JP4805777B2 - Nozzle holding mechanism and nozzle holding mechanism in liquid medicine supply device - Google Patents

Description

  The present invention relates to a nozzle holding mechanism and a nozzle holding mechanism in a liquid medicine supply device.

  Conventionally, in medical institutions such as hospitals and pharmacies, liquid medicine supply devices have been used that supply liquid medicine filled in supply bottles to liquid medicine bottles provided to patients from the supply bottles ( For example, see Patent Document 1 below). In this liquid medicine supply device, one end of a supply pipe inserted into the supply bottle is attached to the supply nozzle, and the liquid medicine is discharged from the supply nozzle to the liquid medicine bottle by driving the supply pump.

Since the supply nozzle needs to reliably discharge the liquid medicine to the liquid medicine bottle, the holder is securely attached to the nozzle mounting portion of the liquid medicine supply device by screwing the holder to the upper surface of the nozzle mounting portion. The nozzle is attached so as to be fixed.
JP 2003-325639 A

  Since the nozzle in the liquid medicine supply device discharges liquid medicine, the periphery of the nozzle is likely to become dirty due to the liquid medicine entering between the holder and the nozzle mounting surface. Therefore, it is necessary to frequently perform maintenance such as cleaning around the nozzle for hygiene management. However, if the holder is fixed by screwing as described above, the cleaning operation cannot be performed without removing the screw, and the holder must be screwed again after the cleaning operation is completed. There was a lot of time for cleaning work. In addition, the replacement work of the nozzle also requires a lot of time.

  Such a problem occurred not only with respect to the nozzle of the liquid medicine supply device, but also with respect to the support portion of the nozzle attached to the apparatus that handles liquids and gases other than liquid medicine.

  In view of the above problems, the present invention provides a nozzle holding mechanism and a nozzle holding mechanism in a liquid medicine supply device that can reliably attach a nozzle to a nozzle mounting portion and can easily perform maintenance such as cleaning and nozzle replacement in a short time. The issue is to provide

  The present invention connects a supply pipe inserted into a liquid medicine supply bottle filled with liquid medicine to a nozzle attached to a nozzle mounting portion, and discharges liquid medicine from the nozzle to a liquid medicine bottle provided to a patient. In the liquid medicine supply apparatus as described above, the nozzle holding mechanism is attached to the nozzle attachment portion and is rotatable around the support shaft so as to be rotatable in parallel with the nozzle attachment surface of the nozzle attachment portion. In addition, there is provided a holding body provided with a fitting portion that rotates around the support shaft and is fitted to the fitted portion of the nozzle from the side thereof, and the holding body is arranged in one direction around the support shaft. A fitting posture in which the fitting portion is fitted from the side with respect to the fitting portion of the nozzle and a releasing posture in which the fitting with the nozzle is released by turning in the other direction around the support shaft. And has holding means for holding the fitting posture of the holding body. It is characterized in that there.

In the nozzle holding mechanism in the liquid medicine supply device having the above-described configuration, the holding body is rotatable around the support shaft. Therefore, by rotating the holding body around the support shaft, the holding body rotates in parallel with the nozzle mounting surface. It is switched between a fitting posture and a releasing posture, and in the fitting posture of the holding body, the fitting portion is fitted to the held portion of the nozzle from the side. Since the posture is maintained, the nozzle is reliably held in the predetermined posture.
Then, the holding body is rotated around the supporting shaft so as to release the fitting between the fitting portion of the holding body and the held portion of the nozzle against the holding force by the holding means, and the holding body is set to the release posture. Thus, the portion of the nozzle mounting surface covered by the fitting posture of the holding body is released.
In addition, the predetermined attitude | position of a nozzle is an attitude | position attached to the nozzle attachment surface so that a liquid medicine may be discharged to a liquid medicine bottle through a nozzle and this liquid medicine bottle may be filled with a liquid medicine.

  In the nozzle holding mechanism of the liquid medicine supply device of the present invention, the held part of the nozzle is formed in a cylindrical shape, and the liquid medicine is discharged to the liquid medicine bottle through the nozzle mounting part on one side in the axial direction of the held part. A discharge port portion is formed, and an introduction port portion to which a liquid medicine supply pipe is connected is formed on the other side in the axial direction of the held portion, and the nozzle is detachably attached to the nozzle mounting portion. The shaft center of the support shaft and the shaft center of the held portion are configured to be parallel to each other while penetrating the nozzle mounting portion.

