Locking cap for replaceable needle assembly
First Claim
Patent Images
1. A syringe with replaceable needle assembly, comprising:
- a syringe barrel having a proximal end, a distal end, and an outer surface, said syringe barrel surrounding an internal bore, said bore having an internal diameter;
a plunger assembly, which is inserted into said syringe barrel internal bore; and
a needle assembly having a sealing portion, said sealing portion being configured to be removably insertable into said internal bore, said sealing portion forming a fluid-tight seal with said internal bore, said needle assembly further having a releasable locking mechanism which includes a collar having a locking flange.
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Accused Products
Abstract
A syringe with replaceable needle assembly (10), having a syringe barrel (18) with a proximal end (14), a distal end (16), and an outer surface (87). The syringe barrel (18) surrounds an internal bore (20). A plunger assembly (60) is inserted into the syringe barrel internal bore (20). A needle assembly (80) has a sealing portion (72), which is configured to be removably insertable into the internal bore (20). The sealing portion (72) forms a fluid-tight seal with the internal bore (20). The needle assembly (80) further includes a releasable locking mechanism (79), which includes a collar (76) having a locking flange (86). Also disclosed is a replaceable needle assembly (80), which releasably locks onto the outer surface (87) of the proximal end (14) of a syringe barrel (18). The replaceable needle assembly (80) includes a collar (76), having a locking flange (86), which engages the outer surface (87) of the syringe barrel (18), and releasably locks the replaceable needle assembly (80) onto the syringe barrel (18).
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Citations
20 Claims
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1. A syringe with replaceable needle assembly, comprising:
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a syringe barrel having a proximal end, a distal end, and an outer surface, said syringe barrel surrounding an internal bore, said bore having an internal diameter;
a plunger assembly, which is inserted into said syringe barrel internal bore; and
a needle assembly having a sealing portion, said sealing portion being configured to be removably insertable into said internal bore, said sealing portion forming a fluid-tight seal with said internal bore, said needle assembly further having a releasable locking mechanism which includes a collar having a locking flange. - View Dependent Claims (2, 3, 4, 5, 6)
said collar includes a main portion and said locking flange; and
said locking flange is attached to said main portion by a hinge portion.
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3. A syringe with replaceable needle assembly as in claim 1, wherein:
said locking flange engages said outer surface of said syringe barrel, such that movement of said needle assembly in a proximal direction relative to said syringe barrel is prevented unless said locking flange is disengaged from said outer surface of said barrel.
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4. A syringe with replaceable needle assembly as in claim 3, wherein:
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said locking flange is disengaged by applying force upon said locking flange to urge it in a proximal direction.
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5. A syringe with replaceable needle assembly as in claim 4, wherein:
said locking flange and said main portion are positioned to lie at a flange angle with respect to each other.
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6. A syringe with replaceable needle assembly as in claim 5, wherein:
said flange angle is chosen to lie in the range of 10°
to 20°
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7. A replaceable needle assembly, which locks onto the outer surface of the proximal end of a syringe barrel, comprising:
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a collar, which includes a main portion and a locking flange, said locking flange being connected to said main portion by a hinge portion, said locking flange engaging which engages said outer surface of said syringe barrel, and releasably locks is said replaceable needle assembly onto said syringe barrel. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
said collar includes a main portion and said locking flange; and
said locking flange is attached to said main portion by a hinge portion.
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9. A replaceable needle assembly as in claim 7, wherein:
said locking flange engages said outer surface of said syringe barrel, such that movement of said needle assembly in a proximal direction relative to said syringe barrel is prevented unless said locking flange is disengaged from said outer surface of said barrel.
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10. A replaceable needle assembly as in claim 9, wherein:
said locking flange is disengaged by applying force upon said locking flange to urge it in a proximal direction.
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11. A replaceable needle assembly as in claim 10, wherein:
said locking flange and said main portion are positioned to lie at a flange angle with respect to each other.
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12. A replaceable needle assembly as in claim 11, wherein:
said flange angle is chosen to lie in the range of 10°
to 20°
.
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13. A replaceable needle assembly as in claim 7, wherein:
said locking flange includes teeth which engage said outer surface of said barrel.
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14. A replaceable needle assembly as in claim 7, wherein:
said locking flange includes a releasably sticky adhesive surface which engages said outer surface of said barrel.
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15. A replaceable needle assembly, which locks onto the outer surface of the proximal end of a syringe barrel, comprising:
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a collar including a groove which divides said collar into a main portion and a locking flange which are connected at a hinge portion, so that when said collar is pulled upon, said locking flange pivots in a first pivotal direction about said hinge portion and engages said barrel outer surface thus locking said collar in place. - View Dependent Claims (16, 17, 18, 19, 20)
said locking flange is disengaged by applying force upon said locking flange to urge it to pivot about said hinge portion in a direction counter to said first pivotal direction, thus releasing said locking flange from engagement with said barrel outer surface.
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17. A replaceable needle assembly as in claim 15, wherein:
said locking flange and said main portion are positioned to lie at a flange angle with respect to each other.
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18. A replaceable needle assembly as in claim 17, wherein:
said flange angle is chosen to lie in the range of 10°
to 20°
.
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19. A replaceable needle assembly as in claim 15, wherein:
said locking flange includes teeth which engage said outer surface of said barrel.
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20. A replaceable needle assembly as in claim 15, wherein:
said locking flange includes a releasably sticky adhesive surface which engages said outer surface of said barrel.
Specification
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Current AssigneeMatrix Technologies Corporation
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Original AssigneeRobbins Scientific Corporation
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InventorsWright, David J., Robbins, Paul B., St. Romain, Kenny J.
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Primary Examiner(s)MENDEZ, MANUEL A
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Application NumberUS09/586,246Time in Patent Office671 DaysField of Search604/218, 604/187, 604/110, 604/227, 604/214, 604/264, 604/107, 604/199, 604/221, 604/220, 604/224US Class Current604/218CPC Class CodesB01L 3/0275 Interchangeable or disposab...
