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WO2017034080A1 - Structure de filtre de seringue et seringue comprenant cette structure - Google Patents

Structure de filtre de seringue et seringue comprenant cette structure Download PDF

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Publication number
WO2017034080A1
WO2017034080A1 PCT/KR2015/011885 KR2015011885W WO2017034080A1 WO 2017034080 A1 WO2017034080 A1 WO 2017034080A1 KR 2015011885 W KR2015011885 W KR 2015011885W WO 2017034080 A1 WO2017034080 A1 WO 2017034080A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
filter
check valve
syringe
hole
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2015/011885
Other languages
English (en)
Korean (ko)
Inventor
석원현
이강성
민정식
채수민
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sang A Frontec Co Ltd
Original Assignee
Sang A Frontec Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sang A Frontec Co Ltd filed Critical Sang A Frontec Co Ltd
Publication of WO2017034080A1 publication Critical patent/WO2017034080A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • 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

Definitions

  • the present invention relates to a filter structure for a syringe and a syringe having the same.
  • syringes are used to draw blood from a patient's blood vessels or to collect fluids other than blood from the body. On the other hand, it is used to inject the drug directly into the blood vessel, or to inject the drug into the muscle or subcutaneous.
  • the syringe can be used to collect fluid from the body or inject the injection into the body.
  • the glass particles of the ampoule are filtered by the filter when the injection is inhaled, but when the injection is injected into the patient, the injection process is cumbersome because the injection must be performed after the filter containing the ampoule glass particles is removed.
  • One embodiment of the present invention is a syringe for injecting a glass particle of the ampoule while the injection process is easy to pass through the filter member when the injection is injected into the patient without the filter member when injecting the injection into the syringe
  • a filter structure and a syringe having the same are provided.
  • a filter structure for a syringe is provided that includes a filter body in close contact with a valve
  • the receiving portion is formed therein is accommodated in the filter portion, the front of the receiving portion is coupled to the needle, the rear of the receiving portion includes a cylindrical filter holder coupled to the cylinder, one side of the receiving portion
  • the first fluid path may be formed, and the second fluid path may be formed on the other side of the accommodation part.
  • a locking projection protruding inwardly of the filter holder may be formed at the front portion of the accommodation portion.
  • the locking step includes a first protrusion and a second protrusion protruding rearward, the first protrusion is in contact with one side of the second check valve, the second protrusion is spaced apart from the other side of the second check valve Can be arranged.
  • the filter body may include a tubular outer cylinder portion, an inner cylinder portion connected to the outer cylinder portion and formed inside the outer cylinder portion, and an extension tube extending rearward from the inner cylinder portion.
  • the filter body may have a first suction hole formed on a first fluid path between the outer cylinder part and the inner cylinder part, and a first discharge hole formed on the second fluid path.
  • a first coupling hole is formed in a central portion of the inner tube part and the extension tube, and the first suction hole and the first discharge hole are formed to surround at least a portion of the first coupling hole.
  • the first discharge hole may be formed on a concentric circle.
  • the first check valve is a ring-shaped outer ring portion which is arranged in close contact with the rear surface of the filter body to selectively block the first suction hole when the injection liquid flows in, connected to the outer ring portion and inside the outer ring portion Including an inner ring portion formed in, the second discharge hole may be formed on the second fluid path between the outer ring portion and the inner ring portion.
  • a second coupling hole is formed in the central portion of the inner ring part to close the filter member to the front surface of the first check valve, and the second discharge hole is formed to surround at least a portion of the second coupling hole.
  • the outer ring portion may be spaced apart in front of the cylinder may be formed between the cylinder and the outer ring portion a second moving space in which the outer ring portion can be spaced apart from the first suction hole.
  • the second check valve is formed in a disk-shaped disk portion which is arranged in close contact with the front surface of the filter body to selectively block the first discharge hole when the injection liquid is discharged in the front portion and protruding backward from the disk portion And a pillar portion inserted into and coupled to the first coupling hole.
