WO2005035031A1 - 穿刺具 - Google Patents
穿刺具 Download PDFInfo
- Publication number
- WO2005035031A1 WO2005035031A1 PCT/JP2004/014749 JP2004014749W WO2005035031A1 WO 2005035031 A1 WO2005035031 A1 WO 2005035031A1 JP 2004014749 W JP2004014749 W JP 2004014749W WO 2005035031 A1 WO2005035031 A1 WO 2005035031A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- needle
- diameter portion
- protector
- puncture device
- tip
- Prior art date
Links
Classifications
-
- 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
- A61M5/3216—Caps placed transversally onto the needle, e.g. pivotally attached to the needle base
-
- 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
- A61M5/329—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 characterised by features of the needle shaft
Definitions
- the present invention is, for example, relates to the piercing device that is punctured and used in a blood vessel or the like c
- an injection needle When blood is collected or a drug solution is administered to a patient, an injection needle is attached to the tip of the syringe, and the injection needle is punctured into a patient's blood vessel.
- Such an injection needle is composed of a needle tube (needle body) having a sharp needle tip at the distal end, and a needle fixed to the proximal end of the needle tube.
- the injection needle and the syringe after the blood collection and the administration of the medicinal solution to the patient are no longer needed, and are discarded.
- the injection needle and the syringe are respectively discarded separately due to a difference in material.
- the injection needle is discarded as it is, there is a risk that an accident may occur in which a disposal worker or the like accidentally stabs a finger or the like with the needle tip.
- infection by such a stab may be caused.
- a protector configured to solve such a problem is configured to rotate the protector body so as to approach the protector body from a lateral direction with respect to the used needle body to cover the needle tip.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2002-35121.
- an engagement piece that abuts on and engages with the needle body is provided on the protector main body such that the protector main body that covers the needle tip keeps its state as it is.
- the engagement piece presses the needle body and engages after the needle body is once passed over the needle body.
- the needle body may be plastically deformed and the needle tip may protrude from the protector body.
- An object of the present invention is to provide a puncture device that can prevent deformation of a needle body due to pressing of an engagement member and can reliably maintain a state in which the protector body covers the needle tip of the needle body.
- a needle body having a needle tip at the tip
- a hub installed on the proximal end side of the needle body
- a protector comprising: a fixing portion for fixing to the hub; and a protector body rotatably supported by the fixing portion and covering at least a needle tip of the needle body.
- a puncture device having an engaging member that engages with the needle body so that the protector main body keeps a state in which the needle tip of the needle body is covered
- the needle body is formed of a different diameter needle having a large diameter portion on the base end side and a small diameter portion on the distal end side of the large diameter portion, and the engaging member engages with the large diameter portion.
- a puncture device characterized by having such a configuration.
- the used needle body can be stored in the protector quickly and safely with a simple operation, and blood disposal and infection can be prevented during disposal.
- a puncture device which is extremely excellent in terms of hygiene and safety and prevents accidents such as accidentally stabbing a finger or the like with a needle tip.
- rotate the protector body to cover the needle tip.
- the engaging member engages with the large-diameter portion having greater strength than other portions of the needle tube, so that the deformation of the needle body due to the pressing of the engaging member is prevented.
- the engagement of the engaging member with the needle body is reliably performed, so that the state where the protector body covers the needle tip of the needle body can be reliably maintained.
- the fixing portion can be securely fixed to the knob at an appropriate position and posture, and the occurrence of displacement during use or the like is prevented.
- the engaging member is formed of an elastically deformable plate-shaped member.
- the engaging member allows the needle to pass when the protector main body is rotated so that the protector main body covers the needle tip.
- the main body is rotated in a direction opposite to the above, a state in which the main body covers the needle tip, it is preferable that the main body engages with the large diameter portion of the needle body to prevent the needle body from passing therethrough.
- the needle tip of the needle body can be covered by the protector body with a simple operation, and after the protector body once covers the needle tip of the needle body, the state is maintained thereafter. Since the needle tip is prevented from being exposed to the outside of the protector body by mistake, high safety is maintained.
- the needle body has a large-diameter portion having a substantially constant outer diameter, a small-diameter portion having a substantially constant outer diameter, and a position between the large-diameter portion and the small-diameter portion.
- the outer diameter force of the large diameter portion preferably has a tapered portion whose outer diameter gradually decreases continuously to the outer diameter of the small diameter portion.
