JP7320140B2 - Medicine ejection device - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a medicine ejection device suitable for ejecting powdery medicine.

In recent medical practice, for example, powdered medicine is sprayed onto the surgical site for the purpose of hemostasis during laparotomy or laparoscopic surgery. In addition, the use of a powdered drug can provide biological effects such as prevention of perforation in the affected area, reduction of the probability of restenosis, and treatment of cancerous tumors. There is known a drug ejecting device that ejects a powdered drug toward an affected area with compressed air or the like (Patent Documents 1 and 2).

Japanese Patent Publication No. 2007-529280 Japanese Patent Publication No. 2016-538895

The drug ejecting device of Patent Documents 1 and 2 is configured such that compressed air is supplied from the supply passage toward the powdery drug in the filling section, thereby diffusing the drug and ejecting the drug together with the air from the ejection passage. there is

In this case, if the pressure of the air blown onto the drug in the filling section is low or the flow rate is low, the solidified drug may not diffuse sufficiently and be sprayed onto the affected area, resulting in an unstable concentration of the drug in the air. There's a problem. Therefore, it is conceivable to reduce the amount of the drug in the filling portion so that the drug can be diffused even with a small amount of air. However, in this case, there is a possibility that sufficient efficacy may not be exhibited due to the small amount of the drug.

On the other hand, it is conceivable to increase the pressure and flow rate of the air blown onto the medicine so that the medicine in the filling portion is sufficiently diffused. However, the medicine and air are sprayed to the affected area with more force than necessary.

Therefore, when the drug is sprayed onto the affected area, the operation technique of the person who operates the drug ejecting device is relied upon.

An object of one embodiment of the present invention is to provide a medicine ejecting device that can stably supply a powdered medicine toward an affected area without relying on manipulation techniques.

A medicine ejecting device according to an embodiment of the present invention includes a filling part that extends vertically and is filled with a powdery medicine, and an air opening that opens toward the inside of the filling part and supplies air to the inside of the filling part. a supply passage, a medicine discharge passage that extends in the lateral direction above the filling section and is open to discharge the medicine together with the air supplied from the air supply passage to the filling section; a flowing portion that consists of a space extending upward from the inlet portion and that flows and diffuses the drug that has been rolled up in the filling portion ; and the air supply passage extends in the lateral direction of the filling portion. a radial passage portion; and an extension portion extending downward from the radial passage portion within the filling portion, and a downward passage opening downward is formed inside the extension portion. characterized by
Further, the medicine ejecting device according to one embodiment of the present invention includes a filling part that extends in the vertical direction and is filled with a powdered medicine, and an opening that opens toward the inside of the filling part to supply air to the inside of the filling part. an air supply passageway that extends in the lateral direction above the filling portion and opens to discharge the medicine together with the air supplied from the air supply passageway to the filling portion; and the medicine discharge passageway. a flowing portion that consists of a space that extends upward from the inlet portion of the passageway and that causes the drug that has been rolled up in the filling portion to flow and diffuse; It has a diffusing portion consisting of a medicine ejection passage and the flow portion, and the filling portion moves in the lateral direction of the filling portion with respect to the diffusing portion, thereby separating the air supply passage, the medicine ejection passage and the outside. and a discharge position in communication with the air supply passage and the medicine discharge passage.

ADVANTAGE OF THE INVENTION According to one Embodiment of this invention, a powdery medicine can be stably supplied toward an affected part, without relying on operation skill.

1 is a cross-sectional view showing a medicine ejection device according to a first embodiment of the present invention; FIG. FIG. 2 is a cross-sectional view showing a connecting tube portion, an air supply passage, and a medicine ejection passage in FIG. 1; FIG. 2 is a bottom view showing a connecting tube portion, an air supply passage, and a medicine discharge passage shown in FIG. 1; FIG. 10 is a cross-sectional view showing a connecting tube portion, an air supply passage, and a medicine ejection passage according to a second embodiment of the present invention; FIG. 5 is a bottom view showing the connecting cylinder portion, the air supply passage, and the medicine discharge passage of FIG. 4; FIG. 10 is a cross-sectional view showing a medicine ejection device according to a third embodiment of the present invention; FIG. 11 is a perspective view showing a medicine ejection device according to a fourth embodiment of the invention; FIG. 4 is a cross-sectional view showing the medicine ejection device in which the filling section is arranged at the sealing position; FIG. 4 is a cross-sectional view showing the medicine ejection device in which the filling section is arranged at the ejection position; FIG. 10 is a cross-sectional view showing the medicine ejecting device in a state in which the filling section is arranged at the ejecting position, taken in the direction of arrows XX in FIG. 9; FIG. 4 is a bottom view showing the medicine ejection device in which the filling section is arranged at the sealing position; FIG. 4 is a bottom view showing the medicine ejection device in which the filling section is arranged at the ejection position; FIG. 11 is a perspective view showing a medicine ejection device according to a fifth embodiment of the invention; FIG. 17 is a cross-sectional view showing the medicine ejecting device in a state in which the filling section is arranged at the sealing position, taken in the direction of arrows XIV-XIV in FIG. 16; FIG. 18 is a cross-sectional view showing the drug ejecting device in a state where the filling section is arranged at the ejecting position, taken in the direction of arrows XV-XV in FIG. 17; FIG. 4 is a bottom view showing the medicine ejection device in which the filling section is arranged at the sealing position; FIG. 4 is a bottom view showing the medicine ejection device in which the filling section is arranged at the ejection position;

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, pharmaceutical ejection devices according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a first embodiment of the invention. In FIG. 1, a medicine ejecting device 1 according to the present embodiment uses compressed air to spray a powdered medicine 3 onto an affected area in order to stop bleeding when, for example, laparotomy, laparoscopic surgery, or the like is performed. is. The drug ejection device 1 includes a filling section 2, an air supply passage 5, a drug ejection passage 8, and a flow section 9, which will be described later.