  • the disc portion may be spaced apart from the rear of the locking jaw and a first moving space in which the disc portion can be spaced apart from the first discharge hole may be formed between the locking jaw and the disc portion.
  • the rear side of the filter body is formed with a coupling portion protruding rearward, an insertion hole is formed between the outer ring portion and the inner ring portion to correspond to the coupling portion, the filter body is coupled to the first check valve Can be.
  • the filter member may be formed to cover the second discharge hole in a ring shape so that the injection liquid passing through the second discharge hole may pass through the filter member.
  • the fixing member is mounted to the front of the injection needle, the above-described filter structure coupled to the fixing member, the cylinder coupled to the rear of the filter structure, the front with at least a portion inserted into the cylinder
  • a syringe is provided which includes a piston which moves rearward to introduce the injection liquid into the cylinder or to discharge it out of the cylinder.
  • the fixing member has a cylindrical shape, a through hole connected to the needle is formed on the outer circumferential surface, the through hole may be connected to the first suction hole and the first discharge hole.
  • a plurality of protrusions may be formed on an outer circumferential surface of the cylinder, and a plurality of fitting grooves formed to correspond to the plurality of protrusions may be formed on an inner circumferential surface of the filter holder, and the cylinder may be coupled to the rear of the accommodating part.
  • the piston is inserted into the inside of the cylinder and the piston body moving in one direction, the gasket is coupled to the front end of the piston body and is formed to protrude in the front end of the piston body, the gasket is formed in the It may include a fastening portion for coupling to the piston body.
  • the fixing member is formed with a locking projection protruding rearward in the rear end
  • the fastening portion is formed with a fastening groove in the front end
  • the support jaw extending in the inward direction is formed on the inner surface of the fastening groove
  • the piston body may be formed with a recessed groove recessed inwardly between the fastening portion and the rear end of the piston body.
  • a syringe having a filter structure for a syringe according to an embodiment of the present invention includes a filter structure so that the injection process is performed by passing through the filter member when injecting the injection liquid to the patient without injecting the injection liquid into the syringe. It is simple and can prevent foreign objects from being injected into the patient.
  • the syringe having a filter structure prevents reuse of the needle and at the same time prevents the needle from exiting the outside, thereby preventing a safety accident in the needle during the disposal of the syringe.
  • FIG. 1 is a perspective view showing a syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • Figure 2 is an exploded perspective view showing a syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • FIG 3 is a cross-sectional view showing a syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • Figure 4 is a perspective view showing a filter structure for a syringe according to an embodiment of the present invention.
  • Figure 5 is a perspective view showing a cross section of the filter holder of the filter structure for a syringe according to an embodiment of the present invention.
  • Figure 6 is a perspective view showing a cross section of the filter body of the filter structure for a syringe according to an embodiment of the present invention.
  • FIG. 7 is a cross-sectional view showing that the injection liquid is introduced into the syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • FIG. 8 is a cross-sectional view showing that the injection liquid is discharged to the syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • FIG. 9 is a cross-sectional view showing a state in which the engaging projection of the syringe having a filter structure for a syringe according to an embodiment of the present invention coupled to the support jaw.
  • FIG. 10 is a cross-sectional view illustrating pushing a piston of a syringe backward having a filter structure for a syringe according to an embodiment of the present invention.
  • FIG. 11 is a perspective view illustrating a broken groove of a syringe having a filter structure for a syringe according to an embodiment of the present disclosure exposed and broken outside the cylinder.
  • the injection means a substance in which foreign substances such as a chemical solution and glass particles are mixed.
  • FIG. 1 is a perspective view showing a syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • the cover side is set forward in the piston, and the piston side is defined rearward in the cover.
  • a syringe 1 including a syringe filter structure 3 includes a needle hub 30, a cylinder 10, a piston 20, and a filter structure 3. ) May be included.
