WO2010095547A1 - 医療用針装置 - Google Patents
医療用針装置 Download PDFInfo
- Publication number
- WO2010095547A1 WO2010095547A1 PCT/JP2010/051952 JP2010051952W WO2010095547A1 WO 2010095547 A1 WO2010095547 A1 WO 2010095547A1 JP 2010051952 W JP2010051952 W JP 2010051952W WO 2010095547 A1 WO2010095547 A1 WO 2010095547A1
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- WO
- WIPO (PCT)
- Prior art keywords
- protector
- sheath
- convex
- injection needle
- needle
- Prior art date
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- 0 CC1*CCCC1 Chemical compound CC1*CCCC1 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0618—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for protecting only the distal tip of the needle, e.g. a needle guard
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0631—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders having means for fully covering the needle after its withdrawal, e.g. needle being withdrawn inside the handle or a cover being advanced over the needle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
- A61M25/0637—Butterfly or winged devices, e.g. for facilitating handling or for attachment to the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3245—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3247—Means to impede repositioning of protection sleeve from needle covering to needle uncovering position
- A61M2005/3249—Means to disalign the needle tip and the distal needle passage of a needle protection sleeve
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/582—Means for facilitating use, e.g. by people with impaired vision by tactile feedback
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M2205/00—General characteristics of the apparatus
- A61M2205/58—Means for facilitating use, e.g. by people with impaired vision
- A61M2205/583—Means for facilitating use, e.g. by people with impaired vision by visual feedback
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES 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
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; 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
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
- A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
Definitions
- the present invention relates to a medical needle device that has a wing portion that is used on a patient's skin via an adhesive tape, for example, used in the treatment of infusion, blood transfusion, extracorporeal blood circulation, and the like.
- Medical needle devices that have wings that are used on treatments such as hemodialysis therapy such as infusion, blood transfusion, extracorporeal blood circulation, and the like, are fixed on a patient's skin via an adhesive tape.
- the medical needle device is extrapolated to the needle base 10 with the injection needle 11 attached to the distal end portion 10 a and the tube 40 fitted to the rear end 10 b, and the needle base 10.
- a pair of wing parts 21 and 22 are coupled to both the left and right side surface parts, and a substantially cylindrical sheath part 20 that supports the needle base part 10 inside is provided.
- Convex ridges 23 and 26 and grooves 24 and 25 are formed on the surfaces of the wings 21 and 22, and when the wings 21 and 22 are overlaid, as shown in FIG. The groove 24 and the protrusion 26 are engaged with each other.
- Such a medical needle device secures the blood vessel by puncturing the injection needle 11 into the blood vessel of the patient, and then fixes the pair of spread wings 21 and 22 to the patient's skin surface with an adhesive tape (not shown). After the therapy is finished, the injection needle 11 is removed from the patient and discarded with the cap 30 fitted on the injection needle 11 as shown in FIG.
- the injection needle may be pierced by the finger holding the cap 30 by mistake. So it is a problem from the perspective of infections such as AIDS and hepatitis.
- FIGS. 17 to 22 a medical needle device as shown in FIGS. 17 to 22 is disclosed (for example, refer to Patent Document 1).
- Patent Document 1 As shown in FIGS. 17 and 18, a needle base 10 having a distal end 10 a fitted with an injection needle 11 and a rear end 10 b fitted with a tube 40, and the needle base 10, are shown. And a protector 50 that is slidable back and forth from a puncture position where the injection needle 11 protrudes to a storage position where the injection needle 11 is stored, and a pair of wings 51, 52 coupled to the left and right side surfaces. Is described.
- two shallow grooves 10c are provided on the outer periphery of the distal end portion 10a of the needle base 10 at positions different from each other by 180 ° in the circumferential direction, and a recessed portion 10d that is one step deeper on the distal end side and the rear end side of the groove 10c. , 10e are provided.
- a recessed portion 10d that is one step deeper on the distal end side and the rear end side of the groove 10c. , 10e are provided.
- two hooking projections 50b are provided so as to project.
- the latching protrusion 50b is fitted into the recess 10d on the distal end portion 10a side of the needle base 10 before use of the medical needle device (FIG.
- the medical needle device when the medical needle device is used, It moves so that it may pass along the groove
- the latching protrusion 50b is again moved so as to pass through the groove 10c of the needle base 10 and is again fitted into the recess 10d on the tip 10a side of the needle base 10.
- the injection needle 11 may be covered with a cap (not shown) before using the medical needle device.
- a wing portion 51, 52 is formed integrally with the needle base portion 10 and a protector 60 is provided separately from this.
- the protector 60 is formed with a slit 60c extending toward the rear end portion 60a and opening at the rear end portion 60a, and is latched on the inner surface of the rear end portion 60a of the half-cylinder portion partially divided by the slit 60c.
- the protrusions 60b are provided in a protruding manner.
- the protector 60 can slide back and forth with respect to the needle base 10 from a puncture position (FIG. 21) where the injection needle 11 protrudes to a storage position (FIGS. 19 and 20) where the injection needle 11 is stored. 52 is put in a state protruding from the slit 60c.
- the protector 50 and the wing parts 51 and 52 are integrated, they must be formed of the same material. That is, since the wing portions 51 and 52 are required to be flexible, the protector 50 must be formed of a flexible soft material. Therefore, even if the injection needle 11 is covered with the protector 50, the possibility that the injection needle 11 penetrates the side surface of the protector 50 and pierces the finger of a doctor or the like cannot be denied, and it is difficult to say that the safety is high.
- an object of the present invention is to provide a medical needle device that can prevent the injection needle from being stuck in a finger and can be easily molded.
- the medical needle device (71) has an injection needle (11) attached to the tip and a tube (40) fitted to the rear end.
- a cylindrical base that is extrapolated to the needle base (10) and the needle base (10) and has a pair of wings (51, 52) coupled to the left and right side surfaces to support the needle base (10) inward.
- the sheath (80, 92) and the needle base (10) and the sheath (80, 92) are moved back and forth from the puncture position where the injection needle (11) protrudes to the storage position where the injection needle (11) is stored.
- a medical needle device (71) comprising a protector (82, 89, 94, 99) that is slidable on the sheath (80, 92),
- the protector (82, 89, 94, 99) includes an annular front part (82a, 89a, 94a, 99a) through which the injection needle (11) penetrates and an annular rear part (through the tube (40) ( 82b, 89b, 94b, 99b) and a pair of wing parts (51, 52) of the sheath part (80, 92) are projected to form a space that allows the sheath part (80, 92) to slide.
- Sheath (80 Characterized in that formed on the outer peripheral surface and the front and rear sides of the protector (82,89,94,99) of 92).
- the protector (82) comprises two upper and lower half-cracked portions (83, 84), and the sheath portion (80) is sandwiched from above and below. A space is formed between the half-cracked portions (83, 84) that allows the sheath (80) to slide.
- the position restricting mechanism includes a convex portion (81) formed on an outer peripheral surface of the sheath portion (80), and a protector (82). Formed on the front side and the rear side, respectively, formed of a locking hole (85) that fits into the convex portion (81), formed on the front side and the rear side of the upper half-cracked portion (83) of the protector (82)
- a guide groove (87) for guiding the convex portion (81) back and forth during the sliding is formed between the locking holes (85).
- the medical needle device (71) according to claim 4 is characterized in that the upper and lower half-cracked portions (83, 84) have the same shape.
- the connecting part (90) of the protector (89) is provided only between the upper part of the front part (89a) and the upper part of the rear part (89b).
- the position restricting mechanism is provided on the front and rear sides of the convex portion (81) formed on the outer peripheral surface of the sheath portion (80) and the connecting portion (90) of the protector (89).
- Each is formed of a locking hole (85) fitted into the convex portion (81), and between the locking holes (85) formed on the front side and the rear side of the connecting portion (90),
- a guide groove (87) for guiding the convex portion (81) back and forth during sliding is formed.
- the connecting portion (95) of the protector (94) includes the left and right side surfaces of the front portion (94a) and the left and right sides of the rear portion (94b).
- the position restricting mechanism includes two convex portions (93) formed on the left and right side surfaces of the outer peripheral surface of the sheath portion (92), and the protector (94).
- the two connecting portions (95) are formed on the front side and the rear side of the two connecting portions (95), respectively.
- the engaging holes (97) are fitted into the two projecting portions (93).
- Guide grooves (98) for guiding the convex portion (93) back and forth during the sliding are formed between the locking holes (97) formed on the side.
- the medical needle device (71) includes a needle base (10) having an injection needle (11) attached to the tip and a tube (40) fitted to the rear end, and the needle.
- a tubular sheath (92) that is extrapolated to the base (10) and has a pair of wings (51, 52) coupled to the left and right side surfaces to support the needle base (10) inward, and the needle base (10)
- the sheath (92) can be slid back and forth from the puncture position where the injection needle (11) protrudes to the storage position where the injection needle (11) is stored.
