JP2015112335A - Infusion pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrict the entire length of an infusion pump and frame when the infusion pump is attached to a pole via the frame.SOLUTION: A recessed part 15 for arranging a frame is formed on the bottom part of a pump body 11, and the depth of the recessed part 15 (the depths of front and rear legs 14a, 14b with respect to their lowermost ends) is made greater than the height of the portion (frame body 20) of the frame 2 arranged on the recessed part 15. Providing the pump body 11 with such a recessed part 15 for frame arrangement, prevents the frame 2 from jutting out from the lowermost ends of the front and rear legs 14a, 14b of the frame 2 (frame body 20) while the infusion pump 1 being attached to the frame 2. Thus, the entire height of the infusion pump 1 and frame 2 with the pump 1 attached thereto can be restricted to the height of the infusion pump 1 itself (the height of the infusion pump 1 from the respect lowermost ends of the front and rear legs 14a, 14b to their tops).

Description

  The present invention relates to an infusion pump used for injecting a medical solution into a body.

  As an infusion pump, there is a finger type (peristaltic type) infusion pump. The finger-type infusion pump, for example, drives each finger forward and backward with respect to the infusion tube in a state where the infusion tube connected to the infusion bag is arranged between the plurality of fingers and the tube holding plate. This is an infusion pump of a type that pumps out an infusion by crushing the infusion tube (see, for example, Patent Documents 1 and 2).

  In such an infusion pump, there are a case where the infusion pump is placed on a stable base and infusion is performed, and an infusion pump is attached to a pole such as a pole stand for infusion.

  When the infusion pump is attached to the pole, for example, as shown in FIG. 13, after attaching the base 202 (with the clamp 230) to the pole P, the legs 211, 211 of the infusion pump 201 are placed on the base 202. The infusion pump 201 is fixed to the gantry 202 using a knob bolt or the like. Alternatively, after the infusion pump 201 is attached on the base 202, the base 202 is attached to the pole P of the pole stand. The infusion pump 201 attached to the pole P in this way may be placed on the base with the base 202 attached, so that four legs 221... 221 are provided at the bottom of the base 202. It has been.

Japanese Patent No. 3595136 JP 2013-006021 A

  In the mounting structure shown in FIG. 13, the legs 211... 211 of the infusion pump 201 are placed on the gantry 202 and the infusion pump 201 is attached to the gantry 202, so that the bottom of the gantry 202 from the top of the infusion pump 201. The overall height up to (the lower end of the leg 221) is increased. Further, in addition to the legs 211... 211 of the infusion pump 201, legs 221.

  The present invention has been made in consideration of such circumstances, and in an infusion pump that can be attached to a gantry, when the infusion pump is attached to the gantry, the overall height of the infusion pump and the gantry is suppressed. The object is to provide a structure capable of.

  The present invention provides an infusion pump in which a front leg and a rear leg are provided at the bottom of the pump body, the bottom of the pump body, and a recess for arranging a gantry is provided between the front leg and the rear leg, The depth with respect to the lowest end of the said front leg and rear leg of a recessed part is larger than the height of the arrangement | positioning part of the said stand to the said recessed part, It is characterized by the above-mentioned.

  According to the present invention, the bottom of the pump body is provided with a recessed portion for mounting the mount, and the depth of the recessed portion (the depth with respect to the lowermost ends of the front legs and the rear legs) is determined by the mounting portion of the mount to the recessed portion (mounting body). Therefore, the gantry (base body) does not protrude below the lowermost ends of the front legs and the rear legs when the infusion pump (pump main body) is attached to the gantry. Thereby, the whole height in the state which attached the infusion pump to the mount frame can be suppressed to the height of the infusion pump itself (the height from the lowest end of the front leg and the rear leg of the infusion pump to the top).

  Moreover, since the gantry does not protrude below the lowest end of the leg of the infusion pump, the leg of the infusion pump can be used as it is even when the gantry is placed on the gantry with the gantry attached. As a result, there is no need to provide legs on the gantry, and the number of parts can be reduced.

