JP2017079824A - Winding device for transfusion tube, and transfusion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding device for a transfusion tube and a transfusion device, which can handle a transfusion tube at a proper length and can buffer an unexpected external force acting on the transfusion tube, and a transfusion device.SOLUTION: A winding device 10 for a transfusion tube 101 to send a transfusion comprises a winding body 30 for winding the transfusion tube 101, and the winding body 30 can wind up and release the transfusion tube 101.SELECTED DRAWING: Figure 2

Description

  TECHNICAL FIELD The present invention relates to an infusion tube winding device and an infusion device used in an infusion device for administering various nutrient solutions, medicines and the like into a patient's body, and transfusing blood.

  In general, in an infusion device, one end of an infusion tube is connected to an infusion bag suspended from an infusion table, a needle provided on the other end of the infusion tube is inserted into a patient's blood vessel, etc. Intravenous infusion.

  The infusion tube constituting the conventional infusion device is elongated in advance for convenience of inspection and the like. Therefore, the infusion tube is too long at times other than the inspection, and is easily entangled. In addition, if an unexpected external force reaches the infusion tube due to the patient inadvertently leaving the infusion table, etc., the needle inserted into the patient's blood vessel or the like may fall out of the blood vessel or damage the blood vessel or tissue around the needle. There was also a fear.

  In the infusion tube holder described in Patent Document 1, by attaching a stopper cradle having several tube stoppers to the drip stand column, the longer middle part of the infusion tube is used as the tube stopper of the stopper cradle. It has been proposed to stop and hold the infusion tube at an appropriate length.

Japanese Utility Model Publication No. 7-33348

  Even in the infusion tube holder described in Patent Document 1, the infusion tube can only be stopped by the tube stopper of the stopper receiving base at the long intermediate portion.

  Therefore, the extra long part of the middle part of the infusion tube is hung around the drip stand column to which the stopper cradle is attached, or it hangs down and eliminates complicated situations. Absent.

  In addition, if an unexpected external force is applied to the infusion tube while the middle part of the infusion tube is stopped by the tube stopper of the stopper cradle or hooked around the drip stand column, the unexpected external force There is no possibility that the infusion tube is pulled out freely, and a buffering function that prevents external force from reaching the needle on the other end of the infusion tube cannot be expected.

  An object of the present invention is to provide an infusion tube winding device and an infusion device that enable the infusion tube to be routed with an appropriate length and that can buffer an unexpected external force acting on the infusion tube.

  The invention according to claim 1 is an infusion tube take-up device for delivering an infusion solution, and has a take-up body for taking up the infusion tube, and the take-up body can take up and draw out the infusion tube. It is intended to become.

  According to a second aspect of the present invention, in the first aspect of the present invention, the winding body enables both the one end side portion and the other end side portion of the infusion tube to be simultaneously wound or pulled out simultaneously. It is a thing.

  According to a third aspect of the present invention, in addition to the first or second aspect of the invention, the winding body may cause the infusion tube to bend the curvature radius of the infusion tube wound around the winding body. It is set to be larger than the minimum critical bending radius.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the winding body always applies a winding force for winding the infusion tube around the winding body to the infusion tube. It has a force applying means.

  The invention according to claim 5 is the invention according to claim 4, wherein the winding body is an infusion tube with a winding force applied by the winding force applying means in a state where no external force is applied to the infusion tube. A winding lock means for preventing winding is provided.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the winding body is wound by the winding force applying means in a state in which the external pulling force applied to the infusion tube is released. The infusion tube is wound by a certain length by force, and then has a winding lock means for preventing the infusion tube from being wound by the winding force applied by the winding force applying means.

  The invention according to claim 7 is an infusion device in which the infusion tube winding device according to any one of claims 1 to 6 is used.