- a medical needle device (71) provided with a protector (99) to be covered includes an annular front part (99a) through which the injection needle (11) penetrates, a half-cracked rear part (99b) in which a lower part into which the tube (40) is fitted is cut, Two connecting portions (95) for connecting the left and right side surfaces of the front portion (99a) and the left and right side surfaces of the rear portion (99b), respectively, and a pair of wing portions (51) of the sheath portion (92) , 52) protrudes from below the connecting portion (95) to allow the sheath (92) to slide, and is made of a material harder than the sheath (92), and the puncture position And a position restricting mechanism for positioning and fixing the sheath (92) with respect to the protector (99) at the storage position, two protrusions formed on both left and right sides of the outer peripheral surface of the sheath (92).
- Guide grooves (98) for guiding the convex portion (93) back and forth during the sliding are formed between the locking holes (97) formed on the front side and the rear side, respectively.
- the medical needle device (71) according to claim 8 is provided so that the medical needle device (71) is relatively positioned above and above the pair of wings (51, 52) of the sheath (80) at the puncture position and the storage position.
- the protector (82) is provided with a cover (101) that narrows the distance (S) from the part of the protector (82) that faces it.
- the medical needle device (71) according to claim 9 is provided in the storage position inside the rear part (84) of one of the upper and lower half-cracked portions (83, 84) of the protector (82). Inclined protrusions (102, 103) for inclining the sheath (80) are provided, and the tip of the injection needle (11) is brought into contact with the front inside of the protector (82). .
- the cross-sectional internal shape of the portion covered with the sheath portion (80) in the upper half-cracked shape portion (83) of the protector (82) is a fan shape or an inverted trapezoidal shape corresponding to the cross-sectional shape of the sheath portion (80). It is characterized by that.
- the ring here means that it is spatially closed, and does not include, for example, a substantially ring that is partially cut out, such as a letter C. Moreover, if it is spatially closed, it shall include other than a perfect circle.
- the protector includes an annular front part through which the injection needle penetrates and an annular rear part through which the tube penetrates, and a state in which the injection needle protrudes. Since the position restricting mechanism for positioning and fixing the sheath with respect to the protector is formed at the puncture position and the storage position for storing the injection needle, after the medical needle device is discarded and fixed at the storage position The injection needle is difficult to protrude again and is safe. That is, since the front part and the rear part of the protector are closed, the amount of deformation of the protector when it is positioned and fixed at the puncture position and the storage position is limited, and the fitting force is high.
- the protector is made of a material harder than the sheath, so that it does not break through the side surface of the protector and is safe.
- the protector is composed of two upper and lower half-cracked portions, so that the protector can be easily molded. . That is, by forming the protector from two parts, it is possible to avoid the formation of a so-called undercut portion on the mold, so that molding is easy. In addition, since the sheath part is sandwiched and covered by the upper and lower half-cracked parts from above and below, the assembly is easy.
- the position regulating mechanism includes a convex portion formed on the outer peripheral surface of the sheath portion, Since it is formed on the front side and the rear side of the protector and is formed of a locking hole that fits into the convex portion, the sheath portion can be reliably positioned and fixed with respect to the protector at the puncture position and the storage position. Therefore, it is safe because the injection needle does not inadvertently enter the protector and does not protrude from the protector.
- the sheath since a guide groove that guides the convex part back and forth during sliding is formed, even if force is applied to the sheath and wings in the rotational direction during sliding, the sheath does not rotate about the axis around which the protector extends. . That is, since the convex portion is in the guide groove during sliding, the sheath portion does not rotate.
- the position of the convex portion moves from the locking hole to the guide groove, and from the guide groove to the locking hole to regulate the position, the convex portion moves from the locking hole to the guide groove and from the guide groove to the locking hole. In this case, the state at the time of operation can be recognized by a tactile sensation of contact with the protector of the convex portion. Therefore, since the fitting state of the sheath and the protector can be confirmed not only by normal visual but also by tactile sense, it is safer.
- the two upper and lower half-cracked portions have the same shape, so that the protector is molded. It is only economical to prepare one type of mold. In addition, it is easy to manage parts before assembling the medical needle device.
- the connecting part of the protector connects only between the upper part of the front part and the upper part of the rear part, Since the engaging holes are formed on the front side and the rear side of the connecting portion, even if the protector is made of one part, there is no undercut shape and molding is relatively easy. In addition, since the protector consists of only one part, the cost is low.
- the connecting portion of the protector is the two connecting the left and right side surfaces of the front portion and the left and right side surfaces of the rear portion, respectively, and the position restricting mechanism is , Two convex portions formed on the left and right side surfaces of the outer peripheral surface of the sheath portion, and formed of locking holes formed on the front side and the rear side of the two connecting portions of the protector, and fitted into the two convex portions, Since the guide groove for guiding the convex part back and forth during the sliding is formed between the locking holes formed on the front side and the rear side of the two connecting parts, the effect of the invention of claim 1 is obtained. In addition, the fitted state between the needle base and the tube can be visually confirmed. Moreover, since the protector consists of only one part, the cost is low.
- the protector includes an annular front part through which the injection needle penetrates and a half-cracked rear part in which a lower part into which the tube is fitted is cut out, Since the position restricting mechanism that positions and fixes the sheath to the protector is formed at the puncture position where the injection needle protrudes and the storage position where the injection needle is stored, after fixing the medical needle device at the storage position when the medical needle device is discarded The injection needle is difficult to protrude again and is safe. In other words, since only the lower part of the rear part of the protector is cut out, the amount of deformation of the protector when it is positioned and fixed at the storage position is limited compared to the case where the two directions of the circumference are cut out. The fitting force is high.
- the protector is made of a material harder than the sheath portion, the tip of the injection needle does not break through the side surface of the protector at the storage position, which is safe.
- the protector includes a half-cracked rear part with the lower part cut off, and two connecting parts that connect the left and right side surfaces of the front part and the left and right side surfaces of the rear part, respectively.
- the integrated body of the injection needle, the needle base portion, and the sheath portion can be fitted to the protector after the injection needle is passed through the front portion of the protector. Therefore, the assembly of the medical needle device is simple.
- the position restricting mechanism is formed on the left and right side surfaces of the outer peripheral surface of the sheath part, and on the front side and the rear side of the two connecting parts of the protector, and is engaged with the convex part.
- the sheath Since it consists of holes, the sheath can be reliably positioned and fixed with respect to the protector at the puncture position and the storage position. Therefore, it is safe because the injection needle does not inadvertently enter the protector and does not protrude from the protector. And since the guide groove which guides a convex part back and forth at the time of a slide was formed, even if force is applied to a sheath part or a wing part in the direction of rotation at the time of a slide, a sheath part does not rotate to a protector. That is, since the convex portion is in the guide groove during sliding, the sheath portion does not rotate. In addition, since there is no portion that interferes with the convex portion during sliding, the operability is good.
- the convex portion moves from the locking hole to the guide groove, and from the guide groove to the locking hole to regulate the position.
- the convex portion moves from the locking hole to the guide groove and from the guide groove to the locking hole.
- the state at the time of operation can be recognized by a tactile sensation at the time of contact with the convex protector. Therefore, since the fitting state of the sheath and the protector can be grasped not only by normal visual confirmation but also by tactile confirmation, it is safer.
- the protector consists of only one part, the cost is low.
- the cover is provided on the protector so as to narrow the distance between the upper part of the pair of wing parts coupled to the sheath part and the protector. Even if a strong force is applied to the part in the direction in which they rotate, that is, a force large enough to release positioning and fixing by the position restriction mechanism, the wing part immediately contacts the cover, preventing further rotation. Is done. If the distance between the upper part of the wing part and the cover is set as small as possible within the range in which the sheath part can be slid, the movement in the rotational direction can be suppressed to be small, which is effective. Further, if the cover is provided to such an extent that the tip of the injection needle is hidden, a psychological reassurance to the operator can be obtained when the injection needle is hidden.
- an inclined protrusion is provided in the rear interior of one of the upper and lower half-cracked portions of the protector, and the sheath portion is inclined at the storage position. Since the tip of the injection needle is brought into contact with the front inside of the protector, the tip of the injection needle is supported in addition to the sheath inside the protector. Therefore, the front / rear and left / right movements of the tip of the injection needle are reliably prevented at the storage position, which is further safer.
- the outer shape of the cross section of the sheath portion is a fan shape or a reverse trapezoidal shape narrowed so as to narrow from the upper side to the lower side, and the protector is placed on the sheath portion. Since the cross-sectional internal shape of the upper half-cracked portion is also a fan shape or an inverted trapezoidal shape corresponding to the cross-sectional shape of the sheath portion, movement of the sheath portion in the rotational direction is also prevented by the shape of the protector.
- the protector and the wing part are separate parts, and the front part and the rear part of the protector are closed, the fitting force between the protector and the sheath part is high, and it is safely discarded after use.
