JP2012254204A - Rubber button - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber button in which the cleaning (disinfection) operation of a surface of a rubber material is facilitated, and the number of parts is reduced to reduce the production cost and simplify the management of thereof.SOLUTION: The rubber button is connected with a blood circuit, and has the rubber material 1 formed with a slit 1a, and a connecting line 3 can be connected thereto, the connecting line having a connector 4 insertable to the slit 1a of the rubber material 1, formed at a distal end thereof, and the connecting line capable of sampling a fluid that flows in the blood circuit by inserting the connector 4 to the slit 1a or capable of injecting another fluid into the blood circuit. The rubber button includes a connection 2a and 2b that can be optionally switched between an occluded state where an upper part of the rubber material 1 is covered cylindrically and an open state where the upper part of rubber material 1 is opened, and can latch and hold the connector 4 inserted to the slit 1a in the occluded state.

Description

  The present invention has a rubber material that is connected to a fluid distribution line and has a slit formed therein that can communicate with the inside of the distribution line, and a connector that can be inserted into the slit of the rubber material is formed at the tip thereof. The present invention relates to a rubber button that can be connected to a connection line that can be inserted into a slit to collect a fluid flowing through the distribution line or inject a separate fluid into the distribution line.

  A blood circuit used for dialysis treatment and circulating a patient's blood extracorporeally is generally composed mainly of a flexible tube connecting each component such as a dialyzer and a drip chamber. A rubber button having a rubber material is connected to the position. The rubber material of the rubber button is formed with a slit that communicates the inside and outside of the blood circulation line, and the blood flowing through the blood circuit is collected by inserting a puncture tube, the tip of a syringe, or the like into the slit, or It is configured so that a drug or physiological saline can be injected into the blood circuit.

  By the way, for example, depending on the amount and type of the drug to be administered, the tube tip for drug administration may be connected to the rubber button instead of connecting the syringe to the rubber button. That is, when injecting a small amount of drug into the blood flowing through the blood circuit in a short time, it is preferable to inject with a syringe or the like. On the other hand, when injecting a drug continuously over a long period of time, the syringe is replaced with a syringe. A tube constituting the connection line is extended from the container containing the drug, and the tip of the tube is connected to a rubber button so that the drug in the container is fixed to the blood circuit using a liquid feeding means such as an infusion pump. Injection is carried out in amounts.

  At the tip of such a connection line, a connector that can be inserted into the slit of the rubber material in the rubber button is formed, and a locking means for preventing the connector from being detached from the rubber button during drug administration is attached. It has been. Such a locking means is provided separately from the connector formed at the tip of the connection line, and is composed of a member having an internal thread formed on the inner peripheral surface, and the female thread is formed on the male thread formed on the rubber button. It can be locked by screwing.

  As described above, the rubber material is conventionally held as a so-called lock-type rubber button that has a rubber material having a slit and that can be prevented from coming off by locking the tip of the connected connection line. There has been proposed a housing having a housing that can be attached to the cap by press fitting and that has a male screw portion that can be screwed with the female screw portion of the locking means (see, for example, Patent Document 1). This housing is separated from the cap of the rubber button, and has a float that can be connected to the connector inside, so that the surface of the rubber material can be exposed to the outside by removing it from the rubber button. It can be done.

JP 2003-339877 A

  However, in the conventional rubber button, the surface of the rubber material can be exposed to the outside by removing the housing, and cleaning work such as disinfection can be easily performed, but the housing is a separate body. For this reason, the number of parts increases, and it is necessary to manage the rubber button body and the housing, respectively, and there is a possibility that the housing may be lost. Further, since the conventional rubber button has a structure having a float in the housing, there is a problem that the number of parts is increased by the float and the manufacturing cost increases.

  The present invention has been made in view of such circumstances, and can easily clean (disinfect) the surface of the rubber material, reduce the number of parts, and reduce the manufacturing cost and facilitate the management. An object of the present invention is to provide a rubber button that can be realized.

