Surgery – Respiratory method or device – Means for mixing treating agent with respiratory gas
Reexamination Certificate
1998-09-24
2001-10-09
Dawson, Glenn K. (Department: 3761)
Surgery
Respiratory method or device
Means for mixing treating agent with respiratory gas
C128S203210, C604S058000
Reexamination Certificate
active
06298846
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to an inhaling type medicine administering device, for example, suitable to be used for administering granular medicine into lungs under breathing-in action of a patient.
BACKGROUND TECHNIQUE
In general, as methods for administering medicine to the lungs of an asthma patient or the like, there are a method of injecting liquid medicine, a method of inhaling medicine by using a liquid aerosol sprayer, a method of inhaling fine granular medicine (having a grain size, for example, 5 to 10 &mgr;m) filled in a capsule.
Of these medicine administering methods for the asthma patient, the method of inhaling granular medicine filled in a capsule uses an inhaler which generally includes a body serving as a main body, a suction mouth which is detachably installed to the body and held in the mouth of the patient, a capsule holder which is disposed inside the body and holds a capsule filled with medicine, and an air flow passage whose inflow-side is opened to atmospheric air and whose outflow-side is opened to the above-mentioned suction mouth. Additionally, this inhaler is provided with a perforating tool and the like for forming holes in the capsule held in the capsule holder which holes are in communication with the air flow passage. The capsule holder is formed with pin insertion holes through which the pins of the above-mentioned perforating tool are inserted.
In case of inhaling medicine by using this inhaler, first the suction mouth, the capsule holder and the like are removed, and then the capsule is installed to the capsule holder, as a preparation operation for administering medicine. Thereafter, the capsule holder, the suction mouth and the like are installed to the body, and then the pins of the perforating tool are moved toward the capsule through the pin insertion holes thereby forming holes in the capsule which holes are in communication with the air flow passage.
Next, in order to make a medicine administering operation, the suction mouth is held in a mouth of the patient, and the patient breathes in under this state. By this, medicine inside the capsule can be mixed in air passing through the air flow passage, and therefore the patient can inhale medicine together with air to his or her lungs through the suction mouth.
After completion of the medicine administering operation, the suction mouth, the capsule holder and the like are removed from the body thereby taking out the used capsule from the capsule holder.
By the way, with the above-mentioned conventional inhaling type medicine administering device, the suction mouth and the capsule holder must be taken out of the body whenever the capsule is installed in the capsule holder and whenever the used capsule is taken out. As a result, treatment of the medicine administering device is troublesome during medicine administration, and problematic because there is the fear that the removed parts are lost.
Further, the number of contacts of the patient to the suction mouth and the capsule holder is increased during installation and removal of the capsule, and therefore this is problematic because of being not desirable from a sanitary viewpoint.
There is the possibility of the patient having a coughing fit when the patient inhales medicine. In this case, medicine is unavoidably released outside under the influence of reversely flowing air through the suction mouth, and therefore there is a problem that a predetermined amount of medicine cannot be inhaled.
Additionally, in such a conventional inhaled type medicine administering device, in order to secure a flow passage area between the inside of the capsule and the pin insertion hole, a clearance between the pin insertion hole and the pin of the perforating tool is minimized thereby punching a hole in the capsule under the action of the pin insertion hole and the pin.
As a result, a punched capsule piece unavoidably enters the pin insertion hole, and therefore a cleaning operation for removing this capsule piece is necessary, which is problematic because of being troublesome in treatment.
Additionally, there is the possibility that the capsule piece separated from the capsule is sucked together with medicine by the patient. In this case, the patient unavoidably has a coughing fit upon sucking the capsule piece. This is problematic because medicine cannot be effectively inhaled into the lungs.
Furthermore, since the clearance between the pin insertion hole and the pin is minimized, there are problems in which it is necessary to raise machining precision of respective parts; machining cost for the respective parts are increased; assembly operationability during production is degraded; and production cost is increased.
DISCLOSURE OF THE INVENTION
This invention has been accomplished in view of the above-discussed various problems of the conventional technique. The main object of the present invention is to provide an inhaling type medicine administering device which is simplified in operation of installing a capsule and taking out the capsule after inhaling medicine, thereby improving operationability of the medicine administering device during treatment of the medicine administering device.
Additionally, another object of the present invention is to provide an inhaling type medicine administering device which prevents medicine from being released outside under the influence of reversely flowing air through a suction mouth thereby making it possible to administer a predetermined amount of medicine to the patient.
A further object of the present invention is to provide an inhaling type medicine administering device which can prevent burr produced upon perforation during perforation of a capsule from being separated thereby facilitating treatment of the medicine administering device, while assembly precision between a pin insertion hole and a pin of a perforating tool can be lowered thereby improving productivity of the medicine administering device.
An inhaling type medicine administering device of the present invention comprises: a medicine administering device main body including a bolder accommodating section located at an axial one side of the above-mentioned main body, and a suction mouth located at an axial other side of the above-mentioned main body; a capsule holder which is disposed to be able to axially get in and off of the holder accommodating section of the medicine administering device main body and formed with a capsule holding space between it and the medicine administering device main body, a capsule being to be held in the capsule holding space; an air flow passage having an inflow-side for establishing communication between the above-mentioned capsule holding space and atmospheric air, and an outflow-side for establishing communication between the above-mentioned capsule holding space and the above-mentioned suction mouth in order to supply medicine within the capsule held in the above-mentioned capsule holding space to the side of the above-mentioned suction mouth; and a perforating tool disposed in the above-mentioned medicine administering device main body in order to form a hole in the capsule held in the above-mentioned capsule holding space, the hole being in communication with the air flow passage.
As thus arranged, in case that medicine is inhaled, first the capsule holder is drawn out of the holder accommodating section of the medicine administering device main body, and then the capsule is installed in the capsule holder in this state, as a medicine administration preparation operation. By inserting this capsule holder into the capsule accommodating section, the capsule can be held in the capsule holding space. Additionally, by perforating the capsule with the perforating tool, communication is established between the inside of the capsule and the air flow passage.
Next, in case of carrying out a medicine administration operation, the patient holds the medicine administering device main body in his or her mouth and breathes in under this state. By this, air flows to the inflow-side of the air flow passage, in
Ishizeki Kazunori
Nakamura Shigemi
Ohki Hisatomo
Yanagawa Akira
Yazawa Yoshiyuki
Dawson Glenn K.
Foley & Lardner
Srivastava Virendra K
Unisia Jecs Corporation
LandOfFree
Suction type medicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Suction type medicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suction type medicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2566731