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A blunt needle plastic cannula for a syringe has a central axial passage terminating in a tip opening axially through one end thereof. Different axial sections along the cannula have respective differential resistances to movement relative to a membrane upon insertion of the cannula into the membran

A blunt needle plastic cannula for a syringe has a central axial passage terminating in a tip opening axially through one end thereof. Different axial sections along the cannula have respective differential resistances to movement relative to a membrane upon insertion of the cannula into the membrane. The opposite end of the cannula may have a Luer fit or Luer lock or may have integrally formed therewith an adapter for releasably connecting the adapter and cannula to the distal end of the barrel of the syringe. A syringe plunger and the adapter have connective structure whereby the adapter and cannula can be withdrawn into the interior of the barrel. The opposite ends of the barrel are sealed by portions of the plunger.

대표청구항 ▼

A blunt needle plastic cannula for a syringe has a central axial passage terminating in a tip opening axially through one end thereof. Different axial sections along the cannula have respective differential resistances to movement relative to a membrane upon insertion of the cannula into the membran

A blunt needle plastic cannula for a syringe has a central axial passage terminating in a tip opening axially through one end thereof. Different axial sections along the cannula have respective differential resistances to movement relative to a membrane upon insertion of the cannula into the membrane. The opposite end of the cannula may have a Luer fit or Luer lock or may have integrally formed therewith an adapter for releasably connecting the adapter and cannula to the distal end of the barrel of the syringe. A syringe plunger and the adapter have connective structure whereby the adapter and cannula can be withdrawn into the interior of the barrel. The opposite ends of the barrel are sealed by portions of the plunger. 70400, Warren; US-4023767, 19770500, Fontana; US-4051570, 19771000, Hilfiker; US-4067166, 19780100, Sheahan; US-4083190, 19780400, Pey; US-4098040, 19780700, Riefler; US-4098865, 19780700, Repasky; US-4107894, 19780800, Mullins; US-4110949, 19780900, Cambiuzzi et al.; US-4114773, 19780900, Sekiguchi; US-4124961, 19781100, Habegger; US-4126979, 19781100, Hancock; US-4132492, 19790100, Jenkins; US-4145454, 19790300, Dea et al.; US-4175888, 19791100, Ijima; US-4186540, 19800200, Mullins; US-4187069, 19800200, Mullins; US-4190384, 19800200, Neumann; US-4193718, 19800300, Wahrendorf et al.; US-4207718, 19800600, Schaaf et al.; US-4208850, 19800600, Collier; US-4214655, 19800700, Bernham et al.; US-4218206, 19800800, Mullins; US-4228628, 19801000, Schlomann; US-4229123, 19801000, Heinzmann; US-4238105, 19801200, West; US-4242299, 19801200, Adams; US-4250863, 19810200, Gagnon; US-4262463, 19810400, Hapel; US-4288960, 19810900, Auras; US-4312606, 19820100, Sarikelle; US-4314431, 19820200, Rabassa; US-4319440, 19820300, Rassias et al.; US-4324505, 19820400, Hammett; US-4335549, 19820600, Dean, Jr.; US-4337605, 19820700, Tudek; US-4372091, 19830200, Brown et al.; US-4380409, 19830400, O'Neill; US-4384810, 19830500, Neumann; US-4426176, 19840100, Terada; US-4426815, 19840100, Brown; US-4449857, 19840500, Davis; US-4454699, 19840600, Strobl; US-4470728, 19840900, Broadbent; US-4490075, 19841200, Risi et al.; US-4496266, 19850100, Ruckstuhl; US-4512685, 19850400, Hegle; US-D279030, 19850500, Risi et al.; US-4524551, 19850600, Scheiwiller; US-D280024, 19850800, Risi et al.; US-4565043, 19860100, Mazzayese; US-4572699, 19860200, Rinninger; US-D284109, 19860600, Seal, Jr.; US-4616959, 19861000, Hilfiker; US-4640071, 19870200, Haener; US-4651485, 19870300, Osborne; US-4658541, 19870400, Haile; US-4659304, 19870400, Day; US-4660342, 19870400, Salisbury; US-4661023, 19870400, Hilfiker; US-4671706, 19870600, Giardini; US-4684294, 19870800, O'Neill; US-4698949, 19871000, Dietrich; US-4711606, 19871200, Leling et al.; US-4721847, 19880100, Leverenz; US-4726567, 19880200, Greenberg; US-4728227, 19880300, Wilson et al.; US-4738059, 19880400, Dean, Jr.; US-D295788, 19880500, Forsberg; US-D295790, 19880500, Forsberg; US-D296007, 19880500, Forsberg; US-D296365, 19880600, Forsberg; US-D297464, 19880800, Forsberg; US-D297574, 19880900, Forsberg; US-D297767, 19880900, Forsberg; US-4770218, 19880900, Duerr; US-D298463, 19881100, Forsberg; US-4784821, 19881100, Leopold; US-D299067, 19881200, Forsberg; US-D299069, 19881200, Risi et al.; US-4802320, 19890200, Forsberg; US-4802836, 19890200, Whissell; US-D300253, 19890300, Forsberg; US-D300254, 19890300, Forsberg; US-4815897, 19890300, Risi et al.; US-4824293, 19890400, Brown et al.; US-D301064, 19890500, Forsberg; US-4825619, 19890500, Forsberg; US-4860505, 19890800, Bender; US-4884921, 19891200, Smith; US-4896472, 19900100, Hunt; US-4896999, 19900100, Ruckstuhl; US-4909010, 19900300, Gravier; US-4909717, 19900300, Pardo; US-4914876, 19900400, Forsberg; US-4936712, 19900600, Glickman; US-D311444, 19901000, Forsberg; US-4964761, 19901000, Rossi; US-4965979, 19901000, Larrivee et al.; US-D316904, 19910500, Forsberg; US-D317048, 19910500, Forsberg; US-D317209, 19910500, Forsberg; US-5017049, 19910500, Sievert, 405/284; US-5031376, 19910700, Bender et al.; US-5044834, 19910900, Janopaul, Jr.; US-5062610, 19911100, Woolford et al.; US-5104594, 19920400, Hillemeier et al.; US-5125815, 19920600, Kargarzadeh et al.; US-5139721, 19920800, Castonguay et al.; US-5158132, 19921000, Guillemot; US-5161918, 19921100, Hodel, 405/284; US-5261806, 19931100, Pleasant; US-5294216, 19940300, Sievert, 405/262; US-5589124, 19961200, Wooldford et al.; US-D380560, 19970700, Forsberg, D25/113; US-5827015, 19981000, Woolford et al., 405/284; US-5943827, 19990800, Okerlund, 405/286; US-5984589, 19991100, Ciccarello; US-6079908, 20000600, Anderson; US-6082057, 20000700, Sievert; US-6142713, 20001100, Woolford et al., 405/284; US-6168354, 20010100, Martin et al., 405/284; US-6178704, 20010100, Sievert; US-6183168, 20010200, Woolford et al., 405/284; US-6312197, 20011100, Woolford et al., 405/284