- the point which can be done is not described in Patent Document 1 described above.
- FIG. 1 It is a perspective view showing a medical needle device concerning a first embodiment of the present invention. It is a disassembled perspective view which shows the medical needle device shown in FIG. It is the perspective view which accommodated the injection needle in the medical needle device shown in FIG. It is an expanded sectional view which shows the principal part of the sheath part in the medical needle device shown in FIG. It is a perspective view showing another medical needle device concerning a first embodiment of the present invention. It is a disassembled perspective view which shows the medical needle device shown in FIG. It is a perspective view which shows the medical needle device which concerns on 2nd embodiment of this invention. It is a perspective view which shows the protector in the medical needle device shown in FIG. It is a perspective view which shows the sheath part in the medical needle device shown in FIG.
- FIG. 1 It is a perspective view which shows the medical needle device which concerns on 3rd embodiment of this invention. It is a figure which shows the protector in the medical needle device which concerns on 3rd embodiment of this invention, (a) is a front perspective view, (b) is a back perspective view. It is a perspective view which shows the sheath part in the medical needle device shown in FIG. It is a figure which shows the protector in the medical needle device which concerns on 4th embodiment of this invention, (a) is a front perspective view, (b) is a back perspective view. It is a top view which shows the medical needle apparatus which concerns on a prior art example. It is a side view which shows the time of use of the medical needle device shown in FIG.
- FIG. 20 It is a top view which shows after use of the medical needle device shown in FIG. It is a cross-sectional view showing a medical needle device according to another conventional example. It is a cross-sectional view which shows the time of protrusion of an injection needle of the medical needle device shown in FIG. It is a cross-sectional view showing a medical needle device according to still another conventional example. It is a longitudinal cross-sectional view which shows the medical needle device shown in FIG. FIG. 20 is a cross-sectional view showing the medical needle device shown in FIG. 19 when the injection needle protrudes. It is a side view which shows the protector in the medical needle device shown in FIG.
- FIG. 1 It is an expanded sectional view showing an important section of another sheath part in a medical needle device concerning a first embodiment of the present invention.
- the medical needle apparatus 71 which concerns on 1st embodiment of this invention is demonstrated.
- the medical needle device 71 includes a needle base portion 10, a sheath portion 80, and a protector 82 that are configured as separate parts.
- the needle base portion 10 is made of PC (polycarbonate), and an injection needle 11 is attached to the tip and a tube 40 is fitted to the rear end.
- the injection needle 11 is made of SUS (stainless steel), and the tube 40 is made of PVC (vinyl chloride resin).
- the sheath 80 is made of PE (polyethylene), and is a substantially cylindrical part that is extrapolated to the needle base 10 and has a pair of wings 51 and 52 coupled to the left and right side surfaces and supports the needle base 10 inward. is there. Further, as shown in FIG. 4, two convex portions 81 are formed on the front and back of the outer peripheral surface of the sheath portion 80.
- the rear part 81b of each convex part 81 has a tapered shape in which the protruding amount from the outer peripheral surface of the sheath part 80 gradually increases from the rear to the front, and the front part 81a of each convex part 81 It is a substantially vertical wall surface at the upper part of the outer peripheral surface.
- the height of the convex portion 81 is set to a height having a resistance that can release the fitted state when fitted to a locking hole 85 described later.
- the wing convex portions 23 and 26 and the wing concave portions 24 and 25 are formed on the surfaces of the wing portions 51 and 52, and when the wing portions 51 and 52 are overlapped, the wing convex portion 23 and the wing concave portion 25 The concave portion 24 and the wing convex portion 26 are engaged with each other.
- the protector 82 is formed of a material harder than the sheath portion 80, for example, PC (polycarbonate) harder than the tip of the injection needle 11, and includes two upper and lower half-cracked portions 83 and 84 having the same shape.
- the upper and lower half-cracked portions 83 and 84 are covered with the sheath portion 80 sandwiched from above and below, and a pair of wing portions 51 and 51 coupled to the sheath portion 80 between the half-crack-shaped portions 83 and 84.
- a space that allows the sheath 80 to slide in a state in which the protrusion 52 is projected is formed.
- the sheath part 80 together with the needle base 10, as shown in FIG. 1, from the puncture position where the injection needle 11 protrudes forward from the protector 82, as shown in FIG. 11 can be slid in the front-rear direction to the storage position for storing 11 in the protector 82.
- the protector 82 In a state where the two half-cracked portions 83 and 84 are coupled, the protector 82 includes a pair of an annular front portion 82a through which the injection needle 11 penetrates, an annular rear portion 82b through which the tube 40 penetrates, and a sheath portion 80.
- a connecting portion 86 is provided for connecting the front portion 82a and the rear portion 82b in a state in which a space allowing the sheath portion 80 to slide is formed by projecting the wing portions 51 and 52.
- the connecting portion 86 extends from the front portion 82a of the protector 82 to the rear portion 82b, connects the upper portions and the lower portions of the front portion 82a and the rear portion 82b, and between the upper right side and the lower right side of the protector 82, and the upper left side.
- a gap through which the wing parts 51 and 52 can pass is formed between the left side and the lower left side.
- locking holes 85 that fit into the convex portions 81 of the sheath portion 80 are formed, respectively.
- the locking hole 85 is large enough to accommodate one convex portion 81.
- the convex portion 81 formed on the front upper side of the outer peripheral surface of the sheath portion 80 is fitted into the locking hole 85 formed on the front front side of the protector 82, and at the storage position, the rear upper portion of the outer peripheral surface of the sheath portion 80 is The convex portion 81 formed on the side fits into the locking hole 85 formed on the upper rear side of the protector 82.
- a guide groove for guiding the convex part 81 back and forth between the two locking holes 85 formed on the front side and the rear side of the upper half-cracked part 83 of the protector 82 when the sheath part 80 slides. 87 is formed.
- the width of the guide groove 87 is substantially the same as the width of the convex portion 81 so that the sheath portion 80 does not rotate around the longitudinal axis in which the protector 82 extends.
- the distance between the front locking hole 85 and the guide groove 87 formed in the sheath 80 and the distance between the rear locking hole 85 and the guide groove 87 are the convexities formed before and after the sheath 80.
- the interval between the portions 81 is substantially equal, and when one convex portion 81 is fitted in the locking hole 85, the other convex portion 81 exists in the guide groove 87.
- the half-cracked portions 83 and 84 of the protector 82 have the same shape, the locking hole 85 and the guide groove 87 are also formed below the protector 82 where the convex portion 81 of the sheath portion 80 does not exist. However, even if these are present, problems such as strength do not occur. Further, insertion convex portions 83a and 83a (the insertion convex portion 83a at the lower front portion extends in the front-rear direction and the insertion at the lower rear portion is provided at the lower front portion and the rear lower portion on the right side of the upper half-cracked portion 83, respectively.
- the insertion protrusions 83a extend to the left and right), and the insertion protrusions 83a and 83a are formed on the insertion recesses 84b and 84b respectively formed on the right front part and rear part of the lower half-cracked part 84. It is fitted.
- the insertion convex parts 84a and 84a (the front part upper insertion convex part 84a extends in the front-rear direction and the rear part upper part.
- the insertion projections 84a extend in the left and right directions), and the insertion projections 84a and 84a are formed in the insertion recesses 83b and 83b respectively formed in the left front part and the rear part of the upper half-cracked part 83. Are fitted together.
- support portions having a shape protruding so as to protrude right and left so that a doctor or the like can easily grip the protector 82 when the sheath portion 80 is slid with respect to the protector 82. 88 is provided.
- the sheath 80 to which the wings 51 and 52 are coupled receives a binding force against rotation in the circumferential direction, but the injection needle 11, the needle base 10, and the tube 40. Since it does not receive a restraining force, it is possible to freely change the direction of the blade surface of the injection needle 11 in order to ensure sufficient blood flow.
- the front convex portion 81 provided on the upper surface of the sheath portion 80 is fitted into the locking hole 85 formed in the front portion 82 a of the protector 82, and the injection needle 11 is protruded.
- the medical needle device 71 is provided to a hospital or the like.
- a cap (not shown) is fitted to the injection needle 11.
- the cap is removed from the injection needle 11 and held in a state where the pair of wing portions 51 and 52 are overlapped, and the injection needle 11 is punctured into the blood vessel of the patient to ensure blood flow.
- the portion of the injection needle 11 is rotated to change the direction of the blade surface.
- the pair of wings 51 and 52 are spread and both wings 51 and 52 are brought into contact with the patient's skin surface to adhere both wings 51 and 52 and the patient's skin surface. Secure with tape (not shown).
- the injection needle 11 is removed from the patient.
- the sheath portion 80 is slid rearward with respect to the protector 82 and is provided on the upper surface of the sheath portion 80 in the locking hole 85 formed in the rear portion 82b of the protector 82 as shown in FIG.
- the rear projection 81 is fitted, and the injection needle 11 is stored in the protector 82 at the storage position.
