JP4647365B2 - Medical connection device - Google Patents

Medical connection device Download PDF

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Publication number
JP4647365B2
JP4647365B2 JP2005101285A JP2005101285A JP4647365B2 JP 4647365 B2 JP4647365 B2 JP 4647365B2 JP 2005101285 A JP2005101285 A JP 2005101285A JP 2005101285 A JP2005101285 A JP 2005101285A JP 4647365 B2 JP4647365 B2 JP 4647365B2
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JP
Japan
Prior art keywords
tube
portion
member
locking
connection
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Active
Application number
JP2005101285A
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Japanese (ja)
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JP2006280452A (en
Inventor
努 大和
延嘉 藤原
Original Assignee
日本シャーウッド株式会社
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Priority to JP2005101285A priority Critical patent/JP4647365B2/en
Publication of JP2006280452A publication Critical patent/JP2006280452A/en
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Publication of JP4647365B2 publication Critical patent/JP4647365B2/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M39/1011Locking means for securing connection; Additional tamper safeties
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M2039/1027Quick-acting type connectors
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/10Tube connectors; Tube couplings
    • A61M2039/1072Tube connectors; Tube couplings with a septum present in the connector
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/02Access sites
    • A61M39/04Access sites having pierceable self-sealing members
    • A61M39/045Access sites having pierceable self-sealing members pre-slit to be pierced by blunt instrument

Description

  The present invention relates to a medical connection device capable of distributing various medical liquids such as chemical liquids and blood.

  In a medical connection instrument constituting an infusion line or the like, a closed system having an infection prevention function and a needlestick accident prevention function at a connection portion is used. For example, an elastic body such as a so-called septum for preventing infection through which the male connector tube can be inserted is provided in the injection hole of the female connector of the three-way cock, and the male connector tube is provided on the septum on the female connector side. There is a medical connection device in which a connection is made by inserting.

  In the medical connection device as described above, as a measure for preventing the disconnection of the connection between the female connector and the male connector, there is a method using fastening using screws (for example, see Patent Document 1).

JP-T-8-500983 Publication (2nd page, Fig. 2)

  However, in the above case, when a torque acts in the direction of loosening the screw, there is a risk that the connection between the female connector and the male connector is likely to be disconnected. In particular, when the torque applied to the connector increases, the possibility that the female connector and the male connector are disconnected increases.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to propose a connection device that can make the connection stronger in a medical connection device.

The medical connection instrument according to the present invention includes a first tube member capable of passing a liquid and a second tube member capable of passing a liquid, and the first tube member is configured to distribute liquid. A circulation pipe, and an outer cylinder formed on the outer side of the circulation pipe coaxially with the circulation pipe and connected to the circulation pipe, and the second pipe is disposed at a peripheral edge of the distal end of the outer cylinder A locking portion defined by a groove for locking the member is disposed oppositely in the circumferential direction . The locking portion has a locking surface corresponding to a force in the tube axis direction, and extends from the locking surface in the circumferential direction. A flange surface corresponding to the force is formed, and the second tube member is connected to the connection tube portion that can be inserted inside the outer tube body of the first tube member, and on the outer peripheral surface of the connection tube portion. a protrusion having the locking surface and the two surfaces respectively engageable with the鉤面a protrusion which is inserted into oppositely disposed within said groove, of the connecting tube portion And can accommodate accommodating section flow tube tip of the formed said first tubular member, the communicating portion communicating with the are provided on the housing part,
An outer peripheral portion that is formed in a straight line so that the engagement surfaces of the flange surface , the locking surface, and the protrusion are linearly joined to each other, and that is opposed to the intersection of the two surfaces of the protrusion. Is a chamfered portion, and a portion facing the chamfered outer peripheral portion of the groove is formed to be recessed in an arc shape .

The locking surface and the flange surface are formed with an acute angle, and the protrusion has a shape that fits in contact with both the locking surface and the flange surface. Is preferred.
Further, at least one of the first tube member and the second tube member is provided with an elastic body that urges the protrusion in a direction to press the protrusion against the locking surface when the two tube members are connected. Is preferred.