(Claim 1)
(a) The winding body of the winding device enables the infusion tube to be wound and pulled out. Therefore, the length of the infusion tube that has been lengthened in advance for the purpose of inspection or the like is rolled up by the winding body when it is other than the inspection, and is neatly arranged. Can be used. That is, the infusion tube can be routed with an appropriate length.

  In addition, when an unexpected external force acts on the infusion tube due to the patient inadvertently leaving the infusion table, etc., the infusion tube is freely pulled out of the winding body by the unexpected external force, and the external force is a needle on the other end side of the infusion tube. To avoid. There is no possibility that the needle inserted into the blood vessel or the like of the patient will come out of the blood vessel or damage the blood vessel or tissue around the needle. When the unexpected external force disappears, the portion of the infusion tube that is pulled out by the external force is again wound around the winding body. That is, an unexpected external force acting on the infusion tube can be buffered.

(Claim 2)
(b) The winding body enables both the one end side portion and the other end side portion of the infusion tube to be simultaneously wound or pulled out simultaneously. That is, the winding body can simultaneously wind up both ends of the infusion tube by rotating in the winding direction. In addition, the winding body can simultaneously draw out both end portions of the infusion tube by rotating in the drawing direction.

(Claim 3)
(c) In the winding body, the radius of curvature of the infusion tube wound around the winding body is set larger than the minimum critical bending radius that may cause the infusion tube to bend. Therefore, the infusion tube is not likely to be broken and blocked from passing in the bent state wound around the winding body, and can always maintain stable liquid feeding performance.

(Claim 4)
(d) The winding body has a winding force applying means for always applying a winding force for winding the infusion tube around the winding body to the winding tube. Therefore, the infusion tube is always urged in the winding direction by the winding force of the winding force applying means. The infusion tube is pulled out by a pull-out external force applied by the user so as to exceed the above-described winding force, and when the pull-out external force is released, the infusion tube is ready to be wound by the above-described winding force.

(Claim 5)
(e) The winding body has winding lock means for preventing winding of the infusion tube by the winding force applied by the winding force applying means in a state where no external force is applied to the infusion tube.

(Claim 6)
(f) The winding body winds up the infusion tube by a certain length by the winding force applied by the winding force applying means in a state where the drawing external force applied to the infusion tube is released, and then winding the wound tube. Winding lock means for preventing winding of the infusion tube by the winding force applied by the force applying means is provided.

(Claim 7)
(g) In the infusion device, the above (a) to (f) can be realized.

FIG. 1 is a schematic view showing an application example of an infusion device. FIG. 2 is a schematic view showing an embodiment of an infusion tube winding device. FIG. 3 is a schematic view showing a transverse section of the infusion tube loaded in the tube loading groove of the winding body. FIG. 4 is a schematic view showing another example of the infusion tube winding device. FIG. 5 is a schematic diagram showing the winding force applying means. FIG. 6 is an exploded perspective view of the infusion tube winding device. FIG. 7 is a schematic diagram showing the winding lock means. FIG. 8 is a schematic view showing a modified example of the winding body. FIG. 9 is a schematic view showing a modification of the tube loading structure provided in the winding body.

  The infusion device 100 shown in FIG. 1 is connected to an infusion bag 103 in which one end side of an infusion tube 101 is suspended from a drip stand 102, and a needle 104 provided on the other end side of the infusion tube 101 is inserted into a blood vessel or the like of a patient M. Then, the infusion in the infusion bag 103 is infused into the body of the patient M and delivered. Here, the infusion device 100 includes a winding device 10 for the infusion tube 101.

  The infusion tube 101 may be of any material and size, but may be made of, for example, polybutadiene, having an outer diameter of 4.5 mm and an inner diameter of 3.2 mm.

  As shown in FIGS. 2 and 6, the winding device 10 incorporates a disk-shaped winding body 30 in the winding case 20, and the winding body 30 has a winding force applying means 40 and a winding lock. Means 50 are additionally provided.

  The winding case 20 includes a case body 21, a frame body 22 fixed to the case body 21, and a lid body 23 (comprising a lid frame 23A and a lid plate 23B) hinged to the frame body 22. Composed.