  In the above configuration, when the nozzle discharge port portion is made to penetrate the nozzle mounting portion, the held portion of the nozzle and the support shaft are in parallel, and when the support body is rotated around the support shaft, the support body is fitted. Since the joint portion is fitted to the held portion of the nozzle from the side, and the held portion of the nozzle and the support shaft are parallel to each other, the holding body can be easily rotated. The structure of the holding body can be simplified as compared with the case where the support shaft is not parallel.

  In the nozzle holding mechanism in the liquid medicine supply device of the present invention, a one-side ridge that protrudes radially outward is integrally provided at the boundary between the held portion and the discharge port portion of the nozzle, and is fitted. The one-side avoiding recess for avoiding the one-side hook is formed in the portion, and the one-side holding surface that overlaps the flange surface of the one-side hook in the axial direction is provided.

According to the above configuration, when the nozzle passes through the nozzle mounting portion, the one side flange comes into contact with the nozzle mounting surface, and when the holding body is in the fitting posture in this state, the fitting portion of the holding body becomes the held portion of the nozzle. In addition, since the one side holding surface of the holding body overlaps the flange surface of the one side flange from the axial direction, the predetermined posture of the nozzle is reliably held.
In this case, the term “overlapping from the axial direction on the side surface of the one side flange” means that the nozzle overlaps with the one side surface from above, and the nozzle is prevented from blurring about its axis.

  In the nozzle holding mechanism in the liquid medicine supply device of the present invention, the other side rod protruding radially outward is integrally provided at the boundary between the held portion of the nozzle and the introduction port portion, and is fitted. The other side avoiding recess for avoiding the other side hook is formed in the part, and the other side holding surface that overlaps the flange surface of the other side hook in the axial direction is provided.

According to the above configuration, when the nozzle passes through the nozzle mounting portion, the one side flange comes into contact with the nozzle mounting surface, and when the holding body is in the fitting posture in this state, the fitting portion of the holding body becomes the held portion of the nozzle. So that the one side holding surface of the holding body overlaps the flange surface of the one side flange from the axial direction, and the other side holding surface of the holding body overlaps the flange surface of the other side flange from the axial direction. Therefore, the predetermined posture of the nozzle is securely held.
In this case, “overlapping from the axial direction on the flange surface of the other side rod” means that the nozzle overlaps with the other side rod from the up-down direction, and the nozzle is prevented from blurring around its axis.

  In the nozzle holding mechanism in the liquid medicine supply device of the present invention, the fitting portion has a holding recess that fits outside the fitted portion of the nozzle. According to this configuration, when the holding body is rotated around the support shaft to be in the fitting posture, the holding recess is fitted into the fitting portion of the nozzle, and the nozzle fitting posture is held. The posture is securely held.

  In the nozzle holding mechanism in the liquid medicine supply device of the present invention, the holding means is a fitting provided on the holding body and detachable into a recess formed on the nozzle mounting surface, and the fitting is connected to the nozzle mounting surface side. And the fitting is in contact with the nozzle mounting surface by the elastic force of the spring in the fitting posture of the holding body, and the recess is in the fitting posture of the holding body. It is characterized by being set to a fitting position.

  In the above configuration, when the holding body is in the fitting posture, the fitting tool is fitted into the recess by the elastic force of the spring to hold the fitting posture of the holding body, and the holding body is rotated against the elastic force of the spring. When moved, the fitting comes out of the recess and moves while sliding on the nozzle mounting surface by the elastic force of the spring.

  The nozzle holding mechanism in the liquid medicine supply device of the present invention is characterized in that the fitting is formed in a spherical shape. According to this configuration, since the outer peripheral surface of the fitting tool is a curved surface, it can be slid with a small force when sliding on the nozzle mounting surface. It enters securely and holds the fitting posture of the holding body.