  • the syringe 1 including the filter structure 3 for a syringe according to an embodiment of the present invention includes a filter structure when injecting the injection liquid into the syringe, and when the injection liquid is injected into the patient without passing through the filter member 80.
  • the filter member 80 By passing through the filter member, the injection process is simple, but foreign matters may not be injected into the patient.
  • Figure 2 is an exploded perspective view showing a syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • 3 is a cross-sectional view showing a syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • the needle hub 30 may include a fixing member 31 on which the needle 37 is mounted, and a cover 39 covering the needle. .
  • the injection needle 37 may be mounted to the front portion of the fixing member 31.
  • a locking protrusion 33 may be formed at the rear portion of the fixing member 31.
  • the fixing member 31 has a cylindrical shape at least partially to the receiving portion (S) of the filter holder 51, for example, as shown in Figure 3, the fixing member is inserted and fixed Can be.
  • the rear end surface of the locking protrusion 33 has a second cross section in a state where the fixing member 31 penetrates through the receiving portion S in a triangular cross section. It may be supported by the support jaw 25 of the fastening portion (23).
  • an elastic hole 35 may be formed on the outer surface of the locking protrusion 33.
  • the elastic hole 35 may be formed perpendicularly to the longitudinal direction of the locking projection 33. At this time, the locking protrusion 33 may increase the support force supported by the support jaw 25 by the elastic hole 35 is elastically deformed.
  • a passage hole 31a may be formed on the outer circumferential surface of the fixing member 31.
  • the through hole 31a is located between the needle 37 and the elastic hole 35 connected to the front portion of the fixing member is connected to the injection needle can be injected or discharged through the through hole.
  • the through hole 31a may be formed in the front portion of the fixing member.
  • the through hole 31a may have a circular cross section, but is not limited thereto.
  • the cylinder 10 may have a cylindrical shape, and a flow hole 11a may be formed at the center thereof so that the injection liquid may be stored therein.
  • the first fastening part 11 may be formed in the front part of the cylinder 10 so that the filter holder 51 may be coupled.
  • the first fastening part 11 may have a cylindrical shape and a flow hole 11a may be formed at the center thereof.
  • the first fastening part 11 since the first fastening part 11 is smaller than the diameter of the cylinder 10, the first fastening part may be inserted into the receiving part S of the filter holder 51 so that the cylinder and the filter holder may be fitted to each other.
  • the first protrusion 12 may extend in the circumferential direction on the outer circumferential surface of the first fastening part so that the first fastening part 11 is not coupled to the filter holder 51.
  • the first protrusion 12 may be inserted into and fitted into the fitting groove 51a extending in the circumferential direction on the inner circumferential surface of the filter holder 51.
  • the first protrusion 12 may be formed to correspond to the fitting groove (51a).
  • the cylinder 10 is coupled to the receiving portion S of the filter holder 51 so that the filter holder may be fixed to the cylinder even in the flow of the injection liquid.
  • a plurality of support protrusions 14 protruding inwardly may be formed at the front end of the first fastening part 11.
  • the support protrusion 14 may support the filter body 60 and the first check valve 70 so as not to fall out backward.
  • the filter structure 3 is installed inside the filter holder 51, and the first fluid path through which the injection liquid flows in one side is discharged from the cylinder on the other side. It may include a filter unit 50 in which two fluid paths are formed.
  • the first fluid path may be formed at the right side of the accommodating part S, and the second fluid path may be formed at the left side of the accommodating part.
  • the first fluid path may be a passage hole 31 a and a first suction hole 67
  • the second fluid path may be the second discharge hole 75, the first discharge hole 69, and the passage hole 31 a. Can be.
  • the filter structure 3 has a simple and easy injection process by passing the filter member when injecting the injection liquid to the patient without passing the filter member 80 when injecting the injection into the syringe. It is possible to prevent the free particles from being injected into the patient.
  • the filter unit 50 is installed in the receiving unit S of the filter holder 51 coupled to the front of the cylinder 10, so that the first check valve 70, the filter body ( 60), the filter member 80 and the second check valve 90 may be included.