  The invention described in claim 1 has a rubber material connected to a fluid distribution line and formed with a slit that can communicate with the inside of the distribution line, and a connector that can be inserted into the slit of the rubber material is formed at the tip. In the rubber button that can be connected to a connection line through which the connector is inserted into the slit to collect fluid flowing through the distribution line or a separate fluid can be injected into the distribution line, the upper portion of the rubber material is formed into a cylindrical shape It is possible to arbitrarily switch between a covered closed state and an open state in which the upper portion of the rubber material is opened, and a connection portion that can be prevented from coming off by locking the connector inserted through the slit in the closed state. It is characterized by having.

  According to a second aspect of the present invention, in the rubber button according to the first aspect, the connection portion is integrally formed with a case member constituting the casing, and can be switched between the closed state and the open state. And

  According to a third aspect of the present invention, in the rubber button according to the first aspect, the connecting portion is formed as a separate body from the case member constituting the casing, and is connected to the case member to form the closed state. It is possible to switch between open states.

  According to a fourth aspect of the present invention, in the rubber button according to any one of the first to third aspects, an end portion of the connection line can cover the closed connection portion and a female screw on an inner peripheral surface thereof. A locking means formed with a portion is attached, and a male screw portion that can be screwed to the female screw portion is formed on the outer peripheral surface of the connecting portion, and by screwing the female screw portion and the male screw portion, The connection part is locked and the closed state of the connection part is maintained.

  According to a fifth aspect of the present invention, in the rubber button according to the fourth aspect, the connector is formed with a stopper portion that protrudes outward to prevent the locking means from coming off, and the connection portion includes A locking portion that can be locked with the stopper portion is formed.

  The invention according to claim 6 is the rubber button according to any one of claims 2 to 5, wherein the connection portion is composed of two parts in which the cylindrical member is divided in half, and the two parts are The casing member is connected to the case member so as to be swingable between a position where the closed state is caused by matching each other and a position where the closed state is caused to be separated from each other.

  A seventh aspect of the present invention is the rubber button according to any one of the first to sixth aspects, wherein the distribution line comprises a blood circuit for purifying the patient's blood while circulating it outside the body. To do.

  According to the first aspect of the present invention, it is possible to arbitrarily switch between a closed state in which the upper portion of the rubber material is covered in a cylindrical shape and an open state in which the upper portion of the rubber material is opened, and the slit is inserted in the closed state. Since the connector is provided with a connecting portion that can be prevented from coming off, the surface of the rubber material can be easily cleaned (disinfected), and the number of parts can be reduced to reduce the manufacturing cost. Management can be facilitated.

  According to the invention of claim 2, since the connecting portion is integrally formed with the case member constituting the casing and can be switched between the closed state and the opened state, the casing portion and the connecting portion are manufactured separately. The manufacturing process can be reduced and manufacturing cost can be further reduced as compared with the manufacturing method.

  According to the invention of claim 3, the connecting portion is formed as a separate body from the case member constituting the housing, and is connected to the case member so that it can be switched between a closed state and an open state. Various connection states between the housing portion and the connection portion can be set, and the connection portion can be set to be smoothly switched between the closed state and the open state.

  According to the invention of claim 4, the front end of the connection line is attached with the locking means that can cover the connection part in the closed state and is formed with the female thread part on the inner peripheral surface. A male screw part that can be screwed to the female screw part is formed on the surface, and the connection part is locked by the screwing of the female screw part and the male screw part so that the closed state of the connection part is maintained. Thus, the closed state of the connecting portion can be maintained, and the connector can be locked.

  According to the invention of claim 5, the connector is formed with a stopper portion that protrudes outward to prevent the locking means from coming off, and the connection portion can be engaged with the stopper portion. Since the stop portion is formed, the stopper member can have both the function of preventing the locking means from coming off and the function of locking the connector with respect to the connection portion.

  According to invention of Claim 6, a connection part is comprised by two site | parts which divided the cylindrical member, and the said 2 site | part is spaced apart from the position which will be in the obstruction | occlusion state by making each other match. Thus, since it is connected to the case member so as to be swingable between the open position, the configuration of the rubber button provided with the connecting portion can be simplified.

  According to the invention of claim 7, since the distribution line is composed of a blood circuit for purifying the patient's blood while circulating outside the body, the rubber button is generally applied to the blood circuit where various blood collection operations and drug injection operations are performed. Therefore, blood collection work and drug injection work can be performed in multiple steps by easily cleaning (disinfecting) the surface of the rubber material.

