JP4486604B2 - Portable analgesic device - Google Patents

Description

  The present invention relates to an analgesic device that can be attached and carried outside a patient's body.

Conventionally, analgesics and the like have been regularly administered to patients in order to relieve and alleviate the pain of the patients. For this purpose, patients must visit regularly or be hospitalized for a long time.
Regularly injecting a patient with a drug solution such as an analgesic is a heavy physical burden for both the patient and the practitioner. Therefore, an automatic injection device that automatically injects medicinal solution regularly has been developed for hospitalized patients. However, there are problems such as a large and expensive device and considerable restraint on patient behavior. there were.

Conventionally, there has long been a demand for a simple automatic injection device that can be applied to any of inpatients, outpatients, and home patients without restricting patient behavior.
In order to meet this demand, the present applicant has previously proposed a portable analgesic device (International Publication No. 95/27521 (International Application No. PCT / JP94 / 00608)). In order to achieve the above-mentioned object, this portable analgesic device has a chemical solution continuous injector that continuously discharges the chemical solution for a predetermined time, an on-off valve that is connected to the outlet of the injector and blocks outflow of the chemical solution, A three-way connector connected to the outlet of the on-off valve and having a three-way flow path, a flexible reservoir connected to one end of the three-way connector and storing a chemical solution, and connected to the other end of the three-way connector And a pressure one-way valve that opens only when the chemical exceeds a predetermined pressure.

  In this portable analgesic device, a chemical solution continuous infusion device having a predetermined volume and duration is prepared in advance, and a predetermined amount of chemical solution is injected into a predetermined amount of injector according to the patient's symptoms. Thereafter, the on-off valve is opened to transfer the chemical solution into the reservoir for a predetermined long time. During this transfer time, the patient can act freely with the device attached to the body.

  The transfer time of the drug solution from the injector to the reservoir is almost the same as the time during which the effect of the drug solution lasts. When the patient feels pain, the patient compresses the reservoir himself and injects the drug solution in the reservoir into the body through the pressure one-way valve. In preparation for the next pain, the patient can have the syringe refilled by qualified personnel at the hospital or at home.

  This device is very effective depending on the condition of the patient. However, depending on the worsening of the medical condition, the type of the affected part, etc., it may be necessary to inject a predetermined amount of the medical solution into the body during irregular pain in parallel with the regular long-term continuous infusion of the chemical solution.

  In such a case, a chemical solution continuous injector is used in combination with the above-described portable analgesic device. As such a chemical solution continuous injector, there is a chemical solution continuous injector developed by the present applicant (Japanese Patent Publication No. 51-51901 (Japanese Patent No. 1384289)). This injector has a function of connecting an injection part and an outflow part of a chemical solution with a balloon, injecting the chemical solution into the balloon, and discharging the chemical solution from the outflow part for a long time.

  However, when the portable analgesic device and the chemical solution continuous injector are used in combination, two substantially similar chemical solution continuous injectors are attached to the outside of the patient's body. This is complicated for the practitioner and bulky and annoying for the patient.

International Publication No. 95/27521 Pamphlet Japanese Patent Publication No. 51-51901 Japanese Patent Laid-Open No. 5-15590

  An object of the present invention is to attach the liquid outside the patient's body and inject the liquid medicine into the patient's body periodically for a long period of time, and to inject the liquid medicine irregularly into the body as required by the patient's judgment. The object is to obtain a simple and portable analgesic device.

  The portable analgesic device of the present invention temporarily stores a predetermined amount of a chemical solution and then discharges the chemical solution by itself, a first three-way connector connected to an outlet of the chemical solution supply device, and the first three-way connector A chemical solution intermittent injection line connected to one outlet of the connector, a chemical solution continuous injection line connected to the other outlet of the first three-way connector, and a second three-way connector communicating the outflow ports of both lines. .

The chemical solution feeder has a structure in which an injecting portion for a chemical solution is provided at one end of a balloon made of an elastic material, an outflow portion for the chemical solution is provided at the other end, and the balloon is covered with a protective cover.
The chemical liquid intermittent injection line is connected to a first flow rate controller that controls the flow rate of the chemical liquid, an open / close valve that is connected to the first flow rate controller and blocks outflow of the chemical liquid, and an outlet of the open / close valve. A third three-way connector having a three-way flow path, a hollow and flexible reservoir connected to one end of the third three-way connector and storing a chemical solution, and connected to the other end of the third three-way connector It consists of a one-way valve that opens only when the chemical exceeds a predetermined pressure. The chemical solution continuous infusion line is composed of a second flow rate controller that controls the flow rate of the chemical solution.