Here, the medicine ejecting device 1 is formed, for example, partially or wholly using a permeable resin material. In this case, the filling amount (remaining amount) of the medicine 3, which will be described later, and the presence or absence of problems such as clogging can be checked from the outside.

The filling part 2 is provided as a cylindrical container extending in the vertical direction. Specifically, the filling part 2 is formed as an elongated cylindrical container with an open top and a closed bottom. A filling chamber 2</b>A is formed in the filling part 2 to be filled with the powdery drug 3 . The filling section 2 also has a concave spherical bottom surface 2B at the bottom of the filling chamber 2A. Further, a threaded portion 2C is formed on the outer peripheral side of the upper portion of the filling portion 2. As shown in FIG. This threaded portion 2C is screwed onto a lower threaded portion 4A of a connecting tube portion 4, which will be described later.

The connecting tube portion 4 is provided between the filling portion 2 and a flow portion 9 which will be described later. The air supply passage 5 and the medicine ejection passage 8 are provided as the same component in the connecting cylinder portion 4 . The connecting tube portion 4 is formed as a cylindrical body having a larger diameter than the upper portion of the filling portion 2 and the lower portion of the flow portion 9 . On the inner peripheral side of the connecting tube portion 4, a lower threaded portion 4A to which the threaded portion 2C of the filling portion 2 is screwed is located on the lower side, and a threaded portion 9C of the flow portion 9 is threadedly located on the upper side. An upper threaded portion 4B is provided.

The air supply passage 5 and the medicine ejection passage 8 are arranged in the connecting tube portion 4 at positions facing each other in the radial direction, specifically, at positions shifted by 180 degrees in the circumferential direction of the connecting tube portion 4 . As a result, the air supply passage 5 and the medicine discharge passage 8 do not overlap in the vertical direction, so that the vertical dimension (axial dimension) of the connecting tube portion 4 can be kept small.

The air supply passage 5 is provided in the connecting tube portion 4 positioned above the filling portion 2 . The air supply passage 5 is formed (integrally molded) as the same component as the connecting cylinder portion 4 . The air supply passage 5 supplies air to the filling chamber 2</b>A of the filling section 2 . The air supply passage 5 has a radial passage portion 6 extending in a lateral direction of the filling portion 2, that is, a radial direction of the connecting tube portion 4 and opening, and a radial passage portion 6 in the filling chamber 2A inside the filling portion 2. and an extension portion 7 extending downward from the .

The radial passage portion 6 that constitutes the air supply passage 5 has an inward passage 6</b>A that allows air to flow from the outside to the inside in the radial direction of the connecting cylinder portion 4 . The radial passage portion 6 has a cylindrical inlet portion 6B on the upstream side in the air flow direction, and the inlet portion 6B protrudes and opens in the radial direction of the connecting cylinder portion 4 (lateral direction of the filling portion 2). . On the other hand, the connecting portion 6C located downstream of the inward passage 6A opens downward in a direction different from that of the inlet portion 6B, specifically toward the filling chamber 2A, like the outlet portion 7B described later. . As a result, the inward passage 6</b>A is bent downward at the radially extending downstream end of the connecting tube portion 4 . An upper portion of an extension portion 7, which will be described later, is screwed to the connection portion 6C.

The extending portion 7 forming the air supply passage 5 is formed as a cylindrical member extending downward inside the filling portion 2 (filling chamber 2A). The upper portion of the extension portion 7 is fixed to the connection portion 6C of the radial passage portion 6 by means of screwing, adhesion, or the like. A downward passage 7A that opens downward is formed inside the extension portion 7 . A lower portion of the downward passage 7A serves as an outlet portion 7B of the air supply passage 5. As shown in FIG. The outlet portion 7B opens downward in a direction different from that of the inlet portion 6B, specifically, into the filling chamber 2A.

The extending portion 7 is arranged at a position close to the inner peripheral surface of the filling chamber 2A. As a result, the air that has flowed downward from the downward passage 7A can flow upward along the concave spherical bottom surface 2B, as indicated by arrows C and D in FIG.

The extending portion may be integrally formed with the radial passage portion. Further, the extending portion projects radially inwardly from the inner peripheral surface of the filling portion, forms a passage through the projecting portion in the vertical direction, and connects the passage to the radial passage portion. may be configured.

The extending portion 7 has a throttle portion 7C located at an outlet portion 7B of the downward passage 7A on the filling portion 2 side. This throttle portion 7C can increase the flow velocity of the air flowing out toward the filling chamber 2A. As a result, the airflow accelerated by the narrowed portion 7C can effectively agitate (scatter) the medicine 3 even at a small flow rate.

The drug ejection passage 8 is provided in the connecting cylinder portion 4 located above the filling portion 2 together with the radial passage portion 6 of the air supply passage 5 . The drug discharge passage 8 is formed (integrally molded) as the same component as the connecting tube portion 4 . The medicine discharge passage 8 discharges the medicine 3 in the filling chamber 2A of the filling part 2 to the outside together with the air supplied from the air supply passage 5 to the filling part 2 . The drug ejection passage 8 extends in the lateral direction of the filling portion 2, that is, in the radial direction of the connecting tube portion 4 and opens. The inside of the drug discharge passage 8 is an outward passage 8A through which air flows from the radially inner side of the connecting tube portion 4 toward the outer side. As a result, the drug discharge passage 8 has an inlet portion 8B on the filling portion 2 side, which is the upstream side in the air flow direction, and an outlet portion 8C on the downstream side protruding to the outside.

Here, the arrangement relationship between the air supply passage 5 and the medicine discharge passage 8 will be described. As shown in FIG. 3, the axis A of the radial passage portion 6 (inward passage 6A) of the air supply passage 5 and the axis B of the medicine discharge passage 8 (outward passage 8A) are aligned with the circumference of the connecting cylinder portion 4. are aligned in a straight line. On the other hand, as shown in FIG. 2, the axis A of the radial passage portion 6 and the axis B of the medicine discharge passage 8 are arranged at eccentric positions such that the axis A and the axis B are different in the vertical direction (axial direction). ing. Further, the passage area of the medicine discharge passage 8 (outward passage 8A) is set to a larger value (larger opening) than the passage area of the radial passage portion 6 (inward passage 6A).