According to the nozzle holding mechanism in the aqueous drug supply device of the present invention, since the holding member is rotatably around the support shaft, by rotating the holding member to the support shaft around the retaining member is parallel to the nozzle mounting surface Can be switched between a fitting posture and a releasing posture. In the fitting posture of the holding body, the fitting portion is fitted to the held portion of the nozzle from the side. Since the position of the holding body is held by the nozzle, the nozzle can be reliably held in the predetermined position, and the fitting portion of the holding body and the held portion of the nozzle are fitted against the holding force by the holding means. By rotating the holding body around the support shaft so as to release the nozzle and setting the holding body to the releasing posture, the portion of the nozzle mounting surface covered by the fitting posture of the holding body is released. To maintenance such as cleaning the nozzle mounting surface and replacing nozzles Easily, yet it can be performed in a short time.

  Further, in the nozzle holding mechanism in the liquid medicine supply device of the present invention, the holding body is axially provided on one side wall provided so as to protrude radially outward at the boundary between the held portion of the nozzle and the discharge port portion. Since the one side holding surface that overlaps is provided, by passing the nozzle through the nozzle mounting part and abutting the one side hook on the nozzle mounting surface to bring the holding body into a fitting posture, the liquid medicine flowing in the nozzle Even if the force vector direction works in the circumferential direction inside the nozzle, it is possible to prevent the nozzle from coming off from the holding body and to reliably hold the predetermined posture of the nozzle.

  Furthermore, in the nozzle holding mechanism in the liquid medicine supply device of the present invention, the holding body is axially provided on the other side ridge provided so as to protrude radially outward at the boundary portion between the held portion of the nozzle and the introduction port portion. Since the overlapping holding surface on the other side is provided, the vector direction of the force of the liquid medicine flowing in the nozzle is set in the circumferential direction inside the nozzle by passing the nozzle through the nozzle mounting portion and setting the holding body in the fitting posture. Even if it works, it is possible to prevent the nozzle from coming off from the holding body and to reliably hold the predetermined posture of the nozzle.

Hereinafter, an example of the nozzle holding mechanism in engagement Ru water medicine supply apparatus of the present invention will be described with reference to the drawings. FIG. 1 thru | or 4 is explanatory drawing which shows the whole structure of a liquid medicine supply apparatus. First, a schematic configuration of the liquid medicine supply device 1 according to the embodiment of the present invention will be described.

  As shown in these figures, the liquid medicine supply device 1 is a liquid medicine supply bottle (hereinafter referred to as a liquid medicine supply bottle) containing necessary liquid medicines 2 prepared in advance for responding to prescriptions. A liquid medicine supply pipe (hereinafter simply referred to as “supply pipe”) 29 is led out from the liquid medicine supply pipe (hereinafter simply referred to as “supply pipe”) 29, and is supplied from the supply nozzle 22 via a liquid medicine supply nozzle (hereinafter simply referred to as “supply nozzle”) 22. The liquid medicine 2 is configured to be discharged into the liquid medicine bottle 4.

  The liquid medicine supply device 1 includes a main body 6 constituting an outer frame, a nozzle attachment plate (nozzle attachment portion) 53 for attaching a supply nozzle 22 suspended in the main body 6 via the rotation drive unit 17 and the main body 6. The mounting body 5 for mounting the supply bottle 3 and a plurality of supply pumps 18 are provided. In addition, the supply pump 18 is provided for every supply bottle 3 arrange | positioned by the mounting body 5 at predetermined intervals in the circumferential direction, and is a pump generally used for this kind of liquid medicine supply apparatus.

  The liquid medicine supply device 1 includes a mounting table 24 on which the liquid medicine bottle 4 is mounted, and a lifting device (not shown) for moving the mounting table 24 up and down. The mounting table 24 is disposed at the lower part of the front surface of the main body 6, and can be moved up and down by being guided by both side wall portions 75 and 76 of a notch 74 having the lower part of the front surface cut out from above to below.

  The nozzle mounting plate 53 and the mounting body 5 are formed in an annular shape in plan view, and the supply pump 18 is attached to a plurality of mounting frame bodies 36 provided so as to be adjacent to the nozzle mounting plate 53 in the circumferential direction. Each is installed. The nozzle mounting plate 53, the mounting body 5, and the mounting frame body 36 are configured to rotate intermittently around the vertical axis 16 by driving the rotation driving unit 17.

