JP2009254605A - Tubular object holding structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive tubular object holding structure smoothly inserting a tubular body into a blood collection holder, preventing the blood contamination after collecting the blood and exerting superiority in quality management. <P>SOLUTION: A blood collection tube 5 is mounted to a position separated from an opening end 8 by a fixing section 6, its external diameter is formed similar to or larger than the internal diameter of a blood collection holder for preventing horizontal deviation when inserting the blood collection tube 5 into the blood collection holder, and is uniformly and tightly fitted with the blood collection holder having a tapered inner face and a recessed/projecting face so that a projection 7 provided at the fixed section 6 is formed along the chip in a thin and narrow shape. If necessary, this tubular body holding structure 1 is provided with a slit so as to smoothly insert the blood collection tube, make it movable or hold it at a fixed position, and includes a right angle or a sweep-back angle for preventing a kickback and the projection section includes flexibility or elasticity for uniformly dispersing external pressure received from the blood collection holder as the blood collection tube 5 is inserted therein deeper. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

      The present invention relates to a structure for inserting, moving, or holding a first tubular body in a relationship between the first tubular body on the inside and the second tubular body surrounding the outside. A vacuum blood collection tube (hereinafter referred to as a blood collection tube), and the second tubular body is a blood collection holder, and a fixed portion to be attached to or fixed to the blood collection tube and a protrusion are integrated on the outer periphery of the fixed portion. The present invention relates to a tubular body holding structure.

      Regarding the holding in the double pipes having different diameters, a three-point center riser fixed to the inner pipe with a bolt or the like to hold the pressure vessel or the like of Patent Document 1, and in Patent Document 2, a plurality of inner pipes are attached to the inner pipe. Some have spacers to prevent chatter noise, but the inner tube has a tapered shape on the outer surface, and the outer diameter of the open end is larger than the outer diameter of the center, and the outer tube In the relationship that is a blood collection holder having a tapered shape and an uneven surface on the inner surface, a method for inserting, moving, or holding the blood collection tube that becomes an inner tube body without shaking is not disclosed so far.

      Blood collection is universally performed in the field of biological science including medicine, pharmacy, etc., such as testing, diagnosis, treatment, and drug development, but in recent years, a blood collection tube with a vacuum inside the tube has been regularly used for convenience. The blood collection needle attached to the blood collection holder is punctured with a seal of a blood collection tube or a rubber stopper and connected to a blood vessel at the blood collection site.

      In this case, in order to perform blood collection properly, it is extremely important that the blood collection needle first punctures the seal of the blood collection tube or the center point of the rubber stopper. As related to this, as shown in Patent Document 3, there is a structure having a plurality of flexible parts for fixing an opening end of a blood collection tube inside a blood collection holder, and the tip of the blood collection needle is a seal or a rubber stopper. At the time of contact, the purpose of matching the center positions of both is achieved. However, the technique of inserting the blood collection tube straight without causing it to shake is only left to the skill of the blood collection person.

Secondly, when the repulsion force of the rubber stopper or seal of the blood collection tube is strong, the blood collection needle tip cannot puncture the seal or rubber stopper, resulting in a so-called kickback phenomenon that the blood collection tube moves backward and comes off. Proper blood collection may not be performed. As a device for avoiding this, the convex part of the blood collection head shown in Patent Document 4 or the convex part of the rubber stopper and the engaging part of the blood collection holder are engaged, and the blood collection holder shown in Patent Document 5 One that is tightened by a plurality of ribs formed on the inner surface of the body, one that is pressed by a plurality of convex parts or flexible convex parts inside the blood sampling holder shown in Patent Documents 6 and 7, or blood sampling as seen in Patent Document 8 Some holders have two layers of elastic protrusions inside and engage with them, but all of them are basically for the purpose of preventing kickback, and there is absolutely no effect of side runout during insertion. However, as a result, various problems caused by inserting the blood collection needle obliquely cannot be solved. On the other hand, no blood collection tube main body has a kickback prevention structure.
Patent Publication 6-221078 Patent Publication 2004-278556 Patent Publication 7-204180 Patent Publication No. 7-327963 Patent Publication 8-19528 Patent Publication 2000-201908 Patent Publication 2002-291724 Patent Publication 2007-313203