According to the medical connection instrument of the present invention, the first tube member and the second tube member can be coupled by fitting the locking portion and the protrusion. And in the connection state of the 1st pipe member and the 2nd pipe member, even when torque acts in the direction which loosens those connection forces, the projection of the 1st pipe member and the projection of the 2nd pipe member By the engagement of the linear joint, it becomes difficult to disengage them, and the connection of the connecting device is stabilized.
Further, the locking surface and the flange surface are formed so as to form an acute angle, and the protrusion is fitted while being in contact with both the locking surface and the flange surface, whereby the first tube The engagement between the member and the second tube member becomes stronger.
Furthermore, since the protrusion is biased toward the locking surface by the elastic body arranged at the facing portion between the first tube member and the second tube member, the first tube member and the second tube member Engagement becomes stronger.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a connection state of a medical connection device according to an embodiment of the present invention, and FIG. 2 is an exploded view of the connection device of FIG. As shown in FIGS. 1 and 2, the medical connection instrument 1 of the present embodiment includes a first tube member 100 and a second tube member 200 made of synthetic resin or the like that constitute a connection portion of a liquid flow path. These two pipe members 100 and 200 are connected and used. The connecting device 1 can be used to pass various medical liquids such as a chemical solution, a nutrient, an anticancer agent, physiological saline, and blood.

FIG. 3 is a top view (a), a side view (b), and a cross-sectional view (c) of the first tube member 100 constituting the connection device 1 of FIG.
The first pipe member 100 includes a pipe that forms a flow path and through which a liquid such as a chemical solution passes, that is, a circulation pipe 10, and an outer cylindrical body 20 that is formed coaxially with the circulation pipe 10 and outside the circulation pipe 10.

The flow tube 10 includes a cylindrical base tube portion 11 connected to a tube, a catheter, a syringe, or the like, a connection tube portion 12 provided for connection to a flow path of the second tube member 200, and a base tube portion 11. And an intermediate pipe part 13 connecting the connection pipe part 12.
The outer cylinder 20 has a bottom portion 21, and the bottom portion 21 is connected to the flow pipe 10 in the vicinity of the connecting portion between the base tube portion 11 and the connecting tube portion 12. The distal end of the outer cylindrical body 20 extends to the vicinity of the distal end portion of the connection pipe portion 12 of the flow pipe 10.

A locking portion 26 defined by a groove 23 for locking and connecting the second tube member 200 is provided at the distal end peripheral portion 22 of the outer cylindrical body 20. The locking portion 26 includes a locking surface 24 corresponding to a force in the tube axis direction, and a flange surface 25 extending from the locking surface 24 in a hook shape and corresponding to a force in the circumferential direction (tube diameter direction). Is formed. It is preferable that the engagement surface of the flange surface 25 with a projection 51 described later is formed in a straight line, and that the locking surface 24 and the flange surface 25 are formed with an acute angle. Moreover, it is preferable that the locking surface 24 is formed so as to be substantially orthogonal to the tube axis direction so as to correspond to the tensile force in the tube axis direction.
It should be noted that at least two locking portions 26 are provided at positions facing the distal end peripheral edge portion 22 of the outer cylinder 20.

4 is a top view (a), a side view (b), and a front view (c) of the second tube member 200 constituting the connection device 1 of FIG. 1, and FIG. 5 is a cross-section of the second tube member 200. FIG.
The second tube member 200 is a connection tube portion 50 that can be inserted inside the outer tube body 20 of the first tube member 100, and a flow tube 10 of the first tube member 100 formed inside the connection tube portion 50. A housing portion 60 capable of housing the distal end portion of a certain connecting pipe portion 12 and communication portions 70, 80, 90 communicating with the housing portion 60 are provided. Each communication part 70, 80, 90 can be connected to a tube, a catheter, a syringe or the like. Note that the number of communication portions is not necessarily three, and it is sufficient that at least one communication portion is provided.