An inlet portion 6B of the radial passage portion 6 forming the air supply passage 5 is connected to a compressed air supply source such as a compressor, for example. The inlet portion 6B can also be connected to a compressed fluid supply that supplies other gases besides a compressed air supply. Furthermore, a manual pump or the like can be connected to the inlet portion 6B. For example, a pipe member (hose) extending to the affected area is connected to the outlet portion 8C of the medicine ejection passage 8 .

Next, the configuration of the flow section 9 and the flow of the air and the medicine 3 by the flow section 9, which are the features of this embodiment, will be described in detail.

The flow portion 9 is formed of a space extending upward from the inlet portion 8B of the air supply passage 5 and the medicine ejection passage 8 . The flow section 9 is formed as a lidded cylindrical container that is open at the bottom and closed at the top. Inside the flow section 9, a flow chamber 9A is formed in which the powdery medicine 3 that has been picked up by the filling section 2 is flowed and diffused. A ceiling portion 9B of the fluidizing portion 9 is formed as a spherical concave surface above the fluidizing chamber 9A. The ceiling portion 9B may be formed as a concave surface composed of a conical surface or a pyramidal surface other than the spherical surface. Further, a threaded portion 9C is formed on the outer peripheral side of the lower portion of the flow portion 9. As shown in FIG. The threaded portion 9C is screwed onto the upper threaded portion 4B of the connecting tube portion 4. As shown in FIG. The ceiling portion 9B having a concave spherical surface can smoothly flow the drug 3 in the air, which is swirled up in the filling chamber 2A, along the spherical shape as indicated by an arrow E.

The medicine ejection device 1 according to the present embodiment has the configuration as described above. Next, the overall flow of air and the medicine 3 including the function of the flow section 9, which is a characteristic part, will be described.

As indicated by arrow C in FIG. 1, when compressed air is supplied downward from the inward passage 6A of the extension portion 7 of the air supply passage 5, the drug 3 in the filling chamber 2A is pushed by the compressed air. It is rolled up in the D direction. Furthermore, the drug 3 that has been rolled up flows in the direction of arrow E in the flow section 9 . This flow in the direction of arrow E increases the flow distance (diffusion time) of the medicine 3 and enhances the scattering efficiency of the medicine 3 .

As a result, even when part of the medicine 3 is solidified, the solidified medicine 3 can be sufficiently dispersed and atomized. The atomized drug 3 is ejected toward the affected area through the outward passage 8A of the drug ejection passage 8 .

Thus, according to this embodiment, the filling part 2 is provided to extend in the vertical direction and is filled with the powdery medicine 3, and the filling part 2 is opened toward the inside of the filling part 2 to supply air into the filling part 2. an air supply passage 5, a medicine discharge passage 8 extending in the lateral direction above the filling portion 2 and opening to discharge the medicine 3 together with the air supplied from the air supply passage 5 to the filling portion 2; It is provided with a flow section 9 which consists of a space extending upward from the inlet portion 8B of the passage 8 and which causes the drug 3 that is rolled up in the filling section 2 to flow and diffuse.

Therefore, when the pressure of the air blown onto the medicine 3 in the filling part 2 is low, even when the flow rate of the air is small, the medicine 3 swirled up by the filling part 2 is caused to flow continuously by the flow part 9, thereby allowing the medicine 3 to flow. can be diffused. In addition, the solidified drug 3 can also diffuse in the flow section 9 . As a result, the atomized medicine 3 is evenly dispersed in the air, so that the concentration of the medicine 3 can be stabilized when it is sprayed onto the affected area.

As a result, the amount of drug 3 in filling portion 2 is reduced. Moreover, there is no need to increase the pressure or flow rate of the air blown onto the medicine 3 . Furthermore, there is no need to rely on the operating skill of the operator. On this basis, the powdered drug 3 can be stably supplied toward the affected area. As a result, it is possible to promote the use of the medicine ejection device 1 in the medical field. Moreover, since the inlet portion 8B of the drug discharge passage 8 is provided between the filling section 2 and the flow section 9, the drug 3 having a uniform concentration is flowed between the filling section 2 and the flow section 9. can be discharged toward the affected area.

The air supply passage 5 has an outlet portion 7B of the extending portion 7 on the charging portion 2 side, and has a throttle portion 7C for increasing the flow velocity of the air. As a result, the airflow accelerated by the narrowed portion 7C can effectively stir (scatter) the medicine 3 even at a small flow rate, and the concentration of the medicine 3 can be stabilized.

The air supply passage 5 has an extension 7 extending downward in the filling chamber 2A of the filling section 2 . Above this, a downward passage 7A that opens downward is formed inside the extension portion 7 . As a result, the downward passage 7A allows the air to flow downward toward the drug 3 along the inner peripheral surface of the filling chamber 2A, so that the drug 3 can be actively diffused.

A ceiling portion 9B of the flow portion 9 is formed as a concave surface including a spherical surface, a conical surface, and a pyramidal surface. Therefore, the medicine 3 in the air that is swirled up toward the flow section 9 can flow toward the filling chamber 2A side along the ceiling section 9B as indicated by an arrow E. By smoothening this series of flows, the medicine 3 can be evenly contained in the air.

Further, the air supply passage 5 and the medicine ejection passage 8 are provided in the same component with the axis A of the air supply passage 5 and the axis B of the medicine ejection passage 8 arranged at different eccentric positions. As a result, the axial dimension of the connecting tube portion 4 provided with the air supply passage 5 and the medicine ejection passage 8 can be kept small.

4 and 5 show a second embodiment of the invention. A feature of this embodiment is that the radial passage portion of the air supply passage and the medicine discharge passage are arranged at positions where their respective axes intersect. In addition, in this embodiment, the same code|symbol shall be attached|subjected to the component same as 1st Embodiment mentioned above, and the description shall be abbreviate|omitted.

