US2857913A - Hypodermic needle assembly - Google Patents

Hypodermic needle assembly Download PDF

Info

Publication number
US2857913A
US2857913A US650394A US65039457A US2857913A US 2857913 A US2857913 A US 2857913A US 650394 A US650394 A US 650394A US 65039457 A US65039457 A US 65039457A US 2857913 A US2857913 A US 2857913A
Authority
US
United States
Prior art keywords
recess
section
needle assembly
hub
intravenous
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.)
Expired - Lifetime
Application number
US650394A
Inventor
John J Miskel
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.)
Pfizer Inc
Original Assignee
Pfizer Inc
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 Pfizer Inc filed Critical Pfizer Inc
Priority to US650394A priority Critical patent/US2857913A/en
Application granted granted Critical
Publication of US2857913A publication Critical patent/US2857913A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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

Definitions

  • This invention relates to a hypodermic needle assembly for intravenous use, and more particularly relates to such an assembly which includes means for filtering impurities from administered fluids.
  • Intravenous hypodermic needles are used for introducing fluids, pharmaceutical preparations, for example, into the blood stream.
  • impurities may be introduced through the needle as a result of conventional administering techniques.
  • the containers or vials of preparations are usually sealed by a rubber stopper which is punctured to allow its contents to be drained or drawn off and introduced or injected into the blood stream of the patient. Particles of the punctured stopper may consequently find their way through the administering system into the blood stream.
  • a glass syringe is employed in introducing an adjunct drug into the intravenous solution, fine particles of glass are also introduced due to the abrasion of the glass syringe piston against the wall of the syringe barrel.
  • An object of this invention is to provide an intravenous hypodermic needle assembly having a structure which insures that no foreign particles will pass through it and enter into the blood stream of the patient.
  • Another object is to provide an intravenous hypodermic assembly as aforementioned which is simple and economical to manufacture.
  • an intravenous hypodermic assembly includes a sheet of filter material which is retained firmly in filtering position within the bore of the needle between the abutting edges of the shoulder of a recess formed in one section of the needle and the end of another section which is inserted within this recess.
  • These two sections may be conveniently permanently assembled by means of a press fit to maintain a flat disc-shaped filtering screen, for example, in operative position.
  • These telescoping filter retaining sections of the needle assembly may be conveniently formed, for example, by a recess in the hub cooperating with the inserted end of either a cannula, a sleeve, or another portion of the hub itself.
  • Fig. 1 is a view in elevation partially broken away in cross section of one embodiment of this invention
  • Fig. 2 is a view in elevation partially broken away in cross section of another embodiment of this invention.
  • Fig. 3 is a view in elevation partially broken away in cross section of still another embodiment of this invention.
  • Fig. 4 is a view in elevation partially broken away in cross section of a further embodiment of this invention.
  • Fig. 5 is a view in elevation of a filter screen which 70 may be used in any of the embodiments shown in Figs.
  • r' CC Fig. 6 is a view in elevation of another filter screen which may be used in any of the embodiments shown in Figs. 1-4.
  • Fig. 1 an intravenous hypodermic needle assembly 10 including a pair of telescoping sections-12 and 14.
  • Section 12 for example, is the hypodermic needle or cannula including a flesh piercing point 16; and section 14, for example, is the hub including an optional flange 18 and an inlet end 20 which is tapered at 22 and indented by circumferential recesses 24, for facilitating the attachment and retention of the rubber hose which conducts the intravenous solution to the needle assembly.
  • a recess 26, cylindrical for example, is formed in the end of the hub 14 engaging the needle 12.
  • the diameter of this recess is selected to provide a substantially permanent press-fitted joint when needle 12 is firmly inserted therein.
  • a sheet of filter material 28, of a size and configuration permitting it to fit within the recess with its edge overlying the shoulder 30 formed by the transition of the bore or passageway 32 through the hub to the recess 26, is placed in position.
  • Sheet 28 is for example, a fiat circular disc or filter material as designated by 28 in Fig. 5, and 28 in Fig. 6 which are later described in detail.