- the outer peripheral surface at the boundary between the large diameter portion and the tapered portion and the outer peripheral surface at the boundary between the tapered portion and the small diameter portion each have a step. Consisting of no continuous surface, it is preferable to run! /.
- the needle body has a large-diameter portion having a substantially constant outer diameter, a small-diameter portion having a substantially constant outer diameter, and a position between the large-diameter portion and the small-diameter portion. And a tapered portion in which the outer diameter gradually decreases continuously to the outer diameter of the small-diameter portion.
- the engagement member is formed of an elastically deformable plate-shaped member.
- the protector body When the protector body is rotated so that the protector body covers the needle tip, the protector body is elastically deformed to allow the needle body to pass therethrough.
- the protector main body When the protector main body is rotated in the opposite direction to the state in which the protector body covers the needle tip, the protector body preferably engages with the large-diameter portion of the needle body to prevent the needle body from passing therethrough.
- the needle tip of the needle body can be covered by the protector body with a simple operation, and after the protector body once covers the needle tip of the needle body, the state is maintained thereafter. Since the needle tip is prevented from being exposed to the outside of the protector body by mistake, a high level of safety is maintained, and further, the deformation of the needle body due to the engagement member pressing and engaging the large diameter portion, and It is possible to reduce pain when piercing the living body (such as skin) with the needle body.
- FIG. 1 is a partial cross-sectional side view showing an embodiment of a puncture device of the present invention.
- FIG. 2 is a side view showing an embodiment of the puncture device of the present invention.
- FIG. 3 is a side view showing an embodiment of the puncture device of the present invention.
- FIG. 4 is a partial cross-sectional side view showing an embodiment of the puncture device of the present invention.
- FIG. 5 is a sectional view taken along line AA in FIG. 4.
- FIGS. 1 and 4 are partial cross-sectional side views showing an embodiment of the puncture device of the present invention
- FIGS. 2 and 3 are diagrams respectively showing an embodiment of the puncture device of the present invention
- FIG. 5 is a side view taken along the line AA in FIG.
- the left side in FIGS. 1 to 4 is referred to as a “proximal end” and the right side is referred to as a “distal end”.
- a puncture device 1 of the present invention includes a puncture needle 2 and a protector 6 attached to the puncture needle 2.
- the puncture needle 2 is composed of a needle tube (needle body) 20 having a sharp needle tip 24 at the distal end, and a knob 25 fixed to the proximal end of the needle tube 20.
- the needle tube 20 is a hollow needle and is made of a metal material such as stainless steel, aluminum or aluminum alloy, titanium or a titanium alloy.
- a sharp needle tip 24 is formed at the distal end of the needle tube 20.
- the shape of the needle tip 24 is not particularly limited, and in the present embodiment, has a blade surface inclined at a predetermined angle with respect to the axis of the needle tube 20.
- the needle tube 20 is formed of a different diameter needle having a large-diameter portion 21, a tapered portion 22, and a small-diameter portion 23 in this order with the proximal end force also directed to the distal end side.
- the large diameter portion 21 has a substantially constant outer diameter over its entire length.
- the thickness (outer diameter) of the large diameter portion 21 is preferably 14-27G (about 0.41-2.11 mm) in gauge size, and 20-27G (about 0.41-0.89 mm). ) Is more preferable. With such a thickness, the deformation of the needle tube 20 can be sufficiently prevented even when an engagement piece (engagement member) 46 described later abuts and engages.
- the length L of the large-diameter portion 21 is not particularly limited, but is preferably 5-11 mm, more preferably 911 mm. When the large-diameter portion 21 has such a length, sufficient strength is ensured, and the degree of freedom in selecting the installation position of the engagement piece 46 with respect to the protector body 4 is increased.
- the outer diameter of the small diameter portion 23 is substantially constant over its entire length, and a tip 24 is formed at the tip of the small diameter portion 23.
- the thickness (outer diameter) of the small diameter portion 23 is preferably 25-34G (about 0.51-0.18 mm) in gauge size 27-34G (about 0.41-0.18 mm) Is more preferable.
- the length L of the small diameter portion 23 is not particularly limited, but is preferably 2-5 mm.
- a tapered portion 22 is formed between the large-diameter portion 21 and the small-diameter portion 23.
- the tapered portion 22 has a base end force whose outer diameter gradually decreases toward the distal end.
