JP6284467B2 - Drug administration device - Google Patents

Description

  The present invention relates to a drug administration device suitable for administering a drug that easily absorbs moisture into a body cavity.

  In recent years, endoscopic surgery for performing surgery by inserting an endoscope or the like into the abdominal cavity has become widespread. At the time of endoscopic surgery, gas such as carbon dioxide is injected into the abdominal cavity to expand the abdominal cavity, thereby securing a space necessary for the treatment in the abdominal cavity. In order to inject gas into the abdominal cavity, a pneumo-abdominal device is used that controls the pressure of a gas from a gas supply source such as a gas cylinder with a decompressor, a valve, or the like to keep the abdominal cavity at a set pressure.

In order to administer a powder medicine into a body cavity in such an endoscopic surgical operation, for example, a device described in Patent Document 1 has been proposed.
The apparatus described in Patent Document 1 introduces an air pump, a medicine container containing powder medicine, air supplied from the air pump to the medicine container, and nozzles the medicine mixed gas after the medicine in the medicine container is disturbed And a passage unit leading to The injection port provided at the tip of the nozzle is inserted into the body cavity through the insertion hole provided in the patient's abdomen, and when the air pump is activated by the operation switch, the mixed medicine gas is obtained in the drug container and the nozzle It is injected from the injection port.

Japanese Patent Application Laid-Open No. 07-155377

On the other hand, in recent years, as a hemostatic agent, a drug composed of powder or flaky material that easily absorbs water and contains hydrocolloid particles such as pectin, gelatin, and carboxymethyl cellulose is sometimes used.
However, since the inside of the body cavity is in a highly moist state, the water in the body cavity flows back into the device, and the inside of the device is also in a highly moist state. Therefore, when a drug that absorbs moisture more than the conventional powder drug as described above is used in the apparatus of Patent Document 1, the drug absorbs moisture in the apparatus, the drug gels, and the injection port is clogged. .

  The present invention has been made paying attention to the above-described problems, and an object of the present invention is to provide a drug administration device capable of preventing clogging of a drug injection port.

  The object of the present invention is a drug administration device for administering a drug into a body cavity, a drug container in which the drug is stored, a drug delivery means for delivering the drug from the drug container, and a jet at the tip A first guide tube having a mouth for guiding the medicine delivered from the medicine container to the ejection port; and a second guide tube for guiding the gas for insufflation delivered from the gas supply source. This is achieved by a drug administration device in which the tip of the second guide tube is connected to the first guide tube so that the gas passage for insufflation is communicated with the drug channel.

  According to the said structure, the gas for insufflation is sent to the 2nd guide tube from the gas supply source which comprises an insufflation apparatus at the time of an endoscopic surgery. The distal end of the second guide tube is connected to the first guide tube, and the gas for pneumoperitone is injected from the second guide tube into the body cavity through the first guide tube. In this state, when the medicine is delivered to the first guide tube by the medicine delivery means at a desired timing, the medicine is ejected from the ejection port of the first guide tube.

Thus, since the gas for insufflation is injected into the body cavity through the second guide tube and the first guide tube, the moisture in the body cavity does not flow backward in the first guide tube, A dry state is always maintained. Therefore, the gelation of the medicine in the first guide tube can be prevented, the medicine does not remain near the injection port of the first guide tube, and the medicine can be prevented from being clogged.
Further, in order to prevent clogging of medicines, a pneumoperitoneum device that is conventionally used at the time of endoscopic surgery is used, and a new device is not required.

  It is preferable that the medicine delivery means includes a rubber air balloon that is manually expanded and contracted to send air, and an air feed pipe that feeds the air sent from the air balloon into the medicine container.

  According to the above-described configuration, the medicine is delivered from the medicine container at a timing desired by the operator and ejected from the ejection port of the first guide tube by a simple operation in which the surgeon manually expands and contracts the air balloon. be able to.

  Furthermore, in a preferred embodiment of the drug administration device having the above-described configuration, each of the first and second guide tubes is held in a cover body, and a front portion of the cover body includes the first guide tube. A deriving part for deriving the ejection port is provided, and the gas supply source is connected to the first connection part for connecting the medicine delivery means to the medicine container and the second guide tube on the rear surface part of the cover body. A second connection part is provided for connection, and a third connection part is provided on the lower surface of the cover body for connecting the drug container to allow the first guide tube to communicate with the drug container. It is characterized by being.