  • Sheet 28 is, for example, made smaller in diameter than the diameter of cylindrical recess 26 so that it may quickly and easily be introduced within the recess before insertion of the needle.
  • Shoulder 30 is machined square, for example, to cooperate with the correspondingly squared end of the inserted section 12. After section 12 is inserted firmly within the recess 26, its end 34 and the shoulder 30 of recess 26 abut opposite edges of the periphery of filter sheet 28 to retain it firmly in filtering position in line with the bore 32 of the hub 14 and the corresponding bore or passageway 36 through section 12.
  • FIG. 2 is shown an intravenous hypodermic needle assembly 10a which is similar to needle 10 shown in Fig. l in that it is intended for intravenous administration in conjunction with gravity infusion from a raised container of preparation by means of rubber hoses (not shown) connecting the container to the inlet end 20a of the hub.
  • Assembly 10a is similar to assembly 10 with the exception that the telescoping sections 14a and 15a are provided, for example, by two portions of the hub of the needle assembly.
  • section 14a has an end 37 which is reduced in diameter and is inserted within a recess 27 in hub section 15a and through optional flange 18a.
  • Screen 28a is held in filtering position by abutment of the end of section 14a and the shoulder 29 within recess 27.
  • Flange 18a is simultaneously secured between shoulder 40 on hub section 14a and the annular end 42 of hub section 15a.
  • Fig. 3 an intravenous hypodermic assembly 12b which is intended for use with conventional hypoderrnic syringes, of the Luer type for example, having a snout which intimately engages the tapered recess 43 formed within needle hub 14b.
  • the mode of retention of screen filter material 28b is identical to that shown in Fig. l in which the end 34b of cannula 12b retains the screen in cooperation with the shoulder 30b of recess 26b formed within hub 14b.
  • FIG. 4 is shown another Luci-type intravenous hypodermic needle assembly 100 in which a sheet of filter material 28c is retained against a shoulder 45 within recess 46 formed in the inlet end of hub 140. End 480 of sleeve 44 inserted in press fit relationship within recess 46 maintains filter 28c securely in operative position.
  • Sleeve 44 is tapered internally at 47 to provide a surface for cooperating with the insertable tapered snout of a hypodermic syringe (not shown).
  • Fig. 5 is shown a flat disc of filter material, for example, a conventional stainless steel filtering screen 28;
  • This screen may be used for filtering relatively coarse particles of impurities from the intravenous solution.
  • Fig. 6 a disc 28 of standard micron filter material, stainless steel for example, which is perforated to allow particles only smaller than 300 r'nicronsize, for example, to pass through it. Micron filters with still smaller perforations may be utilized to prevent the passage of still smaller particles.
  • An intravenous hypodermic needle assembly comprising a pair of telescoping sections, said sections including aligned bores for conducting fluid through said needle assembly, the end of one of said sections being inserted within a recess forming a continuation of said bore of the other of said sections, a sheet of filter material of a size and configuration permitting it to fit within said recess with its edge overlying the shoulder formed by the transition of said bore to said recess, the end of said inserted section and said shoulder being cooperatively constructed and arranged to abut the edge of said sheet of filter material to retain it firmly in filtering position within said bore, said telescoping sections being portions of the hub of said needle assembly, said assembly including a flange, the inserted end of the inner telescoping section of the hub being smaller in cross section than the uninserted portion, an outer shoulder being formed by the transition from the inserted end of said inner telescoping section to said uninserted portion, and said flange being retained in position between said outer shoulder and the end of the outer telescoping section
  • An intravenous hypodermic needle assembly comprising a pair of telescoping sections, said sections including aligned bores for conducting fluid through said needle assembly, the end of one of said sections being inserted within a recess forming a continuation of said bore of the other of said sections, a sheet of filter material of a size and configuration permitting it to fit within said recess with its edge overlying the shoulder formed by the transition of said bore to said recess, the end of said inserted section and said shoulder being cooperatively constructed and arranged to abut the edge of said sheet of filter material to retain it firmly in filtering position within said bore, and said sections being comprised of a recess within the inlet end of said hub and a sleeve inserted therein.