  In this invention, it is preferable that the recessed part provided in the bottom part of a pump main body is open | released in the both right and left side surfaces of a pump main body. By opening the left and right sides of the recess in this way, the mounting direction of the gantry with respect to the infusion pump can be set to the left side or the right side, so the infusion pump can be either one of the right side and the left side of the pole such as a pole stand. Can be selectively arranged. In addition, when the infusion pump is attached to the gantry, it becomes possible to insert the gantry (arrangement portion in the recess) into the recess from the lateral direction (slide insertion).

  According to the present invention, the recess for placing the gantry is provided at the bottom of the pump body, and the depth of the recess is larger than the height of the gantry (arrangement part to the recess), so that the infusion pump is attached to the gantry The overall height can be reduced.

FIG. 1A is a front view showing an example of an infusion pump to which the present invention is applied, and FIG. 1B is a right side view of the infusion pump. It is a bottom view of the infusion pump shown in FIG. It is a partial cross section right view of the infusion pump shown in FIG. It is a partial cross-section rear view of the infusion pump shown in FIG. FIG. 5A is a front view of the gantry, and FIG. 5B is a plan view of the gantry. FIG. 6 is a left side view of the gantry shown in FIG. 5. FIG. 6 is a bottom view of the gantry shown in FIG. 5. It is II sectional drawing of FIG. 5 (A). In FIG. 8, the knob bolt is shown without being cut. FIG. 9A is a front view showing a state in which the gantry is attached to the infusion pump, and FIG. 9B is a left side view showing the state in which the gantry is attached to the infusion pump. It is a partial cross section right view shown in the state which attached the mount frame to the infusion pump. It is a partial cross section rear view shown in the state which attached the mount frame to the infusion pump. 12A is a front view when the infusion pump is attached to the right side of the pole, and FIG. 12B is a front view when the infusion pump is attached to the left side of the pole. It is a front view which shows the state which attached the conventional infusion pump to the pole.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  An example of the infusion pump of the present invention will be described with reference to FIGS.

  The infusion pump 1 includes a pump main body 11 and a door 12 that closes the front side (tube attachment position) of the pump main body 11.

  The bottom (bottom) of the pump body 11 is provided with four legs, that is, a pair of left and right front legs 14a and 14a and a pair of left and right rear legs 14b and 14b. The door 12 is swingably (rotatably) supported by the pump body 11 via hinges 13 and 13 (see FIG. 9), from a position where the front side of the pump body 11 is completely closed to a fully opened position. Can swing between the two.

  The pump body 11 is provided with a pump mechanism. The pump mechanism includes, for example, a plurality of fingers arranged in one direction (a direction along the infusion tube), a cam that individually drives the fingers forward and backward (forward and backward drive), and an actuator that applies a driving force to the cams. (For example, an electric motor) or the like, and the front ends of the plurality of fingers face the front side of the pump body 11.

  Further, a tube pressing plate is provided on the inner surface side of the door 12. The tube pressing plate is provided at a position corresponding to the plurality of fingers of the pump mechanism. This tube presser plate is opposed to the distal end surface of the finger in the last retracted position with the door 12 closed, with an interval corresponding to the outer diameter (diameter) of the infusion tube T. ing.

  In the infusion pump 1 of this example, each finger is camped in a state where the infusion tube connected to the infusion bag is set between the plurality of fingers and the tube pressing plate (the door 12 is closed). The infusion tube is sequentially pressed by each finger to send out the infusion solution by individually moving forward and backward.

  In addition, about specific structures, such as a pump mechanism, refer Unexamined-Japanese-Patent No. 2013-070705, Unexamined-Japanese-Patent No. 2013-006021, Unexamined-Japanese-Patent No. 2012-249651, etc., for example.

−Stand−
Next, the gantry 2 used when the infusion pump 1 is attached to a pole (pipe) P such as a pole stand will be described with reference to FIGS.

  The gantry 2 includes a gantry body 20, a clamp 30 provided integrally with the gantry body 20, and a knob bolt 40. The clamp 30 is disposed above the lower end of the gantry body 20.