  In particular, the nozzle mounting plate 53 is formed with the same number of protrusions 54 protruding outward in the radial direction at the outer peripheral portion at equal intervals as the supply pump 18 in the circumferential direction. That is, the supply nozzle 22 is configured to be attached to the protruding portion 54 of the nozzle mounting plate 53 by the number equal to the supply pump 18.

  Further, an insertion holding recess 55 for inserting and holding the middle portion of the supply pipe 29 is formed between the protrusion 54 and the protrusion 54. The insertion holding recess 55 is formed such that the outer periphery of the nozzle mounting plate 53 is cut out inward in the radial direction. The cutout shape is formed in a circular shape in which the outer diameter in the radial direction is smaller than the diameter of the supply pipe 29 in plan view and the inner diameter in the radial direction is substantially equal to the diameter of the supply pipe 29.

  The nozzle mounting plate 53 including the projecting portion 54 has a flat upper surface, and a certain area including the projecting portion 54 and the rear thereof is specified as the nozzle mounting surface 56. Each protrusion 54 is formed with a holding hole 57 into which the supply nozzle 22 is inserted from above.

  5 to 7 are perspective views drawn around the supply nozzle 22 and the holding body for holding the supply nozzle 22, and FIG. 8 is a plan view. As shown in these drawings, the supply nozzle 22 includes a cylindrical held portion 25, a discharge port portion 26 provided on one side (lower portion) of the held portion 25, and the other side (upper portion) of the held portion 25. ) Provided on the boundary portion between the held portion 25 and the discharge port portion 26, the one side rod 28 provided so as to protrude outward in the radial direction, the held portion 25 and the introduction port portion. 27 is formed integrally with the other side flange 30 provided so as to protrude radially outward at the boundary portion with 27.

  The discharge port portion 26 and the introduction port portion 27 are both formed in a conical shape, and a supply path 31 through which the liquid medicine 2 flows is formed at the radial center of the supply nozzle 22. The one side rod 28 and the other side rod 30 are each formed in an annular shape and are parallel to each other.

  The supply nozzle 22 has its discharge port portion 26 inserted into the holding hole 57 from above, and the shaft 33 has the nozzle mounting surface 56 in a state where the lower collar surface 32 of the one side collar 28 is in contact with the nozzle mounting surface 56. It is comprised so that it may become perpendicular | vertical to. The supply nozzle 22 is detachable from the nozzle mounting surface 56.

  The holding mechanism 23 is provided on the nozzle mounting surface 56 of the nozzle mounting plate 53. The holding mechanism 23 supplies the supply nozzle 22 in its supply posture A, that is, the supply nozzle 22 is in a posture perpendicular to the nozzle attachment surface 56 with the lower collar surface 32 of the one side rod 28 contacting the nozzle attachment surface 56. This is for maintaining the posture attached to the nozzle attachment surface 56 so as to fill the liquid medicine bottle 4 with the liquid medicine 2 through the nozzle 22.

  The holding mechanism 23 includes a holding body 35 and a lock unit 37 (corresponding to a holding unit). The holding body 35 is pivoted in one direction around the support shaft 38 so that the hook-like fitting portion 39 is fitted to the held portion 25 of the supply nozzle 22 from the side and the support posture B. It is possible to switch to a release posture C for releasing the holding of the supply nozzle 22 by rotating the shaft 38 in the other direction.

  The holding body 35 includes a holding body main body 40 on the base end side through which a support shaft 38 whose lower end portion is rotatably inserted into the nozzle mounting surface 56, and a fitting portion 39 provided on the distal end side of the holding body main body 40. And have. In the holding body 40, at least the lower surface 41 of the upper and lower surfaces is formed to be a flat surface so as to slide in contact with the nozzle mounting surface 56 when the holding body 35 rotates around the support shaft 38.

  The fitting portion 39 of the holding body 35 is rotatable around the support shaft 38 so as to be rotatable in a state parallel to the nozzle mounting surface 56, and further rotated around the support shaft 38 in the vertical direction. Then, the supply nozzle 22 is fitted to the held portion 25 from the side.

  The fitting portion 39 of the holding body 35 has a holding recess 42 that fits outside the held portion 25 of the supply nozzle 22. The holding recess 42 has a curved surface 43 that is concave toward the direction of the fitting posture B and the counter-rotating side in plan view. An inclined surface 44 that is inclined toward the distal end side in plan view is formed from the holding body 40 to the fitting portion 39. The curvature of the curved surface 43 substantially matches the curvature of the held portion 25. An extension portion 52 is formed on the distal end side of the fitting portion 39 so as to extend in a tangential direction with respect to the bending direction of the curved surface 43. The height of the holding recess 42 is set to be higher than the height of the held portion 25.