- the rear convex portion 81 formed on the upper surface of the sheath portion 80 is replaced by a guide formed on the connecting portion 86 provided on the upper half-cracked portion 83 of the protector 82. Since the sheath 80 is slid rearward with respect to the protector 82 along the groove 87, the injection needle 11 is pulled straight rearward and stored in the protector 82.
- the protector 82 since the rear portion 82b of the protector 82 is closed in a ring shape, the sheath portion 80 will not be detached from the protector 82 when there is a large force when sliding the sheath portion 80 backward with respect to the protector 82. .
- the protector 82 is made of a material harder than the sheath 80, so that the tip of the injection needle 11 is The side of the protector 82 is not pierced.
- the sheath 80 is positioned and fixed to the protector 82 at the puncture position where the injection needle 11 protrudes from the protector 82 and the storage position where the injection needle 11 is stored in the protector 82. Since the position restricting mechanism is formed, the movement of the injection needle 11 in the front-rear direction is restricted when the medical needle device 71 is used and discarded. In particular, at the time of disposal, the injection needle 11 fixed at the storage position is prevented from protruding outward from the protector 82, which is safe.
- the front part 82a and the rear part 82b of the protector 82 covering the sheath part 80 are respectively closed in an annular shape, even if an excessive force is applied when the sheath part 80 is slid from the puncture position to the storage position, the wing The parts 51 and 52 interfere with the rear part 82 b, and the sheath part 80 does not separate from the protector 82.
- the amount of deformation of the rear portion 82b is limited as compared with the conventional example (FIGS. 19 to 22) in which the rear portion 82b of the protector 82 is partially opened, the sheath portion that is positioned and fixed at the storage position The fitting force at 80 is large. Thus, since the possibility that the injection needle 11 is exposed is low, the medical needle device 71 can be safely discarded.
- the protector 82 is made of a material harder than the sheath portion 80, the tip of the injection needle 11 should be attached to the protector 82 in the unlikely event that the sheath portion 80 is slid from the puncture position to the retracted position. Even if the situation of abutting the side surface occurs, the protector 82 is not pierced.
- the protector 82 is composed of two upper and lower half-cracked portions 83 and 84, it is possible to avoid a so-called undercut portion from being formed on the mold when the protector 82 is molded, and therefore, molding is facilitated.
- the upper and lower half-cracked portions 83 and 84 have the same shape, so it is only necessary to prepare one type of mold for molding the protector 82, and the medical needle device 71 can be manufactured at low cost. it can. Moreover, parts management before the assembly of the medical needle device 71 can be easily performed.
- the position regulating mechanism includes two front and rear projections 81 formed on the upper outer peripheral surface of the sheath portion 80, and a locking hole 85 that is formed on each of the front and rear sides of the protector 82 and fits the projection 81.
- the sheath 80 can be reliably positioned and fixed with respect to the protector 82 at the puncture position and the storage position. Therefore, it is safe because the injection needle 11 does not inadvertently enter the protector 82 or protrude from the protector 82.
- the convex portion 81 is moved and moved from the locking hole 85 to the guide groove 87 and from the guide groove 87 to the locking hole 85 so that the position of the convex portion 81 is controlled.
- 82 can be recognized by touching the touch. Therefore, the fitting state between the sheath portion 80 and the protector 82 can be confirmed not only by normal visual confirmation but also by tactile confirmation, so that it is safer.
- the rear portion 81b of the convex portion 81 has a tapered shape in which the protruding amount from the outer peripheral surface of the sheath portion 80 gradually increases from the rear to the front, and guides the convex portion 81 back and forth during sliding.
- the operability during sliding is good. That is, when the convex portion 81 moves from the front locking hole 85 to the guide groove 87, and when the convex portion 81 moves from the guide groove 87 to the rear locking hole 85, as shown in FIG. Since the rear part 81b of the shape is easy to get over the part between the locking hole 85 and the guide groove 87, and the convex part 81 is present in the guide groove 87, nothing interferes with the convex part 81.
- the sheath part 80 since the front part 81a of the convex part 81 provided on the sheath part 80 has a substantially vertical wall surface on the outer peripheral surface of the sheath part 80, the sheath part 80 is attached to the protector 82 once it is fixed in the storage position. On the other hand, movement to the front (left direction in FIG. 4) is restricted, and the injection needle 11 does not protrude from the front.
- the half-cracked portions 83 and 84 have the same shape at the top and bottom, but as shown in FIGS. 5 and 6, the half-cracked portions 83 and 84 do not have to have the same shape at the top and bottom.
- only one convex portion 81 may be formed on the outer peripheral surface of the sheath portion 80.
- the upper and lower widths of the space formed between the half-cracked portions 83 and 84 and projecting the wing portions 51 and 52 to the left and right to allow the sheath portion 80 to slide are set to the wing portion 51 with respect to the sheath portion 80. , 52 may be substantially equal to the thickness of the connecting portion.
- the difference of this embodiment from the first embodiment is the shape of the protector 89, and the other components are the same as those of the first embodiment. Moreover, the effect of the same component is the same as 1st embodiment.
- the connecting part 90 of the protector 89 connects only the upper part of the annular front part 89a and the upper part of the annular rear part 89b. Is a space. A pair of wing portions 51 and 52 protrude from this space (more specifically, both side surface portions), and the sheath portion 80 slides with respect to the protector 89. A support portion 91 that protrudes upward is provided on the upper portion of the annular front portion 89 a of the protector 89 so that the protector 89 can be supported when the sheath portion 80 is slid with respect to the protector 89.
- the inner diameter of the front part 89 a is smaller than the outer diameter of the injection needle 11 and the injection needle 11 penetrates
- the inner diameter of the rear part 89 b is smaller than the outer diameter of the tube 40 and the tube 40 penetrates.
- the position restricting mechanism includes one convex portion 81 formed on the upper outer peripheral surface of the sheath portion 80 shown in FIG. 9, and convex portions formed on the front side and the rear side of the connecting portion 90 of the protector 89 shown in FIG. It consists of a locking hole 85 fitted to 81. Further, a guide groove 87 for guiding the convex portion 81 back and forth when the sheath portion 80 slides with respect to the protector 89 is formed between the locking holes 85 formed on the front side and the rear side of the connecting portion 90.
- the connecting portion 90 of the protector 89 connects only between the upper portion of the front portion 89a and the upper portion of the rear portion 89b of the protector 89, and the front side and the rear side of the connecting portion 90. Therefore, even if the protector 89 is made of a single part, there is no undercut shape and molding is relatively easy. In addition, since the protector 89 consists of only one part, the cost is low.
- the difference of this embodiment from the first embodiment is the position of the convex portion 93 of the sheath portion 92 and the shape of the protector 94, and the other components are the same as those of the first embodiment. Moreover, the effect of the same component is the same as that of 1st embodiment.
- the connecting portion 95 of the protector 94 is two members that connect the left and right side surfaces of the annular front portion 94 a and the left and right side surfaces of the annular rear portion 94 b, respectively. Between the part 94a and the rear part 94b, the upper part and lower part other than the connection part 95 of the protector 94 are spaces. And a pair of wing
- left and right side surfaces of the rear portion 94b of the protector 94 are provided with support portions 96 protruding left and right so that a doctor or the like can grasp the protector 94 when the sheath portion 92 is slid with respect to the protector 94. Yes.
- the position restricting mechanism includes two convex portions 93 formed on the left and right side surfaces of the outer peripheral surface of the sheath portion 92 shown in FIG. 12, and the front side and the rear side of the two connecting portions 95 of the protector 94 shown in FIG. Each is formed of a locking hole 97 that fits into the two convex portions 93 formed.
- a guide groove 98 is formed between the locking holes 97 formed on the front side and the rear side of the two connecting portions 95 to guide the convex portion 93 back and forth when the sheath portion 92 slides with respect to the protector 89.
- the fitting force between the sheath portion 92 and the protector 94 is high even when the connecting portion 95 and the position regulating mechanism of the protector 94 are provided at two locations on the left and right side surfaces. Once it is positioned and fixed in the storage position, it is safe because the injection needle 11 hardly protrudes again. Moreover, since the protector 94 consists of only one part, an assembly is easy and the cost of shaping
- the protector 99 includes an annular front part 99 a through which the injection needle 11 passes, a semi-cracked rear part 99 b in which a lower part into which the tube 40 is fitted is cut, and a front part.
- Two connecting portions 95 that connect the left and right side surfaces of the portion 99a and the left and right side surfaces of the rear portion 99b are provided. That is, the rear portion 99b of the protector 94 in the third embodiment is annular, whereas the rear portion 99b of the protector 99 in the fourth embodiment is different only in that the lower portion is cut in a half crack.
- the rear part 99b of the protector 99 is in a half-cracked shape with the lower part cut away, so that the sheath 92 is attached to the needle base 10 to which the injection needle 11 is attached.