  According to the above configuration, since the first and second guide tubes are held in the cover body, and the medicine discharge means and the medicine container are connected to the cover body, the apparatus is compact and the operator can easily carry it by hand. It can be.

According to the drug administration device of the present invention, the gas for insufflation is injected into the body cavity from the second guide tube through the first guide tube, and the water in the body cavity flows back in the first guide tube. And always kept dry. Therefore, the gelation of the medicine in the first guide tube can be prevented, the medicine does not remain near the injection port of the first guide tube, and the medicine can be prevented from being clogged.
Further, in order to prevent clogging of medicines, a pneumoperitoneum device that is conventionally used at the time of endoscopic surgery is used, and a new device is not required.

It is a disassembled perspective view which shows the internal structure of the chemical | medical agent administration apparatus concerning one Embodiment of this invention. It is a perspective view of a medicine administration device. It is a side view of a medicine administration device. It is sectional drawing of a chemical | medical agent container.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is an exploded perspective view showing an internal configuration of a drug administration device 10 according to an embodiment of the present invention, FIG. 2 is an external perspective view, and FIG. 3 is a side view. In the following description, the left side of FIG. 3 is the front side of the drug administration device 10, the right side is the rear side of the drug administration device 10, the lower side is the lower side of the drug administration device 10, and the upper side is the upper side of the drug administration device 10. The direction orthogonal to the front-rear direction and the up-down direction of the drug administration device 10 is the left-right direction of the drug administration device 10. In other drawings, description will be made based on these.

  The drug administration device 10 is for administering the drug M into the body cavity. The drug container 20 contains the drug M, the drug delivery means 30 for delivering the drug M from the drug container 20, and the injection port 43a at the tip. A first guide tube 40 for guiding the medicine M delivered from the medicine container 20 to the ejection port 43a, and a second for guiding the gas for insufflation delivered from a gas supply source (not shown). And a guide tube 50.

The drug container 20 includes a main body 21 that is a drug bottle and a polypropylene cap 22 that is locked to the main body 21. The main body 21 has a cylindrical shape, and an upper end opening is closed by a cap 22. The medicine M to be accommodated is, for example, a hemostatic medicine, and has an average particle size of 10 μm or more and 3,000 μm or less in the form of powder or flakes. In this embodiment, the medicine container 20 also serves as a handle for hand-operating the medicine administration device 10.
As shown in FIG. 4, one end of the first guide tube 40 passes through the cap 22 of the drug container 20 and is inserted into the drug container 20. One end of an air supply tube 32 (described later) of the medicine delivery means 30 passes through the cap 22 of the medicine container 20 and is inserted into the medicine container 20. One end of the air supply pipe 32 is located in the medicine M and near the bottom surface of the medicine container 20.

  The medicine delivery means 30 includes a rubber air balloon 31 that expands and contracts manually and delivers air, and one end inserted into the medicine container 20 and the other end connected to an end 31a of the air balloon 31. And an air supply pipe 32 for sending the air sent from 31 into the medicine container 20. The air supply bulb 31 is provided with a valve (not shown) for venting air. The air supply pipe 32 has an L shape, and one piece of the L shape and the other piece are connected by a short shaft-like connecting portion 32a. The air supply pipe 32 is made of polycarbonate resin.

  The first guide tube 40 is L-shaped and has one end inserted into the drug container 20, a connection connector 42 connected to the other end of the L-tube 41, and one end of the connection connector 42. It consists of the injection pipe 43 to be connected. The other end (tip) of the injection tube 43 has an injection port 43a, and the injection port 43a passes through the body wall and is inserted into the body cavity. The L-shaped tube 41 is formed of a vinyl chloride resin, and the connection connector 42 and the injection tube 43 are formed of a polycarbonate resin.

  One end of the second guide tube 50 is connected via a port 51 to a gas supply source (not shown) which is an insufflation apparatus. During endoscopic surgery, carbon dioxide, which is an insufflation gas, is supplied to the second guide tube 50 from a gas supply source. The other end (front end) of the second guide tube 50 is connected to a connecting portion 42a branched from the connection connector 42 of the first guide tube 40, and the passage of the medicine M in the first guide tube 40. In addition, the gas passage for the insufflation gas of the second guide tube 50 communicates. The second guide tube 50 is made of silicone, and the port 51 is made of polycarbonate resin.