  • the filter structure 3 may include a filter unit 50 to filter foreign substances contained in the injection liquid when the injection liquid is discharged.
  • the injection member 37 is fixed to the receiving portion S by fixing the fixing member 31 on which the injection needle 37 is mounted on the front portion of the filter holder 51.
  • the injection liquid may be introduced into the cylinder 10 through or discharged to the outside of the cylinder.
  • Figure 4 is a perspective view showing a filter structure for a syringe according to an embodiment of the present invention.
  • Figure 5 is a perspective view showing a cross section of the filter holder of the filter structure for a syringe according to an embodiment of the present invention.
  • the filter holder 51 may have a cylindrical shape and an accommodating part S in which a part of the filter part 50 and the cylinder 10 may be accommodated may be formed.
  • a first pillar portion 53 protruding forward may be formed at the center of the filter holder 51.
  • the first pillar part 53 may have a cylindrical shape, and a fixing hole 53a may be formed in the center of the first pillar part so that the fixing member 31 is inserted and fixed.
  • the fixing hole 53a and the receiving portion S may have a circular cross section, and the diameter of the fixing hole may be smaller than the diameter of the receiving portion.
  • the fixing hole 53a and the receiving portion S are connected.
  • the diameter of the first pillar portion 53 may be smaller than the diameter of the filter holder 51.
  • the filter holder 51 may be formed with a locking projection 55 protruding inwardly in the front portion of the receiving portion (S).
  • the filter holder 51 may be connected to the first pillar portion 53 through the locking jaw 55.
  • the filter unit 50 accommodated in the receiving portion S of the filter holder 51 through the locking step 55 may be prevented from falling out forward. That is, referring to FIG. 3, the second check valve 90 accommodated in the receiving portion S of the filter holder 51 may be prevented from falling out of the filter holder due to the locking step 55.
  • the locking projection 55 may be provided with a first protrusion 57 and a second protrusion 59 protruding backward.
  • the plurality of first protrusions 57 may be formed to be spaced apart in the circumferential direction on the right side of the locking projection 55.
  • Figure 6 is a perspective view showing a cross section of the filter body of the filter structure for a syringe according to an embodiment of the present invention.
  • 7 is a cross-sectional view showing that the injection liquid is introduced into the syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • the first protrusion 57 contacts one side of the second check valve 90, for example, the front right side surface of the second check valve, so that the second check valve is pulled forward. Can be prevented.
  • the plurality of second protrusions 59 may be formed to be spaced apart in the circumferential direction on the left side of the locking step 55.
  • the second protrusion 59 is formed on the other side of the second check valve 90, for example, to be spaced apart from the left side so that the second check valve 90 can elastically deform.
  • the moving space S2 may be formed.
  • the receiving part S formed inside the filter holder 51 includes a first check valve 70, a filter body 60, a filter member 80, and a second check valve 90. ) Can be accommodated.
  • the fixing member 31 is inserted into the receiving portion S of the filter holder 51 and the fixing hole 53a of the first pillar portion 53. Can be.
  • a second check valve 90 is provided at a rear portion of the locking step 55 of the filter holder 51.
  • the filter body 60, the filter member 80 and the first check valve 70 may be combined in sequence, but is not limited to this order.
  • the filter structure 3 includes a first check valve 70 and a second check valve 90 so that the first fluid path and the second fluid path are different directions by the check valve structure. Only open as possible.
  • the first check valve 70 may selectively block the first fluid path to introduce the injection liquid into the cylinder 10 through the first fluid path.
  • the second check valve 90 may block the second fluid path to discharge the injection liquid to the outside of the cylinder 10 through the second fluid path.
  • the filter member 80 may be installed on the second fluid path and may filter the injection liquid discharged through the first check valve 70.
  • the filter structure 3 may include a filter body 60.
  • the filter body 60 may be positioned between the second check valve 90 and the filter member 80 in a T-shaped longitudinal section.