  In the portable analgesic device of the present invention, first and second flow rate controllers each having a predetermined volume of drug supply device and a predetermined flow rate control function (outflow duration control function) are prepared in advance, and the patient's symptoms In response to this, a predetermined amount of chemical solution is injected into the feeder. Thereafter, the drug solution is injected into the patient's body through the drug solution continuous injection line for a long time. Meanwhile, in the chemical liquid intermittent injection line, the on-off valve is opened to transfer the chemical liquid into the reservoir for a predetermined long time. During this transfer and continuous infusion, the patient is free to act with the device on the body.

  The transfer time of the chemical solution from the supply device to the reservoir is approximately the same as the time for which the effect of the chemical solution lasts in principle. However, when the patient suddenly feels pain, the patient compresses the reservoir and injects the drug solution in the reservoir into the body through the pressure one-way valve. Thereby, temporary pain is relieved.

In preparation for the next sustained analgesia and sudden pain relief, the patient can be refilled by a qualified person at the hospital or home by a qualified person.
Furthermore, the portable analgesic device according to the first aspect of the present invention includes a chemical supply device that temporarily stores a predetermined amount of chemical solution and then discharges the chemical solution by itself, and a first three-way connector connected to an outlet of the chemical solution supply device. The chemical liquid intermittent injection line connected to one outlet of the first three-way connector, the chemical liquid continuous injection line connected to the other outlet of the first three-way connector, and a second communicating with the outlets of the two lines. It consists of a three-way connector. The portable analgesic device according to a first invention is the portable analgesic device according to the first invention, wherein the drug solution feeder is provided with a drug solution injection part at one end of a balloon made of an elastic material and a drug solution outflow part at the other end. It is characterized by having a structure covered with a protective cover. A portable analgesic device according to a third invention is the portable analgesic device according to the first invention, wherein the chemical solution intermittent injection line is connected to the first flow rate controller for controlling the flow rate of the chemical solution, and the first flow rate controller. An on-off valve for blocking outflow, a third three-way connector connected to an outlet of the on-off valve and having a three-way flow path, and a flexibility connected to one end of the third three-way connector to store a chemical solution And a pressure one-way valve that is connected to the other end of the third three-way connector and opens only when the chemical exceeds a predetermined pressure. The portable analgesic device according to a fourth aspect of the present invention is characterized in that, in the first aspect, the medicinal solution continuous infusion line comprises a second inflow controller for controlling the flow rate of the medicinal solution.

An embodiment of the portable analgesic device of the present invention will be described with reference to FIGS.
As shown in FIG. 1 and FIG. 2, the portable analgesic device of the present invention mainly stores a predetermined amount of drug solution once, and then discharges the drug solution by itself, and the outlet 11 of the drug solution supplier 1. The connected first three-way connector 2, the chemical liquid intermittent injection line 3 connected to one outlet 21 of the first three-way connector 2, and the chemical liquid continuous injection line 4 connected to the other outlet 22 of the first three-way connector 2. And a second three-way connector 5 that communicates the outlets 31 and 41 of both lines 3 and 4.
As shown in FIG. 2, the chemical solution feeder 1 has a balloon 14 made of an elastic material, provided with a chemical solution injection part 12 at one end, a chemical solution outlet 13 at the other end, and the balloon 14 covered with a protective cover 16. It has a structure. More specifically, the chemical solution feeder 1 has a chemical solution injection part 12 and a chemical solution outflow part 13 attached to both ends of the cylindrical main body 17, a balloon 14 attached to the outer periphery of the cylindrical main body 17, and the inside of the balloon 14 and the cylindrical main body 11. The interior communicates with the communication hole 15. The cylindrical body 17 may be omitted, and the injection part 12 and the outflow part 13 may be directly connected by the balloon 14.

  The injection part 12 is provided with a check valve 121 to prevent the backflow of the injected drug solution. The balloon 14 is made of an elastic material and can store a predetermined amount of a chemical solution. When the balloon 14 is inflated, a safety cover 16 is attached to prevent an external action.

