WO2000071190A1

WO2000071190A1 - Portable pain relieving device

Info

Publication number: WO2000071190A1
Application number: PCT/JP1999/002699
Authority: WO
Inventors: Osamu Tsukada; Yasuhiko Nakajima
Original assignee: Tsukada Medical Research Co., Ltd.
Priority date: 1999-05-24
Filing date: 1999-05-24
Publication date: 2000-11-30

Abstract

A portable pain relieving device comprising a liquid medicine continuous injector (1) for continuously allowing a liquid medicine to flow out for a preset time via the control passage (131) of an outflow unit (13), a 3-way connector (2) having three-direction flow passages and detachably connected at one end (21) to the outlet of the injector (1), a reservoir (4) detachably connected to the intermediate end (22) of the 3-way connector (2) via a flexible tube (3) and having a flexible, expandable balloon (44) which is normally contracted and expands as another liquid medicine is filled to store the liquid medicine, an open/close clamp (5) attached to the flexible tube (3) and adapted to open or close the flexible tube (3) so as to admit or cut off the flow of the medicine from the reservoir (4) and an on/off valve (6) connected detachably to the other end (23) of the 3-way connector (2) and adapted to admit or cut off the flow of the liquid medicine.

Description

Specification

Portable analgesic device

[Technical field]

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

[Background technology]

In the past, analgesics were regularly administered to patients in order to relieve and alleviate their pain. To do this, patients have to go to the hospital regularly or for long periods of hospitalization.

Injecting a drug such as an analgesic into a patient on a regular basis puts a great physical burden on the patient and the practitioner. To address this, automatic injection devices have been developed that automatically and automatically inject medical solutions into inpatients.However, such devices have become larger and more expensive, and have considerable constraints on patient behavior. was there. Therefore, there has been a long-felt need for a simple automatic injection device that can be applied to patients who are hospitalized or out of hospital without being bound by their behavior.

In order to respond to this request, the present applicant has previously proposed a portable analgesic device (international application number PCTZJP94 / 06608: international publication number W〇95Z275221). This portable analgesic device has a drug solution continuous injector for discharging a drug solution for a predetermined time through a control passage of an outflow portion, and is detachably connected to an outlet of the injector to block the drug solution from flowing out. An on-off valve, a three-way connector connected to an outlet of the on-off valve and having a three-way flow path, detachably connected to one end of the three-way connector, and contracted in a normal state, A flexible telescoping reservoir that expands and stores a drug solution as the drug solution flows in from the container, and a reservoir that is connected to the other end of the three-way connector and is pressed by the reservoir so that the drug solution in the reservoir is in a predetermined position. The valve is opened only when the pressure exceeds the pressure, and is made up of a one-way valve for discharging the chemical solution in the reservoir.

In this portable analgesic device, a medicinal solution continuous infusion device having a predetermined capacity and duration is prepared in advance, and a predetermined amount (3-5 cc) of the predetermined medicinal solution is filled into the infusion device according to the patient's symptoms. After that, open the on-off valve and transfer the chemical solution into the reservoir for a predetermined long time (about 0.5 to 10 hours). During this transfer time, the patient is free to move with the device on his body. The transfer time from the injector to the reservoir is Is almost the same as the duration of the effect. When the patient feels pain, the patient compresses the reservoir and injects the medicinal solution in the reservoir into the body through a pressure one-way valve. However, in this portable analgesic wear, the pressure and time required to press the reservoir are about 350 to 400 mm Hg and about 20 to 200 seconds, Exhausted patients can require great effort. Also, when the patient interrupts the compression of the reservoir on the way, doctors and the like may not be able to accurately know the amount of drug solution injected from the reservoir, which may make administration of the drug solution difficult.

[Disclosure of the Invention]

An object of the present invention is to provide a simple and portable analgesic device that can be externally attached to a patient and immediately injects a drug solution into a patient's body without needing extra physical strength when the patient feels pain. It is in.

The portable analgesic device of the present invention has a drug solution continuous injector for allowing a drug solution to flow out through a control passage of an outflow portion for a predetermined time, and a three-way flow path, one end of which is attached to an outlet of the injector. Removably connected three-way connector and detachably connected to the middle end of the three-way connector by using a flexible tube, which contracts during normal conditions, and another chemical solution is injected A reservoir having a flexible, expandable and contractible balloon that expands and stores the drug solution, and a flexible tube attached to the flexible tube to open and block the outflow of the drug solution from the reservoir. It consists of an open / close clamp that opens and closes, and an open / close valve that is detachably connected to the other end of the three-way connector to open and close the outflow of chemicals.