  The holding body 35 is formed with a one-side notch 45 (corresponding to a one-side recess) that allows insertion of a part of the one-side flange 28 on the lower surface of the fitting portion 39. The one-side notch 45 is formed in an arc shape in plan view, and is formed at a height that is slightly larger than the thickness t1 of the one-side flange 28. The upper surface of the one-side notch 45 is a one-side holding surface 46 that overlaps the upper collar surface 28a of the one-side collar 28 in the axially upper direction.

  The holding body 35 is formed with an other-side notch 47 (corresponding to the other-side recess) that allows the insertion of a part of the other-side flange 30 in the middle of the fitting portion 39 in the height direction. The other side cutout 47 is formed in an arc shape in plan view, and is formed at a height that is slightly larger than the thickness t <b> 2 of the other side collar 30. The upper and lower surfaces of the other-side notch 47 are other-side holding surfaces 48a and 48b that overlap the upper and lower flange surfaces 30a and 30b of the other-side rod 30 in the vertical direction in the axial direction, respectively.

  The distance L1 from the radial center (axial center) of the support shaft 38 to the radial center of the holding hole 57 is set equal to the distance from the radial center of the support shaft 38 to the center of the holding recess 42.

  The locking means 37 will be described. The locking means 37 is constituted by a ball plunger. The locking means 37 is provided on the holding body 35 and can be fitted into and removed from a locking recess 49 formed on the nozzle mounting surface 56, and the ball 50 is attached to the nozzle mounting surface 56 side. The locking means 37 having such a configuration is embedded in the lower part of the holding body 40 in one place around the support shaft 38 with the ball 50 down. ing. The locking recess 49 is set to a position where the ball 50 is fitted in the fitting posture B of the holding body 35.

  In the above configuration, the supply nozzle 22 is attached to the nozzle attachment surface 56 of the nozzle attachment plate 53 as follows. That is, the holding body 35 is set in the release posture C, the supply nozzle 22 is held with fingers, and the discharge port portion 26 is inserted into the holding hole 57 from above. As a result, the lower surface of the one side collar 28 of the supply nozzle 22 comes into contact with the nozzle mounting surface 56 from above, and the supply nozzle 22 assumes a supply posture A that stands vertically with respect to the nozzle mounting surface 56 (FIGS. 5 and 5). 6, see FIG. 7 (a)).

  Subsequently, the holding body 35 is rotated around the support shaft 38 to rotate from the release posture C to the fitting posture B, and the holding recess 42 (fitting portion 39) is held by the supply nozzle 22. Is fitted from the side. At this time, a part of the one-side flange 28 is inserted into the one-side notch 45, and the height of the holding recess 42 is set to be higher than the height of the held portion 25. Since the side cutout 47 is formed, a part of the other side ridge 30 enters the other side cutout 47 and the curved surface 43 is in the fitting posture B in contact with the outer peripheral surface of the held portion 25 of the supply nozzle 22 ( (Refer FIG.5, FIG.6, FIG.7 (b)).

  In such a state, the one side holding surface 46 overlaps the upper side surface 28a of the one side side 28 with the upper side in the axial direction, and the other side holding surfaces 48a, 48b are on the upper and lower side surfaces 30a, 30b of the other side side 30. Since they overlap each other in the axial direction, the supply nozzle 22 does not escape upward. Furthermore, the one side holding surface 46 overlaps with the upper side surface 28a of the one side rod 28 in the axial direction, and the other side holding surfaces 48a, 48b respectively extend in the axial direction in the upper and lower side surfaces 30a, 30b of the other side rod 30. Even if a radial force is applied to the supply nozzle 22 by the liquid medicine 2 when the liquid medicine 2 passes through the supply channel 31 with respect to the vertical axis that is the axis 33, the supply is performed. It is possible to prevent the nozzle 22 from coming off (fall down) to the opening side of the holding recess 42 and to reliably hold the posture of the supply nozzle 22.