  • the filter body 60 in one embodiment of the present invention may include an outer cylinder portion 61, the inner cylinder portion 63 and the extension tube (65).
  • the front of the filter body 60 supports the second check valve 90, the rear portion of the filter member 80 is in close contact with the first check valve (70).
  • the outer cylinder portion 61 may be inserted into and fixed to the receiving portion S of the filter holder 51 as a cylindrical shape.
  • an inner cylinder portion 63 connected to the outer cylinder portion 61 may be formed inside the outer cylinder portion 61.
  • the inner cylinder portion 63 has a cylindrical shape and a first suction hole 67 on the first fluid path and a first discharge hole 69 on the second fluid path between the outer cylinder portion 61 and the inner cylinder portion 63. Can be formed.
  • the inner cylinder portion 63 is connected to the extension tube 65 at the rear.
  • Extension tube 65 may be formed to extend to the rear of the inner cylinder (63).
  • a first coupling hole 65a may be formed at the center of the inner tube portion 63 and the extension tube 65.
  • the first coupling hole 65a may be formed to correspond to the outer circumferential surface of the second pillar part so that the second pillar part 93 of the second check valve 90 may be fitted and fixed.
  • the inner circumferential surface of the first coupling hole 65a may be stepped so that the fixing member 31 may be inserted into and fixed to the first coupling hole 65a.
  • the first coupling hole 65a may be connected to the third coupling hole 93a of the second check valve 90.
  • first suction hole 67 and the first discharge hole 69 may extend in the circumferential direction and be formed in an arc shape.
  • a plurality of first discharge holes 69 may be spaced apart from each other.
  • the first suction hole 67 and the first discharge hole 69 may be formed to face each other on concentric circles.
  • the first suction hole 67 may be formed at the right side of the filter body 60, and the first discharge hole 69 may be formed at the left side of the filter body.
  • the first fluid path and the second fluid path may be spaced apart.
  • the filter body 60 has a first discharge hole 69 through which the injection liquid is discharged around the first coupling hole 65a formed at the center thereof, and a first suction through which the injection liquid is introduced.
  • the hole 67 may be formed to penetrate in the longitudinal direction of the filter body.
  • the first discharge hole 69 and the first suction hole 67 may extend in the circumferential direction and may be formed around the first coupling hole to surround at least a portion of the first coupling hole 65a. have.
  • a coupling part 66 protruding to the rear side of the filter body 60 may be formed.
  • the coupling part 66 may have a polygonal cross section, but is not limited thereto and may be formed and fitted to correspond to the insertion hole 77 of the first check valve 70.
  • the coupling portion 66 is formed to be spaced apart from each other in a pair may be coupled to the pair of insertion holes 77.
  • the second check valve 90 is located at the front of the filter body 60, that is, the outer cylinder portion 61 and the inner cylinder portion (63). At this time, the second check valve 90 is inserted into the first coupling hole 65a and connected to the filter body 60. Through this, the filter body 60 may support the second check valve 90.
  • the second check valve 90 may include a disc 91 and a second pillar 93 having a T-shaped longitudinal section.
  • the disk portion 91 may be disposed in close contact with the front surface of the filter body 60 in a disk shape.
  • the disc 91 may be formed at the front of the second check valve 90 to selectively block the first discharge hole 69 of the filter body 60 when the injection liquid is introduced or discharged.
  • FIG. 8 is a cross-sectional view showing that the injection liquid is discharged to the syringe having a filter structure for a syringe according to an embodiment of the present invention.
  • the disc part 91 is disposed to be spaced apart rearward from the catching jaw 55 of the filter holder 51, and the second check valve is in close contact with the first discharge hole 69 between the catching jaw and the disc.
  • a second moving space S1 may be formed to allow the 90 to be spaced apart from the first discharge hole 69.
  • a first fluid path may be formed between the nozzles) and the injection liquid may be discharged through the first fluid path.