In the portable analgesic device of the present invention, a continuous drug injector having a predetermined capacity and duration and a reservoir having a predetermined capacity are prepared in advance, and the on-off valve and the clamp are closed. Fill the syringe with a prescribed volume of the prescribed drug solution according to the symptoms of, and fill the reservoir with the prescribed volume of the drug solution in an emergency. After that, open the on-off valve and perform normal continuous infusion of the drug solution. During this time, the patient can move freely while wearing the device. If pain strikes the patient during this continuous infusion, the patient can immediately open the clamp and inject the emergency fluid from the reservoir into the body to relieve the pain.

In preparation for the next pain, the patient may be The reservoir can be replenished with a new emergency drug solution.

[Brief description of drawings]

FIG. 1 is a plan view of a portable analgesic device of the present invention.

FIG. 2 is a longitudinal sectional view taken along line II-II of FIG.

FIG. 3 is an explanatory diagram of the operation when the chemical liquid is being filled into the continuous chemical liquid injector. FIG. 4 is an explanatory view of the operation when the reservoir is filled with the chemical solution.

FIG. 5 is an explanatory diagram of the operation when the chemical solution flows out of the device from the continuous chemical solution injector.

FIG. 6 is an explanatory view of the operation when the chemical is discharged from the continuous chemical injector and the reservoir to the outside of the device.

7A and 7B are plan views of the clamp used in the present invention. FIG. 7A shows a state in which the tube is opened, and FIG. 7B shows a state in which the tube is closed. Shown.

8A and 8B are plan views of another clamp used in the present invention, wherein FIG. 8A shows a state in which the tube is opened, and FIG. 8B shows a state in which the tube is closed. .

FIGS. 9A and 9B are side views of still another clamp used in the present invention. FIG. 9A shows a state in which the tube is opened, and FIG. 9B shows a state in which the tube is closed. Shown respectively.

[Best Mode for Carrying Out the Invention]

An embodiment of a portable analgesic device of the present invention will be described with reference to FIGS.

As shown in FIGS. 1 and 2, the portable analgesic device of the present invention is mainly composed of a drug solution continuous infusion device 1 which continuously discharges a drug solution for a predetermined time through a control passage 13 of an outflow portion 13. A three-way connector 2 having a three-way flow path, one end 21 of which is detachably connected to the outlet of the injector 1, and a flexible tube 3 at an intermediate end 22 of the three-way connector 2. It is detachably connected and contracts at the normal state, and expands and stores a drug solution when another drug solution is injected. Attached to the flexible tube 3, the outflow of the drug solution from the reservoir 4 Opening / closing clamp 5 for opening / closing flexible tube 3 for opening / closing, and opening / closing valve 6 that is detachably connected to the other end 23 of the three-way connector 2 to open / cut off the outflow of chemical solution 6 Consists of

It is preferable that the outlet 13 of the chemical liquid continuous injector 1 and one end 21 of the three-way connector 2 are connected by a female connector 7, and an outlet of the on-off valve 6 is connected to an female connector 8. The female connector 7 secures a space for facilitating the operation of the clamp 5, and the female connector 8 facilitates connection of a force catheter or the like that connects to a patient's body.

As the continuous liquid injector 1, there is a continuous liquid injector developed by the present applicant (Japanese Patent No. 138482-9). This injector has a function of connecting a filling portion and an outflow portion of a chemical solution with a balloon, injecting the chemical solution into the balloon, and flowing out the chemical solution from the outflow portion for a long time.

As shown in FIG. 2, the chemical liquid continuous injector 1 has a chemical liquid filling portion 12 and a chemical liquid outflow portion 13 attached to both ends of a cylindrical main body 11 and a balloon 14 attached to an outer periphery of the cylindrical main body 11. The inside of the balloon 14 and the inside of the cylindrical body 11 are connected by a communication hole 15. The cylindrical body 11 may be omitted, and the filling section 12 and the outflow section 13 may be directly connected by the valve 14.

The filling part 12 is provided with a check valve 121 to prevent backflow of the injection liquid. The balloon 14 is made of an elastic material and can store a predetermined amount of a drug solution. The outflow section 13 is provided with a control passage 131, which controls the outflow time (0.5 to 10 hours) of the chemical solution.

When the balloon 14 is inflated, a safety cover 16 is attached to prevent external action.

For the female connector 7, female connector * connector 8, three-way connector 2, on-off valve 6 and clamp 5, conventional commercial products can be used.

The reservoir 4 can have a structure almost similar to that of the continuous drug injector 1. That is, as shown in FIG. 2, the reservoir 4 has a chemical solution filling portion 42 and a chemical solution outflow portion 43 attached to both ends of the cylindrical body 41, and a balloon 44 attached to the outer periphery of the cylindrical body 41. A structure in which the inside of the balloon 44 and the inside of the cylindrical body 41 are connected by a communication hole 45 It has become. The cylindrical portion 41 may be omitted, and the filling portion 42 and the outflow portion 43 may be directly connected by the balloon 44. It is not necessary to provide a control passage 13 1 in the chemical outflow portion 4 3 of the reservoir 4 as in the chemical outflow portion 13 of the continuous chemical infusion device 1.