The front view which shows the rubber button (a connection part is a closure state) which concerns on the 1st Embodiment of this invention Side view showing the rubber button (connection part closed) The perspective view which shows the 1st case member by which the connection part in the rubber button was made into the obstruction | occlusion state Front view showing the same rubber button (connection part open) Side view showing the same rubber button (connection part open) The perspective view which shows the 1st case member by which the connection part in the rubber button was made into the open state VII-VII line sectional view in FIG. VIII-VIII sectional view taken on the line in FIG. Side view showing connection line and connector connected to the rubber button XX sectional view in FIG. (A) Front view (b) Side view showing a state where the connecting portion of the rubber button is in a closed state and the connector is locked, and is not locked by the locking means. XII-XII sectional view in FIG. (A) Front view (b) Side view showing a state in which the connecting portion of the rubber button is in a closed state and the connector is locked and locked by the locking means. XIV-XIV line sectional view in FIG. XV-XV cross-sectional view in FIG. The 3rd page figure which shows the rubber button (a connection part is a closure state) which concerns on the 2nd Embodiment of this invention A perspective view showing the rubber button (connection portion is closed) 3-side view showing the same rubber button (connection part opened) The perspective view which shows the rubber button (connection part is an open state) XX-XX sectional view in FIG. XXI-XXI line sectional view in FIG. (A) Front view (b) Side view showing a state where the connecting portion of the rubber button is in a closed state and the connector is locked, and is not locked by the locking means. XXIII-XXIII sectional view taken on the line in FIG. (A) Front view (b) Side view showing a state in which the connecting portion of the rubber button is in a closed state and the connector is locked and locked by the locking means. XXV-XXV line sectional view in FIG. XXVI-XXVI line sectional view in FIG.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The rubber button according to the first embodiment is connected to a blood circuit (fluid distribution line) for purifying the patient's blood while circulating outside the body, and a rubber material in which a slit that can communicate with the blood circuit is formed. As shown in FIGS. 1 to 8, the rubber button is mainly composed of a casing F of the rubber button and a pair of connection portions 2a and 2b.

  The housing F is composed of a first case member f1, a second case member f2, and a third case member f3 each made of a resin member. Of these, a rubber material is formed by the second case member f2 and the third case member f3. 1 is held. The rubber material 1 has elasticity and can hold the internal flow path in a liquid-tight manner, and a slit 1a is formed at a substantially center. By expanding the slit 1a with the connector 4 of the connection line 3 to be described later, the distal end portion 4a of the connector 4 can be communicated with the internal flow path.

  The third case member f3 is formed with a hole f3a that allows the surface of the rubber material 1 to face the outside, and the connector 4 can be inserted into the slit 1a of the rubber material 1 through the hole f3a. . At both ends of the second case member f2, connection portions f2a to which a blood circuit α constituting a fluid circulation line can be connected are formed, respectively, and liquid such as blood flowing through the blood circuit α is contained in the casing F. The flow path (particularly the flow path constituted by the first case member f1 and the second case member f2) can be circulated.

  Here, the first case member f1 is connected so as to cover the outer sides of the second case member f2 and the third case member f3, and a pair of connection portions 2a and 2b are integrally formed. That is, a thin portion a having a smaller thickness than other portions is formed at a boundary portion between the first case member f1 and the connection portions 2a and 2b, and the connection portions 2a and 2b are first formed by the thin portion a. The case member f1 can be bent and operated.

  The connection portions 2a and 2b according to the present embodiment are composed of two members obtained by halving a cylindrical member, each of which is bent around a thin portion a and is swingable. As shown in -3, the upper part of the rubber material 1 is opened by being separated from each other as shown in FIGS. It is possible to switch arbitrarily in the open state. As a result, when the connecting portions 2a and 2b are in an open state, as shown in FIGS. 7 and 8, the surface of the rubber material 1 can be exposed to the outside. Cleaning (disinfection) of the surface of the material 1 is easily performed.

