JP2012200437A - Multi-way cock and liquid medicine administration implement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multi-way cock and a liquid medicine administration implement excellent in the operability.SOLUTION: The three-way cock 3 includes: a first port 331 to which a syringe 6 is connected; a second port 332 to which an adapter 9 connecting a vial 7 is connected; a cylindrical part 32 which is cylindrically shaped and in which the first port 331 and the second port 332 are disposed on the outer periphery; and a cock 35 having a column-shaped barrel 36 rotatably inserted into the cylindrical part 32 and having channels 371-373 formed therein. The three-way cock 3 may take a first state in which the first port 331 communicates with the second port 332 by rotationally operating the cock 35, or a second state in which the communication between the first port 331 and the second port 332 is blocked by closing the second port 332. The three-way cock 3 also includes a detachment mechanism 30 for preventing detachment of the adapter 9 from the second port 332 in the first state and permitting detachment of the adapter 9 from the second port 332 in the second state.

Description

  The present invention relates to a multiway stopcock and a drug solution administration device.

  For example, when a patient self-injects a drug solution such as a blood product, the drug may be dissolved or diluted with a liquid, and the drug solution may be sucked with a syringe and used. These operations are performed as follows.

  First, using a double-ended needle or an adapter with a hollow needle, connect the drug container containing the drug to one end of the double-ended needle or hollow needle, and connect the liquid container containing the liquid to the other end. Then, the liquid in the liquid container is transferred into the drug container. Thereby, the chemical | medical agent in a chemical | medical agent container is melt | dissolved or diluted with a liquid, and a chemical | medical solution is obtained (for example, refer patent document 1).

  Next, remove the adapter from the drug container, use a syringe with a puncture needle with a sharp needle tip at the tip, pierce the puncture needle through the plug of the drug container, and remove the drug solution in the drug container from the syringe. Suction and fill into the cylinder. Thereafter, the drug solution can be administered using this syringe.

  By the way, it is conceivable to use a three-way cock having three ports in place of such a conventional adapter. In this case, a drug container is connected to the first port of the three ports via an adapter, a syringe serving as a liquid container is connected to the second port, and a winged needle is connected to the third port. It connects via a tube and can operate a cock in this state, and can switch the communication state and interruption | blocking state of ports. Thereby, a chemical | medical solution can be administered from a syringe with a winged needle.

  However, when such a three-way stopcock is used, when a drug solution is administered, an empty drug container is directly connected to the three-way stopcock, so that the drug container interferes with the drug solution administration operation. There was a problem.

JP 2005-516696 A

  An object of the present invention is to provide a multiway stopcock and a drug solution administration device excellent in operability.

Such an object is achieved by the present inventions (1) to (8) below.
(1) a first port to which a first medical device is connected;
A second port to which an adapter for connecting a second medical device is connected;
A cylindrical portion having a cylindrical shape and the first port and the second port arranged on the outer periphery thereof,
A cock having a cylindrical body portion that is rotatably inserted into the cylindrical portion and has flow paths corresponding to the first port and the second port, respectively.
By rotating the cock, the first state in which the first port and the second port communicate with each other, the second port is closed, and the first port and the second port are closed. A multiway cock that can take a second state in which communication with the other port is blocked,
A multi-way system comprising: a detaching mechanism that prevents the adapter from being detached from the second port in the first state and capable of detaching the adapter from the second port in the second state. Stopcock.

(2) The adapter has a tubular portion for connecting to the second port,
The detachment mechanism includes a protruding piece formed on the outer peripheral portion of the tubular portion,
An engagement piece that is provided on the cock and moves on a circumference around the central axis of the trunk in conjunction with a turning operation of the cock;
In the first state, the engaging piece engages with the protruding piece to prevent the adapter from detaching from the second port, and in the second state, the engagement is released, The multiway cock according to (1), wherein the adapter can be detached from the second port.

(3) A pair of the protruding pieces are provided on opposite sides of each other via the central axis of the second port,
The engagement piece is a multiway cock according to (2), wherein a pair of the engagement pieces are provided corresponding to the pair of protrusions.

(4) further comprising a third port to which a third medical device is connected;
The multiway cock according to any one of (1) to (3), wherein the first port and the third port communicate with each other in the second state.