The first guide tube 40, the second guide tube 50, and the air supply tube 32 are held in the cover body 60. The cover body 60 is formed of a polycarbonate resin.
As shown in FIGS. 2 and 3, a lead-out portion 61 for leading the injection port 43 a of the first guide tube 40 is provided on the front surface portion of the cover body 60, and the drug container 20 is disposed on the rear surface portion of the cover body 60. A first connection portion 62 for connecting the air supply bulb 31 is provided to the air supply tube 32 that communicates, and a second connection portion 63 for connecting a gas supply source to the second guide tube 50 is provided. Yes. Further, a third connection portion 64 is provided on the lower surface of the cover body 60 for connecting the drug container 20 to allow the first guide tube 40 and the air supply tube 32 to communicate with each other in the drug container 20. The cap 22 of the medicine container 20 is fitted into the third connection part 64.

  The cover body 60 includes a pair of halves 65A and 65B that are divided in the left-right direction in FIG. FIG. 1 shows only one half 65A, and the other half 65B is not shown.

Two holding walls 66A and 66B for holding the first guide tube 40 are formed on the inner wall of the halves 65A and 65B in the vicinity of the lead-out portion 61 so as to protrude to the inside of the cover body 60. ing. Each holding wall 66 </ b> A, 66 </ b> B has a recess 66 a for locking the connection connector 42 of the first guide tube 40.
A support groove 61a for supporting the injection pipe 43 of the first guide pipe 40 is formed in the lead-out portion 61 of each half body 65A, 65B.

A holding wall (not shown) having a recess for locking the air supply pipe 32 protrudes to the inside of the cover body 60 on the inner wall in the vicinity of the first connecting portion 62 of each half body 65A, 65B. Is formed. A support groove (not shown) for supporting the end portion 31a of the air supply ball 31 is formed in the first connection portion 62 of each of the halves 65A and 65B.
Alternatively, the end 31a of the air balloon 31 may be covered with silicon rubber, and the silicon rubber may be supported by the support groove. Since the end 31a of the air supply ball 31 and the support groove are in close contact with each other through the silicon rubber, the air supply ball 31 is stably connected to the cover body 60, and the operability is improved.

  A holding wall (not shown) having a recess for locking the second guide tube 50 is formed on the inner side of the cover body 60 on the inner wall in the vicinity of the second connection portion 63 of each half body 65A, 65B. It is formed to protrude. A support groove (not shown) that supports one end of the port 51 connected to the second guide tube 50 is formed in the second connection portion 63 of each of the halves 65A and 65B. The other end side of the port 51 protrudes outward from the cover body 60.

  A recess 66c for locking the L-shaped tube 41 of the first guide tube 40 and an air supply tube 32 are locked to the inner wall in the vicinity of the third connecting portion 64 of each half body 65A, 65B. A holding wall 66 </ b> C having a recess 66 d is formed so as to protrude inside the cover body 60. A concave groove 64a for fitting the cap 22 of the medicine container 20 is formed in the third connecting portion 64, and the cap 22 fitted into the opening edge of the concave groove 64a is prevented from falling off. A protrusion-proofing edge 64b is formed.

Each half-split body 65A, 65B is formed with a cylindrical shaft support hole 67 for supporting the connecting portion 32a of the air supply pipe 32 from both sides.
Further, a plurality of connecting cylinders 68a are formed on the inner wall of one half body 65A, and a connecting shaft (not shown) is fitted to the connecting cylinder 68a at a position corresponding to each connecting cylinder 68a on the inner wall of the other half body 65B. ) Is formed. Further, an engagement pin 68b is formed on the split surface of one half body 65A, and the engagement pin 68b is fitted at a position corresponding to the engagement pin 68b of the split surface of the other half body 65B. A hole (not shown) is formed. By engaging the connecting cylinder 68a with the connecting shaft and the engaging pin 68b with the engaging hole, the pair of halves 65A and 65B are united to form the cover body 60.