  On the outer peripheral surface of the connecting tube portion 50, at least two protrusions 51 that can be fitted to the locking portion 26 of the first tube member 100 and can be engaged with the flange surface 25 are provided. The engaging surface of the protrusion 51 with the flange surface 25 of the first tube member 100 is formed in a straight line so that both can be joined in a straight line. Furthermore, it is preferable that the protrusion 51 has a shape that fits both the locking surface 24 and the flange surface 25 of the first tube member 100 while being in contact therewith.

  A septum 53 made of an elastic material such as rubber is filled in the inner front portion of the connecting tube portion 50 and fixed by a holding member 55. A slit 54 is formed at the center of the septum 53 to allow the connecting tube portion 12 of the first tube member 100 to penetrate the housing portion 60. The septum 53 has an elastic force that makes both the ease of insertion of the connecting pipe portion 12 and the sealing performance after the connecting pipe portion 12 is pulled out appropriate.

The first pipe member 100 and the second pipe member 200 described above are connected as shown by the arrows in FIG. 2 and are connected as shown in FIG. That is, the connecting tube portion 50 of the second tube member 200 is inserted inside the outer tube 20 of the first tube member 100, and the connecting tube portion 12 of the first tube member 100 is connected to the septum of the second tube member 200. 53 is in a state of being accommodated in the accommodating portion 60. Further, the protrusion 51 of the second tube member 200 is fitted to the locking portion 26 of the first tube member 100, and the flange surface 25 of the locking portion 26 and the protrusion 51 are joined in a straight line and engaged. ing. Thereby, even if both members 100 and 200 are shifted within the range of the length of the linear joint portion, their engagement is not released, and the connection between the two members 100 and 200 is more stable.
In the connection device 1 in the connected state shown in FIG. 1, the fluid flows through the flow pipe 10 of the first pipe member 100 and flows from the connection pipe part 12 to the accommodating part 60 of the second pipe member 200. .

FIG. 6 is an enlarged view of a portion A in FIG. 1 for explaining an engaged state when the first tube member 100 and the second tube member 200 are connected. Here, only the protrusion 51 is displayed on the second pipe member 200. As shown in FIG. 6, the protrusion 51 is inserted into the locking portion 26, and the flange surface 25 of the locking portion 26 and the protrusion 51 are linearly joined and engaged as described above.
In addition to this, the locking surface 24 of the locking portion 26 is formed in a straight line in a direction substantially perpendicular to the tube axis direction, and the surface of the protrusion 51 that engages with the locking surface 24 is also formed in a straight line. In this case as well, both are linearly joined and engaged.
Further, here, the locking surface 24 and the flange surface 25 are formed so as to form an acute angle, and the projection 51 is fitted in close contact with both the locking surface 24 and the flange surface 25. Understandable.
According to the configuration as described above, the protrusion 51 is more difficult to be detached from the locking portion 26, so that the connection between the first tube member 100 and the second tube member 200 is further stabilized.

Furthermore, when these two pipe members are connected to at least one of the first pipe member 100 or the second pipe member 200, the protrusion 51 is pressed or closely attached to the locking portion 26, particularly the locking surface 24 thereof. It is preferable to provide an elastic body that biases in the direction. This is because the engagement between the locking portion 26 and the protrusion 51 becomes stronger. The septum 39 disposed at the inner front portion of the connecting tube portion 50 of the second pipe member 200 acts as this elastic body.
In addition, a coil spring is arranged coaxially with the connection tube portion 12 inside the outer tube body 20 of the first tube member 100, and the coil spring is brought into contact with the connection tube portion 50 of the second tube member 200. In addition, the same effect as that of the septum 39 can be obtained.

  As described above, when the medical connecting device 1 configured by the first tube member 100 and the second tube member 200 is used, the first tube member 100 and the second tube member 200 are connected to each other. The connection between the first tube member 100 and the second tube member 200 is difficult to disconnect even when the connection becomes stronger and torque acts in the direction of loosening the connection force. Therefore, the medical safety is greatly improved by using the connection device 1 for a connection part such as when a drug solution, nutrient, anticancer agent, physiological saline, blood, or the like is administered to a person.