- the needle base 10, the sheath portion 92, and the tube 40 are integrated after the injection needle 11 is passed through the front portion 99 a of the protector 99 with the tube 40 fitted to the rear end of the needle base portion 10. Can be fitted from below the protector 99. Therefore, the assembly of the medical needle device 71 is simple.
- the support portions 88, 91, 96 are formed on the protectors 82, 89, 94, 99.
- the present invention is not limited to these positions, and the protectors 82, 89, 94, 99 are provided. If it is a position which is easy to support, it may be formed in any part of protector 82,89,94,99. Further, if the slide can be performed smoothly, the support portions 88, 91, and 96 may not be formed.
- one or a plurality of convex portions 81, 93 are formed on the sheath portions 80, 92, the sheath portions 80, 92 can be positioned and fixed to the protectors 82, 89, 94, 99 at the puncture position and the storage position,
- the number of the convex portions 81 and 93 is not limited as long as the sliding can be performed smoothly.
- the present invention is not limited to this, and the convex portions 81 and 93 may be substantially perpendicular to the sheath portions 80 and 92 in the same manner as the front portions 81a and 93a. Good. However, in this case, the resistance at the time of sliding becomes too large, and measures such as lowering the convex portions 81 and 93 are necessary.
- the interval between the convex portions 81, 93 is the interval between the front locking holes 85, 97 and the guide grooves 87, 98.
- the interval between the rear locking holes 85 and 97 and the guide grooves 87 and 98 is substantially equal, the interval may be longer than these intervals. That is, when one convex part 81,93 is fitted in the locking holes 85,97, the other convex part 81,93 may be an interval existing in the guide grooves 87,98.
- sheath portions 80 and 92 are molded by PC, but the present invention is not limited to this, and PP (polypropylene) or the like may be used to improve moldability.
- the two convex parts 81 and 81 were formed before and behind the outer peripheral surface upper part of the sheath part 80, as shown to Fig.23 (a), the outer peripheral surface lower part of the sheath part 80 is further shown. You may make it form the two convex parts 81 and 81 also back and front. These two convex portions 81, 81 formed at the lower portion of the outer peripheral surface of the sheath portion 80 are also formed at the front side and the rear side of the half-cracked portion 84 below the protector 82 at the puncture position and the storage position.
- the front convex part 81 is fitted into the locking hole 85 formed on the front side of the lower half-shaped part 84 at the puncture position, and the rear convex part 81 is at the storage position. Is fitted in a locking hole 85 formed on the rear side of the lower half-shaped portion 84), and the convex portion 81 is guided by the guide groove 87 when the sheath portion 80 slides. According to this, since the fitting between the sheath 80 and the protector 82 at the puncture position and the storage position is performed at two locations, the fitting force is large. Moreover, since the convex part 81 guided by the guide groove 87 at the time of the sliding of the sheath part 80 becomes two places up and down, the slide movement is further stabilized.
- the shape of the convex part 81 was made to incline linearly toward the upper surface of the convex part 81 from the outer peripheral surface of the sheath part 80 in the back part 81b (FIG. 4), but FIG. As shown in (b), the shape of the rear portion of the convex portion 81 is linearly extended from the outer peripheral surface of the sheath portion 80 to the outer peripheral surface perpendicularly to the outer peripheral surface and from the vertical wall surface 81c toward the upper surface of the convex portion 81. It may be formed by an inclined surface 81d inclined in a shape, and the entire convex portion 81 may be a pentagon.
- the convex portion 81 (the convex portion 81 on the right side in FIG. 4) located on the rear side of the upper portion of the outer peripheral surface of the sheath portion 80 is provided at the extreme end on the rear side of the sheath portion 80, and the rear portion 81b.
- the flat portion of the outer peripheral surface of the sheath portion 80 is not provided at all.
- the rear upper portion of the outer peripheral surface of the sheath portion 80 is not provided.
- the convex part 81 located on the side (the convex part 81 on the right side in FIGS.
- the pair of wing parts 51 and 52 coupled to the sheath part 80 are protruded from a gap formed between the upper and lower half-cracked parts 83 and 84 to which the protector 82 is coupled.
- the cover 82 may be provided with a cover 101 that narrows the distance S between the protector 82 and the opposite part of the protector 82.
- a total of four covers 101 are provided on the front left and right and rear left and right of the protector 82, and the distance between the upper part of the pair of wing parts 51 and 52 and the lower end of the cover 101 is defined as a distance S.
- the cover 101 has a semicircular cross section along the outer peripheral surface of the protector 82 and does not protrude outward from the outer peripheral surface of the protector 82.
- FIG. 25A shows a side surface when the cover 101 is not particularly provided for the protector 82 as a comparison. According to this, a strong force in the rotational direction in which the sheath portion 80 and the wing portions 51 and 52 rotate, that is, the fitting in which the convex portion 81 is fitted into the locking hole 85 and the positioning is fixed is released.
- the wings 51 and 52 immediately come into contact with the cover 101, so that further rotation is prevented.
- the distance S between the upper part of the wing parts 51 and 52 and the cover 101 is set as small as possible within the range in which the sheath part 80 can be slid, the movement in the rotational direction can be suppressed, which is effective. is there.
- a cover 101 having a width that hides the tip of the injection needle 11 is provided so that when the injection needle 11 is hidden, a psychological reassurance to the operator can be obtained.
- the injection needle 11 is arranged in the storage position so as to be parallel to the long axis direction of the protector 82, as shown in FIG. ) And FIG. 26 (b), the injection needle 11 may be inclined inside the protector 82 so that the tip of the injection needle 11 contacts the front inside of the protector 82.
- a slanted projection that inclines toward the rear with the sheath portion 80 being raised forward from the rear at the storage position inside the half-cracked portion 84 on the lower side of the protector 82. 26, the tip of the injection needle 11 is brought into contact with the front upper side of the protector 82.
- FIG. 26 (a) a slanted projection that inclines toward the rear with the sheath portion 80 being raised forward from the rear at the storage position inside the half-cracked portion 84 on the lower side of the protector 82. 26 the tip of the injection needle 11 is brought into contact with the front upper side of the protector 82.
- An inclined projection 103 is provided in the housing position to incline the sheath 80 from the front to the front with the rear being inclined upward, and the tip of the injection needle 11 is brought into contact with the lower front inside of the protector 82. It is a thing. That is, the sloped protrusion 102 shown in FIG. 26 (a) is linearly increased from the rear to the front, and conversely, the sloped protrusion 103 shown in FIG. The projecting amount is linearly increased from the rear toward the rear.
- the inclined protrusion 102 is provided in the rear interior of the upper half-cracked portion 82 of the protector 82 so that the tip of the injection needle 11 is brought into contact with the lower front side of the protector 82, or the inclined protrusion 103
- the tip of the injection needle 11 may be brought into contact with the inside of the front upper side of the protector 82. According to this, since the tip of the injection needle 11 is supported inside the protector 82 in addition to the sheath portion 80, the forward / backward and left / right movements of the tip of the injection needle 11 are reliably prevented at the storage position. Accordingly, even when a force in the left-right direction (lateral direction) is applied to the sheath portion 80 and the wing portions 51 and 52 made of a relatively soft material, the tip of the injection needle 11 is combined with the operation. Is prevented from operating.
- Fig.27 (a) while making the cross-sectional external shape of the sheath part 80 into a substantially circular shape, it covers the sheath part 80 in the half crack shape part 83 of the upper side of the protector 82.
- the internal cross-sectional shape of the part was made into the substantially semicircle shape corresponding to the cross-sectional shape of the sheath part 80, as shown in FIG.27 (b), the cross-sectional external shape of the sheath part 80 becomes narrow from the upper part to the lower part side.
- the cross-sectional internal shape of the portion of the half-cracked portion 83 on the upper side of the protector 82 that covers the sheath 80 is made into a fan corresponding to the cross-sectional shape of the sheath 80, or FIG.
- the outer cross-sectional shape of the sheath 80 is an inverted trapezoid that is narrowed so as to be narrowed from the upper side to the lower side, and the half-cracked portion 83 on the upper side of the protector 82 is changed to the sheath 80.
- Be covered The position of the cross-sectional internal shape may be inverted trapezoidal shape corresponding to the cross-sectional shape of the sheath 80.
- both ends of the fan-shaped part in the sheath part 80 are applied.
- both ends of the upper corner of the inverted trapezoidal portion are engaged with the upper half-cracked portion 83 and movement of the sheath portion 80 in the rotational direction is prevented, so that unexpected rotation is prevented and safety is ensured.