  The winding body 30 has a bearing hole 31 fitted on the outer periphery of a support shaft 24 provided at the center of the case main body 21, and the support shaft is supported by a collar 33 attached to an end surface of the support shaft 24 by a set screw 32. 24 is prevented from coming off and pivotally attached to the support shaft 24. By fixing the frame body 22 to the outer peripheral portion on the front side of the case main body 21 in which the winding body 30 is pivotally attached to the support shaft 24, the case main body 21 and the frame body 22 have the outer peripheral portion of the winding body 30 on the front side. The roll 30 is sandwiched from both sides and held in a rotatable state.

  The winding body 30 has a middle portion at the center of the front as a circular middle portion when viewed from the front, and a tube winding portion 35 around the middle and high portions 34. The middle / high portion 34 has a stepped height with respect to the plane of the tube winding portion 35 in the axial direction of the mounting hole 31 by a certain height (generally equivalent to the outer diameter of the infusion tube 101). A tube loading groove 34A having a constant depth (generally equal to the outer diameter of the infusion tube 101) having an S shape passing through two opposing positions and the bearing hole 31 is provided.

  The infusion tube 101 is inserted into the tube loading groove 34A of the middle-high part 34 so as to form an S shape with respect to the winding body 30, and is placed at two positions opposite to each other on the diameter on the outer periphery of the middle-high part 34. One end side portion and the other end side portion of the infusion tube 101 extending from the tube loading groove portion 34 </ b> A to the tube winding portion 35 side are aligned with each other along the outer periphery of the middle / high portion 34 on the tube winding portion 35. It is wound so as to form two spirals. One end side of the infusion tube 101 is drawn upward through a pair of left and right guide rollers 25A, 25B provided on the upper portion of the frame 22 of the winding case 20, and the other end side of the infusion tube 101 is the winding case. The pair of left and right guide rollers 26A and 26B provided at the lower portion of the 20 frame body 22 are drawn downward.

  In the wound body 30, the wound state of the infusion tube 101 loaded in the tube loading groove 34 </ b> A of the middle and high portion 34 and wound on the tube winding section 35 is covered with the case body 21 and the frame body 22. When the body 23 is closed, it is covered and held by the lid body 23. The closed lid body 23 is rotated by a certain small gap between the above-mentioned infusion tube 101 wound around the winding body 30 and the winding body 30 is rotated and the infusion tube 101 is wound / drawn out. Does not give resistance to.

  Thereby, the winding body 30 enables the infusion tube 101 to be wound and pulled out, and the one end side portion and the other end side portion of the infusion tube 101 are simultaneously wound and wound by rotating the winding body 30 in the winding direction. Both the one end side part and the other end side part of the infusion tube 101 can be pulled out simultaneously by the drawing direction rotation of the body 30 (the reverse direction rotation with respect to the winding direction rotation).

  In the winding device 10, FIG. 2 (A) shows the infusion tube 101 at the previous stage wound around the winding body 30, and FIG. 2 (B) shows the infusion tube 101 wound around the winding body 30. Show. The winding device 10 may be wound with the infusion tube 101 on the winding body 3 at the factory production stage, or may be loaded with the infusion tube 101 on the winding body 30 at the use stage in the medical field. good.

  Here, the winding body 30 has a curvature radius r of the infusion tube 101 wound around the winding body 30 as a minimum critical bending radius KR (for example, 15 mm, preferably 15 mm) that may cause the infusion tube 101 to be bent. ~ 25mm) (r> R). In this embodiment, the infusion tube 101 is a portion of the wound body 30 that is loaded into the S-shaped tube loading groove 34A, and the radius of curvature r (FIG. 2B) is set to the minimum value rmin, and this tube loading groove 34A. Is set to be larger than the minimum critical bending radius KR (rmin> R). By setting the radius of curvature rmin of the tube loading groove 34A as close as possible to the minimum critical bending radius KR, while ensuring a stable liquid feeding property by the infusion tube 101, the winding body 30 and the winding device 10 Miniaturization (small diameter) can be realized.