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)

Description

Oct. 28; 1958 J. J. MISKEL HYPODERMIC NEEDLE ASSEMBLY Filed April 5, 1957 ATTORNEY5 United States Patent HYPODERMIC NEEDLE ASSEMBLY John J. Miskel, Brooklyn, N. Y., assignor to Chas. Pfizer & Co., Brooklyn, N. Y., a corporation of Delaware Application April 3, 1957, Serial No. 650,394
3 Claims. (Cl. 128-221) This invention relates to a hypodermic needle assembly for intravenous use, and more particularly relates to such an assembly which includes means for filtering impurities from administered fluids.
Intravenous hypodermic needles are used for introducing fluids, pharmaceutical preparations, for example, into the blood stream. Although elaborate precautions are taken to insure that these fluids are maintained sterile and pure, a strong possibility still exists that impurities may be introduced through the needle as a result of conventional administering techniques. For example, the containers or vials of preparations are usually sealed by a rubber stopper which is punctured to allow its contents to be drained or drawn off and introduced or injected into the blood stream of the patient. Particles of the punctured stopper may consequently find their way through the administering system into the blood stream. Further if a glass syringe is employed in introducing an adjunct drug into the intravenous solution, fine particles of glass are also introduced due to the abrasion of the glass syringe piston against the wall of the syringe barrel.
An object of this invention is to provide an intravenous hypodermic needle assembly having a structure which insures that no foreign particles will pass through it and enter into the blood stream of the patient.
Another object is to provide an intravenous hypodermic assembly as aforementioned which is simple and economical to manufacture.
In accordance with this invention, an intravenous hypodermic assembly includes a sheet of filter material which is retained firmly in filtering position within the bore of the needle between the abutting edges of the shoulder of a recess formed in one section of the needle and the end of another section which is inserted within this recess. These two sections may be conveniently permanently assembled by means of a press fit to maintain a flat disc-shaped filtering screen, for example, in operative position. These telescoping filter retaining sections of the needle assembly may be conveniently formed, for example, by a recess in the hub cooperating with the inserted end of either a cannula, a sleeve, or another portion of the hub itself.
Novel features and advantages of the present invention will become apparent to one skilled in the art from a reading of the following description in conjunction with the accompanying drawings wherein similar reference characters refer to similar parts and in which:
Fig. 1 is a view in elevation partially broken away in cross section of one embodiment of this invention;
Fig. 2 is a view in elevation partially broken away in cross section of another embodiment of this invention;
Fig. 3 is a view in elevation partially broken away in cross section of still another embodiment of this invention;
Fig. 4 is a view in elevation partially broken away in cross section of a further embodiment of this invention;
Fig. 5 is a view in elevation of a filter screen which 70 may be used in any of the embodiments shown in Figs.
1-4; and
r' CC Fig. 6 is a view in elevation of another filter screen which may be used in any of the embodiments shown in Figs. 1-4.
In Fig. 1 is shown an intravenous hypodermic needle assembly 10 including a pair of telescoping sections-12 and 14. Section 12, for example, is the hypodermic needle or cannula including a flesh piercing point 16; and section 14, for example, is the hub including an optional flange 18 and an inlet end 20 which is tapered at 22 and indented by circumferential recesses 24, for facilitating the attachment and retention of the rubber hose which conducts the intravenous solution to the needle assembly.
A recess 26, cylindrical for example, is formed in the end of the hub 14 engaging the needle 12. The diameter of this recess is selected to provide a substantially permanent press-fitted joint when needle 12 is firmly inserted therein. Prior to insertion of needle 12, a sheet of filter material 28, of a size and configuration permitting it to fit within the recess with its edge overlying the shoulder 30 formed by the transition of the bore or passageway 32 through the hub to the recess 26, is placed in position. Sheet 28, is for example, a fiat circular disc or filter material as designated by 28 in Fig. 5, and 28 in Fig. 6 which are later described in detail. Sheet 28 is, for example, made smaller in diameter than the diameter of cylindrical recess 26 so that it may quickly and easily be introduced within the recess before insertion of the needle.
Shoulder 30 is machined square, for example, to cooperate with the correspondingly squared end of the inserted section 12. After section 12 is inserted firmly within the recess 26, its end 34 and the shoulder 30 of recess 26 abut opposite edges of the periphery of filter sheet 28 to retain it firmly in filtering position in line with the bore 32 of the hub 14 and the corresponding bore or passageway 36 through section 12.