The drug administration device 10 of the present invention operates as follows.
At the time of endoscopic surgery, the gas for insufflation is sent from the gas supply source to the second guide tube 50, and the gas for insufflation is injected from the second guide tube 50 through the first guide tube 40. 43a is supplied into the body cavity. In this state, when the surgeon manually expands and contracts the rubber air balloon 31, the air sent from the air balloon 31 is sent into the drug container 20 through the air pipe 32. The air is jetted from one end of the air supply pipe 32 positioned near the bottom surface of the medicine container 20, and the medicine M is raised in the medicine container 20. The soaked medicine M is delivered from the medicine container 20 together with the air by the pressure of the air jetted from the air feed pipe 32, and is jetted through the L-shaped pipe 41 of the first guide pipe 40 and the connection connector 42. It is guided to the injection port 43a of the pipe 43 and is injected from the injection port 43a.

At this time, by setting the air injected from the air supply pipe 32 to a predetermined pressure,
The medicine M is guided to the injection port 43a without being clogged by the L-shaped tube 41 of the first guide tube 40.
Further, the medicine M is not only guided to the injection port 43a of the first guide tube 40 by the pressure of the air injected from the air supply tube 32, but also the L-shaped tube of the first guide tube 40 by the gas for insufflation. When 41 or the drug container 20 becomes negative pressure, the drug M is drawn into the connection connector 42.

According to the drug administration device 10 of the present invention, the gas for insufflation is injected into the body cavity from the first guide tube 40, and the moisture in the body cavity does not flow back in the first guide tube 40, A dry state is always maintained. Therefore, the gelation of the medicine in the first guide tube 40 can be prevented, the medicine M does not remain near the injection port 43a of the first guide tube 40, and the medicine M is prevented from being clogged. can do.
Moreover, in order to prevent clogging of the medicine M, an insufflation apparatus conventionally used at the time of endoscopic surgery is used, and a new apparatus is not required.

Further, in the medicine container 20, one end of the air supply tube 32 is positioned near the bottom surface of the medicine container 20, and air is injected from the bottom of the medicine M accommodated, so that the rise of the medicine M can be increased. The medicine M is easily delivered from the medicine container 20. Moreover, even when the amount of the medicine M accommodated in the medicine container 20 is reduced, the medicine M can be surely raised.
Further, when one end of the first guide tube 40 connected to the cap 22 protrudes into the drug container 20, the drug M swollen above the one end of the first guide tube 40 is the first guide tube 40. The drug administration device 10 according to this embodiment is configured so that one end of the first guide tube 40 does not protrude into the drug container 20 without being delivered to the guide tube 40. Thus, the so-called drug M is easily sent out to the first guide tube 40 without staying in the drug container 20.

As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible unless it deviates from the meaning of this invention.
For example, in the present embodiment, the medicine delivery means 30 includes a rubber air balloon 31 and an air feed pipe 32 that feeds air sent from the air balloon 31 into the medicine container 20. Is not limited to this, and various means can be used. For example, a suction pump may be used as the medicine delivery means 30, and the medicine M may be sucked up from the medicine container 20 by the suction pump and sent to the first guide tube 40.

  Moreover, in the cover body 60, each position where the derivation | leading-out part 61, the 1st connection part 62, the 2nd connection part 63, and the 3rd connection part 64 is provided is not restricted to this embodiment, An operator is It can be installed in any position as long as it is easy to use.

  The materials constituting the medicine container 20, the air feeding tube 32, the first guide tube 40, the second guide tube 50, the port 51, and the cover body 60 are not limited to the present embodiment, and any material can be used as long as it does not depart from the spirit. Such material may be used.

DESCRIPTION OF SYMBOLS 10 Drug administration apparatus 20 Drug container 30 Drug delivery means 31 Air supply balloon 32 Air supply pipe 40 1st guide pipe 43a Injecting port 50 2nd guide pipe 60 Cover body 61 Deriving part 62 1st connection part 63 2nd connection part 64 Third connection

Claims (1)

A drug administration device for administering a drug into a body cavity,
A medicine container for containing the medicine;
A medicine delivery means for delivering the medicine from the medicine container;
A first guide tube having a spray port at a tip thereof for guiding the drug delivered from the drug container to the spray port;
A second guide tube for guiding the gas for insufflation delivered from the gas supply source,
The tip of the second guide tube is connected to the first guide tube, and the gastric gas passage is communicated with the drug passage ,
The medicine delivery means includes
A rubber air balloon that expands and contracts manually to send out air;
Drug delivery device Ru and a flue for feeding the air delivered from the feed balloon into the medication container.