(5) Each of the first port, the second port, and the third port is formed to protrude in a cylindrical shape,
The second port protrudes toward the sides of the first port and the third port, and the first port and the third port are arranged in a straight line. The multiway cock according to (4).

  (6) One of the first medical instrument and the second medical instrument has a medicine container in which a medicine is stored, and the other medical equipment dissolves or dilutes the medicine. The multi-way stopcock according to (4) or (5) above, wherein the third medical instrument has a puncture needle.

  (7) An adapter having a tubular portion connected to the second port, a hollow needle for connecting to the second medical instrument, and a tube communicating with the tubular portion and the hollow needle is provided. The multiway cock according to any one of (1) to (6) above.

(8) The multiway cock according to any one of (1) to (7) above,
A first medical device connected to the first port;
A second medical device connected to the adapter,
One of the first medical device and the second medical device contains a medicine, and the other medical device contains a liquid that dissolves or dilutes the medicine. A medicinal solution administration device characterized in that it can be inhaled and discharged.

  According to the present invention, when a drug solution administration operation is performed, a medical instrument that has become unnecessary during the operation and is connected to the second port via the adapter can be removed together with the adapter. As a result, the medical device that has become unnecessary can be easily operated without interfering with subsequent operations, and thus has excellent operability.

  In addition, the multiway stopcock includes a cock for switching between the first state and the second state, and a detachment mechanism is provided on the cock that protrudes from the adapter, and is interlocked with the rotation operation of the cock. In the case of having the engaging piece that can be engaged / disengaged with respect to the protruding piece, the adapter can be quickly detached.

It is a side view which shows 1st Embodiment of the chemical | medical solution administration tool of this invention. It is a perspective view which shows operation (a 2nd state from a 1st state) of the three-way cock provided with the chemical | medical solution administration tool shown in FIG. 1 in order. It is a perspective view which shows operation (a 2nd state from a 1st state) of the three-way cock provided with the chemical | medical solution administration tool shown in FIG. 1 in order. It is the sectional view on the AA line in FIG. FIG. 5 is a sectional view taken along line BB in FIG. 3. It is a longitudinal cross-sectional view for demonstrating the use procedure of the chemical | medical solution administration tool shown in FIG. It is a longitudinal cross-sectional view for demonstrating the use procedure of the chemical | medical solution administration tool shown in FIG. It is a longitudinal cross-sectional view for demonstrating the use procedure of the chemical | medical solution administration tool shown in FIG. It is a longitudinal cross-sectional view for demonstrating the use procedure of the chemical | medical solution administration tool shown in FIG. It is a longitudinal cross-sectional view for demonstrating the use procedure of the chemical | medical solution administration tool shown in FIG. It is a perspective view which shows 2nd Embodiment of the chemical | medical solution administration tool of this invention.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the multiway stopcock and drug solution administration device of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

<First Embodiment>
FIG. 1 is a side view showing a first embodiment of a drug administration device of the present invention, and FIGS. 2 and 3 are respectively operations of a three-way stopcock provided in the drug administration device shown in FIG. 4 is a sectional view taken along line AA in FIG. 2, FIG. 5 is a sectional view taken along line BB in FIG. 3, and FIGS. It is a longitudinal cross-sectional view for demonstrating the use procedure of the chemical | medical solution administration tool shown in. In the following, for convenience of explanation, the right side in FIGS. 1 and 6 to 10 is referred to as “base end”, and the left side is referred to as “tip”. Moreover, the upper side in FIGS. 4 to 10 is referred to as “upper” or “upper”, and the lower side is referred to as “lower” or “lower”.

  A drug administration device 1 shown in FIG. 1 is an instrument used when self-injecting a drug solution. The drug administration device 1 includes a three-way stopcock (multi-way stopcock) 3, a syringe 6 that is a first medical device (inhalation / discharge device) capable of inhaling and discharging liquid, and a second medical device in which a medicine is stored. A vial (drug container) 7 that is an instrument, and a puncture needle 5 and a tube 4 that are third medical instruments constituting a drug solution administration line are provided.