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Abstract
Description
医療用針装置は、例えば、図14に示すように、先端部10aに注射針11が装着されるとともに後端10bにチューブ40が被嵌された針基部10と、針基部10に外挿されるとともに左右両側面部に一対の翼部21,22が結合され内方で針基部10を支持する略円筒状の鞘部20を備えている。翼部21,22の表面には凸条23,26と条溝24,25が形成され、翼部21,22の重ね合わせ時には、図15に示すように、凸条23と条溝25が係合し、条溝24と凸条26が係合するようになっている。
ここで、針基部10の先端部10aの外周には、周面方向に180°異なる位置に二つの浅い溝10cが設けられ、溝10cの先端部側及び後端部側には一段深い凹部10d,10eが設けられている。プロテクター50の後端部50a内周には、二つの掛止突起50bが凸設されている。この掛止突起50bは、医療用針装置の使用前には、針基部10の先端部10a側の凹部10dに嵌合され(図17)、医療用針装置を使用するときには、針基部10の溝10cを通るように移動させて針基部10の後端部10b側の凹部10eに嵌合される(図18)。医療用針装置の使用後は、掛止突起50bを再び針基部10の溝10cを通るように移動させて再び針基部10の先端部10a側の凹部10dに嵌合させる。なお、医療用針装置の使用前に注射針11をキャップ(図示しない)で被うようにしてもよい。
プロテクター60には、後端部60a側に向かって延び後端部60aで開口したスリット60cが形成され、スリット60cによって部分的に二つ割りにされた半筒部の後端部60aの内面に掛止突起60bがそれぞれ凸設されている。プロテクター60は、針基部10に対して、注射針11を突出する穿刺位置(図21)から注射針11を収納する収納位置(図19,図20)まで前後にスライド可能で、翼部51,52がスリット60cから突出する状態で被せられる。
前記プロテクター(82,89,94,99)は、前記注射針(11)が貫通する環状の前方部(82a,89a,94a,99a)と、前記チューブ(40)が貫通する環状の後方部(82b,89b,94b,99b)と、前記鞘部(80,92)の一対の翼部(51,52)を突出させ前記鞘部(80,92)のスライドを可能にする空間を形成した状態で前記前方部(82a,89a,94a,99a)と前記後方部(82b,89b,94b,99b)を連結する連結部(86,90,95)を備え、前記鞘部(80,92)よりも硬質な材料からなり、しかも、前記穿刺位置及び前記収納位置にて、前記鞘部(80,92)をプロテクター(82,89,94,99)に対して位置決め固定する位置規制機構を、前記鞘部(80,92)の外周面及び前記プロテクター(82,89,94,99)の前側と後側に形成したことを特徴とする。
前記プロテクター(99)は、前記注射針(11)が貫通する環状の前方部(99a)と、前記チューブ(40)が嵌め込まれる下方部が切欠かれた半割れ状の後方部(99b)と、前記前方部(99a)の左右両側面と前記後方部(99b)の左右両側面とをそれぞれ連結する2つの連結部(95)とを備え、前記鞘部(92)の一対の翼部(51,52)を前記連結部(95)の下方から突出させ前記鞘部(92)のスライドを可能にしたもので、さらに前記鞘部(92)よりも硬質な材料からなり、しかも、前記穿刺位置及び前記収納位置にて、前記鞘部(92)を前記プロテクター(99)に対して位置決め固定する位置規制機構を、前記鞘部(92)の外周面の左右両側面に形成された2つの凸部(93)と、前記プロテクター(99)の2つの連結部(95)の前側と後側にそれぞれ形成され、前記2つの凸部(93)に嵌合する係止孔(97)からなり、前記2つの連結部(95)の前側と後側に形成された前記係止孔(97)の間に、前記スライド時に前記凸部(93)を前後に案内するガイド溝(98)をそれぞれ形成したことを特徴とする。
しかも、上述したようにプロテクターの後方部は環状に閉じているので、プロテクターに対して鞘部が後方へ移動したとき翼部がプロテクター後方部に干渉し、鞘部がプロテクターから離脱することがない。よって、注射針が露出する可能性が低く、安全に医療用針装置を廃棄できる。
仮に、収納位置にて注射針の先端がプロテクターの側面に斜めに当接する事態が発生したとしてもプロテクターは鞘部よりも硬質な材料からなるのでプロテクターの側面を突き破ることがなく、安全である。
しかも、鞘部を上下二つの半割れ形状部で上下から挟持して被せるので、組み立てが容易である。
それに加えて、スライド時に凸部を前後に案内するガイド溝を形成したので、スライド時に鞘部や翼部に回転方向に力が加わっても、鞘部がプロテクターの延びる軸回りに対して回転しない。つまり、スライド時には凸部がガイド溝に入っているので、鞘部が回転することはない。
また、凸部を係止孔からガイド溝、ガイド溝から係止孔へ移動させて位置規制するので、凸部が係止孔からガイド溝へ移動するとき、及びガイド溝から係止孔へ移動するときに、操作時における状態を凸部のプロテクターとの接触の触覚により認識可能である。したがって、鞘部とプロテクターとの嵌合状態を、通常の視覚的のみならず触覚的にも確認することができるのでより安全である。
加えて、プロテクターが一部品のみからなるのでコストが低廉である。
また、プロテクターが一部品のみからなるのでコストが低廉である。
また、プロテクターは鞘部よりも硬質な材料からなるので、収納位置にて注射針の先端がプロテクターの側面を突き破ることがなく安全である。
また、位置規制機構を、鞘部の外周面の左右両側面に形成された2つの凸部と、プロテクターの2つの連結部の前側と後側にそれぞれ形成され、凸部に嵌合する係止孔からなるので、穿刺位置及び収納位置において確実に鞘部をプロテクターに対して位置決め固定することができる。よって、注射針が不用意にプロテクターへ入ったり、プロテクターから突出したりしないので安全である。
そして、スライド時に凸部を前後に案内するガイド溝を形成したので、スライド時に鞘部や翼部に回転方向に力が加わっても、鞘部がプロテクターに対して回転しない。つまり、スライド時には凸部がガイド溝に入っているので、鞘部が回転しない。また、スライド時には凸部に干渉する部位が存在しないので、操作性が良好である。
また、凸部を係止孔からガイド溝、ガイド溝から係止孔へ移動させて位置規制するので、凸部が係止孔からガイド溝へ移動するとき、及びガイド溝から係止孔へ移動するときに、操作時における状態が凸部のプロテクターとの接触時の触覚により認識可能である。したがって、鞘部とプロテクターとの嵌合状態を、通常の視覚的確認のみならず触覚的確認によっても把握することができるのでより安全である。
また、プロテクターが一部品のみからなるのでコストが低廉である。
また、注射針の先端が隠れる程度にカバーを設けるようにすれば、注射針が隠れていると操作者への心理的な安心感が得られる。
図1乃至図4を参照して、本発明の第一実施形態に係る医療用針装置71を説明する。
この医療用針装置71は、別部品で構成された針基部10と鞘部80とプロテクター82を備えている。
なお、注射針11はSUS(ステンレス鋼)、チューブ40はPVC(塩化ビニル樹脂)からなる。
また、鞘部80の外周面上部には、図4に示すように、前後に二つの凸部81が形成されている。各凸部81の後方部81bは、後方から前方に向けて徐々に鞘部80の外周面からの突出量を大きくしたテーパー状であり、各凸部81の前方部81aは、鞘部80の外周面上部に略垂直の壁面となっている。凸部81の高さは、後述する係止孔85と嵌合した際に、嵌合状態を解除できる程度の抵抗を有する高さとする。
加えて、翼部51,52の表面には翼凸部23,26と翼凹部24,25が形成され、翼部51,52の重ね合わせ時には、翼凸部23と翼凹部25が、また翼凹部24と翼凸部26がそれぞれ係合するようになっている。
上下二つの半割れ形状部83,84は、鞘部80を上下から挟持する状態で被せられ、両半割れ形状部83,84の間に、鞘部80に結合された一対の翼部51,52を突出させた状態で鞘部80のスライドを可能にする空間を形成している。このとき、プロテクター82に対して、鞘部80は、針基部10とともに、図1に示すように、注射針11をプロテクター82から前方に突出する穿刺位置から、図3に示すように、注射針11をプロテクター82内に収納する収納位置まで前後方向にスライド可能である。
これら凸部81と係止孔85が、注射針11をプロテクター82から突出する穿刺位置及び注射針11をプロテクター82に収納する収納位置にて、鞘部80をプロテクター82に対して位置決め固定する位置規制機構として機能する。穿刺位置では、鞘部80の外周面上部前側に形成された凸部81がプロテクター82の上部前側に形成された係止孔85に嵌合し、収納位置では、鞘部80の外周面上部後側に形成された凸部81がプロテクター82の上部後側に形成された係止孔85に嵌合する。
また、上側の半割れ形状部83の右側の前方部下部と後方部下部にはそれぞれ挿着凸部83a,83a(前方部下部の挿着凸部83aは前後方向に延び、後方部下部の挿着凸部83aは左右に延びる)が形成され、挿着凸部83a,83aは、下側の半割れ形状部84の右側の前方部と後方部にそれぞれ形成された挿着凹部84b,84bに嵌め合わされている。同様に、下側の半割れ形状部84の左側の前方部上部と後方部上部にはそれぞれ挿着凸部84a,84a(前方部上部の挿着凸部84aは前後方向に延び、後方部上部の挿着凸部84aは左右に延びる)が形成され、挿着凸部84a,84aは、上側の半割れ形状部83の左側の前方部と後方部にそれぞれ形成された挿着凹部83b,83bに嵌め合わされている。