- the outer diameter of the base end of the tapered portion 22 is equal to the outer diameter of the large diameter portion 21.
- the outer diameter of the distal end of the tapered portion 22 is equal to the outer diameter of the small diameter portion 23.
- the outer peripheral surface at the boundary between the large diameter portion 21 and the taper portion 22 and the outer peripheral surface at the boundary between the tapered portion 22 and the small diameter portion 23 are each formed of a continuous surface having no steps.
- the length L of the tapered portion 22 is not particularly limited, but is preferably 3 to 10 mm.
- One 8 mm is more preferable, and 5-8 mm is still more preferable. Thereby, the taper angle of the taper portion 22 becomes moderate, and the puncture can be performed smoothly without the length L being too long.
- the taper angle of the tapered portion 22 may be constant over the entire length of the tapered portion 22 or may have a portion where the taper angle changes along the longitudinal direction.
- a hub 25 is fixed (fixed) in a liquid-tight manner, and the lumen of the needle tube 20 communicates with the inside of the hub 25.
- the method of fixing the needle tube 20 to the hub 25 is not particularly limited, and examples thereof include a method of force crimping, fusion (heat fusion, high frequency fusion, or the like), adhesion with an adhesive, and the like.
- the hub 25 is formed of a substantially cylindrical member, and is preferably formed of transparent (colorless and transparent), colored transparent or translucent resin, and the internal visibility is ensured.
- the proximal lumen (not shown) of the hub 25 has a tapered shape whose inner diameter gradually increases in the proximal direction.
- a distal end protruding portion of a syringe (not shown) is inserted and fitted into the tapered lumen, whereby the puncture needle 2 is mounted on the syringe.
- a flange 26 protruding in a ring shape is formed on the outer periphery of the base end of the hub 25.
- a plurality of (four in the configuration shown) ribs 27 are formed on the outer periphery of the distal end portion of the hub 25. In the vicinity of the base end side of the rib 27, a flange 28 projecting in a ring shape is formed.
- a cylindrical cap 9 having a closed distal end portion is put on the distal end side portion of the hub 25 and the needle tube 20.
- each rib 27 Abuts against the inner peripheral surface on the base end side of the cap 9 and is crimped to fit the cap 9, and the mounted state of the cap 9 is maintained. As a result, contamination of the needle tube 20 is prevented, and the needle tube 20 is protected.
- the cap 9 is attached before the puncture device 1 is used, that is, before the needle tube 20 is punctured into the living body, but after the cap 9 is removed, the needle tube 20 is punctured into the living body, and As described later, the operation of attaching the removed cap 9 again is not performed, and the needle tube 20 is covered by the protector body 4.
- Protector 6 is used by being attached to puncture needle 2, and is preferably detachable from puncture needle 2.
- the protector 6 is rotatably supported by a fixing part 3 for fixing to the hub 25 and a rotation mechanism (hinge structure part) 5 with respect to the fixing part 3, and at least the needle of the needle tube (needle body) 20 And a protector body 4 that can cover the tip 24.
- the fixing portion 3 is formed in a ring shape (annular shape), and a portion of the hub 25 on the base end side from the rib 27 is fitted into the inner hole and fixed.
- a positioning projection (stopper) 29 is formed on the outer periphery of the hub 25, and the fixed portion 3 moves in the axial direction (the longitudinal direction of the needle tube 20) with respect to the hub 25 between the hub 25 and the flange 28.
- the convex portion 29 functions as a restricting means for restricting (preventing) the fixed portion 3 from moving in the axial direction with respect to the hub 25.
- the fixing portion 3 may be provided with rotation preventing means for preventing the hub 25 from rotating in the circumferential direction thereof.
- the rotation preventing means for example, the friction coefficient (sliding resistance) of the inner surface of the fixed portion 3 is increased by applying roughening (embossing) or forming a plurality of grooves on the inner surface. Such a configuration is given.
- an inner layer made of an elastic material such as various rubbers or thermoplastic elastomers or an adhesive may be formed on the inner surface of the fixing portion 3 to increase the frictional resistance to the hub 25.
- the fixing portion 3 rotates in the circumferential direction with respect to the hub 25 during use or the like, the direction of the blade surface (opening) of the needle tip 24 changes, or the direction of the blade surface (opening). Or lose track of However, by providing the rotation preventing means as described above, such inconvenience is reliably prevented.
- the fixing portion 3 is not limited to a ring shape (annular shape) that is connected all around, but may be a C-shape (C-ring) with a part missing in the circumferential direction. .
