Patents Assigned to Sub-Q, Inc.
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Publication number: 20030088269Abstract: A system for delivering hemostasis promoting material of the present invention allows the hemostasis promoting material to be delivered to a blood vessel puncture site by fluid pressure. The system allows the hemostasis promoting material to be delivered through an introducer sheath which is already in place within a tissue tract. This system includes a controlled tip which is insertable through the introducer sheath to locate and occlude the blood vessel puncture site and a hydration chamber for receiving and delivering the hemostasis promoting material to the blood vessel puncture site. The system accurately locates the blood vessel wall at a puncture site and for properly placing a hemostasis plug over the puncture site.Type: ApplicationFiled: November 8, 2001Publication date: May 8, 2003Applicant: Sub-Q, Inc.Inventor: Mark Ashby
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Patent number: 6540735Abstract: A system for facilitating hemostasis of a puncture site in a blood vessel delivers an absorbable sponge pledget in a hydrated state to a position at an exterior of the blood vessel puncture to facilitate hemostasis. The system includes a staging chamber, a delivery cannula, and a pusher. The staging chamber is used for hydrating a pledget of absorbable sponge, compressing the pledget, and delivering the pledget to the delivery cannula. The staging chamber may include a valve for facilitating hydration and staging of the pledget. The delivery cannula and pusher are used to accurately place the sponge pledget outside the blood vessel. An easy loader connector may be used to facilitate loading the dry pledget into the staging chamber.Type: GrantFiled: May 12, 2000Date of Patent: April 1, 2003Assignee: Sub-Q, Inc.Inventors: Mark Ashby, Luis R. Urquidi, Eric Lee
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Patent number: 6527734Abstract: A system for facilitating hemostasis of a puncture site in a blood vessel injects an absorbable sponge pledget in a hydrated state to a position at an exterior of the blood vessel puncture to facilitate hemostasis. The system includes a tract dilator for locating the puncture, an introducer, and a pusher. The introducer includes a staging chamber for receiving the absorbent sponge pledget and a delivery chamber having a diameter smaller than a diameter of the staging chamber into which a hydrated pledget passes. The pledget is hydrated and compressed within the introducer and then ejected with the pusher to the delivery site to facilitate hemostasis of the blood vessel puncture. The system delivers the absorbable sponge pledget over a guidewire to ensure the proper positioning of the pledget over the puncture. The implanted absorbable sponge once delivered expands rapidly to fill the target site and is absorbed by the body over time.Type: GrantFiled: August 7, 2001Date of Patent: March 4, 2003Assignee: Sub-Q, Inc.Inventors: Andrew M. Cragg, Rodney Brenneman, Mark Ashby, Eduardo Chi Sing
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Patent number: 6447534Abstract: A system including an adaptor and a syringe is used for facilitating hemostasis of a biopsy tract or other puncture wound by delivery of an absorbable sponge in a hydrated state into the wound. The adaptor includes a tapered lumen for hydrating and compressing the relatively large absorbable sponge for delivery through a relatively small cannula, such as a biopsy needle. The hydrated absorbable sponge is injected through the biopsy needle into the biopsy tract by fluid. Alternatively, the sponge may be delivered to the biopsy needle by injection of fluid and then delivered to the biopsy tract by a plunger or stylet. The system may also include a trail staging chamber for inspecting a condition of the sponge before delivery. The implanted absorbable sponge facilitates hemostasis at the biopsy site or other puncture wound and minimizes the chance of internal bleeding. The absorbable sponge material is absorbed by the body over time.Type: GrantFiled: March 13, 2001Date of Patent: September 10, 2002Assignee: Sub-Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman, Mark Ashby
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Patent number: 6440151Abstract: A system including an adaptor and a syringe is used for facilitating hemostasis of a biopsy tract or other puncture wound by injection of an absorbable sponge in a hydrated state into the wound. The adaptor includes a tapered lumen for hydrating and compressing the relatively large absorbable sponge for delivery through a relatively small cannula, such as a biopsy needle. The hydrated absorbable sponge is injected through the biopsy needle into the biopsy tract by fluid. The implanted absorbable sponge facilitates hemostasis at the biopsy site or other puncture wound and minimizes the chance of internal bleeding. The absorbable sponge material is absorbed by the body over time.Type: GrantFiled: June 6, 2000Date of Patent: August 27, 2002Assignee: Sub-Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman, Mark Ashby
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Patent number: 6440153Abstract: A system including an adaptor and a syringe is used for facilitating hemostasis of a biopsy tract or other puncture wound by delivery of an absorbable sponge in a hydrated state into the wound. The adaptor includes a tapered lumen for hydrating and compressing the relatively large absorbable sponge for delivery through a relatively small cannula, such as a biopsy needle. The hydrated absorbable sponge is injected through the biopsy needle into the biopsy tract by fluid. Alternatively, the sponge may be delivered to the biopsy needle by injection of fluid and then delivered to the biopsy tract by a plunger or stylet. The implanted absorbable sponge facilitates hemostasis at the biopsy site or other puncture wound and minimizes the chance of internal bleeding. The absorbable sponge material is absorbed by the body over time.Type: GrantFiled: September 14, 2001Date of Patent: August 27, 2002Assignee: Sub-Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman, Mark Ashby
