a drug solution can be safely injected at a high reliability. Using this instrument, for example, a needle can be prevented from sticking deeper into the skin due to the force applied for pressing an injection button and, at the same time, maintained without shaking to ensure stable administration, thereby relieving physical and mental pains of a patient. Owing to the structure wherein an injection button (3) is pressed from an angle not parallel to the direction along which a needle (4) sticks into the skin, the needle can be prevented from sticking deeper into the skin than the level at the beginning due to the force applied for pressing the injection button, thereby ensuring stable administration.

Description

[0001] This application is a divisional application of the application filed by Matsushita Electric Industry Co., Ltd. on December 13, 2002 with the title of invention "medical drug delivery device" and application number 02824803.1. technical field [0002] The present invention relates to a medical drug delivery (administration) device used when drug solutions such as insulin are administered. Background technique [0003] Conventionally, medical dosing devices are mostly used for administering liquid medicines such as insulin or hormone preparations. In general, the injection needle, syringe body, and injection button of this kind of medical drug delivery device are arranged roughly on a straight line, and the structure is such that the injection button parallel to the injection needle is used to squeeze out the injection liquid of the liquid medicine cartridge built in the syringe body. . Figure 24 , Figure 25 shows two representative conventional examples. [0004] ex...

AI Technical Summary

Problems solved by technology

[0032] One is, if the injection needle is not installed, push the injection button or the administration button, if Figure 33 The leaked medical solution 221a or the reverse flow of the medical solution 221b shown, the medical solution leaks from the front end of the injection button or the injection button in the opposite direction, and the medical solution flows in the opposite direction to the injection button or the injection button, leaks, again, such as Figure 34 As shown, the glass tube containing the liquid medicine may crack 227 due to the pressure generated by pushing the injection button or the dosing button, or break and break, causing various problems such as leakage of the liquid medicine to the outside.

[0033] In addition, even in the case of administering by mixing two types of drug solutions, or by dissolving and mixing drugs and drug solutions, as in somatotropin, it is necessary to mix after attaching the injection needle, so if you forget to attach the injection needle , not only cannot be mixed, as mentioned above, there will also be problems such as backflow and leakage of the liquid medicine, or cracks and ruptures in the glass tube of the liquid medicine cartridge

Many of the above problems mostly occur in situations where the patient self-administers the drug

[0034] Additionally, if Figure 24 As far as the medical dosing device shown in Fig. 27 is concerned, although the possibility of accidents is lower when doctors or nurses administer medicines, when patients administer medicines by themselves, they are often unaware of the necessary cleaning of the syringes before administering medicines. Exhaust operation, it is possible to forget to exhaust

In addition, if you forget to exhaust, it may have a great impact on the human body depending on the person, causing the risk of life-threatening

[0035] in addition, Figure 26 With the existing medical dosing device shown in Figure 27, although the electronic display device can display the amount of injection liquid for administration, the amount of injection liquid and the date during the exhaust operation that must be carried out before the administration are also recorded in the memory. 422, not only the capacity of the memory 422 is reduced mischievously, but also the injection volume during the exhaust operation is displayed in the same way as the original injection volume, so the doctor confirms the diagnosis result of the person (patient) and the past Misjudgment may be made in the case of administration history and determination of future treatment methods

If the doctor makes such a wrong judgment, it may have a great impact on the human body of the drug user (patient) and cause a life-threatening risk.

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