      A tubular body holding structure for inserting, moving and holding a first tubular body in a second tubular body, particularly in a relationship where the first tubular body is a blood collection tube and the second tubular body is a blood collection holder. Since the blood vessel is designed so that the outer diameter of the open end formed for the purpose of sealing to hold the vacuum or the rubber plug for holding the vacuum is larger than the outer diameter of the central portion of the blood collection tube, Is inserted into the blood collection holder and the side of the blood collection holder is swayed. As a result, the blood collection needle is punctured obliquely from the center of the seal or rubber stopper. As a result, a slight gap is created in the contact surface between the blood collection needle and the seal or rubber stopper, and the degree of vacuum inside the blood collection tube is lowered by the flow of external air, so that a specified amount of blood can be collected. It is possible that nothing will happen. In addition, the blood collection needle is bent because it punctures diagonally, and when the blood collection needle is removed after blood collection, the tip is shaken by reaction force, and a small amount of blood is scattered on the upper surface of the seal or rubber stopper or the inner surface of the blood collection tube holder. In recent years, there has been a strong demand for eliminating blood splattering from the viewpoint of bacterial and viral infections, and it is necessary to resolve it quickly.

      In addition, with regard to the kickback, in the device shown in the background art section, it is prevented by the mutual effect or engagement between the convex structure inside the blood collection holder and the external tightening pressure. Since the outer diameter of the blood collection head or rubber plug is large, excessive force and operation are required when inserting or removing from the blood collection holder, causing pain to the blood sample subject to which the blood collection needle has been punctured There is concern about the safety problem of accidentally penetrating blood vessels. Conversely, if insertion or removal of the blood collection tube is facilitated, it is assumed that the frequency of kickback will increase, and in order to avoid this, the blood sampler should be pressed without releasing his hand during blood collection. There is annoyance that must be solved and needs to be resolved.

      Furthermore, as can be seen from Patent Documents 4 to 8, since the blood collection holders are variously devised in the prior art, there is a problem of high cost due to structural complexity and an increase in the number of parts and manufacturing processes. In addition, quality control in manufacturing becomes complicated.

      In view of the above-described state of the art, the object of the present invention is to provide a blood collection holder for any blood collection tube such as a taper or a deformed tube with a seal or rubber stopper provided at the open end of the blood collection tube. It is an object of the present invention to provide a tubular body holding structure for blood collection tubes that can be inserted straight without being swayed in the inside thereof, that the blood collection tube can be smoothly inserted, moved, or removed, and that kickback is prevented.

      In both Patent Documents 1 and 2, both the inner pipe and the outer pipe of the double pipe are straight pipes, and the center riser or the spacer and the inner face of the outer pipe are in contact with each other by a line or a surface in order to resist a large force. Therefore, it cannot be moved with a pressure equivalent to the pressure of a human finger, and is not flexible enough, so there is a tubular body with a tapered shape on the outside of the inner tube or the inside of the outer tube or uneven ribs. It becomes difficult to apply the tubular body or the like to be moved or held at a fixed position.

      The present invention is a blood collection tube having a structure in which the opening end is sealed with a seal or a rubber plug as the first tubular body, and in the relationship of being a blood collection holder having a tapered inner surface and a convex rib as the second tubular body, Blood collection provided with a protrusion along the outer periphery of a fixed portion that is mounted or fixed at a distance from the opening end of the blood collection tube in order to maintain a fixed position while smoothly inserting, moving or removing the blood collection tube It is a tubular body holding structure for a tube.

      In still another specific aspect of the tubular body holding structure for a blood collection tube according to the present invention, when the blood collection tube is inserted into a blood collection holder having a convex rib on the inner surface, there is a gap between the blood collection tube and the uneven inner surface of the blood collection holder. In order to prevent this, the outer diameter of the tubular body holding structure is formed to be equal to or greater than the inner diameter of the blood collection holder.

      In still another specific aspect of the tubular body holding structure for a blood collection tube according to the present invention, the projected portion is formed to be thin or thin along the tip in order to have uniform adhesion to the inner surface of the blood collection holder. ing.

      In still another specific aspect of the tubular body holding structure for a blood collection tube according to the present invention, when the blood collection tube is inserted into the blood collection holder, the taper of the inner surface of the blood collection holder narrows the inner diameter from the opening end toward the blood collection needle joint. In order to uniformly disperse the external pressure that becomes relatively high according to the above, the projecting portion is formed of a flexible or elastic material.