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Patent number: 6371974Abstract: A device for promoting hemostasis in a blood vessel puncture is employed with an introducer that accesses the puncture through an incision. The introducer has an open distal end positionable at the puncture, an external portion with an open proximal end, and an axial channel therebetween. The device includes a hollow catheter, dimensioned to pass through the introducer channel, having a distal end to which is attached an expansible compression element, which may be an inflatable balloon, a collapsible prong assembly, or a resilient foam pad. The compression element is collapsed when the distal end of the catheter is enclosed within the introducer. When the catheter and the introducer are located the desired distance from the puncture, the introducer is displaced axially relative to the catheter to expose the compression element to the subcutaneous tissue, whereupon the compression element is expanded.Type: GrantFiled: August 2, 1999Date of Patent: April 16, 2002Assignee: Sub Q, Inc.Inventors: Rodney Brenneman, Andrew H. Cragg
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Patent number: 6315753Abstract: A method of superhydrating an absorbable sponge for delivery to a body to facilitate hemostasis includes the step of subjecting the absorbable sponge to a high pressure fluid to hydrate the absorbable sponge. According to one method, a dry piece of absorbable sponge is placed in a delivery device. The absorbable sponge is then subjected to a high pressure fluid by injecting fluid into the delivery device to rapidly and completely hydrate the absorbable sponge in the delivery device. The high pressure fluid used for rapidly and completely hydrating the absorbable sponge is delivered at a pressure of about 5 psi or greater. The hydrated absorbable sponge may be delivered to a puncture site in a blood vessel to facilitate hemostasis of the puncture site.Type: GrantFiled: March 5, 1999Date of Patent: November 13, 2001Assignee: Sub-Q, Inc.Inventors: Andrew M. Cragg, Rodney Brenneman, Mark Ashby, Eduardo Chi Sing
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Patent number: 6183497Abstract: An absorbable sponge containing a contrasting agent (e.g, radiopaque agent) that can be introduced to a biopsy tract or other puncture wound site is provided. The contrasting agent permits identification of the site by fluoroscopy or other imaging techniques.Type: GrantFiled: June 17, 1999Date of Patent: February 6, 2001Assignee: Sub-Q, Inc.Inventors: Eduardo Chi Sing, Mark Ashby
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Patent number: 6162192Abstract: A system for facilitating hemostasis of a puncture site in a blood vessel injects an absorbable sponge pledget in a hydrated state at an exterior of the blood vessel puncture to facilitate hemostasis. The system includes a tract dilator for locating the puncture, an introducer, and a plunger. The introducer includes a staging chamber for receiving the absorbent sponge pledget and a delivery chamber having a diameter smaller than a diameter of the staging chamber into which a hydrated pledget passes. The pledget is hydrated and compressed within the introducer and then ejected with the plunger to the delivery site to facilitate hemostasis of the blood vessel puncture. The system delivers the absorbable sponge pledget over a guidewire to ensure the proper positioning of the pledget over the puncture. The implanted absorbable sponge once delivered expands rapidly to fill the target site and is absorbed by the body over time.Type: GrantFiled: May 1, 1998Date of Patent: December 19, 2000Assignee: Sub Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman, Mark Ashby
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Patent number: 6086607Abstract: A system including an adaptor and a syringe is used for facilitating hemostasis of a biopsy tract or other puncture wound by delivery of an absorbable sponge in a hydrated state into the wound. The adaptor includes a tapered lumen for hydrating and compressing the relatively large absorbable sponge for delivery through a relatively small cannula, such as a biopsy needle. The hydrated absorbable sponge is injected through the biopsy needle into the biopsy tract by fluid. Alternatively, the sponge may be delivered to the biopsy needle by injection of fluid and then delivered to the biopsy tract by a plunger or stylet. The implanted absorbable sponge facilitates hemostasis at the biopsy site or other puncture wound and minimizes the chance of internal bleeding. The absorbable sponge material is absorbed by the body over time.Type: GrantFiled: February 10, 1999Date of Patent: July 11, 2000Assignee: Sub-Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman, Mark Ashby
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Patent number: 6071301Abstract: A system including an adaptor and a syringe is used for facilitating hemostasis of a biopsy tract or other puncture wound by injection of an absorbable sponge in a hydrated state into the wound. The adaptor includes a tapered lumen for hydrating and compressing the relatively large absorbable sponge for delivery through a relatively small cannula, such as a biopsy needle. The hydrated absorbable sponge is injected through the biopsy needle into the biopsy tract by fluid. The implanted absorbable sponge facilitates hemostasis at the biopsy site or other puncture wound and minimizes the chance of internal bleeding. The absorbable sponge material is absorbed by the body over time.Type: GrantFiled: May 1, 1998Date of Patent: June 6, 2000Assignee: SUB Q., Inc.Inventors: Andrew H. Cragg, Rodney Brenneman, Mark Ashby