In FIG. 4, the connecting tube part 11 is provided between the filling part 2 and the flow part 9, like the connecting tube part 4 according to the first embodiment. An air supply passage 12 and a medicine ejection passage 14, which will be described later, are provided as the same component in the connecting cylinder portion 11. As shown in FIG. A lower threaded portion 11A and an upper threaded portion 11B are provided on the inner peripheral side of the connecting tube portion 11 .

The air supply passage 12 is provided in the connecting cylinder portion 11 located above the filling portion 2, like the air supply passage 5 according to the first embodiment. The air supply passage 12 is formed (integrally molded) as the same component as the connecting tube portion 11 . The air supply passage 12 has a radial passage portion 13 and an extension portion 7 .

The radial passage portion 13 has an inward passage 13A, an inlet portion 13B, and a connecting portion 13C, like the radial passage portion 6 according to the first embodiment. The upper portion of the extension portion 7 is screwed to the connection portion 13C.

The medicine ejection passage 14 is provided in the connecting cylinder portion 11 located above the filling portion 2 together with the radial passage portion 13 of the air supply passage 12, similarly to the medicine ejection passage 8 according to the first embodiment. there is The drug ejection passage 14 is formed (integrally molded) as the same component as the connecting tube portion 11 . The inside of the medicine ejection passage 14 is an outward passage 14A. Also, the medicine ejection passage 14 has an inlet portion 14B and an outlet portion 14C.

Here, the arrangement relationship between the air supply passage 12 and the medicine ejection passage 14 according to the second embodiment will be described. As shown in FIG. 5, the axis F of the radial passage portion 13 (inward passage 13A) of the air supply passage 12 and the axis G of the medicine discharge passage 14 (outward passage 14A) are arranged at intersections. there is Specifically, the axis F of the radial passage portion 13 and the axis G of the medicine discharge passage 14 are arranged at positions that are offset by 90 degrees in the circumferential direction when the connecting tube portion 11 is viewed from above. On the other hand, as shown in FIG. 4, the axis F of the radial passage portion 13 and the axis G of the medicine ejection passage 14 are arranged at eccentric positions in which both the axis F and the axis G are different in the vertical direction (axial direction). ing. Further, the passage area of the medicine discharge passage 14 (outward passage 14A) is set to a larger value (larger opening) than the passage area of the radial passage portion 13 (inward passage 13A).

Although the axis F of the radial passage portion 13 and the axis G of the medicine ejection passage 14 are 90 degrees apart from each other in the circumferential direction in plan view, the position is 60 degrees or more and less than 180 degrees. can also be placed in

Thus, even in the second embodiment configured in this manner, substantially the same effects as those of the above-described first embodiment can be obtained.

Next, FIG. 6 shows a third embodiment of the invention. A feature of this embodiment resides in that the air supply passage is provided in the flow portion. In addition, in this embodiment, the same code|symbol shall be attached|subjected to the component same as 1st Embodiment mentioned above, and the description shall be abbreviate|omitted.

In FIG. 6, a medicine ejection device 21 according to the third embodiment includes a filling section 2, a medicine ejection passage 8, a flow section 9, and an air supply unit described later, as in the medicine ejection device 1 according to the first embodiment. It is configured including a passage 23 .

A connecting tube portion 22 according to the third embodiment is formed as a cylindrical body and provided between the filling portion 2 and the flow portion 9, like the connecting tube portion 4 according to the first embodiment. In addition, a lower threaded portion 22A and an upper threaded portion 22B are provided on the inner peripheral side of the connecting tube portion 22 . However, the connecting tubular portion 22 according to the third embodiment differs from the connecting tubular portion 4 according to the first embodiment in that an air supply passage 23, which will be described later, is not provided as the same component.

An air supply passage 23 according to the third embodiment is provided in the flow section 9 . The air supply passage 23 extends vertically along the inner peripheral surfaces of the filling chamber 2A and the flow chamber 9A at a position away from the medicine ejection passage 8. As shown in FIG. That is, the air supply passage 23 is formed as a cylindrical member extending vertically in the filling section 2 (filling chamber 2A), and the interior thereof serves as a downward passage 23A. The upper side of the air supply passage 23 is an inlet portion 23B which penetrates the upper portion of the flow portion 9 and protrudes to the outside. On the other hand, the lower side of the air supply passage 23 extends downward from the connecting tubular portion 22 to form an outlet portion 23C. Further, the air supply passage 23 has a constricted portion 23D positioned at an outlet portion 23C. This throttle portion 23D can increase the flow velocity of the air flowing out toward the filling chamber 2A. As a result, the airflow accelerated by the narrowed portion 23D can effectively stir (scatter) the medicine 3 even with a small flow rate.

Thus, even in the third embodiment configured in this manner, substantially the same effects as those of the above-described first embodiment can be obtained. In particular, according to the third embodiment, the downward passage 23A of the air supply passage 23 forms a straight line from the inlet portion 23B to the outlet portion 23C. As a result, the air can be smoothly circulated, and the stirring performance of the medicine 3 can be improved.

7 to 12 show a fourth embodiment of the invention. The drug ejection device of this embodiment has a diffusion section formed of an air supply passage, a drug ejection passage, and a flow section above the filling section. The filling section moves linearly in the lateral direction of the filling section with respect to the diffusing section, thereby moving between the air supply passage, the medicine ejection passage, and the sealed position where the outside is blocked, and the air supply passage and the medicine ejection passage. It is configured so as to be switchable between the communicating ejection positions. In addition, in this embodiment, the same code|symbol shall be attached|subjected to the component same as 1st Embodiment mentioned above, and the description shall be abbreviate|omitted.

In FIG. 7, a medicine ejecting device 31 according to the present embodiment uses compressed air to spray a powdery medicine 3 onto an affected area in order to stop bleeding when, for example, laparotomy, laparoscopic surgery, or the like is performed. is. The drug ejection device 31 includes a filling section 32, a diffusion section 33, an air supply passage 34, a drug ejection passage 35, and a flow section 37, which will be described later.