  The first medical device is not limited to a syringe as long as it can inhale and discharge liquid, and other examples include a soft container such as an infusion bag. Moreover, as a 2nd medical device, if it is a container in which the chemical | medical agent was accommodated, not only a vial but a soft container, such as an infusion bag, etc. will be mentioned, for example. Moreover, the chemical | medical solution administration tool 1 can be used also when medical workers, such as a doctor and a nurse, perform injection with respect to a patient besides self-injection, for example. Hereinafter, the configuration of each unit will be described.

  The syringe 6 includes an outer cylinder 61, a gasket 66 that can slide within the outer cylinder 61, and a pusher 65 that moves the gasket 66 along the axial direction (longitudinal direction) of the outer cylinder 61. The gasket 66 is connected to the tip of the pusher 65.

  The outer cylinder 61 is formed of a bottomed cylindrical member, and a mouth portion 62 whose diameter is reduced with respect to the body portion of the outer cylinder 61 is integrally formed at the tip portion thereof, that is, the center portion of the bottom portion on the tip side. Has been. From the mouth 62, a liquid such as a chemical solution is sucked or discharged. In addition, the first port 331 of the three-way cock 3 is detachably connected to the mouth portion 62.

  A space (liquid storage space) surrounded by the outer cylinder 61 and the gasket 66 of the syringe 6 is filled with a liquid that dissolves or dilutes the medicine stored in the vial 7. The liquid is not particularly limited and may be appropriately selected depending on the drug. Examples thereof include water for injection, physiological saline, and glucose solution.

  The liquid may be sealed in the syringe 6 in advance, or the liquid may be sucked into the syringe 6 when used.

  As described above, the syringe 6 is connected to the first port 331 of the three-way stopcock 3, but the filter 8 is detachably attached to the first port 331 before the syringe 6 is connected. (See FIGS. 1, 6, and 7).

  The filter 8 has a housing 81 and a filter member 82 which is installed in the housing 81 and allows gas to pass but bacteria do not pass.

  Examples of the filter member 82 include nonwoven fabrics such as polypropylene, polysulfone, regenerated cellulose, polyamide, polyester, polyethylene, and polytetrafluoroethylene, paper, or those obtained by applying a sealing process thereto.

  The vial 7 has a bottomed cylindrical hard main body 71 in which a medicine is stored, and a stopper 72 that is provided at the lower mouth of the main body 71 and hermetically seals the space in the main body 71. is doing. An annular member 73 is attached around the mouth of the main body 71 and the plug body 72, thereby preventing the plug body 72 from being detached from the main body 71. Further, the inside of the vial 7 has a negative pressure. This vial 7 is connected to the adapter 9 of the three-way stopcock 3.

  Examples of the drug include, but are not limited to, blood preparations such as dry human blood coagulation factor VIII, hormone preparations such as insulin preparations, antiviral agents such as interferon preparations, and the like.

  Moreover, it does not specifically limit as a form of a chemical | medical agent, For example, solid (a tablet, a granule, a freeze-drying agent, etc.), solid things, such as a powder (powder etc.), a liquid (liquid agent etc.), etc. are mentioned. .

  The base end of the tube 4 is connected to the third port 333 of the three-way cock 3 via the connecting portion 11 and communicates with the flow path 343 of the third port 333. The length of the tube 4 is not particularly limited, but is preferably about 15 to 40 cm, and more preferably about 20 to 30 cm. Thereby, self-injection can be performed more easily. Moreover, the connection part 11 comprises a cylinder shape and is a member comprised with the hard resin material.

  A hollow puncture needle 5 having a sharp needle tip is connected to the distal end portion of the tube 4. The puncture needle 5 is fitted with a cap in an unused state and a used state.

  A pair of wings 51 a and 51 b are formed on the side of the proximal end side of the puncture needle 5. That is, the puncture needle 5 is a winged needle. Each of the wings 51a and 51b has flexibility and can be opened and closed by bending or bending the wings 51a and 51b.

  When the puncture needle 5 is punctured, the wings 51a and 51b are picked up with fingers and closed, and the puncture operation can be performed. It is also possible to puncture the other parts without picking the wings 51a and 51b. After puncturing the puncture needle 5, the wings 51a and 51b are opened, and the wings 51a and 51b are fixed to the skin with an adhesive tape or the like.