  The gantry body 20 is a member having a rectangular planar shape, and a stepped through hole 21 is provided at the center. The inner diameter (the inner diameter of the small diameter portion) of the through hole 21 is larger than the outer diameter of the threaded portion 43 of the knob bolt 40 described later. The gantry body 20 is provided with positioning pins 22 and 22 at positions facing each other with the through hole 21 therebetween. Each positioning pin 22, 22 protrudes upward (the pump body 11 side). The centers of these two positioning pins 22 and 22 and the through hole 21 are arranged on a straight line (straight line along the X direction) passing through the center of the gantry body 20.

  A peripheral wall (for reinforcement) 20 a protruding downward from the peripheral edge of the gantry body 20 is integrally formed on the lower side of the gantry body 20. A rib for increasing the rigidity of the gantry body 20 may be formed inside the peripheral wall 20a (lower part of the gantry body 20).

  The clamp 30 includes a clamp body 31, a movable clamp member 32, a feed screw rod 33, and the like.

  The clamp body 31 includes a fixed clamp portion 311 and an arm portion 312 that are opposed to each other at a predetermined interval, and a guide portion 313. The guide portion 313 is a member extending linearly in the X direction, and a fixed clamp portion 311 and an arm portion 312 are integrally formed at both ends thereof. A V-shaped pole receiving portion 311 a is provided on the inner surface of the fixed clamp portion 311 (the surface facing the movable clamp member 32).

  The movable clamp member 32 is disposed to face the fixed clamp portion 311 of the clamp body 31. The movable clamp member 32 is movable in the X direction along the guide portion 313. The movable clamp member 32 is provided with a pair of upper and lower engaging pieces 32a, 32a. The upper and lower engagement pieces 32 a and 32 a are members that restrict the rotation of the movable clamp 32 by contacting the upper surface side or the lower surface side of the guide portion 313. Further, the movable clamp member 32 is provided with a V-shaped pole pressing portion 32b at a portion facing the pole receiving portion 311a of the fixed clamping portion 311.

  The arm portion 312 is provided with a female screw hole 312a. The center of the female screw hole 312a is along a direction (X direction) parallel to the guide portion 313. Further, the center of the female screw hole 312 a substantially coincides with the center position of the movable clamp member 32. A feed screw rod 33 is screwed into the female screw hole 312a. The movable clamp member 32 is rotatably connected to the distal end portion of the feed screw rod 33 (the end portion on the fixed clamp portion 311 side). A rotation knob 33 a is integrally provided at the other end of the feed screw rod 33. Then, by rotating the rotary knob 33a, the movable clamp member 32 moves forward along the guide portion 313 (moves in the direction approaching the fixed clamp portion 311 (X direction)), and rotates the rotary knob 33a in the reverse direction. By operating the movable clamp member 32, the movable clamp member 32 moves backward (moves in a direction (X direction) away from the fixed clamp portion 311). In the forward / backward process of the movable clamp member 32, even if a rotational force is applied to the movable clamp member 32 by the feed screw rod 33, the rotation (rotation of the movable clamp member 32) is performed by the upper and lower engagement pieces 32a and 32a. Since it is regulated, the movable clamp member 32 can move in the X direction without rotating.

  The knob bolt 40 has a head portion 41, a shaft portion 42, and a screw portion 43. The outer diameter of the screw portion 43 is larger than the outer diameter of the shaft portion 42. A shaft portion 42 (screw portion 43) of the knob bolt 40 is inserted into the through hole 21 of the gantry body 20 from below. In the inserted state, a retaining ring 50 is fitted into the shaft portion 42 (see FIG. 8 and the like), and the retaining bolt 50 prevents the knob bolt 40 from falling out of the through hole 21. In FIG. 8 and the like, the knob bolt 40 is shown in a state where it is arranged at the highest position relative to the gantry body 20 (position where the head 41 abuts the lower surface of the gantry body 20).