      The tubular body holding structure for a blood collection tube according to the present invention has a concentric ring shape that is mounted or fixed at an appropriate position from the open end of the blood collection tube, and its outer diameter is equal to or larger than the inner diameter of the blood collection holder. Since the inner surface of the blood collection holder is in contact with the open end of the blood collection tube or the outside of the rubber stopper at the two ends of the protrusion configured on the tubular body holding structure, there is no gap or rattling, and the blood collection tube There is no side shake when inserting.

      As described in the previous section, since the blood collection tube to which the tubular body holding structure according to the present invention is attached or fixed can be inserted straight without being swayed, the blood collection needle joined to the center position of the blood collection holder is curved. Without this, the seal or rubber stopper can be punctured with a minimum pressure.

      Further, as described in the previous section, since the blood collection needle does not bend, there is no gap on the contact surface with the seal or the rubber plug, so there is no inflow of outside air, and the degree of vacuum in the blood collection tube does not decrease.

      Further, when the blood collection needle is removed from the blood collection tube, there is no reaction caused by the curvature of the blood collection needle, so that the blood is not scattered on the seal, the rubber stopper or the inner surface of the blood collection holder, and the blood sampler and the blood collection environment are not contaminated.

      Since the blood collection holder narrows in a tapered shape from the open end toward the blood collection needle joint, the tip of the protrusion of the tubular body holding structure according to the present invention is located on the inner surface of the blood collection holder as the blood collection tube is inserted to a fixed position. Since it is deformable or elastically deformed and the reverse warpage becomes large, the kickback force can be resisted and the blood collection tube does not leave.

      On the other hand, the tubular body holding structure according to the present invention has a remarkably large area in contact with the blood collection tube on the inner surface of the fixed portion constituting the tip of the projection in contact with the blood collection tube holder. The force does not move or drop with a force of the kickback level, and if necessary, the effect is further enhanced by inserting and fixing a groove such as a concave shape or a V shape along the outer circumference of the blood collection tube.

      Since the tubular body holding structure according to the present invention has a simple shape, quality control in manufacturing is easy and can be provided at an extremely low cost.

      Hereinafter, the present invention will be clarified by describing specific structures and embodiments of the present invention with reference to the drawings.

      FIG. 1 is a cross-sectional view in which the tubular body holding structure according to the present invention is mounted or fixed on the outside of the first tubular body or mounted or fixed on the inside of the second tubular body in the relationship between the first tubular body and the second tubular body. FIG. 2 is a cross-sectional view of a blood collection tube to which a typical tubular body holding structure according to the present invention is attached or fixed. FIGS. 3, 4, 5, 6, 7 and 8 are FIG. 9 is a top view and a side cross-sectional view of a tubular body holding structure having different shapes, FIG. 9 is an enlarged cross-sectional view of a mounting or fixing portion of the tubular body holding structure and a blood collection tube, and FIG. 10 is a tubular body according to the present invention. A blood collection set sectional view containing a body holding structure is shown.

      The tubular body holding structure 1 according to the present invention is attached or fixed to the outer surface of the first tubular body 2 on the inner side shown in FIG. 1 (a) or the second tubular body 3 on the outer side shown in FIG. 1 (b). The first tubular body 2 is inserted or moved or held by being attached or fixed to the inner surface. In (a), the outer diameter is the same as the inner diameter of the portion in contact with the second tubular body 3. In (b), the inner diameter is equal to or smaller than the outer diameter of the first tubular body 2.

      In the relationship where the first tubular body 2 is the blood collection tube 5 and the second tubular body 3 is the blood collection holder 18, the tubular body holding structure 1 according to the present invention includes the fixing portion 6 having the mounting or fixing surface 10 and the fixing portion 6 thereof. The ring-shaped shape is provided with a protrusion that is in contact with the inner surface of the blood collection holder 18 on the outer periphery and for inserting, moving, or holding the blood collection tube 5. 7 is most desirable, but it may be shaped like the conical protrusion 13 of Example 2, the line-shaped protrusion 14 of Example 3, or the bellows-shaped protrusion 15 of Example 4.

      The protrusion 1, the protrusion 7, or the protrusions 15 to 17 configured in the tubular body holding structure 1 according to the present invention may be directly formed on the outer periphery of the blood collection tube 5.