  As shown in FIG. 2, the chemical liquid intermittent injection line 3 includes a first flow rate controller 32 that controls the flow rate of the chemical liquid, an on-off valve 33 that is connected to the first flow rate controller 32 and blocks the outflow of the chemical liquid, A third three-way connector 34 connected to the outlet of the on-off valve 33 and having a three-way flow path; a flexible reservoir 35 connected to one end of the third three-way connector 34 and storing a chemical solution; The pressure one valve 36 is connected to the other end of the three-way connector 34 and opens only when the chemical solution exceeds a predetermined pressure.

  The on-off valve 33 and the three-way connector 34 are preferably connected by a female luer connector 37, and the male luer connector 6 is preferably connected to the outlet 31 of the pressure one-way valve 5 via the second three-way connector 5. The male luer connector 37 secures a space for facilitating the operation of the on-off valve 33, and the male luer connector facilitates connection of a catheter or the like. Each part may be connected by a vinyl tube or the like as necessary.

The first flow rate controller 32 is provided with a control passage 321 having a fine hole diameter, and controls the outflow time of the chemical solution.
As the on-off valve 33, female luer connector 37, first, second and third three-way connectors 2, 5, 34, and male luer connector 6, conventional commercial products are used.

  The reservoir 35 is made of a durable flexible material (for example, polyethylene, polypropylene, etc.) and is formed into a spherical shape, a cylindrical shape, a bellows shape, or the like. The reservoir 35 is detachably attached to the third three-way connector 34 in case of damage or contamination.

  The pressure one-way valve 36 is preferably a commercially available umbrella valve, for example. This umbrella valve is normally closed and is set to open when the internal pressure exceeds, for example, about 250 mmHg. This set pressure does not operate at the injection pressure (about 100 to 200 mmHg) of the chemical solution from the supply device 1 to the reservoir 35, but the pressure when the reservoir 35 is compressed when the reservoir 35 is filled with the chemical solution (about approx. 350-400 mmHg). As shown in FIG. 2, the chemical liquid continuous injection line 4 includes a second inflow controller 42 that controls the flow rate of the chemical liquid.

  The second flow rate controller 42 is provided with a control passage 421 having a fine hole diameter, and controls the outflow time of the chemical solution. The line 4 may be connected by a suitable vinyl tube 43 or the like in order to make the flow path length with the line 3 substantially coincide.

  Next, the operation of the portable analgesic device of the present invention will be described with reference to FIGS. First, as shown in FIG. 3, the on-off valve 33 is closed, the reservoir 35 is compressed to the maximum, and a chemical solution (for example, physiological saline, glucose, etc.) is injected from the injection part 12 of the chemical solution supply device 1 by a syringe or the like (not shown). Solution, antibiotic solution, sedative, analgesic, hevaline, nitroglycerin solution, etc.). The drug solution is temporarily stored in the balloon 14. The capacity of the supply 1 and the duration of infusion are selected in advance according to the patient's symptoms.

  After preparing as described above, the apparatus is fixed to the patient's body, and the male luer connector 6 and the body are connected via a catheter or the like (not shown). You may perform the above-mentioned chemical | medical solution injection | pouring after fixing this apparatus to a patient's body.

  Next, as shown in FIG. 4, the on-off valve 33 is opened. The chemical solution passes through the outflow portion 13 by the contraction force of the balloon 14, and passes through the first three-way valve 2 in the line 3, the control passage 321 of the first flow rate controller 32, the on-off valve 33, the female luer connector 37, and the second three-way connector 34. Thus, it is gradually stored in the reservoir 35 for a long time (for example, 0.5-10 hours).

  On the other hand, the chemical solution from the supplier 1 is also supplied to the line 4 through the first three-way connector 2. In this line 4, it passes through the control passage 421 of the second flow rate controller 42 and is continuously infused into the patient's body through the second three-way connector 5, the male luer connector 6, and the catheter (not shown).

  Finally, as shown in FIG. 5, a part of the drug solution in the balloon 14 is transferred into the reservoir 35. By operating the on-off valve 33 before the reservoir 35 is filled with the chemical solution, the chemical solution storage amount in the reservoir 35 can be adjusted. However, since the opening / closing valve operation during the transfer of the chemical solution may have to be performed under the strict guidance of a doctor, a lock mechanism (not shown) for making the opening / closing valve 33 inoperable in the middle is not possible. ) May be provided.

