Patents by Inventor Alvin Chee Leong Tan
Alvin Chee Leong Tan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9167996Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet and outlet end, a flashback chamber, and a venting mechanism therebetween. The venting mechanism includes a blocking member to control the fluid flow in the venting mechanism so that it flows along the longest path through the vent. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber, and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent positioned within the housing to divide the interior into first and second chambers, with the second chamber being adapted to maintain a negative pressure therein relative to the external environment so as to inhibit leakage of blood from the needle tip on withdrawal from the patient.Type: GrantFiled: October 25, 2013Date of Patent: October 27, 2015Assignee: Becton, Dickinson and CompanyInventors: Alvin Chee Leong Tan, Tiong Yee Sim, Jon Yaohan Moh, William G. Saulenas, Robert G. Ellis, James C. Schneider, Steven Mark White
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Patent number: 9095288Abstract: 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.Type: GrantFiled: March 17, 2011Date of Patent: August 4, 2015Assignee: Becton, Dickinson and CompanyInventors: Jamieson W. Crawford, Bradley M. Wilkinson, Alvin Chee Leong Tan, Tiong Yee Sim, C. Mark Newby, Jon Yaohan Moh, Robert G. Ellis, Neville Yu Leng Chia, Benjamin R. Bartfeld
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Patent number: 8708964Abstract: A needle assembly is provided with the housing, and IV cannula for accessing a blood vessel and a non-patient cannula for communication with an evacuated tube. A flashback chamber is provided in the housing at or near the distal end of the housing. A shield is hinged to a portion of the assembly proximally of the entrance to the flashback chamber. As a result, good visibility of the flashback chamber is achieved. After use, the shield can be rotated into a closed portion for surrounding the IV cannula and avoiding accidental needle sticks.Type: GrantFiled: February 1, 2011Date of Patent: April 29, 2014Assignee: BD Medical Products, PTE. Ltd.Inventors: Alvin Chee Leong Tan, Jon Yaohan Moh
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Publication number: 20140052022Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet and outlet end, a flashback chamber, and a venting mechanism therebetween. The venting mechanism includes a blocking member to control the fluid flow in the venting mechanism so that it flows along the longest path through the vent. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber, and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent positioned within the housing to divide the interior into first and second chambers, with the second chamber being adapted to maintain a negative pressure therein relative to the external environment so as to inhibit leakage of blood from the needle tip on withdrawal from the patient.Type: ApplicationFiled: October 25, 2013Publication date: February 20, 2014Applicant: Becton, Dickinson and CompanyInventors: Alvin Chee Leong Tan, Tiong Yee Sim, Jon Yaohan Moh, William G. Saulenas, Robert G. Ellis, James C. Schneider, Steven Mark White
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Patent number: 8603009Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet and outlet end, a flashback chamber, and a venting mechanism therebetween. The venting mechanism includes a blocking member to control the fluid flow in the venting mechanism so that it flows along the longest path through the vent. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber, and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent positioned within the housing to divide the interior into first and second chambers, with the second chamber being adapted to maintain a negative pressure therein relative to the external environment so as to inhibit leakage of blood from the needle tip on withdrawal from the patient.Type: GrantFiled: February 1, 2011Date of Patent: December 10, 2013Assignee: Becton, Dickinson and CompanyInventors: Alvin Chee Leong Tan, Tiong Yee Sim, Jon Yaohan Moh, William G. Saulenas, Robert G. Ellis, James C. Schneider, Steven Mark White
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Publication number: 20110178427Abstract: A needle assembly includes a transparent or translucent housing with a fluid inlet and outlet end, a flashback chamber, and a venting mechanism therebetween. The venting mechanism includes a blocking member to control the fluid flow in the venting mechanism so that it flows along the longest path through the vent. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber, and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent positioned within the housing to divide the interior into first and second chambers, with the second chamber being adapted to maintain a negative pressure therein relative to the external environment so as to inhibit leakage of blood from the needle tip on withdrawal from the patient.Type: ApplicationFiled: February 1, 2011Publication date: July 21, 2011Applicant: BECTON, DICKINSON AND COMPANYInventors: Alvin Chee Leong Tan, Tiong Yee Sim, Jon Yaohan Moh, William G. Saulenas, Robert G. Ellis, James C. Schneider, Steven Mark White