  As shown in FIGS. 2 to 10, the three-way cock 3 includes a main body 31, a cock 35, and a release mechanism 30.

  The main body 31 has a cylindrical portion 32 having a cylindrical shape, and a first port 331, a second port 332, and a third port that are disposed on the outer peripheral portion of the cylindrical portion 32 and project outward in the radial direction. Port 333. The adapter 9 is detachably connected to the second port 332.

  The first port 331, the second port 332, and the third port 333 each have a tubular shape and are arranged at equiangular intervals, that is, at an angle of 90 °. In this case, the first port 331 and the third port 333 are arranged at an angle of 180 °, that is, arranged on a straight line. Further, the second port 332 protrudes toward the side of the first port 331 and the third port 333, that is, an angle of 90 ° with respect to each of the first port 331 and the third port 333. Are arranged apart from each other. The first port 331, the second port 332, and the third port 333 are disposed at the same height position of the cylindrical portion 32.

  As described above, the syringe 6 is detachably connected to the first port 331, and the filter 8 is detachably attached. That is, the filter 8 and the syringe 6 are selectively attached to the first port 331.

  The first port 331 has a cylindrical shape. The first port 331 is formed integrally with the cylindrical portion 32.

  Further, the flow path 341 formed inside the first port 331 communicates with the lumen 320 of the cylindrical portion 32.

  The third port 333 has a cylindrical shape and is a port to which the tube 4 is connected via the connecting portion 11. The third port 333 is formed integrally with the cylindrical portion 32.

  Further, the flow path 343 formed inside the third port 333 communicates with the lumen 320 of the cylindrical portion 32.

  As shown in FIGS. 6 to 10, a tubular auxiliary member 39 a that assists connection with the connecting portion 11 is inserted into the flow path 343. The auxiliary member 39a is liquid-tightly fixed to the third port 333 by a method such as fusion or adhesion, and the liquid-tightness between the flow path 343 and the connecting portion 11 can be maintained.

  Further, in the flow path 343, a filtration member 39b is disposed on the proximal end side of the auxiliary member 39a. The filtration member 39b is fixed with a filtration net for removing foreign substances in the chemical solution. The filtering member 39b is fixed so as to abut on the inner peripheral surface of the third port 333. As a fixing method, for example, fitting or fusion (thermal fusion, high frequency fusion, ultrasonic wave) Fusion), adhesion (adhesion with an adhesive or a solvent), and the like. Further, the filtration net is fixed to the filtering member 39b by a method such as fusion (thermal fusion, high frequency fusion, ultrasonic fusion, etc.), adhesion (adhesion with an adhesive or a solvent), or the like.

  The second port 332 is a port to which the adapter 9 is connected. The second port 332 is a cylindrical member formed integrally with the cylindrical portion 32 (the first port 331 and the third port 333). The flow path 342 formed inside the second port 332 communicates with the lumen 320 of the cylindrical portion 32.

  A cylindrical sealing member 39c made of an elastic material is disposed between the inner peripheral portion of the adapter 9 and the outer peripheral portion of the second port 332. The sealing member 39 c maintains liquid tightness when the adapter 9 is connected to the second port 332. As a result, the liquid is prevented from leaking unintentionally when the liquid goes back and forth between the vial 7 and the three-way cock 3. The sealing member 39c is a method such as fitting, fusing (thermal fusing, high frequency fusing, ultrasonic fusing, etc.), adhesion (adhesion with an adhesive or a solvent), etc., to the second port 332 It is fixed by. In addition, the outer peripheral surface of the sealing member 39c has a tapered shape whose outer shape gradually decreases upward. The sealing member 39c may be fixed on the adapter 9 side. In this case, the outer peripheral surface of the second port 332 has a tapered shape whose outer diameter gradually decreases upward.

The adapter 9 is configured to be detachably attached to the second port 332.
The adapter 9 has a main body 91 and a hollow needle 92 that can pierce the stopper 72 of the vial 7. The main body 91 has a bottomed cylindrical holder 911 that surrounds the hollow needle 92, and a tubular portion 912 formed at the bottom of the holder 911 so as to protrude in the axial direction of the holder 911. The tubular portion 912 fits the sealing member 39c in a liquid-tight manner. The diameter of the tubular portion 912 is set smaller than the diameter of the holder 911.