  In addition, a stopper 4b (see FIGS. 9 and 10) formed on the connector 4 of the connection line 3 is locked inside each of the connection portions 2a and 2b when the connection portions 2a and 2b are closed. Thus, a locking portion g (see FIGS. 12 and 14) that can be prevented from coming off is formed. That is, when the connecting portions 2a and 2b are brought into a closed state, the connector 4 inserted through the slit 1a of the rubber material 1 is locked by the locking portion g and can be prevented from coming off. Further, on the outer peripheral surfaces of the connecting portions 2a and 2b, when the connecting portions 2a and 2b are in a closed state, a male screw portion 5a (see FIGS. 10 and 14) of the locking means 5 described later can be screwed. Screw portions 2aa and 2ba are formed.

  On the other hand, the connection line 3 is made of a flexible tube, and a connector 4 (what is called a “male luer connector”) that can be inserted into the slit 1a of the rubber material 1 is formed at the tip. A separate fluid such as a drug can be injected into the blood circuit α in order to collect or administer a fluid such as blood flowing through the blood circuit α by inserting the connector 4 into the slit 1a. That is, as shown in FIGS. 9 and 10, the connection line 3 has a resin connector 4 attached to the tip, and is connected to the rubber button by inserting the connector 4 into the slit 1 a of the rubber material 1. Possible configuration.

  The distal end portion 4a of the connector 4 has a tapered shape so that the rubber material 1 can be easily inserted into the slit 1a. Further, at the tip of the connection line 3 (that is, the portion where the connector 4 is formed), cup-shaped locking means 5 (so-called “lock ring”) that is movable in the longitudinal direction of the connector 4 is used. ) Is attached. The lock means 5 is made of a resin part that can cover the connection portions 2a and 2b in the closed state (see FIG. 14) and has an internal thread portion 5a formed on the inner peripheral surface, and the internal thread portion 5a and the connection portion 2a. By connecting with the male screw portions 2aa and 2ba formed on 2b, the connecting portions 2a and 2b are locked, and the closed state of the connecting portions 2a and 2b is firmly held.

  Further, a stopper portion 4b is formed at a predetermined portion of the connector 4 so as to project outwardly in an annular shape and prevent the locking means 5 from coming off. The stopper portion 4b can prevent the locking means 5 from interfering and falling off the connector 4, and when the connecting portions 2a and 2b are closed, the connector 4 inserted through the slit 1a of the rubber material 1 The stopper portion 4b can be locked by the locking portion g, thereby preventing the connector 4 from coming off from the rubber material 1. The stopper portion 4b according to the present embodiment protrudes in an annular shape, but only partially protrudes outward or intermittently protrudes outward in the circumferential direction, etc. Also good.

Next, the connection method with the connection line 3 in the rubber button which concerns on this embodiment is demonstrated.
First, as shown in FIGS. 4 to 8, the connection portions 2 a and 2 b are kept open, and the distal end portion 4 a of the connector 4 formed at the distal end of the connection line 3 is inserted into the slit 1 a of the rubber material 1. Thereafter, the connecting portions 2a and 2b are switched to the closed state so that the connector 4 is covered with the connecting portions 2a and 2b as shown in FIGS. At this time, as shown in FIG. 12, the stopper portion 4b of the connector 4 is locked by the locking portion g.

  Then, the lock means 5 is moved downward, and the female screw portion 5a of the lock means 5 and the male screw portions 2aa, 2ba formed in the connection portions 2a, 2b are screwed together as shown in FIGS. . As a result, the connection portions 2a and 2b are locked (restricted from moving from the closed state to the open state), and the closed state of the connection portions 2a and 2b is firmly held. Thus, the connector 4 is firmly fixed, and the connection state of the connection line 3 can be reliably maintained.

  On the other hand, when the connection of the connection line 3 to the rubber button is to be released, the locking means 5 is moved upward while unscrewing the female screw portion 5a and the male screw portions 2aa, 2ba, and the connection portions 2a, 2b Unlock. Thereafter, the connecting portions 2a and 2b are separated from each other to be in an open state, and the stopper 4b and the locking portion g of the connector 4 are unlocked, and the connector 4 is pulled out from the slit 1a and removed from the rubber material 1. As a result, the connection line 3 can be detached from the rubber button, and in the detached state, the connection portions 2a and 2b are in an open state, so that the tip of the syringe or the like is inserted into the rubber material 1 or rubber. It is possible to easily clean (disinfect) the surface of the material 1.