Here, the medicine ejecting device 31 is formed, for example, partially or wholly using a permeable resin material. In this case, the filling amount (remaining amount) of the medicine 3, which will be described later, and the presence or absence of problems such as clogging can be checked from the outside.

The filling part 32 is provided as a cylindrical container extending vertically. Specifically, as shown in FIGS. 8 to 10, the filling part 32 is formed as a cylindrical elongate container with an open top and a closed bottom. A filling chamber 32</b>A in which the powdery drug 3 is filled is formed in the filling part 32 . The filling part 32 also has a concave spherical bottom surface 32B at the bottom of the filling chamber 32A. Furthermore, a collar portion 32C is formed on the upper outer peripheral side of the filling portion 32 . The collar portion 32C engages with a guide groove 36C of the diffusion portion 33, which will be described later, so as to be linearly movable in the lateral direction of the diffusion portion 33. As shown in FIG.

The upper opening of the filling section 32 is sealed by a cover plate 36A of the linear moving section 36 forming the diffusion section 33 at a sealing position (position shown in FIGS. 8 and 11), which will be described later. As a result, the filling portion 32 is isolated from an air supply passage 34, a medicine ejection passage 35, and the outside, which will be described later. In this state, the drug 3 in the filling chamber 32A will not flow out. On the other hand, the filling portion 32 is arranged at a later-described ejection position (positions shown in FIGS. 9, 10, and 12) by linearly moving in the lateral direction of the filling portion 32 from the sealing position. At this ejection position, the filling portion 32 communicates with a flow chamber 37A, an air supply passage 34, and a medicine ejection passage 35 of a flow portion 37 that constitutes a diffusion portion 33, which will be described later. Air can be supplied from the air supply passage 34 to the filling chamber 32A when the filling section 32 is located at the discharging position. Then, the medicine 3 diffused in the flow chamber 37A can be discharged from the medicine discharge passage 35. As shown in FIG.

The diffusion section 33 is provided above the filling section 32 . The diffusion section 33 includes an air supply passage 34, a medicine discharge passage 35, a flow section 37, and a linear movement section 36, which will be described later.

The air supply passage 34 is formed (integrally molded) in the diffusion portion 33 as the same component as the diffusion portion 33 . Specifically, the air supply passage 34 extends vertically along the inner peripheral surface of the flow chamber 37</b>A of the flow portion 37 . That is, the air supply passage 34 is formed in a cylindrical shape extending vertically inside the filling section 32 (filling chamber 32A). The inside of the air supply passage 34 is a downward passage 34A. Further, the upper side of the air supply passage 34 is an inlet portion 34B that penetrates the upper portion of the diffusion portion 33 (the flow portion 37) and protrudes to the outside. The lower side of the air supply passage 34 extends downward to the linear moving portion 36 to form an outlet portion 34C. Further, the air supply passage 34 has a constricted portion 34D located at an outlet portion 34C. This narrowed portion 34D can increase the flow velocity of the air flowing out toward the filling chamber 32A. As a result, the airflow accelerated by the narrowed portion 34D can effectively stir (scatter) the medicine 3 even with a small flow rate. In addition, the air supply passage 34 may be formed as a part separate from the diffusion portion 33 .

The drug ejection passage 35 is provided in the diffusion section 33 located above the filling section 32 . The medicine ejection passage 35 is arranged on the side opposite to the air supply passage 34 in the radial direction of the diffusion portion 33 . The medicine ejection passage 35 is formed (integrally molded) as the same component as the diffusion portion 33 . The drug discharge passage 35 discharges the drug 3 in the filling chamber 32A of the filling section 32 to the outside together with the air supplied from the air supply passage 34 to the filling section 32 . The medicine ejection passage 35 extends in the lateral direction of the filling portion 32 , that is, in the radial direction of the diffusion portion 33 and opens. The inside of the medicine ejection passage 35 is an outward passage 35A through which air flows from the inside to the outside in the radial direction of the diffusion portion 33 . As a result, the drug ejection passage 35 has an inlet portion 35B on the filling portion 32 side, which is the upstream side in the air flow direction, and an outlet portion 35C on the downstream side protruding to the outside.

An inlet portion 34B of the air supply passage 34 is connected to, for example, a compressed air supply source such as a compressor. Inlet portion 34B can also be connected to a compressed fluid supply that supplies other gases besides a compressed air supply. Further, a manual pump or the like can be connected to the inlet portion 34B. For example, a pipe member (hose) extending to the affected area is connected to the outlet portion 35C of the medicine ejection passage 35 .

The linear moving part 36 is provided below the diffusion part 33 . The linear moving portion 36 includes a flange portion 32C of the filling portion 32 described above, a lid plate 36A described later, a guide portion 36B, and a guide groove 36C.

As shown in FIGS. 7 and 12 , the cover plate 36A of the linear moving portion 36 is formed as a U-shaped plate extending from the lower portion of the diffusion portion 33 in the lateral direction of the diffusion portion 33 . The cover plate 36A is formed as a flat plate facing the opening of the filling portion 32. As shown in FIG. The lower surface of the cover plate 36A is flush with the lower end of the diffusion section 33. As shown in FIG. In addition, the length dimension of the cover plate 36A is set to the same dimension as the diameter dimension of the filling portion 32. As shown in FIG. Thereby, as shown in FIG. 8, the cover plate 36A can seal the opening of the filling section 32 when the filling section 32 is displaced from the diffusion section 33 and arranged at the sealing position.