  The tube loading groove 34A shown in FIG. 3A has a groove width w equal to the outer diameter d of the infusion tube 101, but the tube loading groove 34A shown in FIG. Was made shallower than the outer diameter d of the infusion tube 101, and the groove width y was made longer than the outer diameter d of the infusion tube 101. According to the tube loading groove portion 34A of FIG. 3B, the cross section of the infusion tube 101 that is loaded so as to be pushed into the tube loading groove portion 34A and held in the loaded state by the lid 23 is the tube loading groove portion 34A. The minimum critical bending radius KR that causes the infusion tube 101 to be bent can be further reduced, and the winding body 30 and hence the winding device 10 can be reduced in size.

  8A and 8B, the winding body 30 has a tube loading groove 34A provided in the middle and high portion 34 and a groove depth x (x <d) and a groove width shown in FIG. When y (y> d) is formed, there is incidentally a pressing plate 36 that holds the elliptical cross section of the infusion tube 101 loaded so as to be pushed into the tube loading groove 34A. As shown in FIGS. 9A to 9B, the pressing plate 36 is fitted and attached so as to be in close contact with the surface of the middle high portion 34 of the winding body 30. Locking claws 36 </ b> K provided at a plurality of locations on the mating surface of the pressing plate 36 with respect to the surface of the middle / high portion 34 are engaged / disengaged with locking recesses 34 </ b> K provided at corresponding locations on the surface of the middle / high portion 34. The presser plate 36 may be hinged to the middle and high portions 34 of the winding body 30 so as to be openable and closable between a position in close contact with the surface of the middle and high portions 34 and a position spaced from the surface of the middle and high portions 34.

  The pressing plate 36 shown in FIG. 9C includes an S-shaped tube fitting groove 36A that matches the S-shape of the tube loading groove 34A included in the middle-high portion 34 on the mating surface with respect to the surface of the middle-high portion 34. . Further, the bottom shapes of the tube loading groove 34A and the tube fitting groove 36A are made elliptical. As a result, the infusion tube 101 that is sandwiched between the tube loading groove 34A of the middle-high portion 34 and the tube fitting groove 36A of the pressing plate 36 and loaded in both the grooves 34A, 36A follows the elliptic groove bottom. An elliptical cross section is provided and retained.

  The winding body 30 shown in FIG. 9D has an elliptical cross section of the tube-shaped loading groove 34A provided in the middle and high portion 34, and a narrow width portion (in the minor axis direction of the elliptical groove cross section) ( An S-shaped tube loading port 34 </ b> B that opens on the surface of the middle-high portion 34 is provided on the surface of the middle-high portion 34. As a result, the infusion tube 101 is pushed through the tube loading port 34B and loaded into the tube loading groove 34A, and is then surrounded and held by the elliptical groove section of the tube loading groove 34A, giving an elliptical cross section.

  The winding body 30 shown in FIG. 4 includes two strips in which one end side portion and the other end side portion of the infusion tube 101 are along the outer periphery of the middle-high portion 34 on the plane of the tube winding portion 35 and are aligned with each other. Two spiral tube seating concave portions 35A are formed in advance on the upper surface of the tube winding portion 35 so as to be wound in a circular spiral. The tube seating recess 35 </ b> A is formed as a shallow arcuate recess that allows only a portion of the transverse section of the transfusion tube 101 in the circumferential direction to be seated.

  As shown in FIGS. 5 and 6, the take-up body 30 includes a take-up force applying means 40 that always applies a take-up force for winding the infusion tube 101 around the take-up body 30 to the infusion tube 101.

