JP2011218157A - Auxiliary tool for adjusting pressure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an auxiliary tool for adjusting pressure capable of applying negative pressure to spaces at two positions at the same time.SOLUTION: The auxiliary tool 1 for adjusting pressure has the first tubular part 10, the first connecting part 20 arranged at one end side of the first tubular part 10 and capable of being connected to an air suction device, branched tubular parts 30 whose proximal end sides are connected to the other end side of the first tubular part 10 and whose distal end sides are branched, and a pair of the second connecting parts 40 arranged at the respective distal end sides of the branched tubular parts 30 and capable of being connected to objects to be sucked. The auxiliary tool 1 for adjusting pressure allows air to pass from the branched tubular part 30 sides to the first tubular part 10 side and preferably has an one-way valve for blocking the flowing of air from the first tubular part side 10 side to the branched tubular part 30 sides.

Description

  The present invention relates to a pressure adjustment aid.

  The present applicant previously has a blood storage part for storing blood collected from the subject, a component storage part for storing at least a part of the blood stored in the blood storage part, and these blood storages. And a blood component separation / accommodation device that includes a connection part that aseptically connects the part and the component storage part (see Patent Document 1). According to this blood component separation and storage device, it is possible to aseptically separate and store a predetermined blood component such as serum in a closed system from blood collected from a subject.

JP 2009-50696 A

In the blood component separation and storage device described above, the blood storage part has a flexibility and a blood storage container to which a blood collection tube is connected, and the blood storage container so as to form a pressure adjustment space between the blood storage container and the blood storage container. And a cap capable of sealing the blood storage container and the storage container.
The collection of blood into the blood reservoir is performed, for example, according to the following procedure.

First, the path of the blood collection tube is closed with a clamp or the like. Next, air in the internal space of the blood storage container is sucked and air in the pressure adjustment space is sucked. Thereby, negative pressure is respectively added to the internal space and the pressure adjustment space of the blood storage container. Here, since a pressure difference does not occur between the internal space of the blood storage container and the pressure adjustment space, the flexible blood storage container does not deform even if a negative pressure is applied to the internal space of the blood storage container. (Doesn't collapse).
In this state, the blood collection tube is opened after the blood collection needle is inserted into the subject. Then, the blood collected from the blood collection needle by the negative pressure in the internal space of the blood storage container is strongly sucked toward the blood storage container and introduced into the blood storage container.

  According to the above procedure, since the blood storage container is not crushed in the process of collecting blood, the blood collection volume can be accurately grasped when a scale indicating the blood collection volume is attached to the blood storage container.

  By the way, in the above procedure, when negative pressure is applied to the internal space of the blood storage container and the pressure adjustment space, a tube whose one end communicates with the internal space of the blood storage container and a tube whose one end communicates with the pressure adjustment space. Syringes are connected to the other end of each of these, and air in the internal space of the blood storage container and air in the pressure adjustment space are sucked by these syringes. Thus, it was very troublesome to separately apply negative pressure to two spaces using two syringes. Moreover, since two syringes are used, it was difficult to apply negative pressure to two spaces simultaneously.

  Accordingly, an object of the present invention is to provide a pressure adjusting auxiliary tool that can simultaneously apply a negative pressure to two spaces.

  The present invention provides a first tubular portion, a first connecting portion provided on one end side of the first tubular portion and connectable to an air suction device, and a proximal end side connected to the other end side of the first tubular portion. The present invention relates to a pressure adjusting auxiliary device comprising: a branched tubular portion whose side is branched; and a pair of second connecting portions that are provided on the distal ends of the branched tubular portions and are connectable to suction objects.

  Further, the pressure adjusting aid is provided in the vicinity of the connecting portion between the first tubular portion and the branched tubular portion, and allows air to flow from the branched tubular portion side to the first tubular portion side, and It is preferable to further include a one-way valve that blocks air flow from the first tubular portion side to the branched tubular portion side.

  Moreover, it is preferable that the said 1st tubular part and the said branched tubular part are respectively comprised by the tube which has flexibility.

  In addition, the pair of second connection portions includes a connection portion main body that can be inserted into a connection portion of the suction object with the second connection portion, and an outer surface of the connection portion that is disposed outside the connection portion main body. It is preferable to include a nut portion that can be fitted or fitted.

  Moreover, it is preferable that the said nut part is comprised so that a slide in the longitudinal direction of the said connection part main body is possible.