The guide portion 36B is provided across the lower portion of the diffusion portion 33 and the lower portion of the cover plate 36A. The guide portion 36B protrudes downward from the peripheral edge of the diffusion portion 33 and the cover plate 36A except for the arc-shaped tip portion of the cover plate 36A. A guide groove 36C that opens inward is formed along the entire length of the guide portion 36B. As shown in FIG. 10 and the like, the flange portion 32C of the filling portion 32 is engaged with the guide groove 36C so as to be movable in the lateral direction of the diffusion portion 33. As shown in FIG. For example, the size of the guide groove 36C is set so that the flange portion 32C of the filling portion 32 slides with frictional resistance. Thereby, the filling part 32 can be fixed at the sealing position and the discharging position using frictional resistance. It is also possible to provide a concave-convex engaging portion between the guide groove 36C and the flange portion 32C of the filling portion 32, and to fix the sealing position and the discharge position with this concave-convex engaging portion. In addition, when the medicine 3 is powder with fine particles, a seal member such as an O-ring can be set on the upper surface of the collar portion 32C.

Next, the configuration of the flow section 37 and the flow of the air and the medicine 3 by the flow section 37, which are the features of this embodiment, will be described in detail.

The flow portion 37 is a space extending upward from the inlet portion 35B of the medicine ejection passage 35 . The flow section 37 is formed as a lidded cylindrical container that is open at the bottom and closed at the top. Inside the flow section 37, a flow chamber 37A is formed in which the powdery medicine 3 that has been picked up by the filling section 32 is flowed and diffused. A ceiling portion 37B of the flow portion 37 is formed as a spherical concave surface above the flow chamber 37A. The ceiling portion 37B may be formed as a concave surface composed of a conical surface or a pyramidal surface other than the spherical surface. Further, a linear moving portion 36 is provided below the flow portion 37 . The ceiling portion 37B, which has a concave spherical surface, allows the drug 3 in the air, which is swirled up in the filling chamber 32A, to smoothly flow along the spherical shape as indicated by arrow E in FIG.

The medicine ejection device 31 according to the present embodiment has the configuration as described above. I will describe the flow of

The medicine ejection device 31 can be stored, transported or carried in the states shown in FIGS. 7, 8 and 11. FIG. Specifically, FIGS. 7, 8, and 11 show the drug ejection device 31 with the filling section 32 arranged at the sealing position. At the sealing position of the filling section 32 , the opening of the filling section 32 (filling chamber 32A) is sealed by the cover plate 36A of the linear moving section 36 . Therefore, it is possible to prevent the medicine 3 in the filling chamber 32A from flowing out during storage, transportation or carrying.

Next, in the preparatory work for ejecting the medicine 3, for example, the spreading portion 33 is gripped with one hand and the filling portion 32 is gripped with the other hand. In this state, the filling section 32 is translated so that the filling section 32 and the flow section 37 are aligned (coaxially). At this time, the linear moving part 36 guides the filling part 32 linearly, so that the filling part 32 can be moved smoothly.

9, 10, and 12, the discharge position of the filling section 32 is the state in which the filling section 32 and the flow section 37 are arranged in a straight line. At the ejection position of the filling section 32, the charging chamber 32A communicates with the downward passage 34A of the air supply passage 34, the outward passage 35A of the medicine ejection passage 35, and the flow chamber 37A of the flow section 37.

After the filling unit 32 is moved to the ejection position and the preparatory work is completed, the medicine 3 is ejected using the medicine ejection device 31 .

When compressed air is supplied downward from the downward passage 34A of the air supply passage 34 as indicated by arrow C in FIG. Furthermore, the drug 3 that has been rolled up flows in the direction of arrow E in the flow section 37 . This flow in the direction of arrow E extends the flow distance (diffusion time) of the medicine 3 in a limited space, and enhances the scattering efficiency of the medicine 3 .

As a result, even when part of the medicine 3 is solidified, the solidified medicine 3 can be sufficiently dispersed and atomized. The atomized drug 3 is ejected toward the affected area through the outward passage 35A of the drug ejection passage 35 .

Thus, even in the fourth embodiment configured in this manner, substantially the same effects as those of the above-described first embodiment can be obtained. In particular, according to the fourth embodiment, the upper side of the filling section 32 has the diffusion section 33 composed of the air supply passage 34 , the medicine discharge passage 35 and the flow section 37 . On this, the filling part 32 moves in the lateral direction of the filling part 32 with respect to the diffusion part 33, thereby moving to a sealed position where the air supply passage 34, the medicine ejection passage 35 and the outside are cut off, and the air supply It is configured to be switchable to an ejection position communicating with the passage 34 and the medicine ejection passage 35 . As a result, at the sealing position of the filling part 32, the drug 3 in the filling chamber 32A can be prevented from flowing out during storage, transportation, or carrying, and can be easily handled.

Since the linear moving part 36 can seal the filling chamber 32A of the filling part 32 without using a seal member or the like, the number of parts can be reduced and the cost can be reduced. At the sealing position of the filling section 32, the air supply passage 34, the medicine ejection passage 35, and the outside can be blocked from the filling chamber 32A. As a result, it is possible to prevent the medicine 3 from clogging the air supply passage 34 and the medicine ejection passage 35 during storage or the like.

Furthermore, the filling part 32 is configured to move linearly between the sealing position and the discharging position. As a result, the filling part 32 can be easily moved from the sealing position to the discharging position by simply pushing the filling part 32 linearly once. can do.

13 to 17 show a fifth embodiment of the invention. A feature of this embodiment is that, above the filling section, there is a diffusion section composed of an air supply passage, a medicine ejection passage, and a flow section, and the filling section is arcuate in the lateral direction of the filling section with respect to the diffusion section. , the position can be switched between a sealed position in which the air supply passageway, the medicine ejection passageway and the outside are blocked, and an ejection position in which the air supply passageway and the medicine ejection passageway are communicated with each other. In addition, in this embodiment, the same code|symbol shall be attached|subjected to the component same as 4th Embodiment mentioned above, and the description shall be abbreviate|omitted.

In FIG. 13, a medicine ejecting device 41 according to this embodiment includes a filling section 42 and a diffusion section 43, which will be described later.