      In the relationship between the blood collection tube 5 and the blood collection holder 18, it is important that the blood collection tube 5 is inserted straight, so that the protrusion represented by the tubular body holding structure 7 according to the present invention is formed on the blood collection holder 18. It is necessary to make contact with the inner surface at least at three points. Preferably, in order to make the central axis coincide, it is necessary to make contact with the convex ribs 19 formed inside the blood collection holder 18 at the same number, at least an integral multiple, or at the entire circumference. desirable.

      The shape of the protrusion of the representative example 1 configured in the tubular body holding structure 1 according to the present invention is along the tip as shown in FIG. 4 (b) cut along AA 'in FIG. 4 (a). Although the fin type is thinly formed, it may have a receding angle as shown by the protrusion 7b in FIG. 4C in order to facilitate insertion and enhance the kickback prevention effect.

      The shape of the protrusion formed in the tubular body holding structure 1 according to the present invention may be a simple fin-type protrusion 7 as shown in FIGS. 3 and 4, but the inner surface taper or convex rib of the blood collection holder 18. In order to cope with the uneven surface state including 19 or to absorb and equalize the fluctuation in the inner diameter difference between the outer diameter of the blood collection tube 5 and the blood collection holder 18 when the rigidity is high and elastic deformation is difficult. A slit 12 may be provided. The fin-shaped protrusion 7 may have a single layer structure or a multilayer structure.

      The tubular body holding structure 1 for blood collection according to the present invention is inserted 0.3 to 2 times from the opening end 5a to the outer diameter of the opening end 5a in order to insert the blood collection tube 5 into the blood collection holder 18 without lateral shaking. It is preferably 0.85 to 1.7 times, and most preferably 1 to 1.4 times.

      The protrusions configured in the tubular body holding structure 1 for blood collection tubes according to the present invention include the fin-type protrusion 7 of the representative protrusion example 1 and the conical protrusion of the protrusion example 2 shown in FIGS. 13 having a flexible structure such that the tip has a reverse warp deformation, or a linear protrusion 14 in the protrusion example 3 or a bellows protrusion 15 in the protrusion example 4 against external pressure. An elastic structure that is recessed toward the fixed portion 6 may be used.

      5 having the slits of the fin-shaped protrusion, or the conical protrusion 13 of the protrusion example 2 shown in FIG. 6, the line-shaped protrusion 14 of the protrusion example 3, or the bellows protrusion of the protrusion example 4. Since the protrusions 15 and the like are independent from each other, when the blood collection tube 5 is inserted into the blood collection holder 18, it is easy to disperse against different pressures received from the inner surface or the convex ribs 19, and the insertion and removal operations Is smooth, and the holding force in the blood collection holder 18 is strong and the effect of preventing kickback is high.

      On the other hand, in order to prevent the tubular body holding structure 1 according to the present invention attached or fixed to the blood collection tube 5 from being displaced or detached by the force of insertion, movement, removal, kickback or the like, the inner diameter of the fixing portion 6 Is equal to or less than the outer diameter of the blood collection tube 5, but if necessary, a concave groove 16 or a V-shaped groove 17 is formed along the outer circumference of the blood collection tube 5. The effect is further enhanced by fixing with various adhesives such as a room temperature curing type, a heat reaction type, or a dehydration condensation type.

      As for the material of the tubular body holding structure 1 according to the present invention, it is attached or fixed to the blood collection tube 5 and is inserted, moved and held in the blood collection tube holder 18 without hindrance, and kickback can be performed without causing lateral vibration. In order to prevent this, the fin-shaped protrusion 7 and the conical-shaped protrusion 13 are made of synthetic resin such as flexible natural and various artificial rubbers, polyethylene, polypropylene, polyurethane, polyester, vinyl chloride, nylon, Teflon (registered trademark), etc. In addition, the line-shaped protrusion 14 or the bellows-shaped protrusion 15 needs to have appropriate rigidity and flexibility, and therefore is formed of the organic polymer, the elastic metal thin plate, the single body or the composite of the wire, and the like. can do.

      In particular, the tubular body holding structure 1 according to the present invention is made of polyethylene in order to maximize the functions described in claims 1 to 6 and to take into account the ease of production, cost reduction, global environment, resources, and the like. It is preferable.