  The winding force applying means 40 includes a mainspring spring case 41 fixed to the back surface of the winding body 30 and arranged around the support shaft 24 of the winding case 20, and a mainspring spring (vortex) inside the mainspring spring case 41. A spring 42 is accommodated. The spring spring 42 is provided so that the inner peripheral end is locked to the support shaft 24 of the winding case 20 and the outer peripheral end is locked to the case inner peripheral portion of the spring spring case 41. The mainspring spring 42 is fixed to the winding body 30 when an external force is applied to the infusion tube 101 wound around the winding body 30 and the winding body 30 is rotated in the pulling direction. It is wound up through and stores elastic energy. The winding force application means 40 uses the urging force resulting from the elastic energy stored by the mainspring spring 42 as a winding direction rotational force (called a winding force) for the winding body 30 and is wound around the winding body 30. The winding force is always applied to the infusion tube 101 so that the infusion tube 101 can be wound.

  As shown in FIGS. 5 to 7, the winding body 30 prevents the infusion tube 101 from being wound by the winding force applied by the winding force applying means 40 in a state where no external force is applied to the infusion tube 101. A winding lock means 50 is provided.

  The winding lock means 50 includes a leaf spring 52 and a ball 53 in a radially extending concave groove 51 provided in a portion of the inner surface of the case body 21 in the winding case 20 facing the back surface of the mainspring spring case 41. Is arranged. The ball 53 is repelled by the leaf spring 52 toward the pull-out direction rotation allowance groove 54A provided on the back surface of the mainspring spring case 41 and the winding direction rotation prevention groove 54B, and the case body 21 extends along the concave groove 51. The groove 51 is accommodated so as to roll in the radial direction.

  The winding lock means 51 rotates the ball 53 in the pulling direction of the spring spring case 41 when an external force is applied to the infusion tube 101 wound around the winding body 30 and the winding body 30 is rotated in the pulling direction. The winding body 30 and the mainspring spring case 41 are continuously rotated in the pulling direction without being blocked by the balls 53 by moving relative to the permissible groove 54A in the positive direction of rotation of the winding body 30 in the pulling direction. The

  When the pull-out external force applied to the infusion tube 101 wound around the winding body 30 is released, the winding lock means 50 causes the winding body 30 to be wound by the winding force applied by the winding force applying means 40. While rotating in the winding direction, the ball 53 moves relative to the pulling-direction rotation allowance groove 54A of the mainspring spring case 41 in the anti-drawing direction by a certain length, and the infusion tube 101 is wound around the winding body 30 by a certain length. . After the infusion tube 101 is wound around the winding body 30 by a certain length, the ball 53 comes into contact with the winding direction rotation prevention groove 54B of the spring spring case 41 in the winding direction. The body 30 and the mainspring spring case 41 are prevented from rotating by the aforementioned abutment between the ball 53 and the winding direction rotation prevention groove 54B, and the winding of the infusion tube 101 by the winding force applied by the winding lock applying means 40 is prevented. To do.

  Therefore, in the infusion device 100, one end side portion (the infusion bag 103 side) and the other end side portion (the needle 104 side) of the infusion tube 101 wound around the winding body 30 in the winding device 10. By applying a pulling external force to one of them, or applying a pulling external force to both of them, both of them can be pulled out from the winding body 30 simultaneously. And when this drawing external force is released, both the one end side portion and the other end side portion of the infusion tube 101 are simultaneously wound on the winding body 30 by a predetermined length by the winding force of the winding force applying means 40B. Thereafter, the take-up lock means 50 prevents the infusion tube 101 from being taken up.

According to the present embodiment, the following operational effects can be obtained.
(a) The winding body 30 of the winding device 10 enables the infusion tube 101 to be wound and pulled out. Therefore, when the infusion tube 101 that has been lengthened in advance for the purpose of inspection or the like is other than the inspection, a portion that is too long is wound around the winding body 30 to be orderly, and at the time of inspection, the infusion tube 101 is pulled out from the winding body 30 for convenience. Can be used in good length. That is, the infusion tube 101 can be routed with an appropriate length.