  Further, since the ball 50 in the locking means 37 is urged by the spring 51 and fits into the locking recess 49, the holding body is sufficient as long as the force exceeding the elastic force of the spring 51 does not act around the support shaft 38. 35 does not rotate, and therefore the holding body 35 holds the fitting posture B. In this way, the supply nozzle 22 is reliably supplied by a simple operation of rotating the holding body 35 around the support shaft 38 and bringing the curved surface 43 into contact with the outer peripheral surface of the held portion 25 of the supply nozzle 22. Since it can hold | maintain to A, the supply pipe | tube 29 is easy to attach.

  By performing the operation as described above for each supply nozzle 22 and driving the supply pump 18, one end is inserted into the supply bottle 2 and the other end is externally fitted to the inlet 27 of the supply nozzle 22, and the middle part is supplied. The liquid medicine 2 is introduced from the supply pipe 29 inserted through the pump 18 into the supply path 31 and discharged from the discharge port portion 26 toward the mouth of the liquid medicine bottle 4 that is installed in advance. To be supplied.

  For example, when a required amount of liquid medicine 2 is supplied in one liquid medicine bottle 4, the liquid medicine bottle 4 is replaced, or when the required amount of liquid medicine 2 is insufficient in the replaced liquid medicine bottle 4 Drives the rotation drive unit 17 so that the adjacent supply bottle 3 is located above the liquid medicine bottle 4 (intermittent drive), drives the supply pump 18 corresponding to the adjacent supply bottle 3, The liquid medicine 2 is supplied to the liquid medicine bottle 4.

  When the liquid medicine supply device 1 is used as described above, the surroundings of the supply nozzle 22 may be contaminated with the liquid medicine 2 or the supply nozzle 22 may be replaced. In these maintenances, when the holding body 35 is gripped with fingers and rotated around the support shaft 38 against the elasticity of the spring 51, the ball 50 rides on the locking recess 49 so as to ride on the nozzle mounting surface 56. It moves while sliding.

  Then, when the holding body 35 is rotated around the support shaft 38 so as to be in the release posture C, the upper part of the nozzle mounting surface 56 that has been covered by the holding body 35 until then is opened, so that it is easy. The one side rod 28 and the other side rod 30 are suppressed from above (only upward) by simply rotating the holding body 35 around the support shaft 38 so as to be in the release posture C. Therefore, the supply nozzle 22 can be removed and replaced by simply pulling the supply nozzle 22 upward.

  As described above, operations such as cleaning and replacement or attachment of the supply nozzle 22 can be performed very easily and in a short time by only rotating the support 35 around the support shaft 38.

  In the above embodiment, the extension portion 52 extending so as to extend in the tangential direction with respect to the bending direction of the curved surface 43 is formed on the distal end side of the fitting portion 39. By bending the fitting portion 39 so as to be slightly smaller than the diameter of the fitted portion 25, when the fitting portion 39 is fitted to the fitted portion 25 from the side, due to the elasticity of the curved portion of the extension portion 52, It can also be configured to fit.

  With this configuration, when the holding body 35 is set to the fitting posture B, the holding body 35 and the supply nozzle 22 are integrated by the elastic force of the curved portion of the extension portion 52. The supply posture A of the supply nozzle 22 can be held.

  In the above-described embodiment, the axis of the supply nozzle 22 and the axis of the support shaft 38 are configured to be parallel to each other. However, in some cases, it is not necessary to configure both the axes to be parallel. For example, the present invention can be applied even when the axis of the supply nozzle 22 (nozzle) is inclined with respect to the nozzle mounting surface 53. In short, the holding body 35 is rotated in parallel with the nozzle mounting surface 53 so that the supply nozzle 22 is covered. Any structure may be used as long as it has means for fitting the fitting portion 25 and holding the posture thereof and can easily rotate the holding body 35 against the holding force.