- Such a fixing portion 3 may be simply fixed to the hub 25 by fitting.
- the fixing portion 3 is adhered by a force adhesive or fused (heat fusion, ultrasonic fusion, or the like). I'm a little
- the protector body 4 has a covering portion 41 that covers at least the needle tip 24 of the needle tube 20.
- the covering portion 41 is constituted by a pair of opposing side wall portions (side plates) 42 and 42, and a bottom portion (bottom plate) 43 connecting the side wall portions 42 and 42 at one end thereof.
- the cross-sectional shape is substantially U-shaped.
- a groove 44 is formed between the side walls 42, 42, and a distal end portion of the needle tube 20 including the needle tip 24 is inserted and housed in the groove 44.
- the side walls 42, 42 are installed substantially in parallel.
- the tip of the groove 44 is closed by a top wall 45.
- the needle tip 24 is located on the base end side of the top wall 45 of the protector body 4, and the length of the needle tip 24 is The length is such that it is separated from the wall 45 by a predetermined distance and does not contact the top wall 45 (see FIG. 4).
- Such a protector body 4 is rotatably supported by a rotating mechanism 5 provided on the fixed part 3.
- the protector main body 4 moves the first position (see FIG. 4) covering at least the needle tip 24 of the needle tube 20 and the second position (see FIG. 2) away from the needle tube 20. And rotate.
- the rotating mechanism 5 forms a hinge structure, and includes a shaft 51 formed at the base end of the protector body 4 and a bearing 52 that supports the shaft 51.
- the axis 51 extends in a direction perpendicular to the plane of FIG. 1 to FIG.
- the bearing 52 is formed of, for example, a pair of opposing plate pieces, and each plate piece is formed with a hole through which both ends of the shaft 51 are inserted.
- the protector body 4 rotates around the shaft 51 as a rotation center.
- the rotation angle range (maximum rotatable angle range) of the protector body 4 is not particularly limited, but is preferably about 80 ° to 180 °, and is 90 ° or more and less than 180 °. More preferred More preferably, it is about 95 ° -165 °. In such a range, operability such as puncturing is particularly excellent.
- the rotation mechanism 5 may have a function of fixing the posture (rotation angle) of the protector main body 4, in particular, a function of fixing the posture in multiple stages (for example, four stages). Accordingly, it is possible to more reliably prevent the protector body 4 from swinging with respect to the puncture needle 2 during the puncture operation of the needle tube 20 into the living body or the like, thereby hindering the operation.
- This function can be achieved by, for example, forming the shaft 51 and a hole for inserting and supporting the shaft 51 (a hole formed in the bearing 52) into a polygonal shape.
- the rotating mechanism is not limited to the hinge structure shown in the figure.
- the fixing portion 3 and the protector main body 4 are connected by a flexible band.
- the protector body 4 may be configured to rotate by the curved deformation of the band-shaped body.
- the constituent material of each part of the hub 25 and the protector 6 is not particularly limited. Polyester such as methyl methacrylate, polycarbonate, polyamide, polyethylene terephthalate, polybutylene terephthalate, acrylic resin, ABS resin, AS resin, ionomer, polyacetal, polyphenylene sulfide, polyether ether ketone, etc. Various resin materials.
- the protector body 4 is rotated to change its posture from, for example, a second position (the state of FIG. 2) to an intermediate position. Through the position (the state shown in FIG. 3), it can be changed to the first position (the state shown in FIG. 4).
- the protector body 4 is set to the second position (the state shown in FIG. 2), and the needle tip 24 punctures the living body.
- the protector main body 4 is rotated counterclockwise in FIG. 2 and once displaced to the intermediate position (the state in FIG. 3).
- the needle tube 20 is covered with the protector body 4 by displacing to the first position (the state shown in FIG. 4).
- the cap 9 is put on the needle tube 20 after the biopsy force is also removed from the needle tip 24.
- this operation is performed by inserting the needle tube 20 from the needle tip 24 into the base end opening of the cap 9, when the needle tip 24 comes out of the opening, the finger holding the cap is gripped. There is a risk of accidental puncturing of the needle with the needle point 24.
- the protector body 4 since the protector body 4 also approaches the lateral force of the needle tube 20 and covers the needle tip 24, it is possible to effectively prevent the aforementioned stabs and contamination due to blood adhesion.