  • At least a portion of the disc 91 of the second check valve 90 is, for example, as shown in FIG. 8, the left end of the disc is made of an elastic material, so that the disc is elastically deformed.
  • the first discharge hole 69 of the filter body 60 may be selectively blocked.
  • the second pillar portion 93 may protrude rearward from the disc portion 91 in a cylindrical shape.
  • the second pillar 93 may be inserted into the first coupling hole 65a of the filter body 60 to be coupled to the filter body.
  • a third coupling hole 93a may be formed in the center of the second check valve 90, that is, the disc 91 and the second pillar 93 so that the fixing member 31 may be inserted and fixed. have.
  • the first check valve 70 blocks the first suction hole 67, and the disc 91 of the second check valve 90 filters the filter.
  • the injection liquid may be discharged to the outside of the cylinder 11 through the first discharge hole 69 and the second discharge hole 75.
  • the filter member 80 may have a disc shape, and an opening 80a having a circular cross section may be formed at the center thereof.
  • the extension member 65 of the filter body 60 is inserted into the opening 80a of the filter member 80 so that the filter member may be fixed between the filter body and the first check valve 70.
  • the filter member 80 may be formed to cover the second discharge hole 75 of the first check valve 70 to pass through the filter member when the injection liquid passes through the second discharge hole.
  • one end of the filter member 80 for example, as shown in Figure 2, the left side of the filter member is thicker than the second discharge hole 75 may be formed to cover the second discharge hole (75). .
  • the filter structure 3 allows the filter member 80 to pass through only when the injection liquid is discharged, so that the injection liquid can be easily sucked during inhalation.
  • the filter member 80 has a density capable of filtering foreign matter contained in the injection liquid passing through the second discharge hole 75, various materials may be used regardless of the type.
  • the first check valve 70 may include an outer ring portion 71 and an inner ring portion 73 having a T-shaped longitudinal section. In one embodiment of the present invention, the first check valve 70 may be disposed in close contact with the rear surface of the filter member 80.
  • the outer ring portion 71 may be accommodated in the receiving portion (S1) of the filter holder 51 in the shape of a disk.
  • An inner ring portion connected to the outer ring portion may be formed inside the outer ring portion 71.
  • a second discharge hole 75 is formed on the second fluid path between the outer ring portion 71 and the inner ring portion 73 so that the injection liquid may be discharged.
  • the inner ring portion 73 may have a circular cross section, and a second coupling hole 73a may be formed at the center of the inner ring portion 73.
  • the extension pipe 65 of the filter body 60 may be inserted into the second coupling hole 73a to make the filter member 80 closely contact the front surface of the first check valve 70.
  • the second discharge hole 75 may be formed to penetrate in the longitudinal direction of the first check valve around the second coupling hole 73a formed at the center of the first check valve 70. Can be.
  • the second discharge hole 75 may extend in the circumferential direction and be formed around the second coupling hole to surround at least a portion of the second coupling hole 73a.
  • At least a portion of the outer ring portion 71 of the first check valve 70 is formed of an elastic material at the right side of the outer ring portion, for example, as shown in FIG. Can be selectively blocked when the first suction hole 67 of the filter body (60).
  • the first check valve 70 is disposed to be spaced apart from the front end of the cylinder 10 in front of the first check valve in close contact with the first suction hole 67 between the front end of the cylinder and the first check valve.
  • a first moving space S1 may be formed to allow the 70 to be spaced apart from the first suction hole 67.
  • a first fluid path may be formed between the inner circumferential surfaces of the injectable liquid.
  • At least a portion of the first check valve 70 and the second check valve 90 for example, the outer ring portion 71 of the first check valve and the disc portion 91 of the second check valve.
  • the first check valve 70 and the second check valve 90 should be excellent in elasticity and harmless to hygiene.
  • the filter structure 3 may be installed in the filter holder 51. That is, the filter holder 51 is coupled to the front portion of the cylinder 10, the piston 20 is inserted into the rear portion of the cylinder 10 is coupled to move up, down.