In Fig. 2 is shown an intravenous hypodermic needle assembly 10a which is similar to needle 10 shown in Fig. l in that it is intended for intravenous administration in conjunction with gravity infusion from a raised container of preparation by means of rubber hoses (not shown) connecting the container to the inlet end 20a of the hub. Assembly 10a is similar to assembly 10 with the exception that the telescoping sections 14a and 15a are provided, for example, by two portions of the hub of the needle assembly. In this case, section 14ahas an end 37 which is reduced in diameter and is inserted within a recess 27 in hub section 15a and through optional flange 18a. Screen 28a is held in filtering position by abutment of the end of section 14a and the shoulder 29 within recess 27. Flange 18a is simultaneously secured between shoulder 40 on hub section 14a and the annular end 42 of hub section 15a.
In Fig. 3 is shown an intravenous hypodermic assembly 12b which is intended for use with conventional hypoderrnic syringes, of the Luer type for example, having a snout which intimately engages the tapered recess 43 formed within needle hub 14b. The mode of retention of screen filter material 28b is identical to that shown in Fig. l in which the end 34b of cannula 12b retains the screen in cooperation with the shoulder 30b of recess 26b formed within hub 14b.
In Fig. 4 is shown another Luci-type intravenous hypodermic needle assembly 100 in which a sheet of filter material 28c is retained against a shoulder 45 within recess 46 formed in the inlet end of hub 140. End 480 of sleeve 44 inserted in press fit relationship within recess 46 maintains filter 28c securely in operative position. Sleeve 44 is tapered internally at 47 to provide a surface for cooperating with the insertable tapered snout of a hypodermic syringe (not shown).
In Fig. 5 is shown a flat disc of filter material, for example, a conventional stainless steel filtering screen 28;
of 100 mesh size. This screen may be used for filtering relatively coarse particles of impurities from the intravenous solution.
In Fig. 6 is shown a disc 28 of standard micron filter material, stainless steel for example, which is perforated to allow particles only smaller than 300 r'nicronsize, for example, to pass through it. Micron filters with still smaller perforations may be utilized to prevent the passage of still smaller particles.
What is claimed is:
1. An intravenous hypodermic needle assembly comprising a pair of telescoping sections, said sections including aligned bores for conducting fluid through said needle assembly, the end of one of said sections being inserted within a recess forming a continuation of said bore of the other of said sections, a sheet of filter material of a size and configuration permitting it to fit within said recess with its edge overlying the shoulder formed by the transition of said bore to said recess, the end of said inserted section and said shoulder being cooperatively constructed and arranged to abut the edge of said sheet of filter material to retain it firmly in filtering position within said bore, said telescoping sections being portions of the hub of said needle assembly, said assembly including a flange, the inserted end of the inner telescoping section of the hub being smaller in cross section than the uninserted portion, an outer shoulder being formed by the transition from the inserted end of said inner telescoping section to said uninserted portion, and said flange being retained in position between said outer shoulder and the end of the outer telescoping section of said hub.
2. An intravenous hypodermic needle assembly comprising a pair of telescoping sections, said sections including aligned bores for conducting fluid through said needle assembly, the end of one of said sections being inserted within a recess forming a continuation of said bore of the other of said sections, a sheet of filter material of a size and configuration permitting it to fit within said recess with its edge overlying the shoulder formed by the transition of said bore to said recess, the end of said inserted section and said shoulder being cooperatively constructed and arranged to abut the edge of said sheet of filter material to retain it firmly in filtering position within said bore, and said sections being comprised of a recess within the inlet end of said hub and a sleeve inserted therein.
3. An intravenous hypodermic needle assembly as set forth in claim 2 wherein said sleeve is internally tapered to engage the tapered snout of a hypodermic syringe.
References Cited in the file of this patent UNITED STATES PATENTS 2,335,799 Schwab Nov. 30, 1943
US650394A 1957-04-03 1957-04-03 Hypodermic needle assembly Expired - Lifetime US2857913A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US650394A US2857913A (en) 1957-04-03 1957-04-03 Hypodermic needle assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US650394A US2857913A (en) 1957-04-03 1957-04-03 Hypodermic needle assembly