- an engagement piece (engaging member) that can be engaged with the needle tube 20. 46 is installed (see FIGS. 1, 4, and 5).
- the engagement piece 46 is made of a plate-like member that can be elastically deformed. As shown in FIG. 5, even if a separate member is fixed to the covering portion 41 of the protector body 4, It may be formed integrally with the part 41.
- the engagement piece 46 is a force that allows the needle tube 20 to pass in the protector body 4 inward direction.
- the needle tube 20 allows the needle tube 20 to pass in the protector body 4 direction, the passage in the opposite direction is prevented. It has a function to do. That is, when the needle tube 20 enters the groove 44 of the protector body 4 by the rotation of the protector body 4 (the protector body 4 moves from the intermediate position in FIG. 3 to the first position in FIG. 4).
- the needle tube 20 presses the outer surface 461 of the engagement piece 46, and can move beyond the engagement piece 46 to the inner side of the groove 44 (to the bottom 43 side of the protector body 4).
- the needle tube 20 (the large-diameter portion 21) is moved even if the needle tube 20 tries to move out of the groove 44 (downward in FIG. 5).
- the end portion 47 of the engagement piece 46 which is in contact with the inner surface 462 of the engagement piece 46 and pressed downward in FIG. 5 by the needle tube 20, comes into contact with the inner surface of the side wall portion 42 and can move further downward. This prevents the needle tube 20 from going out of the groove 44 beyond the engagement piece 46.
- the installation positions of the engagement pieces 46 with respect to the protector body 4 are as follows. That is, when the protector body 4 is rotated to cover the needle tip 24 of the needle tube 20, the engaging piece 46 is brought into contact with the large diameter portion 21 of the needle tube 20 and is positioned to be engaged. You. As described above, when the needle tube 20 moves to the inner side of the groove 44 beyond the engagement piece 46, a certain angle is applied to move the needle tube 20 in a direction to exit the groove 44. When the needle tube 20 comes into contact with and engages with the piece 46, the needle tube 20 receives a pressing force from the engagement piece 46. Therefore, deformation (elastic deformation and plastic deformation) of the needle tube 20 due to the pressing force is prevented. As a result, the needle tube 20 can reliably pass over the engagement piece 46, and if the needle tip 24 protrudes from the protector body 4 due to the deformation of the needle tube 20, no inconvenience occurs.
- the entirety of the needle tube 20 thick (the large-diameter portion 21). Pain felt when puncturing (skin, etc.) becomes large.
- the small-diameter portion 23 is thinner than the large-diameter portion 21 and the small-diameter portion 23 is punctured by a living body (skin or the like), so that pain at the time of puncturing can be reduced. That is, in the present invention, it is possible to achieve both the prevention of deformation of the needle tube 20 due to the pressing of the engagement piece 46 and the reduction of pain at the time of puncturing.
- the shape and the number of the engagement pieces 46 are not limited to those shown in the figure.
- a plurality of engagement pieces 46 may be provided along the longitudinal direction of the large-diameter portion 21.
- Examples of a constituent material of the engagement piece 46 include polyolefin such as polyethylene and polypropylene, hard polychlorinated vinyl, polystyrene, polymethyl methacrylate, polycarbonate, polyamide, polyethylene terephthalate, and polybutylene terephthalate.
- Various resin materials such as polyester, acrylic resin, ABS resin, AS resin, ionomer, polyacetal, polyphenylene sulfide, polyetheretherketone, and various metal materials such as aluminum, stainless steel, copper alloy, etc. Is mentioned.
- the shape, structure, function, and the like of the engaging member (holding means) are not limited to those shown in the drawings, and may be, for example, a chuck structure or a clip structure (a structure having a pinching function). ) May be used.
- the hub 25 and the fixing portion 3 can be bonded or fused as necessary.
- the fixing is preferably completed in advance, but the fixing operation may be performed before use.
- the protector body 4 is rotated counterclockwise in FIG. 1 to be displaced to the first position in FIG. 4 through the intermediate position in FIG. Thereby, the covering portion 41 of the protector body 4 covers at least the needle tip 24 of the needle tube 20.
- the tip end protruding portion of the syringe may be withdrawn from hub 25, and puncture device 1 and the syringe may be separated and discarded separately.
- needle tip 24 is stored in protector body 4, and in particular, needle tip 24 is Since the tip force of the tector body 4 does not protrude or come off, it is possible to prevent a person who performs disposal processing from accidentally sticking a finger or the like with the needle tip 24.