The perspective view from the upper part which shows a part of liquid medicine supply apparatus which shows embodiment of this invention Similarly, a front view showing a part of the liquid medicine supply device Similarly an enlarged front view showing a part of the liquid medicine supply device Similarly an enlarged perspective view from above showing a part of the liquid medicine supply device Similarly, (a) shows the releasing posture of the holding body and (b) shows the fitting posture of the holding body, with the supply nozzle and the holding body as the center. The perspective view similarly drawn from another direction centering on a supply nozzle and a holding body, (a) shows the release posture of a holding body, (b) shows the fitting posture of a holding body Similarly, (a) shows the release posture of the holding body and (b) shows the fitting posture of the holding body. It is the top view similarly drawn centering on a supply nozzle and a holding body

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Liquid medicine supply apparatus, 2 ... Liquid medicine, 18 ... Supply pump, 22 ... Supply nozzle, 25 ... Held part, 26 ... Discharge port part, 27 ... Introduction port part, 28 ... One side bottle, 28a ... Upper bottle Surface, 29 ... Supply pipe, 30 ... Other side rod, 30a, 30b ... Upper and lower collar surfaces, 31 ... Supply path, 35 ... Holding body, 37 ... Locking means, 38 ... Support shaft, 39 ... Fitting portion, 40 ... Holding body main body, 42 ... holding recess, 43 ... curved surface, 45 ... one side notch, 46 ... one side holding surface, 47 ... other side notch, 48a, 48b ... other side holding surface, 49 ... locking recess, 50 ... Ball, 51 ... Spring, 52 ... Extension, 53 ... Nozzle mounting plate, 54 ... Projection, 56 ... Nozzle mounting surface, 57 ... Holding hole, A ... Supply posture, B ... Fitting posture, C ... Release posture

Claims (7)

A water supply pipe inserted into a liquid medicine supply bottle filled with liquid medicine is connected to a nozzle attached to a nozzle mounting portion, and water is discharged from the nozzle to a liquid medicine bottle provided to a patient. A holding mechanism for the nozzle in a medicine supply device,
It is attached to the nozzle attachment portion and is rotatable around the support shaft so as to be rotatable in parallel with the nozzle attachment surface of the nozzle attachment portion. On the other hand, a holding body having a fitting portion that is fitted from the side is provided, and the holding body rotates in one direction around the support shaft from the side with respect to the fitting portion of the nozzle. It is possible to switch between the fitting posture in which the fitting portion is fitted and the release posture in which the fitting with the nozzle is released by rotating in the other direction around the support shaft, and holding the holding posture of the holding body. The nozzle holding mechanism in the liquid medicine supply device characterized by having a means.   The held part of the nozzle is formed in a cylindrical shape, and a discharge port part is formed on one side of the held part in the axial direction to penetrate the nozzle mounting part and discharge the liquid medicine to the liquid medicine bottle. An inlet port to which the liquid medicine supply pipe is connected is formed on the other side of the direction, the nozzle is detachably attached to the nozzle mounting part, and the shaft center of the support shaft is passed through the discharge port part through the nozzle mounting part. The nozzle holding mechanism in the liquid medicine supply device according to claim 1, wherein the axis of the held portion is parallel to the axis of the held portion.   A one-side flange that protrudes radially outward is integrally provided at the boundary between the held portion of the nozzle and the discharge port portion, and the one-side avoidance recess that avoids the one-side flange in the fitting portion The nozzle holding mechanism in the liquid medicine supply device according to claim 2, further comprising a one-side holding surface that overlaps the flange surface of the one-side bottle in the axial direction.   The other side flange that protrudes radially outward is integrally provided at the boundary portion between the held portion of the nozzle and the introduction port portion, and the other side avoidance recess that avoids the other side flange is provided in the fitting portion. The nozzle holding mechanism in the liquid medicine supply device according to claim 3, wherein the other side holding surface is provided so as to overlap the flange surface of the other side bottle in the axial direction.   The nozzle holding mechanism in the liquid medicine supply device according to any one of claims 1 to 4, wherein the fitting portion has a holding recess that is fitted to a fitting portion of the nozzle.   The holding means includes a fitting provided on the holding body and detachable from a recess formed on the nozzle mounting surface, and a spring that biases the fitting toward the nozzle mounting surface. The fitting is in contact with the nozzle mounting surface by the elastic force of the spring in the fitting posture of the holding body, and the recess is set at a position where the fitting tool is fitted in the fitting posture of the holding body. The nozzle holding mechanism in the liquid medicine supply device according to any one of claims 1 to 5.   The nozzle holding mechanism in the liquid medicine supply device according to claim 6, wherein the fitting tool is formed in a spherical shape.

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