Publications (1)

Publication Number Publication Date
US2857913A true US2857913A (en) 1958-10-28

Family

ID=24608720

Family Applications (1)

Application Number Title Priority Date Filing Date
US650394A Expired - Lifetime US2857913A (en) 1957-04-03 1957-04-03 Hypodermic needle assembly

Country Status (1)

Country Link
US (1) US2857913A (en)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186408A (en) * 1961-12-29 1965-06-01 Becton Dickinson Co Hypodermic needle mounting
US3224434A (en) * 1962-11-06 1965-12-21 Waldemar Medical Res Foundatio Cell collector
US3757780A (en) * 1971-02-25 1973-09-11 Ishikawa Susakusho Kk Needle assembly with longitudinally movable filter
US3933652A (en) * 1973-04-25 1976-01-20 Sherwood Medical Industries Inc. Process of manufacturing a porous, stainless steel filter element and sealing it in a tubular fitting, and resulting filter
US4043335A (en) * 1975-08-23 1977-08-23 Soji Ishikawa Needle holder device of medical administrating injector
US4061143A (en) * 1976-06-10 1977-12-06 Soji Ishikawa Medical administering needle assembly with filter means
US4200096A (en) * 1976-06-09 1980-04-29 Guy Charvin Device for introducing a liquid other than blood in a blood vessel
US4453927A (en) * 1979-02-07 1984-06-12 Gesco International Method and apparatus for microfiltration of blood
US5322514A (en) * 1992-08-19 1994-06-21 Sherwood Medical Company Needle assembly with detachable wing
EP0998978A2 (en) * 1998-11-06 2000-05-10 Millipore Corporation Universal outlet for filter units
US6554803B1 (en) * 1997-04-02 2003-04-29 Arthur Ashman Combination syringe and aspirator for bone regeneration material and method for using the syringe
US20040071668A1 (en) * 2002-10-10 2004-04-15 Bays F. Barry Bone marrow infusion chamber and method
US20050261625A1 (en) * 1997-04-02 2005-11-24 Arthur Ashman Nozzle tip for use with syringe and method for using same
US20080097353A1 (en) * 2006-10-23 2008-04-24 Sue Carr Filter needle
US20100202929A1 (en) * 2007-02-28 2010-08-12 Bruce Renslow Liquid sample collector interface
US9669164B2 (en) 2013-05-17 2017-06-06 Carrtech Llc Filtering needle cap having a sleeve sealing around a needle
US11857768B1 (en) 2022-10-01 2024-01-02 CARRTECH Corp. Filtering needle assembly with seal plug

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335799A (en) * 1940-12-17 1943-11-30 Martin C Schwab Apparatus for liquid dispensing and method of manufacture thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2335799A (en) * 1940-12-17 1943-11-30 Martin C Schwab Apparatus for liquid dispensing and method of manufacture thereof