  According to the present embodiment, the connection portions 2a and 2b are integrally formed with the first case member f1 constituting the housing F, and can be switched between a closed state and an open state. Compared with what manufactures the parts 2a and 2b separately, a manufacturing process can be reduced and manufacturing cost can be reduced more. In the present embodiment, it is possible to switch between the closed state and the open state of the connecting portions 2a and 2b by forming the thin-walled portion a. For example, intermittent slits, notches, notches Alternatively, a hinge or the like may be formed to switch between the closed state and the open state of the connection portions 2a and 2b.

Next, a second embodiment of the present invention will be described.
As in the first embodiment, the rubber button according to this embodiment is connected to a blood circuit (fluid distribution line) for purifying the patient's blood while circulating outside the body, and is a slit that can communicate with the blood circuit. As shown in FIGS. 16 to 21, the rubber button casing F ′ and a pair of connecting portions 7a and 7b are mainly configured. Note that the connection line for connecting to the rubber button is the same as in the first embodiment (see FIGS. 9 and 10), and thus detailed description thereof is omitted.

  The housing F ′ is composed of a first case member f4 and a second case member f5 each made of a resin member, and the rubber material 6 is held by the first case member f4 and the second case member f5. . The rubber material 6 has elasticity and can hold the internal flow path in a liquid-tight manner. Like the rubber material 1 in the first embodiment, a slit 6a is formed at substantially the center thereof. . The slit 6a is pushed out by the connector 4 of the connection line 3 to be described later, so that the tip of the connector 4 can communicate with the internal flow path.

  The second case member f5 is formed with a hole f5a that allows the surface of the rubber material 6 to face the outside, and the connector 4 can be inserted into the slit 6a of the rubber material 6 through the hole f5a. . At both ends of the first case member f4, connection portions f4a to which a blood circuit α constituting a fluid distribution line can be connected are formed, respectively, and a liquid such as blood flowing through the blood circuit α is supplied to the casing F ′. The internal flow path (the flow path constituted by the first case member f4 and the second case member f5) can be circulated.

  Here, in the present embodiment, the pair of connection portions 7a and 7b is formed as a separate body from the second case member f5 constituting the housing F ′, and is connected to a predetermined part of the second case member f5. It is connected at part b and can be switched between a closed state and an open state. That is, the connecting portion b is extended to the connecting portions 7a and 7b, and the tip of the connecting portion b is fixed to a predetermined portion of the second case member f5 (for example, adhesion by an adhesive, ultrasonic waves or high frequency). A pair of connection portions 7a and 7b are integrated with the second case member by welding with a welder, fitting and the like, and the connection portion 7a and 7b are connected to the second case member f5 by the connection portion b. Can be operated.

  The connecting portions 7a and 7b according to the present embodiment are composed of two members that divide the cylindrical member into two parts, each of which can be operated via the connecting portion b. As shown, a closed state in which the upper part of the rubber material 6 is covered in a cylindrical shape by matching each other, and an open state in which the upper part of the rubber material 6 is opened by being separated from each other as shown in FIGS. And can be switched arbitrarily. As a result, when the connection portions 7a and 7b are in an open state, the surface of the rubber material 6 can be exposed to the outside as shown in FIGS. 20 and 21, and the connection of the connection line 3 and the rubber material 6 Cleaning (disinfection) and the like of the surface of the battery can be easily performed.

  In addition, a stopper 4b (see FIGS. 9 and 10) formed on the connector 4 of the connection line 3 is locked inside each of the connection portions 7a and 7b when the connection portions 7a and 7b are closed. Thus, a locking portion h (see FIGS. 23 and 26) that can be prevented from coming off is formed. That is, when the connecting portions 7a and 7b are brought into a closed state, the connector 4 inserted through the slit 6a of the rubber material 6 is locked by the locking portion h and can be prevented from coming off. Further, on the outer peripheral surfaces of the connection portions 7a and 7b, a male screw portion that can be screwed with the female screw portion 5a (see FIGS. 10 and 25) of the lock means 5 when the connection portions 7a and 7b are closed. 7aa and 7ba are formed.