  The hollow needle 92 is located in the holder 911 and is formed on the bottom of the holder 911 so as to protrude in the axial direction (upward) of the holder 911. Further, the hollow needle 92 communicates with the flow path 342 of the second port 332. Further, a plurality of holes 921 penetrating through the side portions of the hollow needle 92 in the longitudinal direction are formed, and the inside and outside of the hollow needle 92 communicate with each other through the holes 921. . Thereby, when the hollow needle 92 pierces the stopper 72 of the vial 7, the inside of the vial 7 and the flow path 342 of the second port 332 communicate with each other via the hollow needle 92 (see FIGS. 7 to 9). .

  As shown in FIGS. 2 to 10, the cock 35 includes a cylindrical body portion 36, a side plate portion 362 provided at one end of the body portion 36, and a direction orthogonal to the axial direction of the body portion 36 on the side plate portion 362. And a lever 38 formed on the surface. The body portion 36 has a columnar shape or a cylindrical shape (columnar shape in the illustrated configuration), and is rotatably inserted into the inner cavity 320 of the cylindrical portion 32 with airtightness or liquidtightness. Further, the lever 38 can be gripped with fingers and the cock 35 can be rotated.

  The three-way cock 3 having such a configuration can take the first state shown in FIGS. 6 to 8 and the second state shown in FIGS. 9 and 10 by operating the cock 35 times.

  When the lever 38 is positioned in the direction of the first port 331 and the third port 333 as shown in FIG. 2, the first state is established. This first state is a state in which the first port 331 and the adapter 9 communicate with each other via the flow paths 372 and 373 of the trunk portion 36. Further, the third port 333 is closed by the outer peripheral surface of the body portion 36 and is blocked from the first port 331 and the adapter 9.

  Further, when the lever 38 is positioned in the direction of the adapter 9 as shown in FIG. This second state is a state in which the first port 331 and the third port 333 communicate with each other via the flow paths 371 and 373 of the trunk portion 36. Further, the adapter 9 is closed by the outer peripheral surface of the body portion 36 and is blocked from the first port 331 and the third port 333.

  Moreover, although not shown in figure, as a means to control rotation operation of the cock 35, the cylindrical part 32 and the side-plate part 362 may each be provided with protrusion. Thereby, the communication of the first port 331, the second port 332, and the third port 333 is restricted only to the first state and the second state described above. By providing such a rotation operation restricting means for the cock 35, it is possible to prevent an erroneous operation during drug administration, as will be described later.

  As described above, the adapter 9 is detachably attached to the second port 332. The detachment mechanism 30 prevents the adapter 9 from detaching from the second port 332 (first port 331, third port 333) in the first state (see FIGS. 2 and 4). In this state, the adapter 9 can be detached from the second port 332 (see FIGS. 3 and 5).

  As shown in FIGS. 2 to 5, the detachment mechanism 30 corresponds to a pair of projecting pieces 931 and 932 that project from the lower part of the outer peripheral portion of the tubular portion 912 of the adapter 9 and a pair of projecting pieces 931 and 932. And a pair of engaging pieces 351 and 352 provided on the cock 35.

  The projecting piece 931 and the projecting piece 932 project toward opposite sides (outside) through the center axis of the adapter 9. The upper surfaces of the projecting pieces 931 and 932 are each curved in an arc shape like the outer peripheral portion of the cylindrical portion 32. Further, the lower surfaces of the projecting pieces 931 and 932 are flat surfaces.

  On the other hand, the engagement piece 351 is provided on the side plate portion 362, and the engagement piece 352 is provided on a plate-like flange portion 361 at the end opposite to the lever 38 of the body portion 36 of the cock 35. Yes. The engagement piece 351 and the engagement piece 352 are arranged to face each other and project toward the second port 332 side (inner side). In addition, the engagement pieces 351 and 352 are curved in an arc shape like the protrusion pieces 931 and 932, respectively.

  When the cock 35 is rotated, the engagement piece 351 moves on the circumference around the central axis of the body of the cock in conjunction with the operation and engages / disengages with the protrusion 931. The engagement piece 352 can be in an engaged / non-engaged state with respect to the protruding piece 932.