As shown in FIG. 15, the filling part 42 is formed as an elongated cylindrical container with an open top and a closed bottom, like the filling part 32 according to the fourth embodiment. The filling section 42 has a filling chamber 42A and a concave spherical bottom surface 42B. Further, on the outer peripheral side of the upper portion of the filling portion 42, there are a flange portion 42C, an extension portion 42D projecting radially from a portion of the flange portion 42C in the circumferential direction, and a filling portion 42 located at the tip of the extension portion 42D. is provided with a pin hole 42E that penetrates in the length direction of the .

The collar portion 42C engages with a guide groove 44D, which will be described later, at least at the tip located on the side opposite to the extension portion 42D. Further, the pin 45 is inserted into the pin hole 42E while being coaxial with the pin hole 44B of the cover plate 44A. Thereby, the filling portion 42 can move in an arc around the pin 45 (pin hole 42E).

At the sealing position (position shown in FIGS. 14 and 16), which will be described later, the upper opening of the filling section 42 is sealed by the cover plate 44A of the arc-shaped moving section 44 that constitutes the diffusion section 43, and the air supply passage 34 is closed. , the medicine discharge passage 35 and the outside are blocked. In this state, the medicine 3 in the filling chamber 42A does not flow out to the outside. On the other hand, the filling portion 42 is arranged at a later-described ejection position (position shown in FIGS. 15 and 17) by being moved in an arc from the sealing position in the lateral direction of the filling portion 42 . At this ejection position, the filling portion 42 communicates with a flow chamber 37A, an air supply passage 34, and a medicine ejection passage 35 of a flow portion 37 constituting a diffusion portion 43, which will be described later. Air can be supplied from the air supply passage 34 to the filling chamber 42A when the filling section 42 is located at the discharging position. Then, the medicine 3 diffused in the flow chamber 37A can be discharged from the medicine discharge passage 35. As shown in FIG.

The diffusion portion 43 is provided above the filling portion 42 . The diffusion portion 43 includes the air supply passage 34, the medicine discharge passage 35, the flow portion 37, and the arc-shaped moving portion 44, which will be described later.

The arc-shaped moving part 44 is provided below the diffusion part 43 . The arc-shaped moving portion 44 includes the flange portion 42C of the filling portion 42 described above, the extension portion 42D, the pin hole 42E, the cover plate 44A described later, the pin hole 44B, the guide portion 44C, the guide groove 44D, and the pin 45. ing.

As shown in FIGS. 13 and 16 , the cover plate 44A of the arc-shaped moving portion 44 is formed as a fan-shaped plate extending from the lower portion of the diffusion portion 43 in the lateral direction of the diffusion portion 43 . The lid plate 44A is formed as a flat plate that faces the opening of the filling portion 42 . The lower surface of the cover plate 44A is flush with the lower end of the diffusion portion 43. As shown in FIG. Further, the lid plate 44A has a pin hole 44B that penetrates the diffusion portion 43 in the longitudinal direction at a fan-shaped pivot point. The lid plate 44A is a fan-shaped plate with a dimension equivalent to the diameter dimension of the filling portion 42, that is, about 90 degrees in the circumferential direction around the pin hole 44B. As a result, as shown in FIG. 16, the cover plate 44A can seal the opening of the filling section 42 when the filling section 42 is displaced from the diffusion section 43 and arranged at the sealing position.

A pin 45 is inserted from above into the pin hole 44B of the cover plate 44A. The pin 45 is inserted into the pin hole 42E of the filling portion 42. As shown in FIG. Accordingly, the filling portion 42 (flange portion 42C, extension portion 42D) is attached to the cover plate 44A so as to be horizontally rotatable about the pin 45. As shown in FIG.

The guide portion 44C is provided over the lower portion of the diffusion portion 43 and the lower portion of the cover plate 44A. The guide portion 44C is formed so as to protrude downward from the periphery of the diffusion portion 43 and the cover plate 44A except for the periphery of the pin hole 44B. A guide groove 44D opening inward is formed along the entire length of the guide portion 44C. As shown in FIGS. 15 to 17, the flange portion 42C of the filling portion 42 is engaged with the guide groove 44D so as to be movable in the lateral direction of the diffusion portion 43. As shown in FIGS. For example, the size of the guide groove 44D is set so that the collar portion 42C of the filling portion 42 slides with frictional resistance. Thereby, the filling part 42 can be fixed at the sealing position and the discharging position using frictional resistance. It is also possible to provide a concave-convex engaging portion between the guide groove 44D and the flange portion 42C of the filling portion 42, and fix the sealing position and the discharge position with this concave-convex engaging portion. Further, when the medicine 3 is a powder with fine particles, a sealing member such as an O-ring can be set on the upper surface of the collar portion 42C.

The medicine ejecting device 41 according to the present embodiment has the configuration as described above. Next, preparation work for ejecting the medicine 3 will be described.

The medicine ejection device 41 can be stored, transported or carried in the states shown in FIGS. 13, 14 and 16. FIG. Specifically, FIGS. 13, 14, and 16 show the medicine ejection device 41 with the filling section 42 arranged at the sealing position. At the sealing position of the filling section 42 , the opening of the filling section 42 (filling chamber 42A) is sealed by the cover plate 44A of the arc-shaped moving section 44 . Therefore, it is possible to prevent the medicine 3 in the filling chamber 42A from flowing out during storage, transportation, or carrying.

Next, in the preparatory work for ejecting the medicine 3, for example, the spreading portion 43 is gripped with one hand and the filling portion 42 is gripped with the other hand. In this state, the filling section 42 is moved in an arc shape in the direction of arrow H (see FIG. 16) so that the filling section 42 and the flow section 37 are aligned (coaxially). At this time, the arcuate moving portion 44 can smoothly move the filling portion 42 by guiding the filling portion 42 with the guide portion 44C (guide groove 44D).

Then, as shown in FIGS. 15 and 17, the discharge position of the filling section 42 is a state in which the filling section 42 and the flow section 37 are arranged in a straight line. At the discharge position of the filling section 42, the filling chamber 42A communicates with the downward passage 34A of the air supply passage 34, the outward passage 35A of the drug discharge passage 35, and the flow chamber 37A of the flow section 37.