  Moreover, it is preferable that the said nut part is comprised rotatably in the circumferential direction with respect to the said connection part main body.

  According to the auxiliary tool for pressure adjustment of the present invention, negative pressure can be simultaneously applied to two spaces.

It is a perspective view which shows one Embodiment of the auxiliary tool for pressure adjustment of this invention. It is a top view which shows the auxiliary tool for pressure adjustment shown in FIG. It is a front view which shows the auxiliary tool for pressure adjustment shown in FIG. FIG. 4 is a sectional view taken along line AA in FIG. It is a figure which shows the other form of a one-way valve. It is a perspective view which shows an example of the use condition of the auxiliary tool for pressure adjustment. It is a perspective view which shows the other example of the use condition of the auxiliary tool for pressure adjustment.

Hereinafter, a preferred embodiment of the pressure adjusting aid of the present invention will be described with reference to the drawings.
The pressure adjusting auxiliary tool 1 of the present embodiment is used when, for example, an air suction device such as a syringe is used to suck air from two spaces and adjust the pressure in these two spaces. . As shown in FIGS. 1 to 3, the pressure adjusting auxiliary tool 1 includes a first tubular portion 10, a first connecting portion 20, a branched tubular portion 30, a pair of second connecting portions 40, and a one-way valve. 50, and is configured in a substantially Y shape.

The 1st tubular part 10 is comprised by the transparent tube of the predetermined internal diameter which has flexibility.
The first connection part 20 is connected to one end side of the first tubular part 10. This 1st connection part 20 consists of a transparent member comprised by hard resin, such as polyethylene and a polypropylene, in the cylinder shape. The outer diameter of one end side of the first connection part 20 is configured to be substantially equal to the inner diameter of the first tubular part 10. The first connection portion 20 and the first tubular portion 10 are connected by inserting one end side of the first connection portion 20 into one end side of the first tubular portion 10.

  The outer diameter and inner diameter on the other end side of the first connection portion 20 are configured to be larger than the outer diameter and inner diameter on the one end side of the first connection portion 20. Specifically, the inner diameter of the other end side of the first connection portion 20 is configured to be about 2 mm to 5 mm, and the distal end side of a syringe as an air suction device can be inserted. Further, a thread is formed on the outer peripheral surface on the other end side of the first connection portion 20.

The branched tubular portion 30 is branched into two at the tip side. The proximal end side of the branched tubular portion 30 is connected to the other end side of the first tubular portion 10 via a one-way valve 50. The lengths of the branched portions on the distal end side of the branched tubular portion 30 are substantially equal.
The branch tubular portion 30 is configured by a transparent tube having a predetermined inner diameter having flexibility.

  The pair of second connection portions 40 is connected to the distal end side of the branch tubular portion 30, respectively. Each of the pair of second connection portions 40 includes a connection portion main body 41 and a nut portion 42 disposed on the outer peripheral surface side of the connection portion main body 41.

The connection part main body 41 is comprised by the cylinder shape, as shown in FIG. The outer diameter on one end side of the connection portion main body 41 is configured to be substantially equal to the inner diameter on the distal end side of the branched tubular portion 30. And the connection part main body 41 and the branch tubular part 30 are connected by inserting one end side of the connection part main body 41 into the front end side of the branch tubular part 30.
The outer diameter on the other end side of the connection portion main body 41 is configured to be approximately equal to the outer diameter on one end side of the connection portion main body 41. The other end side of the connection portion main body 41 is inserted into a connection member (for example, a connection member having the same configuration as the first connection portion 20) provided on the suction object, and is connected to the suction object.
A reduced-diameter portion 411 having a predetermined width in the longitudinal direction and a reduced outer diameter is formed on the outer peripheral surface at the central portion in the longitudinal direction of the connection portion main body 41.

  The nut portion 42 is configured in a cylindrical shape having an inner diameter larger than the outer diameter of the connection portion main body 41. On the inner surface of the nut portion 42, a protruding portion 421 and a thread groove 422 are formed. The protruding portion 421 is provided on the proximal end side of the inner surface of the nut portion 42 and is engaged with the reduced diameter portion 411 of the connecting portion main body 41. The thread groove 422 is provided on the front end side of the inner surface of the nut portion 42.

