LARS U WAHLBERG
Physician at Chapman St, Providence, RI
License number
Rhode Island MD14141
Issued Date
Jan 2, 2013
Expiration Date
Jun 30, 2018
Category
Physician
Type
Allopathic Physician (MD)
Address
Address
225 Chapman St, Providence, RI 02905
Phone
(401) 489-4765 (Work)
(401) 432-7576 (Fax)
(401) 432-7576 (Fax)
Professional information
Lars U Wahlberg, Providence RI
Specialties:
Neurosurgery
Address:
225 Chapman St, Providence 02905
(401) 432-7576 (Fax)
(401) 432-7576 (Fax)
Languages:
English
Education:
Medical School
University of Texas Medical School At San Antonio
Graduated: 1985
University of Texas Medical School At San Antonio
Graduated: 1985
Method Of Preparing Elongated Seamless Capsules Containing Biological Material
US Patent:
5418154, May 23, 1995
Filed:
Dec 24, 1992
Appl. No.:
7/997770
Inventors:
Patrick Aebischer - Barrington RI
John F. Mills - Wakefield RI
Lars Wahlberg - Providence RI
Edward J. Doherty - Mansfield MA
Patrick A. Tresco - Salt Lake City UT
John F. Mills - Wakefield RI
Lars Wahlberg - Providence RI
Edward J. Doherty - Mansfield MA
Patrick A. Tresco - Salt Lake City UT
Assignee:
Brown University Research Foundation - Providence RI
International Classification:
C12N 1104, C12N 500, B01J 1302, A61K 948
US Classification:
435182
Abstract:
Elongated seamless capsules containing biological material are prepared by a method in which a coagulant, which includes a cell suspension or other biologically active factor, and a polymeric casting solution are extruded through a common extrusion port having at least two concentric bores, such that the coagulant is extruded through the inner bore and the polymeric casting solution is extruded through the outer bore. The method involves initiating extrusion of the coagulant subsequent to initiating delivery of the casting solution through the respective bores to form a capsule having a curved and smooth leading edge shape. Delivery of the coagulant is then shut off, and extrusion of the casting solution is terminated either immediately or after some predetermined time.
Preparation Of Elongated Seamless Capsules Containing A Coaxial Rod And Biological Material
US Patent:
5643773, Jul 1, 1997
Filed:
Apr 27, 1995
Appl. No.:
8/430786
Inventors:
Patrick Aebischer - Barrington RI
John F. Mills - Wakefield RI
Lars Wahlberg - Providence RI
Edward J. Doherty - Mansfield MA
Patrick A. Tresco - Salt Lake City UT
John F. Mills - Wakefield RI
Lars Wahlberg - Providence RI
Edward J. Doherty - Mansfield MA
Patrick A. Tresco - Salt Lake City UT
Assignee:
Brown University Research Foundation - Providence RI
International Classification:
C12N 1104, C12N 500, B01J 1302, A61K 948
US Classification:
435182
Abstract:
Elongated seamless capsules containing biological material are prepared by a method in which a coagulant, which includes a cell suspension or other biological material, and a polymeric casting solution are extruded through a common extrusion port having at least two concentric bores, such that the coagulant is extruded through an inner bore and the polymeric casting solution is extruded through an outer bore. Extrusion of the coagulant is initiated subsequent to initiating delivery of the casting solution to form a capsule having a curved and smooth leading edge shape. Delivery of the coagulant is then shut off, and extrusion of the casting solution is terminated either immediately or after some predetermined time. This procedure can be modified to form in the capsule a coaxial rod that is connected to one end but not the other end of the capsule. This is accomplished by drawing casting solution into the inner bore after initiating extrusion of the casting solution through the outer bore, and then initiating delivery of the coagulant through the inner bore so as to coagulate the casting solution therein and form a rod, and ejecting the rod from the inner bore by pressure of the coagulant.