      FIG. 1 shows a relationship between a first tubular body 2 on the inner side and a second tubular body 3 surrounding the outer side, and the tubular body holding structure 1 according to the present invention is attached or fixed to the first tubular body in the lower direction of the drawing. It shows that it is inserted from and is held in place.

      FIG. 10 shows that the first tubular body 2 is a blood collection tube 5 and the second tubular body 3 is a blood collection holder 18, and the tubular body holding structure 1 according to the present invention is attached to or fixed to the blood collection tube 5. The blood collection sets inserted into the blood collection holder 18 are shown in the assumed examples in which the tips of the protrusions configured in the tubular holding structure 1 can be uniformly bent backward in the insertion direction to prevent kickback. is there.

      Not only blood collection tubes, but also the illustration board can be attached to the wall surface, moved back and forth, and held, or the liquid supply tool to the infusion set can be inserted, moved, or placed at a fixed position without causing the structure to sway in the center. There are a variety of possibilities, such as the use to hold or fix to.

(A) is a 1st tubular body, (b) is a tubular body holding structure sectional drawing concerning this invention with which the 2nd tubular body was mounted | worn. A sectional view of a vacuum blood collection tube to which a tubular body holding structure according to the present invention is attached or fixed. 1 is an external view of a tubular body holding structure example 1 according to the present invention. FIG. (A) is a top view of a tubular body holding structure example 1 according to the present invention, and (b) and (c) are cross-sectional views cut along AA ′. (A) is a top view of a slit-containing tubular body holding structure example 1 according to the present invention. (A) is a top view of a tubular body holding structure example 2 according to the present invention, and (b) is a cross-sectional view cut along BB ′. (A) is a top view of a tubular body holding structure example 3 according to the present invention, and (b) is a cross-sectional view cut along CC ′. (A) is a tubular body holding structure example 4 top view according to the present invention. (A) And (b) is a tubular body holding structure attachment site | part expanded sectional view concerning this invention. Sectional drawing of the vacuum blood collection set containing the tubular body holding structure concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Tubular body holding | maintenance structure 2 1st tubular body 3 2nd tubular body 4 The blood-collecting tube which mounted | wore or fixed the tubular body holding structure 5 Blood-collecting blood vessel 5a Open end 5b Sealing end 6 Fixing part 7 Fin-type protrusion 7a Straight shape Fin type protrusion 7b Fin type protrusion having a receding angle 8 Seal 9 Seal film 10 Mounting or fixing surface 11 Upper surface of tubular body holding structure 12 Slit 13 Conical protrusion 14 Linear protrusion 15 Bellows protrusion 16 Concave shape Groove 17 V-shaped groove 18 Blood collection holder 19 Internal convex rib 20 Blood collection needle rubber sleeve 21 Blood collection needle 22 Blood collection needle joint

Claims (6)

    It is integrated with the outer periphery of the fixing part so that it can be inserted and moved in the fixing part to be attached or fixed to the outer surface of the inner first tubular body and the outer second tubular body surrounding the first tubular body and the position can be kept constant. And a fixing portion that is mounted on or fixed to the inner surface of the second tubular body on the outside and the fixing portion so that the first tubular body can be inserted and moved and can maintain a constant position. A tubular body holding structure comprising a protrusion provided integrally with the inner periphery of the tubular body holding structure.     The tubular body holding structure according to claim 1, wherein the first tubular body is a vacuum blood collection tube, and the second tubular body is a blood collection holder.     3. The tubular body holding structure according to claim 1, wherein the number of the tubular body holding structures attached to or fixed to the first tubular body or the second tubular body is one or more.     The outer diameter of the tubular body holding structure attached to or fixed to the outer surface of the first tubular body is equal to or greater than the inner diameter of the second tubular body, or is attached to or fixed to the inner surface of the second tubular body. The tubular body holding structure according to claim 1, wherein an inner diameter of the tubular body holding structure is equal to or less than an outer diameter of the first tubular body.     The shape of the protrusion provided integrally with the fixing portion that is attached to or fixed to the first tubular body or the second tubular body is thin or thin along the tip. The tubular body holding structure according to 1.     The protrusion provided integrally with the fixing portion that is mounted on or fixed to the first tubular body or the second tubular body has flexibility or elasticity. Tubular body holding structure.

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