The nut portion 42 described above is slidable in the longitudinal direction of the connection portion main body 41 within a range where the reduced diameter portion 411 is provided. Further, in the case where the thread portion is provided on the outer surface of the connection member provided on the suction target object, the nut portion 42 is screwed into the screw groove 422 of the connection member, thereby the second portion. The connection between the connection unit 40 and the connection object can be made more reliable.
The nut portion 42 is disposed on the outer peripheral surface side of the reduced diameter portion 411 of the connection portion main body 41 and is attached to the connection portion main body 41 so as to be rotatable in the circumferential direction. Thereby, when connecting the nut part 42 and a connection target object by screwing, the nut part 42 can freely rotate. Therefore, even if the nut portion 42 is rotated, the pressure adjusting auxiliary tool 1 including the connecting portion main body 41 is not rotated and twisted, and a safe and reliable connection operation is possible.
Each of the connection portion main body 41 and the nut portion 42 is configured as a transparent member by a hard resin such as polyethylene or polypropylene.

  On the other hand, as shown in FIG. 4, the valve 50 is connected to the first case 51 connected to the other end side of the first tubular portion 10 and to the proximal end side of the branch tubular portion 30 and is connected to the first case 51. A second case 52, and a valve body 53 disposed inside the first case 51 and the second case 52.

The first case 51 includes a tubular first insertion part 511 whose one end is inserted into the first tubular part 10, and a first connection part 512 provided on the other end side of the first insertion part 511.
The second case 52 includes a tubular second insertion portion 521 whose one end is inserted into the branched tubular portion 30, and a second connection portion 522 provided on the other end side of the second insertion portion 521.
The outer diameter of the first connecting portion 512 opposite to the first insertion portion 511 side is configured to be substantially equal to the inner diameter of the second connecting portion 522 opposite to the second insertion portion 521 side. . In addition, irregularities having shapes corresponding to each other are formed on the outer peripheral surface of the first connecting portion 512 and the inner peripheral surface of the second connecting portion 522, and the first connecting portion 512 and the second connecting portion 522 are mutually connected. It is rotatably connected in the circumferential direction. Thereby, for example, when connecting the first connecting part 20 and the syringe, even if a force that rotates in the circumferential direction is applied to the first connecting part 20 and the first tubular part 10, the syringe rotates in the circumferential direction. The force can be prevented from reaching the branch tubular portion 30 and the pair of second connection portions 40. Therefore, even if the first connection portion 20 side is rotated, the entire pressure adjustment auxiliary tool 1 including the connection portion main body 41 is not rotated and twisted, and a safe and reliable connection operation is possible.

  The valve body 53 is made of an elastic member such as rubber and is disposed on the inner surface side of the first connecting portion 512 of the first case 51. One end side of the valve body 53 is fitted to the inner peripheral surface of the first connecting portion 512, and the other end side protrudes toward the first tubular portion 10 side. A slit (not shown) is formed at the protruding end of the valve body 53 on the first tubular portion 10 side.

According to the one-way valve 50 described above, when air is sucked from the first connection portion 20 side, the slit of the valve element 53 is opened by the suction force acting on the first connection portion 20 side inside the first tubular portion 10. To do. Thereby, air flows through the inside of the branch tubular portion 30 and the inside of the first tubular portion 10 from the pair of second connection portions 40 toward the first connection portion 20.
On the other hand, when the suction of air from the first connection portion 20 side is stopped, the slit of the valve body 53 is closed, so that no air flows from the first connection portion 20 side to the pair of second connection portions 40 side.

In the present invention, the one-way valve 50 is preferably configured such that the valve can be opened and closed by the fluctuation of the internal air pressure, and the air can flow only in one direction, and the structure is not particularly limited. Known techniques can be employed.
In the present embodiment, the valve structure including the above-described so-called “duck bill type” valve element 53 is shown as the one-way valve 50, but is not limited thereto. For example, as shown in FIG. 5, a handle 531A and an umbrella 532A disposed at one end of the handle 531A are provided, and air can flow only from the handle 531A to the umbrella 532A. A one-way valve 50A including a so-called “umbrella-type” valve body 53A may be used.

  Next, a method of using the pressure adjusting auxiliary tool 1 will be described with reference to FIG. FIG. 6 is a perspective view showing a state where the pressure is reduced by sucking air from the blood collection device 100 as the suction object using the syringe 60 as the air suction device, using the pressure adjusting auxiliary tool 1.