  Thereafter, when the patient suddenly starts to feel pain, as shown in FIG. 6, if the patient compresses the reservoir 35 with a finger or the like, the drug solution passes through the third three-way connector 34, the pressure one-way valve 36, and the male luer connector 6. To the outside (in the patient). By repeating the above-described operation, the apparatus can be reused. Of course, it may be discarded after each use.

It is a top view of the portable analgesic device of this invention. It is the longitudinal cross-sectional view seen from the II-II line of FIG. It is operation | movement explanatory drawing when inject | pouring the chemical | medical solution to a chemical | medical solution container. It is operation | movement explanatory drawing of the chemical | medical solution supply to a chemical | medical solution continuous injection line simultaneously with transferring the chemical | medical solution from the injector to the reservoir | reserver of a chemical | medical solution intermittent injection line. It is operation | movement explanatory drawing at the time of completion of chemical | medical solution transfer to the reservoir | reserver of a chemical | medical solution intermittent injection line during the chemical | medical solution supply to a chemical | medical solution continuous injection line. It is operation | movement explanatory drawing when a chemical | medical solution is poured out outside the apparatus when the reservoir | reserver of a chemical | medical solution intermittent injection line is compressed during the chemical | medical solution supply to a chemical | medical solution continuous injection line.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Chemical solution feeder 2 1st three-way connector 3 Chemical solution intermittent injection line 4 Chemical solution continuous injection line 5 Second three-way connector 6 Oslua connector 14 Balloon 12 Chemical solution injection part 13 Chemical solution outflow part 16 Protective cover 17 Cylindrical body 21 One outlet 22 Other Outlet 31 Outlet 32 First flow rate controller 321 Control passage 33 On-off valve 34 Third three-way connector 35 Reservoir 36 Pressure one-way valve 37 Female luer connector 41 Outlet

Claims (6)

Temporarily storing a predetermined amount of the chemical liquid analgesic, then the chemical solution supply unit for discharging the liquid chemical under its own power, the first three-way connector connected to the outlet of the chemical solution supply unit, one of the first three-way connector In a portable analgesic device comprising a drug solution intermittent injection line connected to an outlet, a drug solution continuous injection line connected to the other outlet of the first three-way connector, and a second three-way connector communicating the outlets of both lines. ,
The chemical liquid intermittent injection line is:
A flexible reservoir in a hollow for storing the chemical, expanded only by the pressure of the chemical liquid stored in the reservoir, and the reservoir,
The third is connected to the other end of the three-way connector, the chemical is a pressure one-way valve that opens only when exceeding a predetermined pressure, the pressure one-way valve is closed in the normal state, the said pressure one-way valve only open when the internal pressure of the reservoir-side exceeds the predetermined pressure, the predetermined pressure of the pressure one-way valve will not actuate the pressure one-way valve in the injection pressure of the liquid medicine to the reservoir from the chemical supply unit While those, anda is the pressure one-way valve at low than the pressure at which the reservoir is compressed when the drug solution in the reservoir is filled,
Furthermore, the said chemical | medical solution intermittent injection | pouring line transfers the said chemical | medical solution over a long time of 0.5-10 hours from the said chemical | medical solution supply device in the said reservoir, The portable analgesic apparatus characterized by the above-mentioned .   The portable analgesic device according to claim 1, wherein the one-way pressure valve is an umbrella valve.   The portable analgesic device according to claim 1 or 2, wherein the reservoir is formed into a spherical shape, a cylindrical shape, or a bellows shape. The chemical dispenser, a feature that one end of the balloon made of an elastic material injection portion of the chemical solution is provided, the outlet portion of the drug solution provided at the other end has a structure covering the balloon with a protective cover The portable analgesic device according to any one of claims 1 to 3. The chemical intermittent injection line, a first flow rate controller for controlling the flow rate of the liquid medicine, an opening and closing valve for interrupting the flow of the chemical solution is connected to the first flow controller, connected to the outlet of the on-off valve And a third three-way connector having a three-way flow path,
5. The reservoir according to claim 1, wherein the reservoir is connected to one end of the third three-way connector, and the pressure one-way valve is connected to the other end of the third three-way connector. The described portable analgesic device. The portable analgesic device according to any one of claims 1 to 5, wherein the medicinal solution continuous infusion line includes a second inflow controller that controls a flow rate of the medicinal solution.

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