通常、図1に示すように、プロテクター82の前方部82aに形成された係止孔85に、鞘部80の上面に設けられた前側の凸部81を嵌合し、注射針11を突出させた穿刺位置にて、医療用針装置71は病院等に提供される。そのとき、注射針11が露出していると危険であるので、注射針11にはキャップ(図示しない)が嵌められている。
そして、十分な血流が得られた状態で、一対の翼部51,52を広げて両翼部51,52を患者の皮膚表面と接触させて、両翼部51,52と患者の皮膚表面を粘着テープ(図示しない)で固定する。
次に、療法終了後、注射針11を患者より抜去する。
このように注射針11を収納するとき、鞘部80の上面に形成された後側の凸部81を、プロテクター82の上側の半割れ形状部83に設けられた連結部86に形成されたガイド溝87に沿わせながら、プロテクター82に対して鞘部80を後方にスライドさせるので、注射針11は後方に真っ直に引かれてプロテクター82内に収納される。
しかも、プロテクター82の後方部82bは環状で閉じているので、プロテクター82に対して鞘部80を後方にスライドさせるときの力が大きい場合に勢い余って鞘部80がプロテクター82から外れることはない。また、万一、無理な力が加わって注射針11が斜めになってプロテクター82に当接することがあっても、プロテクター82は鞘部80よりも硬質な材料からなるので注射針11の先端がプロテクター82の側面を突き破ることはない。
また、鞘部80に被せられるプロテクター82の前方部82aと後方部82bはそれぞれ環状で閉じているので、穿刺位置から収納位置に鞘部80をスライドさせるときに過度の力が加わったとしても翼部51,52が後方部82bに干渉し、鞘部80がプロテクター82から離脱することはない。また、プロテクター82の後方部82bが部分的に開口した従来例(図19乃至図22)のものと比較して後方部82bの変形量が制限されるので、収納位置において位置決め固定される鞘部80のときの嵌合力が大きい。
このように、注射針11が露出する可能性は低いので、安全に医療用針装置71を廃棄できる。
特に本実施態様では、上下二つの半割れ形状部83,84を同一形状にしたので、プロテクター82を成形するための金型を1種類用意するだけでよく、医療用針装置71を安価に製造できる。また医療用針装置71の組み立て前における部品管理を容易に行うことができる。
しかも、鞘部80をスライドするとき、凸部81を係止孔85からガイド溝87、ガイド溝87から係止孔85へ移動させて位置規制するので、操作時における状態が凸部81のプロテクター82との接触の触覚により認識可能である。したがって、鞘部80とプロテクター82との嵌合状態を、通常の視覚的確認のみならず触覚的確認ができるので、より安全である。
しかも、鞘部80に設けられた凸部81の前方部81aは、鞘部80の外周面上部に略垂直の壁面を有するので、一旦収納位置で固定されると、鞘部80はプロテクター82に対して前方(図4における左方向)に動くことが規制され注射針11が前方から突出することはない。
また、両半割れ形状部83,84の間に形成した、翼部51,52を左右に突出させて鞘部80のスライドを可能にする空間の上下の幅を、鞘部80に対する翼部51,52の結合部の厚さと略等しくしてもよい。このようにすると、凸部81と係止孔85、又は凸部81とガイド溝87のみがプロテクター82に対する鞘部80の回転(プロテクター82の長手方向に延びる軸周りの回転)を防止するだけでなく、翼部51,52と両半割れ形状部83,84との関係においても、鞘部80の回転が防止される。
次に図7乃至図9を参照して、本発明の第二実施形態に係る医療用針装置71を説明する。なお、第一実施形態と同一部分には同一符号を付した。
また、プロテクター89の環状の前方部89aの上部には、鞘部80をプロテクター89に対してスライドさせる際にプロテクター89を支持できるように、上方に突出した支持部91が設けられている。前方部89aの内径は注射針11の外径よりも弱冠大きく注射針11が貫通し、後方部89bの内径はチューブ40の外径よりも弱冠大きくチューブ40が貫通している。
また、連結部90の前側と後側に形成された係止孔85の間に、プロテクター89に対する鞘部80のスライド時に凸部81を前後に案内するガイド溝87を形成した。
加えて、プロテクター89が一部品のみからなるので、コストが低い。
次に図10乃至図12を参照して、本発明の第三実施形態に係る医療用針装置71を説明する。なお、第一実施形態と同一部分には同一符号を付した。
また、2つの連結部95の前側と後側に形成された係止孔97の間には、プロテクター89に対する鞘部92のスライド時に凸部93を前後に案内するガイド溝98が形成される。
また、プロテクター94が一部品のみからなるので、組み立てが容易であり、且つ成形のコストも低い。
次に図10、図12及び図13を参照して、本発明の第四実施形態に係る医療用針装置71を説明する。なお、第一実施形態と同一部分には同一符号を付した。
すなわち、第三実施形態におけるプロテクター94の後方部99bは環状であるのに対して、第四実施形態におけるプロテクター99の後方部99bは下方が切欠かれた半割れ状という点のみが異なる。
また、鞘部80,92に凸部81,93を一つ又は複数個形成したが、穿刺位置及び収納位置で鞘部80,92をプロテクター82,89,94,99に対して位置決め固定でき、スライドが円滑に行えるならば、凸部81,93の数は限定されない。
また、鞘部80,92に凸部81,93を二つ形成した場合において、各凸部81,93同士の間隔を、前側の係止孔85,97とガイド溝87,98との間隔、及び後側の係止孔85,97とガイド溝87,98との間隔と略等しくしたが、これらの間隔以上であればよい。すなわち、一方の凸部81,93が係止孔85,97と嵌合しているときに、他方の凸部81,93はガイド溝87,98内に存在する間隔であればよい。
これによれば、穿刺位置及び収納位置における鞘部80とプロテクター82との嵌合は、上下2箇所で行われるので嵌合力は大きい。また、鞘部80のスライド時におけるガイド溝87に案内される凸部81も上下2箇所となるのでスライド移動が一層安定する。
すなわち、第一実施形態で示した凸部81の形状(図4)では、穿刺位置及び収納位置で凸部81と係止孔85が係止する際、操作者は緩やかな荷重負荷を触感的に認知することは困難で係止操作が不十分になるおそれがあるが、図23(b)で示した凸部81の形状では、凸部81と係止孔85が係止する際には鉛直壁面81cが係止孔85に一旦、面接触するので、操作者は適度な過重負荷を触感的に認知することができ、さらに操作力を加えると、傾斜面81dにより比較的過重負荷の少ない形で係止孔85を乗り越え、係止操作が完了したことを触感的に認知することができる。このように、操作者が係止操作において操作時の荷重変動を触感的に認知することができるため、その操作を容易かつ確実に行うことができる。
これによれば、鞘部80や翼部51,52に対してそれらが回転する回転方向に強い力、すなわち、係止孔85に凸部81が嵌合して位置決め固定された嵌合を解除する程度の大きい力が加わったとしても、翼部51,52がカバー101に即座に接するのでそれ以上の回転が阻止される。特に、翼部51,52の上部とカバー101との間隔Sを、鞘部80のスライド移動が可能な範囲で可能な限り小さく設定すれば、回転方向の移動を小さく抑えることができるので有効である。
またここでは、注射針11の先端が隠れる幅を有するカバー101を設けて、注射針11が隠れていると操作者への心理的な安心感が得られるようにしている。
図26(a)に示す場合は、プロテクター82の下側の半割れ形状部84の後方内部に、収納位置にて鞘部80を後方より前方を高くして後方に向けて傾斜させる傾斜状突起部102を設けて、注射針11の先端をプロテクター82の前方上側内部に当接させたものであり、図26(b)に示す場合は、プロテクター82の下側の半割れ形状部84の後方内部に、収納位置にて鞘部80を前方より後方を高くして前方に向けて傾斜させる傾斜状突起部103を設けて、注射針11の先端をプロテクター82の前方下側内部に当接させたものである。すなわち、図26(a)に示す傾斜状突起部102は後方から前方に向かって直線的に突出量を大きくしたものであり、逆に、図26(b)に示す傾斜状突起部103は前方から後方に向かって直線的に突出量を大きくしたものである。なお、傾斜状突起部102をプロテクター82の上側の半割れ形状部82の後方内部に設けて注射針11の先端をプロテクター82の前方下側内部に当接させたり、あるいは、傾斜状突起部103をプロテクター82の上側の半割れ形状部82の後方内部に設けて注射針11の先端をプロテクター82の前方上側内部に当接させるようにしてもよい。
これによれば、プロテクター82の内部では鞘部80に加えて注射針11の先端も支持されるので、収納位置において注射針11先端の前後左右の動きが確実に阻止される。したがって、比較的柔らかい材料で構成されている鞘部80や翼部51,52に対して左右方向(横方向)の力が負荷された場合であってもその動作に併せて注射針11の先端が動作することは防止される。
これによれば、プロテクター82の上側の半割れ形状部83に対して鞘部80にそれが延びる軸方向に回転する方向に力が負荷された場合には、鞘部80における扇状の部位の両端又は逆台形状の部位の上部角部両端が上側の半割れ形状部83に係合し鞘部80の回転方向の移動が阻止されるので不意な回転が防止され安全である。
10 針基部