The filling section 42 is provided with a check valve 4 21 to prevent backflow of the injection liquid. The balloon 44 is made of an elastic material and can hold a predetermined amount (3-5 c c) of the drug solution. The set pressure in the balloon 44 is about 300-45 OmmHg, and the chemical inside is discharged in about 20-60 seconds. When the balloon 44 is inflated, a safety cover 46 is attached to prevent external action.

The medicinal solution to be filled in the reservoir 4 is preferably the same as the medicinal solution to be filled for sudden pain.

The chemical liquid injector 1 and the reservoir 4 are detachably attached to the three-way connector 3. This is due to changes in the capacity of the injector 1 and the reservoir 4, breakage, discard, replacement, cleaning, etc.

Conventional clamps 5 can be used, and typical examples are shown in Figs. Fig. 7 shows the slide clamp 5, Fig. 8 shows the pinch clamp 5, and Fig. 9 shows the one-way valve clamp 5. 7, 8, and 9, (A) shows a state in which the clamp 5 opens the flexible tube 3, and (B) shows a state in which the clamp 5 closes the flexible tube 3. Are shown. All clamps 5 can be easily opened and closed with one touch.

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 6 and the clamp 5 are closed (FIGS. 7, 8, and 9 (B)), and a syringe and the like (not shown) from the chemical filling section 12 of the chemical continuous injector 1. A predetermined amount of a drug solution (for example, physiological saline, glucose solution, antibiotic solution, sedative solvent, analgesic solvent, heparin, nitroglycerin solution, etc.) is filled according to (1). The drug solution is temporarily stored in the balloon 14. Next, as shown in FIG. 4, a predetermined amount of another drug solution for pain is filled from the drug solution filling section 42 of the reservoir 4 with a syringe or the like (not shown).

The volume and duration of the continuous drug injector 1 and the volume of the reservoir 4 Select in advance according to the patient's symptoms.

After preparing as described above, this device is fixed to the patient's body, and the catheter connector (not shown) is used to connect the female connector 6 to the body. The above-described drug solution injection may be performed after the device is fixed to the patient's body.

Next, as shown in FIG. 5, the on-off valve 6 is opened, and normal continuous infusion of the drug solution (about 0.5 to 10 hours) is performed. During this time, the patient can move freely while wearing the device. If pain suddenly hits the patient during the continuous infusion of the drug solution, the patient immediately opens the clamp 5 as shown in Fig. 6 (Figs. 7, 8 and 9 (A)). The drug solution for emergency pain stored in the reservoir 4 can be injected into the body using a catheter to relieve the pain.

Reservoir can be replenished with new emergency medication in hospital or at home by a qualified person in preparation for the next pain

However, the above-mentioned continuous infusion of the drug solution may have to be performed under the strict guidance of a physician, so a lock mechanism (not shown) for temporarily disabling the operation of the on-off valve 6 is provided. It may be provided.

This device can be reused by repeating the above operation, but it may be thrown away after each use.

ADVANTAGE OF THE INVENTION According to this invention, since the medical solution of a reservoir is completely discharged only by a patient's simple operation of a clamp, a medical solution management becomes easy, an overdose of a medical solution can be prevented, and the patient side is also safe. Can be used with your heart. Furthermore, the drug solution stored in the reservoir is not restricted by the type and concentration of the drug solution stored in the continuous drug solution injector, and another drug solution with high immediate effect can be used.

[Industrial applicability]

The portable analgesic wear of the present invention can be applied to not only ordinary disease treatment and terminal care but also emergency treatment. It can be applied not only to analgesia but also to sedation, detoxification, antipyretics, and nutritional supplementation.

Claims

The scope of the claims

1. It has a chemical liquid injector (1) that discharges the chemical liquid through the control passage (1 3 1) of the outflow section (1 3) for a predetermined time, and has a three-way flow path. 2) a three-way connector (2) detachably connected to the outlet of the injector (1), and a flexible tube (3) at the middle end (22) of the three-way connector (2). The reservoir (4) has a flexible, expandable and retractable balloon (44) that is detachably connected and contracts during normal conditions, and expands and stores the drug solution as it is filled with another drug solution. An opening / closing clamp attached to the flexible tube (3) for opening / closing the flexible tube (3) for opening / closing the outflow of the drug solution from the reservoir (4). 5) and .. On-off valve that is detachably connected to the other end (23) of the three-way connector (2) to open / close the outflow of the chemical solution 6) consisting of a portable analgesic system.