Patent US4754391A successfully refreshed from Google Patents.
Patent US5984950A successfully refreshed from Google Patents.
US5984950A
Expired / Lapsed
US
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Percutaneous hemostasis device
Assignee: Boston Scientific Scimed Inc
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Filing: 1998-07-20
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Granted: 1999-11-16
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Expires: 2018-07-20
Abstract
Abstract 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. In a first embodiment, the prongs are on a distal end portion, of resorbable material, that is detachable from the body of the shaft. The tube is a sleeve through which the shaft is slidably disposed, the sleeve being axially received within a trocar that is installed percutaneously to the puncture site. A second preferred embodiment includes a unitary shaft with the prongs at the distal end. The tube in which the shaft is axially disposed is the trocar itself.
Inventors
- 👤 Andrew H. Cragg
- 👤 Rodney Brenneman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:54
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/0057; A61B2017/00637
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
100 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, the method comprising the steps of: providing percutaneous access to the site through a cannula; providing an elongate shaft having a distal end portion terminating in at least one opposed pair of resilient prongs; inserting the elongate shaft into the cannula over a guidewire; grasping tissue with the resilient prongs; gathering the grasped tissue together with the resilient prongs to substantially inhibit flow of blood from the site; and delivering an agent to the site to further inhibit the flow of blood from the site.
Claim 2
Independent Claim
100 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, the method comprising the steps of: providing percutaneous access to the site through a cannula; providing an elongate shaft having a distal end portion terminating in at least one opposed pair of resilient prongs; inserting the elongate shaft into the cannula over a guidewire; grasping tissue with the resilient prongs; gathering the grasped tissue together with the resilient prongs to substantially inhibit flow of blood from the site; and delivering an agent to the site to further inhibit the flow of blood from the site.
Claim 3
Dependent Claim
13 words
The method of claim 1, wherein the agent is a hemostasis promoting agent.
Claim 4
Dependent Claim
12 words
The method of claim 1, wherein the agent is a tissue adhesive.
Claim 5
Dependent Claim
12 words
The method of claim 1, wherein the agent is a coagulation accelerant.
Claim 6
Dependent Claim
31 words
The method of claim 1, wherein the step of delivering the agent includes withdrawing the guidewire from the elongate shaft and injecting the agent through a lumen of the elongate shaft.
Claim 7
Dependent Claim
22 words
The method of claim 1, wherein the step of delivering the agent includes injecting the agent through a lumen of the cannula.
Claim 8
Independent Claim
106 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, the method comprising the steps of: providing percutaneous access to the site through a cannula; providing an elongate shaft having a distal end portion terminating in at least one opposed pair of resilient prongs; inserting the elongate shaft into the cannula; grasping tissue with the resilient prongs; gathering the grasped tissue together with the resilient prongs to substantially inhibit flow of blood from the site; delivering an agent to the site to further inhibit the flow of blood from the site; and injecting a contrasting dye to the site for visualization.
Claim 9
Independent Claim
106 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, the method comprising the steps of: providing percutaneous access to the site through a cannula; providing an elongate shaft having a distal end portion terminating in at least one opposed pair of resilient prongs; inserting the elongate shaft into the cannula; grasping tissue with the resilient prongs; gathering the grasped tissue together with the resilient prongs to substantially inhibit flow of blood from the site; delivering an agent to the site to further inhibit the flow of blood from the site; and injecting a contrasting dye to the site for visualization.
Claim 10
Independent Claim
101 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, the method comprising the steps of: providing percutaneous access to the site through a cannula; providing an elongate shaft having a distal end portion terminating in at least one opposed pair of resilient prongs; inserting the elongate shaft through the cannula; grasping tissue with the resilient prongs; gathering the grasped tissue together with the resilient prongs to substantially inhibit flow of blood from the site; inserting an optical fiber to the site; and delivering light energy through the optical fiber to promote hemostasis at the site.
Claim 11
Independent Claim
101 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, the method comprising the steps of: providing percutaneous access to the site through a cannula; providing an elongate shaft having a distal end portion terminating in at least one opposed pair of resilient prongs; inserting the elongate shaft through the cannula; grasping tissue with the resilient prongs; gathering the grasped tissue together with the resilient prongs to substantially inhibit flow of blood from the site; inserting an optical fiber to the site; and delivering light energy through the optical fiber to promote hemostasis at the site.
Claim 12
Dependent Claim
38 words
The method of claim 8, wherein the elongated shaft is inserted over a guidewire and further comprising a step of withdrawing the guidewire from the elongate shaft and inserting the optical fiber through a lumen of the shaft.
Claim 13
Dependent Claim
23 words
The method of claim 8, wherein the optical fiber is inserted to the site through the cannula along one side of the shaft.
Claim 14
Dependent Claim
17 words
The method of claim 8, wherein the light energy delivered to the site is laser light energy.