10a 先端部
10b 後端部
10c 溝
10d 凹部
10e 凹部
11 注射針
20 鞘部
21 翼部
22 翼部
23 凸条(翼凸部)
24 条溝(翼凹部)
25 条溝(翼凹部)
26 凸条(翼凸部)
30 キャップ
40 チューブ
50 プロテクター
50a 基端部
50b 掛止突起
51 翼部
52 翼部
60 プロテクター
60a 基端部
60b 掛止突起
60c スリット
71 医療用針装置
80 鞘部
81 凸部
81a 前方部
81b 後方部
82 プロテクター
82a 前方部
82b 後方部
83 半割れ形状部
83a 挿着凸部
83b 挿着凹部
84 半割れ形状部
84a 挿着凸部
84b 挿着凹部
85 係止孔
86 連結部
87 ガイド溝
88 支持部
89 プロテクター
89a 前方部
89b 後方部
90 連結部
91 支持部
92 鞘部
93 凸部
94 プロテクター
94a 前方部
94b 後方部
95 連結部
96 支持部
97 係止孔
98 ガイド溝
99 プロテクター
99a 前方部
99b 後方部
101 カバー
102 傾斜状突起部
103 傾斜状突起部
S 間隔
Claims (10)
- 先端に注射針が装着されるとともに後端にチューブが被嵌された針基部と、前記針基部に外挿されるとともに左右両側面部に一対の翼部が結合され内方で前記針基部を支持する筒状の鞘部と、前記針基部とともに前記鞘部を前記注射針を突出する穿刺位置から前記注射針を収納する収納位置まで前後にスライド可能な状態で、前記鞘部に対して被せられるプロテクターを備える医療用針装置であって、
前記プロテクターは、前記注射針が貫通する環状の前方部と、前記チューブが貫通する環状の後方部と、前記鞘部の一対の翼部を突出させ前記鞘部のスライドを可能にする空間を形成した状態で前記前方部と前記後方部を連結する連結部を備え、前記鞘部よりも硬質な材料からなり、
しかも、前記穿刺位置及び前記収納位置にて、前記鞘部を前記プロテクターに対して位置決め固定する位置規制機構を、前記鞘部の外周面及び前記プロテクターの前側と後側に形成したことを特徴とする医療用針装置。 - 前記プロテクターは、上下二つの半割れ形状部からなり、前記鞘部を上下から挟持して被せられ、両半割れ形状部の間に、前記鞘部のスライドを可能にする空間を形成したことを特徴とする請求項1に記載の医療用針装置。
- 前記位置規制機構は、前記鞘部の外周面上部に形成された凸部と、前記プロテクターの前側と後側にそれぞれ形成され、前記凸部に嵌合する係止孔からなり、
前記プロテクターの上側の半割れ形状部の前側と後側に形成された前記係止孔の間に、前記スライド時に前記凸部を前後に案内するガイド溝を形成したことを特徴とする請求項2に記載の医療用針装置。 - 前記上下二つの半割れ形状部を同一形状にしたことを特徴とする請求項2又は3に記載の医療用針装置。
- 前記プロテクターの連結部は、前記前方部の上部と前記後方部の上部間だけを連結するものであり、
前記位置規制機構は、前記鞘部の外周面上部に形成された凸部と、前記プロテクターの連結部の前側と後側にそれぞれ形成され、前記凸部に嵌合する係止孔からなり、
前記連結部の前側と後側に形成された前記係止孔の間に、前記スライド時に前記凸部を前後に案内するガイド溝を形成したことを特徴とする請求項1に記載の医療用針装置。 - 前記プロテクターの連結部は、前記前方部の左右両側面と前記後方部の左右両側面とをそれぞれ連結する2つのものであり、
前記位置規制機構は、前記鞘部の外周面の左右両側面に形成された2つの凸部と、前記プロテクターの2つの連結部の前側と後側にそれぞれ形成され、前記2つの凸部に嵌合する係止孔からなり、
前記2つの連結部の前側と後側に形成された前記係止孔の間に、前記スライド時に前記凸部を前後に案内するガイド溝をそれぞれ形成したことを特徴とする請求項1に記載の医療用針装置。 - 先端に注射針が装着されるとともに後端にチューブが被嵌された針基部と、前記針基部に外挿されるとともに左右両側面部に一対の翼部が結合され内方で前記針基部を支持する筒状の鞘部と、前記針基部とともに前記鞘部を前記注射針を突出する穿刺位置から前記注射針を収納する収納位置まで前後にスライド可能な状態で、前記鞘部に対して被せられるプロテクターを備える医療用針装置であって、
前記プロテクターは、前記注射針が貫通する環状の前方部と、前記チューブが嵌め込まれる下方部が切欠かれた半割れ状の後方部と、前記前方部の左右両側面と前記後方部の左右両側面とをそれぞれ連結する2つの連結部とを備え、前記鞘部の一対の翼部を前記連結部の下方から突出させ前記鞘部のスライドを可能にしたもので、さらに前記鞘部よりも硬質な材料からなり、
しかも、前記穿刺位置及び前記収納位置にて、前記鞘部を前記プロテクターに対して位置決め固定する位置規制機構を、前記鞘部の外周面の左右両側面に形成された2つの凸部と、前記プロテクターの2つの連結部の前側と後側にそれぞれ形成され、前記2つの凸部に嵌合する係止孔からなり、
前記2つの連結部の前側と後側に形成された前記係止孔の間に、前記スライド時に前記凸部を前後に案内するガイド溝をそれぞれ形成したことを特徴とする医療用針装置。 - 前記穿刺位置及び前記収納位置にて、前記鞘部の一対の翼部の上部とその上方に相対向する前記プロテクターの部位との間隔を狭くするカバーを前記プロテクターに設けたことを特徴とする請求項1乃至4のうちいずれか一つに記載の医療用針装置。
- 前記プロテクターの上下二つの半割れ形状部のいずれか一方の後方内部に、前記収納位置にて前記鞘部を傾斜させる(前方から後方にかけて突出量を小さく又は大きくする)傾斜状突起部を設けて、前記注射針の先端を前記プロテクターの前方内部に当接させることを特徴とする請求項2乃至4のうちいずれか一つに記載の医療用針装置。
- 前記鞘部の断面外部形状を、上部から下部側に狭くなるように絞った扇状又は逆台形状とするとともに、前記プロテクターの上側の半割れ形状部において前記鞘部に被せられる部位の断面内部形状を、前記鞘部の断面形状に対応した扇状又は逆台形状にしたことを特徴とする請求項2乃至4のうちいずれか一つに記載の医療用針装置。
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EP10743674A EP2399625A4 (en) | 2009-02-19 | 2010-02-10 | MEDICAL NEEDLE DEVICE |
SG2011058112A SG173659A1 (en) | 2009-02-19 | 2010-02-10 | Medical needle device |
CN2010800089655A CN102325557A (zh) | 2009-02-19 | 2010-02-10 | 医疗用针装置 |
US13/208,875 US20110301552A1 (en) | 2009-02-19 | 2011-08-12 | Medical needle device |
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JP2009-036614 | 2009-02-19 | ||
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JP2010-026541 | 2010-02-09 | ||
JP2010026541A JP2010214096A (ja) | 2009-02-19 | 2010-02-09 | 医療用針装置 |
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US13/208,875 Continuation US20110301552A1 (en) | 2009-02-19 | 2011-08-12 | Medical needle device |
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WO2010095547A1 true WO2010095547A1 (ja) | 2010-08-26 |
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US (1) | US20110301552A1 (ja) |
EP (1) | EP2399625A4 (ja) |
JP (1) | JP2010214096A (ja) |
KR (1) | KR20110116237A (ja) |
CN (1) | CN102325557A (ja) |
SG (1) | SG173659A1 (ja) |
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Publication number | Publication date |
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EP2399625A1 (en) | 2011-12-28 |
CN102325557A (zh) | 2012-01-18 |
US20110301552A1 (en) | 2011-12-08 |
EP2399625A4 (en) | 2013-03-06 |
JP2010214096A (ja) | 2010-09-30 |
SG173659A1 (en) | 2011-09-29 |
KR20110116237A (ko) | 2011-10-25 |
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