  As shown in FIGS. 2 and 4, the engagement piece 351 can be engaged (contacted) with the protruding piece 931 from above when the three-way cock 3 is in the first state. Similarly to the engaging piece 351, the engaging piece 352 can be engaged with the protruding piece 932 from above when the three-way cock 3 is in the first state. Such engagement can reliably prevent the adapter 9 from being detached from the second port 332 (moving upward).

  Furthermore, the lower portion of the inner peripheral surface of the tubular portion 912 of the adapter 9 is pressed (adhered) to the lower portion of the outer peripheral surface forming the tapered shape of the sealing member 39c by the engagement. The liquid tightness between the adapter 9 and the sealing member 39c is maintained. As described above, when the sealing member 39 c is fixed to the adapter 9 side, the inner peripheral surface of the tubular portion 912 of the adapter 9 is in close contact with the outer peripheral surface of the second port 332.

  As shown in FIGS. 3 and 5, when the lever 38 of the cock 35 is rotated 90 degrees clockwise toward the lever 38 so that the three-way cock is in the second state, the engagement piece 351 becomes a projecting piece. The engagement piece 352 is also disengaged from the protrusion 932. By such separation, the engagement with each of the projecting pieces 931 and 932 is released, so that the adapter 9 can be reliably detached from the second port 332. And by this detachment, as will be described later, the vial 7 and the adapter 9 can be detached from the three-way stopcock 3, so that the subsequent drug solution administration operation can be easily performed, and the operability is excellent.

  As shown in FIG. 10 (the same applies to FIGS. 6 to 9), the three-way stopcock 3 has a protrusion 334 as a positioning means for positioning the adapter 9 when the adapter 9 is attached to the second port 332, and a missing portion. (Notch part) 913 is provided.

  The protrusion 334 protrudes in a plate shape on the outer peripheral surface of the first port 331 in the same direction as the second port 332, that is, upward.

  The missing portion 913 is provided in the middle of the ring-shaped flange portion 914 provided between the tubular portion 912 of the adapter 9 (between the engagement piece 351 and the engagement piece 352).

  Then, as shown in FIGS. 6 to 9, the adapter 9 and the second port 332 are positioned by engaging the protrusion 334 with the missing portion 913.

  The constituent material of each part of the three-way cock 3 is not particularly limited, and for example, polyolefin such as polypropylene, polycarbonate, or the like can be used.

  As shown in FIGS. 1 and 6, the three-way cock 3 is housed in a box-shaped case (cover) 10 before the syringe 6 is connected.

  The case 10 includes a bottom plate 101 having a quadrangular shape in plan view, and a side plate 102 erected from four sides of the bottom plate 101. In addition, a slit 103 from which the third port 333 of the three-way cock 3 protrudes is formed in one of the four side plates 102.

  Since the three-way cock 3 is housed in such a case 10, when the vial 7 is connected to the adapter 9 connected to the second port 332 of the three-way cock 3, the three-way cock 3 is held together with the case 10. Therefore, the connection operation can be easily performed.

Next, the use procedure (action) of the drug administration device 1 when performing self-injection will be described.
First, as shown in FIGS. 1 and 2, the three-way cock 3 is housed in the case 10, and the puncture needle 5 is connected to the third port 333 via the tube 4. In the three-way stopcock 3, the lever 38 is adjusted to the position of the first port 331 and the third port 333, and the first port 331 and the adapter 9 communicate with each other. It has become. Further, the filter 8 is attached to the first port 331.

  Next, as shown in FIG. 7, with the filter 8 attached to the first port 331, the vial 7 is connected to the adapter 9 and the three-way cock 3 is removed from the case 10. The vial 7 is connected by pushing the vial 7 into the holder 911 of the adapter 9 from the stopper 72 side. As a result, the hollow needle 92 of the adapter 9 penetrates the stopper 72 of the vial 7, and the inside of the vial 7 and the second port 332 communicate with each other via the hollow needle 92. Since the inside of the vial 7 has a negative pressure, external air passes through the filter 8 and is introduced into the vial 7 through the three-way cock 3, and the inside of the vial 7 becomes atmospheric pressure. At this time, the filter 8 can prevent bacteria from entering the drug administration device 1 such as the three-way stopcock 3 or the vial 7.