Claim 15
Dependent Claim
182 words
A percutaneous vascular hemostasis device comprising: an elongate hollow tube having an open distal end; an elongate shaft disposed coaxially within the tube and having a proximal end portion and a distal end portion, the distal end portion terminating in at least one opposed pair of resilient prongs, whereby the shaft and the tube are axially movable with respect to one another so that the distal end portion of the shaft may be selectively extended from and partially retracted into the distal end of the tube, and the elongate shaft is formed of a conductive material; an actuation member attached to the proximal end portion of the shaft for moving the prongs from a grasping position in which the prongs are spaced from one another to grasp tissue to a retracted position in which the grasped tissue is gathered together, the actuation member moving the prongs radially with respect to the elongated shaft from the grasping position to the retracted position; and an electrocautery generator connected to the elongate shaft for delivery of coagulation energy to the distal end of the shaft.
Claim 16
Dependent Claim
182 words
A percutaneous vascular hemostasis device comprising: an elongate hollow tube having an open distal end; an elongate shaft disposed coaxially within the tube and having a proximal end portion and a distal end portion, the distal end portion terminating in at least one opposed pair of resilient prongs, whereby the shaft and the tube are axially movable with respect to one another so that the distal end portion of the shaft may be selectively extended from and partially retracted into the distal end of the tube, and the elongate shaft is formed of a conductive material; an actuation member attached to the proximal end portion of the shaft for moving the prongs from a grasping position in which the prongs are spaced from one another to grasp tissue to a retracted position in which the grasped tissue is gathered together, the actuation member moving the prongs radially with respect to the elongated shaft from the grasping position to the retracted position; and an electrocautery generator connected to the elongate shaft for delivery of coagulation energy to the distal end of the shaft.
Claim 17
Dependent Claim
33 words
The percutaneous vascular hemostasis device according to claim 12, wherein the conductive shaft is coated with an insulating material so that only the distal end of the shaft delivers coagulation energy to tissue.
Claim 18
Dependent Claim
19 words
The percutaneous vascular hemostasis device according to claim 12, wherein each of the resilient prongs have an inwardly-turned end.
Claim 19
Independent Claim
222 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, comprising the steps of: providing percutaneous access to the site through a surgical trocar, the trocar having open distal and proximal ends, the distal end being disposed within the lumen through the site; providing an elongated shaft having a proximal end portion and a distal end portion, the distal end portion terminating in at least one opposed pair of resilient prongs, each of the prongs having an inwardly-turned end; installing the shaft axially into the trocar so that the prongs reside within the trocar near the distal end of the trocar; withdrawing the trocar and the shaft together a sufficient distance to place the distal end of the trocar external to the lumen and adjacent to the site; withdrawing the trocar proximally with respect to the shaft a sufficient distance to expose the prongs, whereby the prongs expand radially to an open position external to the lumen; and moving the trocar distally with respect to the shaft so as to retract the prongs partially into the distal end of the trocar, whereby the prongs are radially contracted to a closed position so as to grasp and gather together tissue adjacent the site external to the lumen, whereby the flow of blood from the site is substantially inhibited.
Claim 20
Independent Claim
222 words
A method of promoting hemostasis at a perforation or puncture site in a subcutaneous lumen, comprising the steps of: providing percutaneous access to the site through a surgical trocar, the trocar having open distal and proximal ends, the distal end being disposed within the lumen through the site; providing an elongated shaft having a proximal end portion and a distal end portion, the distal end portion terminating in at least one opposed pair of resilient prongs, each of the prongs having an inwardly-turned end; installing the shaft axially into the trocar so that the prongs reside within the trocar near the distal end of the trocar; withdrawing the trocar and the shaft together a sufficient distance to place the distal end of the trocar external to the lumen and adjacent to the site; withdrawing the trocar proximally with respect to the shaft a sufficient distance to expose the prongs, whereby the prongs expand radially to an open position external to the lumen; and moving the trocar distally with respect to the shaft so as to retract the prongs partially into the distal end of the trocar, whereby the prongs are radially contracted to a closed position so as to grasp and gather together tissue adjacent the site external to the lumen, whereby the flow of blood from the site is substantially inhibited.
Claim 21
Independent Claim
21 words
The method of claims 15, further comprising the step of: when hemostasis has been achieved, withdrawing the shaft from the trocar.
Claim 22
Dependent Claim
51 words
The method of claim 16, wherein the step of withdrawing the shaft from the trocar comprises the steps of: moving the trocar proximally with respect to the shaft so as to expose the prongs, whereby the prongs expand radially to their grasping position; and pulling the shaft proximally through the trocar.
Claim 23
Dependent Claim
73 words
The method of claim 15, wherein the distal end portion of the shaft is detachable and formed of a bioresorbable material, and wherein the method further comprises the steps of: detaching the distal end portion of the shaft while the prongs are in their retracted position and grasping the tissue; and withdrawing the shaft from the trocar while leaving the detachable distal end portion in place adjacent the site until it is resorbed.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-15 | 2003-05-17 | 2003-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-15 | 2007-05-17 | 2007-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-15 | 2011-05-17 | 2011-11-16 | $7700.00 | Window Closed / Lapsed |