  When the mount 2 having the above structure is attached to the pole P, the pole P is disposed between the fixed clamp portion 311 of the clamp 30 and the movable clamp member 32 (see FIGS. 5B and 7). The movable clamp member 32 is moved toward the fixed clamp portion 311 by rotating the rotary knob 33 a and screwing the feed screw rod 33. Then, by further tightening the rotary knob 33a (feed screw rod 33) from the state in which the pole receiving portion 311a of the fixed clamp portion 311 and the pole pressing portion 32b of the movable clamp member 32 are in contact with the outer peripheral surface of the pole P. The entire gantry 2 can be fixed to the pole P. Further, when removing the gantry 2 from the pole P, the rotation knob 33a of the clamp 30 may be reversed.

  In the clamp 30 of this example, the fixed clamp portion 311 and the movable clamp member 32 are provided with a V-shaped pole receiving portion 311a and a V-shaped pole holding portion 32b, respectively. The gantry 2 can be attached to a plurality of types of poles P having different diameters.

-Feature part-
Next, the characteristic part of this embodiment is demonstrated with reference to FIGS.

  In the present embodiment, as shown in FIGS. 1 to 4 and FIGS. 9 to 11, the bottom of the pump body 11 and between the front legs 14 a and 14 a and the rear legs 14 b and 14 b, An arrangement recess (mounting unit arrangement recess) 15 is provided.

  The concave portion 15 for mounting the gantry is a rectangular concave portion that is configured by a front side surface 15b, a rear side surface 15c, and a bottom surface (upper surface) 15a, and is open on both left and right side surfaces of the pump body 11. . The front side surface 15b of the recessed part 15 is an inclined surface which inclines outward (front side of the infusion pump 1). The distance between the tangent line between the front side surface 15b and the bottom surface 15a and the tangent line between the rear side surface 15c and the bottom surface 15a is longer than the length between the front surface 20b and the rear surface 20c of the rectangular gantry body 20 described above. The size is larger by a predetermined amount (see FIG. 10).

  In the center of the bottom wall 11a of the pump body 11 where the concave portion 15 is provided, a female screw hole 16 that engages with the screw portion 43 of the knob bolt 40 is provided. The bottom wall 11a of the pump body 11 is provided with positioning holes 17 and 17 that can be fitted to the positioning pins 22 and 22 of the gantry body 20 at positions facing each other with the female screw hole 16 therebetween. Yes. The positioning holes 17 and 17 of the recess 15 and the positioning pins 22 and 22 of the gantry body 20 are provided in a corresponding positional relationship, and each positioning pin 22 can be fitted into the corresponding positioning hole 17. it can. Further, with the positioning pins 22 and 22 of the gantry body 20 fitted in the positioning holes 17 and 17 of the recess 15, the center of the female screw hole 16 of the pump body 11 and the center of the through hole 21 of the gantry body 20 (knob bolt 40 And the center of the threaded portion 43) coincide with each other.

  And in this embodiment, the depth of the recess 15 for mounting the base, that is, the height of the bottom surface (upper surface) 15a of the recess 15 with respect to the lowermost ends of the front legs 14a, 14a and the rear legs 14b, 14b, It is characterized in that it is larger than the height of the gantry body 20 (including the head 41 of the knob bolt 40) of the gantry 2 (see FIG. 10).

  When the infusion pump 1 provided with the recess 15 as described above at the bottom of the pump body 11 is attached to the mount 2, the mount body 20 of the mount 2 is placed on the recess 15 of the pump body 11 on the lower side (or one of the left and right sides). The positioning pins 22 and 22 of the gantry body 20 are fitted into the positioning holes 17 and 17 of the pump body 11. In this state (in a state where the pump body 11 and the gantry body 20 are positioned), the knob bolt 40 on the gantry 2 side is rotated, and the screw portion 43 is screwed into the female screw hole 16 of the pump body 11. The gantry body 20 is fastened.

  The infusion pump 1 may be attached to the gantry 2 in a state where the gantry 2 is not attached to the pole P (a state of the gantry 2 alone), or the gantry 2 is attached to the pole P in the manner described above. It may be performed in a (fixed) state.

