Safety blood collection assembly with indicator

Patent metadata

Field	Value
Publication number	US-10085680-B2
Application number	US-4446908-A
Country	US
Kind code	B2
Filing date	Mar 7, 2008
Priority date	Mar 7, 2007
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A needle assembly is disclosed. The needle assembly includes a housing having a flash chamber, and having a distal end and a proximal end engageable with a specimen collection container. The assembly includes a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior. The patient end of the cannula projects at least partially from the distal end of the housing, and the cannula interior is in fluid communication with the flash chamber. The assembly further includes a shield restrainably engaged with a portion of the housing and axially transitionable over the patient cannula from a retracted position in which the patient end is exposed, to an extended position in which the patient end is shielded by at least a portion of the shield, wherein at least a portion of the flash chamber is visible in the retracted position.

First claim

What is claimed is:

1. A blood collection assembly, comprising:
a housing, comprising a flash chamber, the housing having a distal end and a proximal end engageable with a specimen collection container;
a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior, the patient end of the cannula projecting at least partially from the distal end of the housing, the cannula interior in fluid communication with the flash chamber; and
a shield including an engagement member and at least one depending arm having a locking structure associated therewith, wherein said locking structure comprises at least one inwardly angled restraint, said locking structure disposed at a location distal from the engagement member, said engagement member comprising a fully-surrounded member engaged with a portion of the housing, the shield being transitionable from a first position to a second position with respect to the housing, wherein the flash chamber includes a top surface which is free from obstructions on the flash chamber and is visible when the shield is in the first position, and wherein in the second position, the shield is disposed over the patient end of the cannula and the locking structure engages at least one ledge located solely at a distal end of the flash chamber at a location that is distal to the engagement member engaged with a portion of the housing to lock the shield in the second position, wherein the flash chamber includes the at least one ledge configured for cooperating with the locking structure to lock the shield in the second position, wherein the at least one ledge is located at a bottom side of the flash chamber so as to leave the top side of the flash chamber free from any ledges.

2. The blood collection assembly of claim 1 , wherein the at least one inwardly angled restraint extends in an upward direction from a bottom portion of the at least one depending arm and extends in an upward direction with respect to the blood collection assembly when the shield is in the second position.

3. A blood collection assembly, comprising:
a housing, comprising a flash chamber, the housing having a distal end and a proximal end engageable with a specimen collection container;
a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior, the patient end of the cannula projecting at least partially from the distal end of the housing, the cannula interior in fluid communication with the flash chamber; and a shield including an engagement member and at least one depending arm having a locking structure associated therewith, wherein said locking structure comprises at least one inwardly angled restraint, said locking structure disposed at a location distal from the engagement member, said engagement member comprising a fully-surrounded member engaged with a portion of the housing, the shield being transitionable from a first position to a second position with respect to the housing, wherein the flash chamber includes a top surface which is free from obstructions on the flash chamber and is visible when the shield is in the first position, and wherein in the second position, the shield is disposed over the patient end of the cannula and the locking structure engages at least one ledge located solely at a distal end of the flash chamber at a location that is distal to the engagement member engaged with a portion of the housing to lock the shield in the second position, wherein the fully-surrounded member is surrounded by at least two separate portions of the housing, wherein a first portion of the housing is c-shaped and a second portion of the housing includes a protrusion configured to engage the first portion, wherein the member is surrounded by the first and second portions of the housing, and wherein the protrusion configured to engage the first portion includes a tab member extending therefrom configured to engage the fully-surrounded member to hold the fully-surrounded member in the first portion of the housing.

4. A blood collection assembly, comprising:
a housing, comprising a flash chamber, the housing having a distal end and a proximal end engageable with a specimen collection container;
a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior, the patient end of the cannula projecting at least partially from the distal end of the housing, the cannula interior in fluid communication with the flash chamber; and
a shield including an engagement member and at least one depending arm having a locking structure associated therewith, wherein said locking structure comprises at least one inwardly angled restraint, said locking structure disposed at a location distal from the engagement member, said engagement member comprising a fully-surrounded member engaged with a portion of the housing, the shield being transitionable from a first position to a second position with respect to the housing, wherein the flash chamber includes a top surface which is free from obstructions on the flash chamber and is visible when the shield is in the first position, and wherein in the second position, the shield is disposed over the patient end of the cannula and the locking structure engages at least one ledge located solely at a distal end of the flash chamber at a location that is distal to the engagement member engaged with a portion of the housing to lock the shield in the second position, wherein the locking structure engages the flash chamber at a bottom side of the blood collection assembly.

Assignees

• Crawford Jamieson
• Ellis Robert
• Wilkinson Bradley M
• Bartfeld Benjamin
• Newby C Mark
• Tan Chee Leong Alvin
• Moh Jon
• Sim Stanley
• Chia Neville Yu Leng
• Becton Dickinson Co

Inventors

• Crawford Jamieson
• Ellis Robert
• Wilkinson Bradley M
• Bartfeld Benjamin
• Newby C Mark
• Tan Chee Leong Alvin
• Moh Jon
• Sim Stanley
• Chia Neville Yu Leng

Classifications

• A61B17/34

  Trocars; Puncturing needles · CPC title

• A61B5/15003 Primary

  for venous or arterial blood · CPC title

• A61B5/1422

  provided with indicating means, e.g. for vein entry · CPC title

• A61B5/154 Primary

  {Devices} using pre-evacuated means · CPC title

• A61B5/1444

  Safety means, e.g. for locking cannula (removing or disposing of used needles or syringes A61M5/3205) · CPC title