  As shown in FIG. 6, the blood collection device 100 as an object to be aspirated has a flexible blood storage container 71 to which a blood collection tube 110 is connected and a pressure adjustment space between the blood storage container 71. A hard storage container 72 that stores the blood storage container 71 and a cap 73 that can seal the blood storage container 71 and the storage container 72 are provided. Connected to the cap 73 are a tube 120 communicating with the internal space of the blood storage container 71 and a tube 130 communicating with the pressure adjustment space.

The pressure adjustment assisting tool 1 is used when blood is collected from a subject by the blood collection device 100.
First, one of the pair of second connection portions 40 of the pressure adjusting auxiliary tool 1 is connected to the tube 120 and the other is connected to the tube 130. Here, connecting members 121 and 131 each having a thread formed on the outer peripheral surface thereof are connected to the distal end of the tube 120 and the distal end of the tube 130, respectively, and the pair of second connecting portions 40 includes these connecting members. Connected to the tubes 120 and 130 via 121 and 131. More specifically, in the pair of second connection portions 40, the connection portion main body 41 is inserted into the connection members 121 and 131, respectively, and then the screw groove 422 of the nut portion 42 is inserted into the thread of the connection members 121 and 131. Are connected to the connecting members 121 and 131 by being screwed together.
Next, the tip of a syringe 60 as an air suction device is inserted and connected to the first connection portion 20 of the pressure adjustment assisting tool 1.

  Next, the path of the blood collection tube 110 is closed by a clamp or the like (not shown). In this state, the piston of the syringe 60 is pulled. Then, the air in the internal space of the blood storage container 71 is sucked from one of the branched tubular portions 30 through the tube 120. Further, air in the pressure adjustment space is sucked from the other side of the branched tubular portion 30 through the tube 130. Thereby, negative pressure is simultaneously applied to the internal space of the blood storage container 71 and the pressure adjustment space, respectively. Here, since a pressure difference does not occur between the internal space of the blood storage container and the pressure adjustment space, the blood storage container 71 having flexibility even when a negative pressure is applied to the internal space of the blood storage container 71 Does not deform (does not collapse). Further, since the one-way valve 50 is provided at the connecting portion between the first tubular portion 10 and the branched tubular portion 30, the air does not flow backward even when the suction of the air by the syringe 60 is stopped, and the blood storage container 71 The decompressed state of the internal space and the pressure adjustment space is maintained.

In this state, a blood collection needle (not shown) attached to the tip of the blood collection tube 110 is stabbed into the subject, and then the path of the blood collection tube 110 is opened. Then, the blood collected from the blood collection needle by the negative pressure in the internal space of the blood storage container 71 is strongly sucked toward the blood storage container 71 and introduced into the blood storage container.
Thus, according to the pressure adjustment assisting tool 1 of the present embodiment, negative pressure can be simultaneously applied to two spaces using one syringe 60.

According to the pressure adjusting assisting tool 1 of the present embodiment described above, the following effects are obtained.
(1) The pressure adjusting auxiliary tool 1 includes a first connection portion 20 provided on one end side of the first tubular portion 10 and a pair of second connection portions 40 provided on the distal end side of the branch tubular portion 30. Consists of. Thus, the syringe 60 is connected to the first connection portion 20 in a state where the pair of second connection portions 40 are connected to the blood storage container 71 and the storage container 72, respectively, and air is sucked by the syringe 60. Thus, the air in the internal space of the blood storage container 71 and the air in the pressure adjustment space can be simultaneously sucked, and both the internal space of the blood storage container 71 and the pressure adjustment space can be simultaneously decompressed to the same extent.

  (2) The one-way valve 50 capable of circulating air only from the branched tubular portion 30 side to the first tubular portion 10 side is disposed at the connecting portion between the first tubular portion 10 and the branched tubular portion 30. Thereby, air does not penetrate | invade into a pair of 2nd connection part 40 side from the 1st connection part 20 side. Therefore, the decompressed state of the internal space of the blood storage container 71 and the pressure adjustment space can be maintained. Further, the sterility of the internal space of the blood storage container 71 can be ensured.

  (3) The 1st tubular part 10 and the branch tubular part 30 were each comprised with the tube which has flexibility. Therefore, when performing a pressure reduction operation using the pressure adjusting auxiliary tool 1, the pressure adjusting auxiliary tool 1 can be deformed at the first tubular portion 10 and the branch tubular portion 30. The operability of the decompression operation using 1 can be further improved.