The figure which shows the connection state of the medical connection instrument which concerns on embodiment of this invention. The exploded view of the connection instrument of FIG. The top view of the 1st pipe member which comprises the connecting device of FIG. 1, a side view, and sectional drawing. The top view of the 2nd pipe member which comprises the connecting device of FIG. 1, a side view, and a front view. Sectional drawing of the 2nd pipe member which comprises the connecting device of FIG. The A section enlarged view of FIG. 1 explaining the engagement state at the time of connection of a 1st pipe member and a 2nd pipe member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Medical connection instrument, 10 ... Distribution pipe, 11 ... Base pipe part, 12 ... Connection pipe part, 13 ... Intermediate pipe part, 20 ... Outer cylindrical body, 21 ... Bottom part, 22 ... Tip peripheral part, 23 ... Groove , 24 ... locking surface, 25 ... saddle surface, 26 ... locking portion, 50 ... connecting tube portion, 51 ... projection, 53 ... septum, 54 ... slit, 55 ... holding member, 60 ... housing portion, 70, 80, 90 ... communication part, 100 ... 1st pipe member, 200 ... 2nd pipe member.

Claims (4)

  1. A first tube member capable of passing liquid and a second tube member capable of passing liquid;
    The first pipe member includes a flow pipe capable of flowing a liquid, and an outer cylindrical body formed on the outer side of the flow pipe coaxially with the flow pipe and connected to the flow pipe. A locking portion defined by a groove for locking the second tube member is disposed opposite to the circumferential edge of the distal end of the tube, and a locking surface corresponding to a force in the tube axis direction is provided on the locking portion. A flange surface extending from the locking surface and corresponding to a circumferential force is formed;
    The second tube member includes a connection tube portion that can be inserted inside the outer tube body of the first tube member, and a protrusion that is inserted into the groove that is disposed to face the outer peripheral surface of the connection tube portion. A projection having two surfaces that can be engaged with the locking surface and the flange surface, respectively, and a flow tube tip of the first tube member formed inside the connection tube portion can be accommodated. An accommodating portion and a communicating portion communicating with the accommodating portion,
    The hook surfaces and the engaging surfaces of the locking surface and the protrusions are linearly formed so as to be joined to each other in a straight line ,
    A medical connection device , wherein an outer peripheral portion of the projection facing the intersection of the two surfaces is chamfered, and a portion of the groove facing the chamfered outer peripheral portion is formed in an arcuate shape .
  2.   The locking surface and the flange surface are formed so as to form an acute angle, and the protrusion has a shape that fits in contact with both the locking surface and the flange surface. The medical connection apparatus according to 1.
  3.   At least one of the first tube member or the second tube member is provided with an elastic body that urges the projection in a direction to press the projection against the locking surface when the two tube members are connected. The medical connection instrument according to claim 1 or 2.
  4. The elastic body is a septum having a sealing property filled inside the connecting tube portion of the second pipe member, and the septum is formed with a slit through which the leading end portion of the flow pipe of the first pipe member is passed. The medical connecting device according to claim 3.
JP2005101285A 2005-03-31 2005-03-31 Medical connection device Active JP4647365B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005101285A JP4647365B2 (en) 2005-03-31 2005-03-31 Medical connection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005101285A JP4647365B2 (en) 2005-03-31 2005-03-31 Medical connection device
PCT/EP2006/002909 WO2006103074A1 (en) 2005-03-31 2006-03-30 Connector for medical applications

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JP2006280452A JP2006280452A (en) 2006-10-19
JP4647365B2 true JP4647365B2 (en) 2011-03-09

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WO (1) WO2006103074A1 (en)

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Also Published As

Publication number Publication date
JP2006280452A (en) 2006-10-19
WO2006103074A1 (en) 2006-10-05

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