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Patent number: 6071300Abstract: A device for promoting hemostasis in a blood vessel puncture is employed with an introducer that accesses the puncture through an incision. The introducer has an open distal end positionable at the puncture, an external portion with an open proximal end, and an axial channel therebetween. The device includes a hollow catheter, dimensioned to pass through the introducer channel, having a distal end to which is attached an expansible compression element, which may be an inflatable balloon, a collapsible prong assembly, or a resilient foam pad. The compression element is collapsed when the distal end of the catheter is enclosed within the introducer. When the catheter and the introducer are located the desired distance from the puncture, the introducer is displaced axially relative to the catheter to expose the compression element to the subcutaneous tissue, whereupon the compression element is expanded.Type: GrantFiled: July 7, 1997Date of Patent: June 6, 2000Assignee: Sub-Q Inc.Inventors: Rodney Brenneman, Andrew H. Cragg
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Patent number: 5984950Abstract: A vascular hemostasis device comprises a shaft coaially received within a hollow tube, and having a distal end formed with an opposed pair of resilient grasping prongs. The tube has an open distal end that may be situated percutaneously adjacent a vascular puncture site. The shaft and the tube are axially movable with respect to one another, so that the distal end of the shaft may be selectively extended from and partially retracted into the distal end of the tube by means of an actuation member attached to the shaft. When the distal shaft end is in its extended position, the prongs are exposed from the distal end of the tube, and they resiliently expand to an open position. When the distal shaft end is moved to its retracted position, the prongs are partially retracted into the distal end of the tube, radially contracting them to a closed position. In contracting, the prongs grasp and gather tissue adjacent the puncture site to obstruct bleeding therefrom.Type: GrantFiled: July 20, 1998Date of Patent: November 16, 1999Assignee: Sub-Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman
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Patent number: 5868762Abstract: A device for suturing a vascular puncture site includes a shaft having a distal end terminating in a pair of resilient prongs, each of which releasably carries a suture anchor attached to one end of a suture. The shaft is installed within a hollow tube for longitudinal translation therein between first and second positions. The tube has a distal end portion and an opening spaced proximally therefrom. When the shaft is in its first position, the prongs are radially closed in the distal end portion. When the shaft is in its second position, the prongs expand radially to an open position through the opening. The proximal end of the shaft is connected to an actuation member in a fitting that is removably connectable to the proximal end of a sheath. The distal end of the tube is introduced into the puncture site through the sheath, with the shaft in its first position. The sheath is partially withdrawn, leaving the distal end of the tube inside the vessel.Type: GrantFiled: September 25, 1997Date of Patent: February 9, 1999Assignee: Sub-Q, Inc.Inventors: Andrew H. Cragg, Rodney Brenneman
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Patent number: 5782861Abstract: A vascular hemostasis device comprises a shaft coaxially received within a hollow tube, and having a distal end formed with an opposed pair of resilient grasping prongs. The tube has an open distal end that may be situated percutaneously adjacent a vascular puncture site. The shaft and the tube are axially movable with respect to one another, so that the distal end of the shaft may be selectively extended from and partially retracted into the distal end of the tube by means of an actuation member attached to the shaft. When the distal shaft end is in its extended position, the prongs are exposed from the distal end of the tube, and they resiliently expand to an open position. When the distal shaft end is moved to its retracted position, the prongs are partially retracted into the distal end of the tube, radially contracting them to a closed position. In contracting, the prongs grasp and gather tissue adjacent the puncture site to obstruct bleeding therefrom.Type: GrantFiled: December 23, 1996Date of Patent: July 21, 1998Assignee: Sub Q Inc.Inventors: Andrew H. Cragg, Rodney Brenneman
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Patent number: 5645566Abstract: A device for promoting hemostasis in a blood vessel puncture is employed with an introducer that accesses the puncture through an incision. The introducer has an open distal end positionable at the puncture, an external portion with an open proximal end, and an axial channel therebetween. The device includes a hollow catheter, dimensioned to pass through the introducer channel, having a distal end to which is attached an expansible compression element, which may be an inflatable balloon, a collapsible prong assembly, or a resilient foam pad. The compression element is collapsed when the distal end of the catheter is enclosed within the introducer. When the catheter and the introducer are located the desired distance from the puncture, the introducer is displaced axially relative to the catheter to expose the compression element to the subcutaneous tissue, whereupon the compression element is expanded.Type: GrantFiled: September 15, 1995Date of Patent: July 8, 1997Assignee: Sub Q Inc.Inventors: Rodney Brenneman, Andrew H. Cragg