<Effect>
As described above, according to the present embodiment, the recessed portion 15 for mounting the gantry is provided at the bottom of the pump body 11, and the depth of the recessed portion 15 (the depth with respect to the lowermost ends of the front legs 14a and 14a and the rear legs 14b and 14b). ) Is made larger than the height of the gantry body 20 (the portion to be disposed in the recess), so that the gantry body 20 has the front legs 14a and 14a and the rear legs when the infusion pump 1 (pump body 11) is attached to the gantry 2. It does not protrude below the lowermost end of 14b, 14b. As a result, the total height of the infusion pump 1 attached to the gantry 2 is adjusted to the height of the infusion pump 1 itself (from the lowermost end to the top of the front legs 14a and 14a and the rear legs 14b and 14b of the infusion pump 1). Height).

  Moreover, since the gantry body 20 (including the clamp 30) disposed in the recess 15 does not protrude below the lowermost ends of the front legs 14a and 14a and the rear legs 14b and 14b of the infusion pump 1, the gantry 2 is attached. Even when the infusion pump 1 is placed on a table, the front legs 14a and 14a and the rear legs 14b and 14b of the infusion pump 1 can be used as they are. As a result, there is no need to provide legs on the gantry 2 and the number of parts can be reduced.

  Furthermore, in this embodiment, since the recessed portion 15 for mounting the gantry is opened on both the left and right side surfaces of the pump body 11, the mounting direction of the gantry 2 with respect to the infusion pump 1 (arrangement of the clamp 30 with respect to the infusion pump 1) is determined. The left or right side of the pump body 11 can be set. Thus, for example, as shown in FIGS. 12A and 12B, the infusion pump 1 can be selectively disposed on either the right side or the left side of the pole P of the pole stand.

  In addition, when a plurality of (for example, two) infusion pumps 1... 1 are attached to one pole stand (pole P), the infusion pumps 1. It becomes possible to do. Thereby, the posture stability of the pole stand can be ensured. It is also possible to avoid interference between the infusion tubes and the infusion bags set in each infusion pump 1.

  Furthermore, in this embodiment, since the front side surface 15b of the recess 15 for mounting the mount is an inclined surface, when the mount body 20 is inserted into the recess 15, the mount main body 20 is attached to the mounting position by the front side (inclined surface) 15b. Be guided to. This also has the effect of improving workability when the infusion pump 1 is attached to the gantry 2.

-Other embodiments-
In the above embodiment, the structure in which the infusion pump 1 is fixed to the gantry 2 using the knob bolt 40 has been described. Instead, the infusion pump 1 may be fixed to the gantry 2 using a one-touch fixing mechanism. Good. As the one-touch fixing mechanism, for example, a fixing pin for connecting and fixing the pump main body 11 and the gantry main body 20 (for example, arranged on the pump main body 11 side), and a engagement that can be engaged with a locking recess provided on the fixing pin. When the base body 20 is fitted into the recess 15 of the pump body 11, provided with a stop pawl (for example, disposed on the base 2 side), a locking spring that presses the locking claw toward the engagement side, and a release lever. A mechanism configured to engage the locking claw with the fixing pin to fix the pump body 11 and the gantry body 20 and to release the engagement of the locking claw from the fixed state by operating the release lever. Can be mentioned.

  INDUSTRIAL APPLICABILITY The present invention can be used for an infusion pump used for injecting medical chemicals into the body, and more specifically, for an infusion pump that can be attached to a pole such as a pole stand via a gantry. Can do.

DESCRIPTION OF SYMBOLS 1 Infusion pump 11 Pump main body 11a Bottom wall 12 Door 14a Front leg 14b Rear leg 15 Recessed part (for mount arrangement)
15a Bottom surface 16 Female screw hole 17 Positioning hole 2 Base 20 Base body 21 Through hole (with step)
22 Locating pin 30 Clamp 40 Knob bolt

Claims (2)

In an infusion pump in which a front leg and a rear leg are provided at the bottom of the pump body,
A recess for arranging a gantry is provided between the front leg and the rear leg at the bottom of the pump body, and the depth of the recess with respect to the lowest end of the front leg and the rear leg is the gantry to the recess. An infusion pump characterized by being larger than the height of the arrangement part. The infusion pump according to claim 1,
2. The infusion pump according to claim 1, wherein the recess is opened on both left and right side surfaces of the pump body.

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