  (4) The second connection portion 40 includes the connection portion main body 41 and the nut portion 42. Therefore, since the connection between the second connection part 40 and the blood sampling device 100 can be performed more reliably, the certainty of the decompression operation using the pressure adjusting auxiliary tool 1 can be enhanced.

  (5) The 1st tubular part 10, the 1st connection part 20, the branched tubular part 30, and the pair of 2nd connection parts 40 were constituted by a transparent member, respectively. Therefore, since the inside of the pressure adjustment auxiliary tool 1 can be easily visually recognized, the hygiene state of the pressure adjustment auxiliary tool 1 can be easily managed.

As mentioned above, although this invention was demonstrated based on the preferable embodiment, this invention is not restrict | limited to the said embodiment, As long as it does not deviate from the meaning of this invention, it can change suitably.
For example, in the present embodiment, the nut portion 42 is screwed to the outer surface of the suction object in the connection between the second connection portion 40 and the suction object, but this is not a limitation. That is, the nut portion may be fitted to the outer surface of the suction object.

Moreover, it is good also as a structure where each of the connection system of the 2nd connection part 40 and a suction target object and the connection system of the 1st connection part 20 and the syringe 60 differ. Thereby, for example, since the first connection portion 20 and the suction object cannot be connected to each other, erroneous connection of each connection portion can be prevented. Therefore, the certainty of the decompression operation using the pressure adjusting auxiliary tool 1 is prevented. Can be improved.
Note that the configuration of the connection method of each connection portion for preventing this erroneous connection is not particularly limited, and various techniques can be applied. Specifically, the connection methods may be appropriately combined from screwing, fitting, etc., and the connection parts other than the connection target are made different in the shape and size of each connection part (for example, tapered inclination of the fitting). A method that cannot be connected may be adopted.

In the present embodiment, the pressure adjustment assisting tool 1 is used in the blood sampling device 100 as the suction object, but the present invention is not limited to this. That is, as shown in FIG. 7, the pressure adjustment assisting tool 1 is aseptically connected to a blood reservoir 100A having the same configuration as the blood sampling device 100 and a blood reservoir 71 of the blood reservoir 100A. You may use for the blood component isolation | separation storage apparatus 200 provided with the component storage part 140 which has the component storage container 74. FIG.
In this case, the blood storage container 71 and the component storage container 74 are connected via the tube 150. In addition, one second connection portion 40 of the pair of second connection portions 40 of the pressure adjusting auxiliary tool 1 is connected to the tube 160 connected to the component storage container 74 via the connection member 161. The air in the internal space of the blood storage container 71 is sucked through the tube 150, the component storage container 74, and the tube 160.

DESCRIPTION OF SYMBOLS 1 Pressure adjustment aid 10 1st tubular part 20 1st connection part 30 Branch tubular part 40 2nd connection part 41 Connection part main body 42 Nut part 50 One-way valve 51 1st case 52 2nd case 53 Valve body 60 Syringe (air Suction device)
100 Blood collection device (aspiration object)
200 Blood component separation container (suction object)

Claims (6)

A first tubular portion;
A first connection portion provided on one end side of the first tubular portion and connectable to an air suction device;
A branched tubular portion having a proximal end connected to the other end of the first tubular portion and a distal end branched;
A pressure-adjusting auxiliary tool comprising: a pair of second connection portions that are provided on the distal ends of the branch tubular portions and are connectable to a suction object.   It is provided in the vicinity of the connecting portion between the first tubular portion and the branched tubular portion, allows air to flow from the branched tubular portion side to the first tubular portion side, and from the first tubular portion side to the first tubular portion. The auxiliary tool for pressure adjustment according to claim 1, further comprising a one-way valve that blocks air flow to the branched tubular portion side.   The auxiliary tool for pressure adjustment according to claim 1 or 2, wherein each of the first tubular portion and the branched tubular portion is configured by a flexible tube.   The pair of second connection portions includes a connection portion main body that can be inserted into a connection portion of the suction object with the second connection portion, and is screwed into an outer surface of the connection portion that is disposed outside the connection portion main body. The auxiliary | assistant tool for pressure adjustment in any one of Claims 1-3 provided with the nut part which can be fitted.   The said nut part is an auxiliary tool for pressure adjustment of Claim 4 comprised so that a slide to the longitudinal direction of the said connection part main body is possible.   The said nut part is an auxiliary tool for pressure adjustment of Claim 4 or 5 comprised so that rotation in the circumferential direction is possible with respect to the said connection part main body.

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