  • the piston 20 may include a piston body 21 and a gasket 29.
  • the piston body 21 may include a second fastening portion 23 protruding forward to allow the gasket 29 to be coupled to the front portion. .
  • the second fastening portion 23 is formed in the center of the piston body 21 in a cylindrical shape is fitted with the gasket (29).
  • the second fastening part 23 may have a fastening groove 23a formed at the front end thereof.
  • a support jaw 25 protruding inwardly may be formed at the inner front end portion of the fastening groove 23a to support the locking protrusion 33 of the fixing member 31.
  • FIG. 9 is a cross-sectional view showing a state in which the engaging projection of the syringe having a filter structure for a syringe according to an embodiment of the present invention coupled to the support jaw.
  • FIG. 10 is a cross-sectional view illustrating pushing a piston of a syringe backward having a filter structure for a syringe according to an embodiment of the present invention.
  • FIG. 11 is a perspective view illustrating a broken groove of a syringe having a filter structure for a syringe according to an embodiment of the present disclosure exposed and broken outside the cylinder.
  • the fixing member 31 sequentially penetrates through the third coupling hole 93a, the first coupling hole 65a, and the second coupling hole 73a to be inside the coupling groove 23a.
  • the rear end surface of the locking protrusion 33 may be supported by the support jaw 25.
  • a second protrusion 27 protruding outward may be formed on an outer circumferential surface of the second fastening part 23. As shown in FIG. 2, the second protrusion 27 is inserted into the fastening hole 29a of the gasket 29 to allow the piston body 21 to be coupled to the gasket 29.
  • the piston body 21 may be formed with a bent groove 21a to be spaced backward from the second fastening part 23.
  • the bending grooves 21a are recessed in the inner direction of the piston body so as to be easily bent when an external force is applied to the piston body 21 at right angles.
  • the gasket 29 may be inserted into the cylinder 10 so as to be movable and made of rubber or a flexible synthetic resin having excellent sealing properties. At this time, the gasket 29 moves in close contact with the inner circumferential surface of the cylinder 10.
  • the gasket 29 has a cylindrical shape, and a fastening hole 29a is formed at the center of the gasket so that the second protrusion 27 of the second fastening portion 23 is inserted and coupled thereto. Can be.
  • the first check valve 70 that is, the right end portion of the outer ring portion 71, when the injection liquid is sucked in, pressurization increases, and elastically deforms backwards, so that the first suction hole 67 of the filter body 60 is formed. ) Is spaced apart.
  • the injection liquid passes through a first fluid path formed in the center portion, for example, a passage hole 31a, a first suction hole 67, and a space between the first check valve 70 and the gasket 29 of the piston 20. Flows into.
  • the space between the first check valve 70 and the gasket 29 of the piston 20 is formed to have a relatively high pressure, and thus the second check is performed.
  • the valve 90 that is, the left end of the disc 91 is spaced apart from the first discharge hole 69 of the filter body 60.
  • the injection liquid is discharged to the outside of the cylinder through the second fluid path, for example, the second discharge hole 75, the first discharge hole 69, and the passage hole 31a.
  • the syringe 1 which has discharged all of the injection liquid further pushes the piston 20 forward so that the locking protrusion 33 of the fixing member 31 supports the support jaw of the piston body 21. (25).
  • the piston 20 is pulled backward so that the needle 37 completely enters the interior of the cylinder 10 so that the bending groove 21a formed in the piston body 21 is exposed to the outside of the cylinder.
  • the syringe 1 including the filter structure according to an embodiment of the present invention prevents reuse of the needle and at the same time prevents the needle from coming out to the outside, so that the safety accident is stuck on the needle in the process of discarding the syringe. You can prevent it.
  • a syringe including a filter structure for a syringe according to an embodiment of the present invention includes a filter structure so that the injection process is performed by passing through the filter member when injecting the injection liquid to the patient without injecting the injection liquid into the syringe. It is simple and can prevent foreign objects from being injected into the patient.