  Further, when an unexpected external force acts on the infusion tube 101 due to the patient M being carelessly moved away from the infusion table 102, the infusion tube 101 is freely pulled out from the winding body 30 by the unexpected external force, and the external force is extracted from the infusion tube 101. And the like to reach the needle 104 on the other end side. There is no possibility that the needle 104 inserted into the blood vessel or the like of the patient M will come out of the blood vessel or damage the blood vessel or tissue around the needle. When the unexpected external force disappears, the portion of the infusion tube 101 drawn out by the external force is wound around the winding body 30 again. That is, an unexpected external force acting on the infusion tube 101 can be buffered.

  (b) The winding body 30 enables both the one end side portion and the other end side portion of the infusion tube 101 to be simultaneously wound or pulled out simultaneously. That is, the winding body 30 can simultaneously wind up both end portions of the infusion tube 101 by rotating in the winding direction. In addition, the winding body 30 can simultaneously draw out both end portions of the infusion tube 101 by rotating in the pulling direction.

  (c) The winding body 30 is set such that the radius of curvature of the infusion tube 101 wound around the winding body 30 is larger than the minimum critical bending radius KR that may cause the infusion tube 101 to be bent. Therefore, the infusion tube 101 does not have the possibility of breaking and blocking the liquid passage in the bent state wound around the winding body 30, and can always maintain stable liquid feeding performance.

  (d) The winding body 30 has a winding force applying means 40 that always applies a winding force for winding the infusion tube 101 around the winding body 30 to the winding tube. Therefore, the infusion tube 101 is always urged in the winding direction by the winding force of the winding force applying means 40. The infusion tube 101 is pulled out by a pull-out external force applied by the user so as to exceed the above-described winding force, and when the pull-out external force is released, the infusion tube 101 can be wound by the above-described winding force.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention. It is included in the present invention. For example, the method of winding the infusion tube by the winding body is not limited to the above embodiment.

  Further, the winding body does not necessarily require that both the one end side portion and the other end side portion of the infusion tube can be simultaneously wound or pulled out simultaneously. The winding body may be one that can wind or pull out only one of the one end side portion and the other end side portion of the infusion tube.

  Further, the winding body does not necessarily have winding lock means.

  According to the present invention, it is possible to provide an infusion tube winding device and an infusion device that can handle the infusion tube with an appropriate length and can buffer an unexpected external force acting on the infusion tube.

DESCRIPTION OF SYMBOLS 10 Winding device 30 Winding body 40 Winding force provision means 50 Winding lock means 100 Infusion apparatus 101 Infusion tube

Claims (7)

An infusion tube winding device for delivering an infusion solution,
An infusion tube winding device having a winding body for winding an infusion tube, the winding body being capable of winding and drawing out the infusion tube.   2. The infusion tube winding device according to claim 1, wherein the winding body enables both the one end side portion and the other end side portion of the infusion tube to be simultaneously wound or pulled out simultaneously.   The infusion solution according to claim 1 or 2, wherein the winding body has a radius of curvature of an infusion tube wound around the winding body set larger than a minimum danger bending radius that may cause the infusion tube to bend. Tube winding device.   The infusion tube according to any one of claims 1 to 3, wherein the winding body has a winding force applying means for always applying a winding force for winding the infusion tube around the winding body to the infusion tube. Winding device. The winding body is
5. The infusion tube according to claim 4, further comprising winding lock means for preventing winding of the infusion tube by a winding force applied by the winding force applying means in a state where no external force is applied to the infusion tube. Winding device. The winding body is
In a state in which the external force applied to the infusion tube is released, the infusion tube is wound by a certain length by the winding force applied by the winding force applying means, and then the winding force is applied by the winding force applying means. 6. The infusion tube winding device according to claim 5, further comprising winding lock means for preventing winding of the infusion tube by force.   An infusion device using the infusion tube winding device according to claim 1.

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