  Next, as shown in FIG. 8, the filter 8 is removed from the first port 331, and the mouth portion 62 of the syringe 6 is connected to the first port 331. Then, the pusher 65 is moved while being pushed in the distal direction, the liquid sealed in the syringe 6 is introduced into the vial 7 from the syringe 6, and the vial 7 is shaken several times. Thereby, the medicine in the vial 7 is dissolved or diluted with the inflowing liquid, and the medicine liquid is stored in the vial 7. After the drug is generated, the pusher 65 is pulled and moved in the proximal direction, and a drug solution in the vial 7 is inhaled into the syringe 6 from the vial 7. The vial 7 from which the chemical solution has been aspirated may be in a state where the chemical solution remains or may be empty, but is not used in subsequent operations.

  Next, as shown in FIG. 3, the lever 38 of the three-way cock 3 is aligned with the position of the second port 332, and the first port 331 and the third port 333 communicate with each other. And At this time, the vial 7 which has become unnecessary in the previous operation can be detached from the second port 332 together with the adapter 9 by the operation of the separation mechanism 30 as described above (see FIGS. 5 and 10). Thereby, the vial 7 does not interfere with the subsequent operation, and the operation can be easily performed. At this time, by providing the rotation operation restricting means for the cock 35 as described above, the state in which the second port 332 and the third port 333 are erroneously communicated, and the first port 331 and the first port 331 The second port 332 and the third port 333 are not in communication with each other, so that it is possible to prevent an erroneous operation such that the chemical solution cannot be administered or the second port 332 leaks.

Next, the cap is removed from the puncture needle 5 and priming is performed.
Next, the tip of the puncture needle 5 is punctured at the target site, and the drug solution in the syringe 6 is administered. That is, the pusher 65 is moved while being pushed in the distal direction. Thereby, the chemical | medical solution in the syringe 6 is discharged | emitted from the syringe 6, flows out from the puncture needle 5 through the three-way cock 3 and the tube 4, and is administered. At this time, administration is performed after removing foreign substances such as solid medicine that could not be dissolved in the chemical solution by the filtration net of the filtration member 39b.

  Here, since the first port 331 to which the syringe 6 is connected and the third port 333 to which the tube 4 is connected via the connecting portion 11 are arranged on a straight line, air is not supplied during priming. It is difficult to remain, and resistance during administration of the drug solution is also reduced.

  As described above, according to the drug solution administration device 1 (three-way stopcock 3), when performing a drug solution administration operation, the vial 7 that has become unnecessary during the operation can be removed together with the adapter 9, and the operability is excellent. It has become. Further, in the drug solution administration device 1, the drug in the vial 7 can be dissolved or diluted to obtain a drug solution, and the operation of sucking the drug solution into the syringe 6 and flowing out from the puncture needle 5 can be performed easily and quickly.

Second Embodiment
FIG. 11 is a perspective view showing a second embodiment of the drug administration device of the present invention.

Hereinafter, the second embodiment of the multiway stopcock and the drug solution administration device of the present invention will be described with reference to this figure, but the description will focus on differences from the above-described embodiment, and the description of the same matters will be omitted. .
This embodiment is the same as the first embodiment except that the configuration of the adapter is different.

  11, the adapter 9A connected to the second port 332 of the three-way stopcock 3 communicates the second port 332 and the hollow needle 92 between the tubular portion 912 and the holder 911. Tube 12 to be used.

  Further, unlike the adapter 9 in the first embodiment, the adapter 9 </ b> A has a tubular tube connecting portion 94 that integrally protrudes in a direction orthogonal to the tubular portion 912, and the tube connecting portion 94 has a tube. 12 is connected.

  In the drug solution administration device 1 having such a configuration, when the drug in the vial 7 is dissolved (or diluted) with the liquid from the syringe 6, only the vial 7 can be shaken, so that the operability at the time of dissolution is excellent. . Moreover, since the adapter 9A can be disposed at a position different from the three-way cock 3 when packaging the drug administration device 1, the packaging can be made small. Thereby, it can suppress that the chemical | medical solution administration tool 1 is bulky at the time of transport or storage.