  • a syringe having a filter structure for a syringe according to an embodiment of the present invention includes a filter structure so that the injection process is performed by passing through the filter member when injecting the injection liquid to the patient without injecting the injection liquid into the syringe. It is simple and can prevent foreign objects from being injected into the patient.
  • the syringe having a filter structure prevents reuse of the needle and at the same time prevents the needle from exiting the outside, thereby preventing a safety accident in the needle during the disposal of the syringe.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne une structure de filtre de seringue. Cette structure de filtre de seringue comprend une partie filtre placée entre un cylindre et une aiguille d'injection et connectée à l'aiguille d'injection pour filtrer une solution d'injection, qui est introduite par le côté arrière du cylindre, lors de l'expulsion de la solution d'injection à travers l'aiguille d'injection raccordée à la face avant du cylindre, la partie filtre présentant sur un de ses côtés un premier passage de fluide à travers lequel la solution d'injection est introduite et sur son côté opposé un second passage de fluide à travers lequel la solution d'injection est expulsée du cylindre, la partie filtre comprenant : un premier clapet anti-retour connecté au cylindre et bloquant de façon sélective le premier passage de fluide pour introduire la solution d'injection dans le cylindre à travers le premier passage de fluide; un second clapet anti-retour connecté à l'aiguille d'injection et bloquant de façon sélective le second passage de fluide pour expulser la solution d'injection du cylindre à travers le second passage de fluide; un élément filtre disposé dans le second passage de fluide et filtrant la solution d'injection expulsée à travers le premier clapet anti-retour; et un corps de filtre situé entre le second clapet anti-retour et l'élément filtre et raccordé au second clapet anti-retour sur son côté avant et au premier clapet anti-retour sur son côté arrière pour amener l'élément filtre en contact étroit avec le premier clapet anti-retour.
PCT/KR2015/011885 2015-08-24 2015-11-06 Structure de filtre de seringue et seringue comprenant cette structure Ceased WO2017034080A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150119058A KR101596941B1 (ko) 2015-08-24 2015-08-24 주사기용 필터 구조체 및 이를 구비한 주사기
KR10-2015-0119058 2015-08-24

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WO2017034080A1 true WO2017034080A1 (fr) 2017-03-02

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Publication number Priority date Publication date Assignee Title
KR101723820B1 (ko) * 2016-02-26 2017-04-06 (주)지 메디 의료용 필터안전주사기
KR101764326B1 (ko) 2016-06-28 2017-08-03 주식회사 사라야코리아 수동 후퇴형 안전 주사기
KR101720986B1 (ko) * 2016-08-23 2017-04-10 협성메디칼 주식회사 주사 바늘 인입 및 주사액 필터링 기능을 동시에 갖춘 주사기
KR102059340B1 (ko) 2019-02-22 2019-12-26 주식회사 인성메디칼 필터 주사기

Citations (4)

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Publication number Priority date Publication date Assignee Title
KR101282209B1 (ko) * 2012-06-01 2013-07-04 백우인 일회용 안전 주사기
KR101521884B1 (ko) * 2015-01-09 2015-05-28 (주)엠에스디바이스 필터 주사기
KR20150065980A (ko) * 2013-12-05 2015-06-16 (주)엠에스피바이오메디컬 필터 밸브 및 이를 포함하는 주사기
KR101532413B1 (ko) * 2015-04-17 2015-06-30 고종원 안전필터 기능을 갖는 일회용 주사기

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101282209B1 (ko) * 2012-06-01 2013-07-04 백우인 일회용 안전 주사기
KR20150065980A (ko) * 2013-12-05 2015-06-16 (주)엠에스피바이오메디컬 필터 밸브 및 이를 포함하는 주사기
KR101521884B1 (ko) * 2015-01-09 2015-05-28 (주)엠에스디바이스 필터 주사기
KR101532413B1 (ko) * 2015-04-17 2015-06-30 고종원 안전필터 기능을 갖는 일회용 주사기

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