Thus, even in the fifth embodiment configured in this way, it is possible to obtain substantially the same effects as those of the above-described fourth embodiment. In particular, according to the fifth embodiment, the filling part 42 is configured to move in an arc between the sealing position and the discharging position. Thereby, the filling part 42 can be easily moved from the sealing position toward the discharging position.

In addition, in the fourth embodiment, the case where the air supply passage 34 is provided so as to extend in the vertical direction of the diffusion portion 33 is exemplified. However, the present invention is not limited to this. It may be configured by a part. This configuration can be similarly applied to the fifth embodiment.

Further, in each embodiment, a case where the medicine ejecting device 1 is applied to eject the medicine 3 for stopping bleeding when laparotomy, laparoscopic surgery, or the like is performed is exemplified. However, the present invention is not limited to this. For example, when spraying a hemostatic agent on wounds such as cuts and abrasions, or when spraying a drug on the larynx, pharynx, trachea, etc., the medicine ejection device may be used.

Next, as a medicine ejecting device included in the above embodiment, for example, the following modes are conceivable.

As a first aspect of the medicine ejecting device, there is provided a filling portion extending in the vertical direction and filled with a powdered medicine, and an air supply that opens toward the inside of the filling portion and supplies air to the inside of the filling portion. a passageway, a medicine discharge passageway extending in the lateral direction above the filling section and opening to discharge the medicine together with the air supplied from the air supply passageway to the filling section; an entrance of the medicine discharge passageway. and a flowing portion that is made up of a space extending upward from the filling portion and that flows and diffuses the drug that has been rolled up by the filling portion.

A second aspect of the medicine ejection device is characterized in that, in the first aspect, the air supply passage has a constricted portion for increasing the flow velocity of the air at an outlet portion on the filling portion side. there is

As a third aspect of the medicine ejection device, in the first or second aspect, the air supply passage includes a radial passage portion extending in the lateral direction of the filling portion and a radial passage portion within the filling portion. and an extension portion extending downward from the portion, and a downward passage opening downward is formed inside the extension portion.

As a fourth aspect of the medicine ejecting device, in any one of the first to third aspects, the ceiling portion of the flow portion is formed as a concave surface including a spherical surface, a conical surface, and a pyramidal surface. and

As a fifth aspect of the medicine ejecting device, in any one of the first to fourth aspects, the air supply passage has an inlet portion that opens in the lateral direction of the filling portion, and an outlet portion that is the same as the inlet portion. It is characterized by having openings in different directions.

As a sixth aspect of the medicine ejecting device, in any one of the first to fifth aspects, the air supply passage and the medicine ejecting passage are arranged in the same eccentric position with their axes being different. It is characterized in that it is provided in the component.

As a seventh aspect of the medicine ejecting device, in the first or second aspect, a diffusing portion composed of the air supply passage, the medicine ejecting passage and the flow portion is provided above the filling portion, and the The filling section moves in the lateral direction of the filling section with respect to the diffusion section, thereby moving between the air supply passage, the medicine ejection passage and a sealed position where the outside is cut off, the air supply passage and the medicine. It is characterized by being switchable to a discharge position communicating with the discharge passage.

An eighth aspect of the medicine ejection device is characterized in that, in the seventh aspect, the filling section moves linearly between the sealing position and the ejection position.

A ninth aspect of the medicine ejection device is characterized in that, in the seventh aspect, the filling section moves in an arc between the sealing position and the ejection position.

1, 21, 31, 41 drug ejection device 2, 32, 42 filling part 3 drug 5, 12, 23, 34 air supply passage 6, 13 radial direction passage part 6B, 8B, 13B, 14B, 23B, 34B, 35B inlet Part 7 Extension part 7A Downward passage 7B, 23C, 34C, 35C Exit part 7C, 23D, 34D Constricted part 8, 14, 35 Medicine ejection passage 9, 37 Flow part 9B, 37B Ceiling part 33, 43 Diffusion part 36 Linear shape Moving part 44 Circular moving part A, B, F, G Axis

Claims (5)

a filling part provided extending in the vertical direction and filled with a powdered drug;
an air supply passage that opens into the filling section and supplies air into the filling section;
a drug discharge passage that extends in the lateral direction above the filling section and opens to discharge the drug together with air supplied from the air supply passage to the filling section;
a flowing portion, which is composed of a space extending upward from the entrance portion of the medicine ejection passage, and which flows and diffuses the medicine that has been rolled up by the filling portion;
with
The air supply passage has a radial passage portion extending in a lateral direction of the filling portion and an extension portion extending downward from the radial passage portion within the filling portion,
A medicine ejecting device , wherein a downwardly opening passage is formed inside the extending portion . The medicine ejection device according to claim 1,
A medicine ejection device, wherein the air supply passage and the medicine ejection passage are provided in the same part with their axes arranged at different eccentric positions. a filling part provided extending in the vertical direction and filled with a powdered drug;
an air supply passage that opens into the filling section and supplies air into the filling section;
a drug discharge passage that extends in the lateral direction above the filling section and opens to discharge the drug together with air supplied from the air supply passage to the filling section;
a flowing portion, which is composed of a space extending upward from the entrance portion of the medicine ejection passage, and which flows and diffuses the medicine that has been rolled up by the filling portion;
with
Above the filling section, a diffusion section including the air supply passage, the drug discharge passage and the flow section is provided,
By moving the filling section in the lateral direction of the filling section with respect to the diffusion section, the air supply passage, the medicine discharge passage and a sealing position where the outside is blocked, the air supply passage and the A medicine ejection device characterized by being switchable to an ejection position communicating with a medicine ejection passage. The medicine ejection device according to claim 3 ,
The medicine ejecting device, wherein the filling part moves linearly between the sealing position and the ejecting position. The medicine ejection device according to claim 3 ,
The medicine ejecting device, wherein the filling part moves in an arc between the sealing position and the ejecting position.

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