Next, the connection method with the connection line 3 in the rubber button which concerns on this embodiment is demonstrated.
First, as shown in FIGS. 18 to 21, the connection portions 7 a and 7 b are kept open, and the distal end portion 4 a of the connector 4 formed at the distal end of the connection line 3 is inserted into the slit 6 a of the rubber material 6. Thereafter, the connecting portions 7a and 7b are switched to the closed state so that the connector 4 is covered with the connecting portions 7a and 7b as shown in FIGS. At this time, as shown in FIG. 23, the stopper portion 4b of the connector 4 is locked by the locking portion h.

  Then, the lock means 5 is moved downward, and the female screw portion 5a of the lock means 5 and the male screw portions 7aa, 7ba formed on the connection portions 7a, 7b are screwed together as shown in FIGS. . As a result, the connection portions 7a and 7b are locked (restricted from moving from the closed state to the open state), and the closed state of the connection portions 7a and 7b is firmly held. Thus, the connector 4 is firmly fixed, and the connection state of the connection line 3 can be reliably maintained.

  On the other hand, when the connection of the connection line 3 to the rubber button is to be released, the locking means 5 is moved upward while unscrewing the female screw portion 5a and the male screw portions 7aa, 7ba, and the connection portions 7a, 7b Unlock. Thereafter, the connecting portions 7a and 7b are separated from each other to be in an open state, the locking between the stopper portion 4b and the locking portion h of the connector 4 is released, and the connector 4 is pulled out from the slit 6a and removed from the rubber material 6. Accordingly, the connection line 3 can be detached from the rubber button, and in the detached state, the connection portions 7a and 7b are in an open state, so that the tip of the syringe or the like is inserted into the rubber material 6 or the rubber It is possible to easily clean (disinfect) the surface of the material 6.

  According to the present embodiment, the connection portions 7a and 7b are formed separately from the second case member f5 constituting the housing F ′, and are connected to the second case member f5 via the connection portion b. Since it is integrated and can be switched between a closed state and an open state, various connection states between the casing F ′ and the connection portions 7a and 7b can be set, and the connection portions 7a and 7b are closed. It is possible to set so that the switching between the state and the open state is performed more smoothly. That is, the connection state between the housing part F ′ and the connection parts 7a and 7b can be arbitrarily set by changing the material and dimensions of the connection part b in various ways.

  According to the first embodiment and the second embodiment, a closed state in which the upper portion of the rubber material (1, 6) is covered in a cylindrical shape and an open state in which the upper portion of the rubber material (1, 6) is opened. In addition, the connector 4 is provided with connecting portions (2a, 2b) (7a, 7b) that can be prevented from coming off by locking the connector 4 inserted through the slits (1a, 6a) in the closed state. Therefore, the cleaning (disinfection) operation of the surface of the rubber material (1, 6) can be easily performed, and the number of parts can be reduced to reduce the manufacturing cost and facilitate the management. In particular, in the present embodiment, the connecting portions (2a, 2b) (7a, 7b) can lock the connector 4 inserted through the slits (1a, 6a) in the closed state, thereby preventing the disconnection. The number of parts can be reduced without requiring a separate float or the like.

  Further, the closed end of the connection line 3 (the portion where the connector 4 is formed in this embodiment) can cover the closed connection portions (2a, 2b) (7a, 7b) and has an internal thread on the inner peripheral surface. The locking means 5 formed with the portion 5a is attached, and the connecting portions (2a, 2b) (7a, 7b) are male threaded portions (2aa, 2ba) (which can be screwed with the female threaded portions 5a on the outer peripheral surface). 7aa, 7ba) are formed, and the connection portions (2a, 2b) (7a, 7b) are locked by screwing between the female screw portion 5a and the male screw portions (2aa, 2ba) (7aa, 7ba). Since the closed state of the parts (2a, 2b) (7a, 7b) is maintained, the closed state of the connecting parts (2a, 2b) (7a, 7b) can be held more firmly and the connector 4 is locked. be able to.

  Further, the connector 4 is formed with a stopper portion 4b that protrudes outward to prevent the locking means 5 from coming off, and the connecting portion (2a, 2b) (7a, 7b) has the stopper portion 4b. Since the locking portions (g, h) that can be locked are formed, the stopper member 4b has a function of preventing the locking means 5 from coming off and the connection of the connector 4 to the connecting portions (2a, 2b) (7a, 7b). It can also have a stop function.