  As mentioned above, although the illustrated embodiment of the multiway cock and the drug administration device of the present invention has been described, the present invention is not limited to this, and each part constituting the multiway cock and the drug solution administration device has the same function. It can be replaced with any configuration that can be exhibited. Moreover, arbitrary components may be added.

  In addition, the multiway cock and the drug administration device of the present invention may be a combination of any two or more configurations (features) of the above embodiments.

In each of the above embodiments, a three-way stopcock is used as the multiway stopcock. However, the present invention is not limited to this, and for example, one having four or more ports may be used.
Further, the adapter and the second medical instrument may be integrally formed.

DESCRIPTION OF SYMBOLS 1 Chemical solution administration tool 3 Three-way cock 30 Release mechanism 31 Main body 32 Cylindrical part 320 Lumen 331 1st port 332 2nd port 333 3rd port 334 Protrusion 341,342,343 Flow path Piece 36 Body 361 Flange 362 Side plate 371, 372, 373 Flow path 38 Lever 39a Auxiliary member 39b Filtration member 39c Sealing member 4 Tube 5 Puncture needle 51a, 51b Wing 6 Syringe 61 Outer cylinder 62 Mouth 65 Pusher 66 Gasket 7 vial (drug container)
71 Main body 72 Plug body 73 Annular member 8 Filter 81 Housing 82 Filter member 9, 9A Adapter 91 Main body 911 Holder 912 Tubular part 913 Defect part (notch part)
914 Flange portion 92 Hollow needle 921 Hole 931, 932 Projection piece 94 Tube connection portion 10 Case (cover)
101 Bottom plate 102 Side plate 103 Slit 11 Connecting portion 12 Tube

Claims (8)

A first port to which a first medical device is connected;
A second port to which an adapter for connecting a second medical device is connected;
A cylindrical portion having a cylindrical shape and the first port and the second port arranged on the outer periphery thereof,
A cock having a cylindrical body portion that is rotatably inserted into the cylindrical portion and has flow paths corresponding to the first port and the second port, respectively.
By rotating the cock, the first state in which the first port and the second port communicate with each other, the second port is closed, and the first port and the second port are closed. A multiway cock that can take a second state in which communication with the other port is blocked,
A multi-way system comprising: a detaching mechanism that prevents the adapter from being detached from the second port in the first state and capable of detaching the adapter from the second port in the second state. Stopcock. The adapter has a tubular portion for connecting to the second port;
The detachment mechanism includes a protruding piece formed on the outer peripheral portion of the tubular portion,
An engagement piece that is provided on the cock and moves on a circumference around the central axis of the trunk in conjunction with a turning operation of the cock;
In the first state, the engaging piece engages with the protruding piece to prevent the adapter from detaching from the second port, and in the second state, the engagement is released, The multiway cock according to claim 1, wherein the adapter can be detached from the second port. A pair of protrusions are provided on opposite sides of each other via the central axis of the second port,
The multi-way cock according to claim 2, wherein a pair of the engaging pieces are provided corresponding to the pair of protruding pieces. A third port to which a third medical device is connected;
The multiway cock according to any one of claims 1 to 3, wherein in the second state, the first port and the third port communicate with each other. Each of the first port, the second port, and the third port is formed to protrude in a cylindrical shape,
The second port protrudes laterally of the first port and the third port, and the first port and the third port are arranged in a straight line. Item 5. The multiway cock according to item 4.   One of the first medical device and the second medical device has a medicine container in which a medicine is stored, and the other medical equipment has a liquid for dissolving or diluting the medicine. The multi-way stopcock according to claim 4 or 5, wherein the multi-way stopcock has a syringe that is sealed and capable of inhaling and discharging liquid, and wherein the third medical instrument has a puncture needle.   The adapter which has the tubular part connected to the said 2nd port, the hollow needle for connecting with the said 2nd medical device, and the tube which connects the said tubular part and the said hollow needle. The multiway stopcock in any one of thru | or 6. The multiway cock according to any one of claims 1 to 7,
A first medical device connected to the first port;
A second medical device connected to the adapter,
One of the first medical device and the second medical device contains a medicine, and the other medical device contains a liquid that dissolves or dilutes the medicine. A medicinal solution administration device characterized in that it can be inhaled and discharged.

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