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Medicinal-solution administration device

A technology for injecting devices and medicaments, which is applied in the direction of drug devices, other medical devices, hypodermic injection devices, etc.

Inactive Publication Date: 2011-02-16
OLYMPUS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem of difficulty in supplementing or changing medicines, etc. is not limited to osmotic pumps and peristaltic pumps, but also occurs in other types of pumps such as electro-osmotic flow pumps.

Method used

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  • Medicinal-solution administration device
  • Medicinal-solution administration device
  • Medicinal-solution administration device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0038] figure 1 It is a diagram showing a state in which the drug injection device according to the first embodiment of the present invention is applied to a living body such as a human body. figure 1 Among them, the drug injection device 1 has a cannula 1b and a drug part 1a. The cannula main body of the cannula 1b is embedded in the living body 3, and the front end of the cannula main body guides the medicine to the treatment object 2, which is an affected part such as cancer. The medicine part 1a is detachable from the base part 25 of the cannula 1b, and delivers the medicine to the cannula 1b. The drug injection device 1 continuously and intensively discharges about several tens of ml of drugs, such as anticancer agents such as fluorouracil (5-FU), to the treatment target 2 such as cancer in the living body 3 for a long period of about one week. .

[0039] figure 2 yes figure 1 An exploded perspective view of the medicine delivery device 1 shown. in addition, imag...

no. 2 Embodiment approach

[0050] Next, the second embodiment of the present invention is used. In the above-mentioned embodiment, only the drug reservoir 10 is detachable, but in the second embodiment, the drug reservoir 10 is integrated with the driving fluid unit 11, and not only the drug but also the driving fluid can be replaced together with the drug. . That is, the driving liquid unit 11 is provided not on the side of the main body driving unit 30 (drive unit), but on the side of the medicine tank 10 . The medicine reservoir 10 and the driving liquid unit 11 formed integrally can be attached to and detached from the driving body unit 30 .

[0051] Figure 5 It is an exploded perspective view of the drug injection device according to the second embodiment of the present invention. in addition, Figure 6 yes Figure 5 A cross-sectional view of the drug delivery device shown. and then, Figure 7 yes Figure 5 An exploded cross-sectional view of the drug delivery device shown. Figure 5 ~ Fi...

no. 3 Embodiment approach

[0055] Next, a third embodiment of the present invention will be described. In the above-mentioned first embodiment, only the medicine tank 10 is detachable. In the second embodiment, the medicine tank 10 and the driving liquid unit 11 are detachable. In this third embodiment, they are separately detachable. A medicine reservoir 10 and a driving fluid part 11 .

[0056] Figure 8 It is an exploded perspective view of the drug injection device according to the third embodiment of the present invention. in addition, Figure 9 yes Figure 8 A cross-sectional view of the drug delivery device shown. and then, Figure 10 yes Figure 8 An exploded cross-sectional view of the drug delivery device shown. Figure 8 ~ Figure 10 In this drug injection device, the drug connection part 32 and the driving liquid connection part 31 shown in the first embodiment are provided on the basis of the structure of the second embodiment, and the drug reservoir 10 is detachable from the driving ...

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PUM

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Abstract

Provided is a medicine administration device for which it is easy to refill or exchange medicine, at a minimum. The medicine administration device is provided with: a medicine reservoir (10) which stores medicine and supplies the medicine to the medicine administration side; and a drive body (30) which pushes the medicine out by variably discharging into the medicine reservoir (10) a drive liquid which pushes out the medicine in the medicine reservoir (10). The medicine reservoir (10), at a minimum, is detachable. Furthermore, a drive liquid part (11) is formed together with the medicine reservoir (10), and the drive liquid and battery in the drive liquid reservoir may be made replaceable. Also, the drive liquid part (11) and the medicine reservoir (10) may be made separately detachable.

Description

technical field [0001] The present invention relates to a drug injection device for directly and continuously administering drugs such as anticancer agents to treatment objects such as affected areas over a long period of time. Background technique [0002] Conventionally, using an osmotic pressure pump (see Non-Patent Document 1), for example, about 10 ml of micromedicine is continuously administered for a long predetermined period of time, about 1 week. [0003] Non-Patent Document 1: Theewes F and Yum SI. Principles of the operation on of generic osmotic pump for the delivery of semisolid or liquid drug formulations. Ann Biomed Eng 1976, 4(4): 343-353 [0004] However, the above-mentioned osmotic pressure pump will leave the drug in the impermeable membrane, and water will permeate from the outside through the semipermeable membrane that surrounds the impermeable membrane to form the pump surface, and the drug will be squeezed out. Therefore, it is difficult to replenish ...

Claims

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Application Information

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IPC IPC(8): A61M5/142A61M37/00
CPCA61M5/14248A61M5/1413A61M2005/14268A61M5/1409
Inventor 外川刚
Owner OLYMPUS CORP