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186408A (en) * 1961-12-29 1965-06-01 Becton Dickinson Co Hypodermic needle mounting
US3224434A (en) * 1962-11-06 1965-12-21 Waldemar Medical Res Foundatio Cell collector
US3757780A (en) * 1971-02-25 1973-09-11 Ishikawa Susakusho Kk Needle assembly with longitudinally movable filter
US3933652A (en) * 1973-04-25 1976-01-20 Sherwood Medical Industries Inc. Process of manufacturing a porous, stainless steel filter element and sealing it in a tubular fitting, and resulting filter
US4043335A (en) * 1975-08-23 1977-08-23 Soji Ishikawa Needle holder device of medical administrating injector
US4200096A (en) * 1976-06-09 1980-04-29 Guy Charvin Device for introducing a liquid other than blood in a blood vessel
US4061143A (en) * 1976-06-10 1977-12-06 Soji Ishikawa Medical administering needle assembly with filter means
US4453927A (en) * 1979-02-07 1984-06-12 Gesco International Method and apparatus for microfiltration of blood
US5322514A (en) * 1992-08-19 1994-06-21 Sherwood Medical Company Needle assembly with detachable wing
US6554803B1 (en) * 1997-04-02 2003-04-29 Arthur Ashman Combination syringe and aspirator for bone regeneration material and method for using the syringe
US20050261625A1 (en) * 1997-04-02 2005-11-24 Arthur Ashman Nozzle tip for use with syringe and method for using same
EP0998978A3 (en) * 1998-11-06 2000-10-04 Millipore Corporation Universal outlet for filter units
US6319236B1 (en) 1998-11-06 2001-11-20 Millipore Corporation Universal outlet for filter units
EP0998978A2 (en) * 1998-11-06 2000-05-10 Millipore Corporation Universal outlet for filter units
US20040071668A1 (en) * 2002-10-10 2004-04-15 Bays F. Barry Bone marrow infusion chamber and method
US7776594B2 (en) 2002-10-10 2010-08-17 Wright Medical Technology, Inc. Bone marrow infusion chamber and method
US20080097353A1 (en) * 2006-10-23 2008-04-24 Sue Carr Filter needle
US8002751B2 (en) 2006-10-23 2011-08-23 Sue Carr Filter needle
US20100202929A1 (en) * 2007-02-28 2010-08-12 Bruce Renslow Liquid sample collector interface
US7850919B2 (en) * 2007-02-28 2010-12-14 Bruce Renslow Liquid sample collector interface
US9669164B2 (en) 2013-05-17 2017-06-06 Carrtech Llc Filtering needle cap having a sleeve sealing around a needle
US10512728B2 (en) 2013-05-17 2019-12-24 Carrtech Llc Filtering needle cap with a seal around a needle
US11857768B1 (en) 2022-10-01 2024-01-02 CARRTECH Corp. Filtering needle assembly with seal plug

Similar Documents

Publication Publication Date Title
US2857913A (en) Hypodermic needle assembly
US3736932A (en) Injection apparatus with filter
US11197961B2 (en) Flush syringe assembly with controlled pulsatile flushing
JP4794463B2 (en) Positive pressure flushing syringe
US3739780A (en) Saf-t-jet
US3502097A (en) Catheter-infuser connector
US4066079A (en) Filter needle
US5603706A (en) Infusion apparatus
US4998713A (en) Needle connector
US2972991A (en) Disposable syringe
US3842833A (en) Neb-u-pack
US3817389A (en) Filter device in tubular fitting for medical injection equipment and the like
US4935015A (en) Syringe apparatus with retractable needle
US4084588A (en) Parenteral drug storage device with closure piercing coupling member
US5184652A (en) Universal medication port
US3757780A (en) Needle assembly with longitudinally movable filter
US5718690A (en) Hypodermic injector system and method for maintaining the sterility thereof prior to use
US6458101B1 (en) Safety syringe with retractable needle holder
US2586513A (en) Blood filter and drip meter
US7862539B2 (en) System and method for infusing toxins using safety set, connect set and cyto admin set
JPH11104215A (en) Glass bottle connector assembly
KR101513465B1 (en) Safety filter for syringe
NO833552L (en) SPRAYING DEVICE FOR AN INFUSION OR TRANSFUSION SYSTEM
WO1994026334A1 (en) Syringe for medicinal purposes
JPS6125805Y2 (en)