- each component constituting the puncture device may have any configuration capable of exhibiting the same function. And any configuration may be added.
- the shapes, structures, functions, and the like of the protector body and the fixing portion are not limited to those shown in the drawings.
- the structure of the needle body is not limited to the structure including the large diameter portion 21, the taper portion 22, and the small diameter portion 23 as described above.
- all or most of the needle body may be a needle having a different diameter such that the base force is formed of a tapered portion whose outer diameter is gradually reduced toward the distal end.
- the base end portion of the tapered portion corresponds to the “large diameter portion” in the present invention
- the tip end portion (near the needle tip) of the tapered portion corresponds to the “small diameter portion”.
- the engagement member is configured to engage with the base end side portion of the tapered portion.
- the needle body (different diameter needle) according to the present invention comprises the above-mentioned tapered portion and a large-diameter portion located on the base end side, or the tapered portion and the distal end side. And a small diameter portion.
- the engaging member engages with the large diameter portion
- the engaging member engages with the tapered portion.
- the "large-diameter portion" and “small-diameter portion” referred to in the present invention refer to two portions in which the relative magnitude relationship of the outer diameter (particularly the average outer diameter) is established.
- the puncture device of the present invention is not limited to one provided with various injection needles, but can be applied to, for example, an indwelling needle assembly used in combination with an indwelling needle (outer needle).
- the used needle body can be stored in the protector quickly and safely by a simple operation, and the blood can be contaminated or infected at the time of disposal.
- a puncture device that is extremely excellent in terms of hygiene and safety and prevents accidents such as accidentally stabbing a finger or the like with a needle tip.
- the engaging member when the protector main body is rotated to cover the needle tip, the engaging member is configured to engage with the large diameter portion of the needle body. For pressing the engaging member The deformation of the needle body due to the above can be prevented. Thereby, the engagement of the engagement member with the needle body can be reliably performed, and the state where the protector body covers the needle tip of the needle body can be reliably maintained.
- the puncture device of the present invention provides a needle body having a needle tip at a distal end, a hub installed on the base end side of the needle body, a fixing part for fixing to the hub, and a A protector rotatably supported and having a protector body covering at least the needle tip of the needle body, and engaging with the needle body so as to maintain a state in which the protector body covers the needle tip of the needle body.
- a puncture device having a large diameter portion on the base end side and a small diameter portion on the distal end side from the large diameter portion. The member is configured to engage with the large diameter portion. Therefore, the needle tip of the used needle body can be stored in the protector with a simple operation quickly and safely, which is extremely excellent in hygiene and safety.
- the puncture device of the present invention has industrial applicability.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2005514581A JPWO2005035031A1 (ja) | 2003-10-10 | 2004-10-06 | 穿刺具 |
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Application Number | Priority Date | Filing Date | Title |
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JP2003-352668 | 2003-10-10 | ||
JP2003352668 | 2003-10-10 |
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WO2005035031A1 true WO2005035031A1 (ja) | 2005-04-21 |
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PCT/JP2004/014749 WO2005035031A1 (ja) | 2003-10-10 | 2004-10-06 | 穿刺具 |
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WO (1) | WO2005035031A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016002389A1 (ja) * | 2014-07-02 | 2016-01-07 | テルモ株式会社 | 安全針アセンブリ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002065850A (ja) * | 2000-08-28 | 2002-03-05 | Terumo Corp | 穿刺具 |
JP2002307122A (ja) * | 2001-04-09 | 2002-10-22 | Sanion:Kk | 注射針の製造方法 |
-
2004
- 2004-10-06 WO PCT/JP2004/014749 patent/WO2005035031A1/ja active Application Filing
- 2004-10-06 JP JP2005514581A patent/JPWO2005035031A1/ja active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002065850A (ja) * | 2000-08-28 | 2002-03-05 | Terumo Corp | 穿刺具 |
JP2002307122A (ja) * | 2001-04-09 | 2002-10-22 | Sanion:Kk | 注射針の製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016002389A1 (ja) * | 2014-07-02 | 2016-01-07 | テルモ株式会社 | 安全針アセンブリ |
JPWO2016002389A1 (ja) * | 2014-07-02 | 2017-04-27 | テルモ株式会社 | 安全針アセンブリ |
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JPWO2005035031A1 (ja) | 2006-12-21 |
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