  Further, the connecting portions (2a, 2b) (7a, 7b) are composed of two parts that halve the cylindrical member, and the two parts are in a closed state by matching each other, Since it is connected to the case members (first case member f1, second case member f5) so as to be swingable between positions that are separated from each other and opened, the connecting portions (2a, 2b) (7a, The configuration of the rubber button with 7b) can be simplified. Furthermore, since the distribution line comprises a blood circuit α for purifying the patient's blood while circulating it outside the body, this rubber button is connected to the blood circuit α, which is generally used for various blood collection operations and drug injection operations. By making the surface of the rubber material (1, 6) to be easily cleaned (disinfected), blood sampling work and drug injection work can be performed in a plurality of times.

  As mentioned above, although this embodiment was described, this invention is not limited to these, For example, a connection part shall consist of three or more members, and the upper part of the rubber material was covered by the cylinder shape by making them match each other. It is good also as what can be set as the open state which opened the upper part of the rubber material by being made into the obstruction | occlusion state and separating them mutually. If the connector inserted through the slit of the rubber material in the closed state is provided with a connecting portion that can be prevented from coming off, the means for locking the connecting portion in the closed state is the locking means 5. It may be different in configuration.

  Furthermore, the shape and parts of the rubber button are not limited to those in the present embodiment, and can be applied to various forms (for example, different shapes of slits and caps, etc.). Furthermore, the rubber button applied to the present embodiment is connected to a blood circuit for purifying the patient's blood while circulating it outside the body, but is connected to another fluid flow path (such as an infusion line). It can also be a rubber button.

  It is possible to switch freely between a closed state with the rubber material covered in a cylindrical shape and an open state with the rubber material open top, and the connector inserted through the slit in the closed state can be locked to prevent it from coming off. As long as the rubber button is provided with the connection portion, it can be applied to one having a different appearance shape or one having other functions added.

DESCRIPTION OF SYMBOLS 1 Rubber material 1a Slit 2a, 2b Connection part 2aa, 2ba Male thread part 3 Connection line 4 Connector 4b Stopper part 5 Locking means 5a Female thread part 6 Rubber material 6a Slit 7a, 7b Connection part 7aa, 7ba Male thread part g, h Locking part F, F 'housing

Claims (7)

It has a rubber material that is connected to a fluid distribution line and has a slit formed therein that can communicate with the inside of the distribution line, and a connector that can be inserted into the slit of the rubber material is formed at the tip so that the connector is inserted into the slit. In a rubber button that can connect a connection line that can collect fluid flowing through the distribution line or inject a separate fluid into the distribution line,
It is possible to arbitrarily switch between a closed state in which the upper portion of the rubber material is covered in a cylindrical shape and an open state in which the upper portion of the rubber material is opened, and the connector inserted through the slit in the closed state is locked. A rubber button characterized in that it has a connecting portion that can be prevented from coming off.   The rubber button according to claim 1, wherein the connection portion is integrally formed with a case member constituting a housing and can be switched between the closed state and the open state.   2. The connection portion is formed as a separate body from a case member constituting a housing, and is connected to the case member so as to be switched between the closed state and the open state. Rubber button as described.   At the tip of the connection line, a locking means that can cover the connection part in the closed state and has an internal thread formed on the inner peripheral surface is attached, and the female thread part on the outer peripheral surface is attached to the connection part 2. A male screw portion that can be screwed together is formed, and the connecting portion is locked by screwing the female screw portion and the male screw portion, and the closed state of the connecting portion is maintained. The rubber button as described in any one of -3.   The connector is formed with a stopper portion that protrudes outward to prevent the locking means from coming off, and the connection portion has a locking portion that can be locked with the stopper portion. The rubber button according to claim 4.   The connecting portion is composed of two parts obtained by halving the cylindrical member, and the two parts are placed in the open state by being separated from each other in a position where the closed state is caused by matching each other. 6. The rubber button according to claim 2, wherein the rubber button is connected to the case member so as to be swingable between positions.   The rubber button according to any one of claims 1 to 6, wherein the distribution line includes a blood circuit for purifying the patient's blood while circulating it outside the body.

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