IP Library › Granted Patent US 8,277,445
Granted Patent B2
US 8,277,445 · App. 12/719,714 · Granted Oct 2, 2012

Ablation device

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Quick Facts
Patent No.
US 8,277,445
App. No.
12/719,714
Granted
Oct 2, 2012
Kind
B2
Abstract

A method and system for achieving hemostasis (the stoppage of bleeding) is described. RF (radio frequency) energy is used to ablate the surface of tissue to stop bleeding. The depth of destruction of the tissue can be controlled so as to desiccate and coagulate the tissue. In one implementation, an electrode carrier including bipolar electrodes is applied to the tissue, and RF energy transmitted through the bipolar electrodes to ablate the tissue. A layer of desiccated tissue can be created as well as coagulation of the tissue to achieve hemostasis.

Claims (11)

1. An apparatus for substantially achieving tissue ablation, comprising:

a base member comprised of a porous layer;

an electrode carrier attached to a surface of the base member, the electrode carrier including a bipolar electrode that is configured to connect to a source of radio frequency energy;

a vacuum line included within the porous layer of the base member, the vacuum line being configured to connect to a vacuum source and to draw moisture away from the bipolar electrode; and

a controller electrically coupled to the bipolar electrode and configured to control the delivery of radio frequency energy to the bipolar electrode such that tissue in contact with the bipolar electrode can be ablated.

2. The apparatus of claim 1 , wherein the controller is configured to control the delivery of radio frequency energy based on an impedance of the tissue near the electrode carrier.

3. The apparatus of claim 1 further comprising a second bipolar electrode included on the electrode carrier that can be selectively activated by a user.

4. The apparatus of claim 1 , wherein the base member is configured to be positioned within a body cavity.

5. The apparatus of claim 1 , wherein the controller is configured to alter the delivery of radio frequency energy after a threshold impedance is detected.

6. The apparatus of claim 5 , wherein the controller is configured to take into account system impedance.

7. The apparatus of claim 5 , wherein the threshold impedance corresponds to a desired depth of ablation.

Assignments (9)
RELEASE OF SECURITY INTEREST Recorded Apr 28, 2026
From: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
To: HOLOGIC, INC., ON ITS OWN BEHALF AND AS SUCCESSOR-BY-MERGER TO DIRECT RADIOGRAPHY CORP.; CYTYC CORPORATION, ON ITS OWN BEHALF AND AS SUCCESSOR-BY-MERGER TO BIOLUCENT, LLC; CYTYC SURGICAL PRODUCTS, LLC, AS SUCCESSOR-BY-CONVERSION TO CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; GEN-PROBE INCORPORATED, ON ITS OWN BEHALF AND AS SUCCESSOR-BY-MERGER TO THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE PRODESSE, INC.; SUROS SURGICAL SYSTEMS, INC.
Reel/Frame 075566/0039 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT PATENT NO. 8081301 PREVIOUSLY RECORDED AT REEL: 028810 FRAME: 0745. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY AGREEMENT. Recorded Nov 9, 2017
From: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
To: GOLDMAN SACHS BANK USA
Reel/Frame 044432/0565 →
CORRECTIVE ASSIGNMENT TO CORRECT THE INCORRECT PATENT NO. 8081301 PREVIOUSLY RECORDED AT REEL: 035820 FRAME: 0239. ASSIGNOR(S) HEREBY CONFIRMS THE SECURITY INTEREST RELEASE. Recorded Nov 9, 2017
From: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
To: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
Reel/Frame 044727/0529 →
SECURITY AGREEMENT Recorded Aug 7, 2015
From: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; DIRECT RADIOGRAPHY CORP.; GEN-PROBE INCORPORATED; GEN-PROBE PRODESSE, INC.; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.
To: BANK OF AMERICA, N.A., AS COLLATERAL AGENT
Reel/Frame 036307/0199 →
SECURITY INTEREST RELEASE REEL/FRAME 028810/0745 Recorded Jun 4, 2015
From: GOLDMAN SACHS BANK USA, AS COLLATERAL AGENT
To: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
Reel/Frame 035820/0239 →
SECURITY AGREEMENT Recorded Aug 1, 2012
From: HOLOGIC, INC.; BIOLUCENT, LLC; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS, LIMITED PARTNERSHIP; SUROS SURGICAL SYSTEMS, INC.; THIRD WAVE TECHNOLOGIES, INC.; GEN-PROBE INCORPORATED
To: GOLDMAN SACHS BANK USA
Reel/Frame 028810/0745 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2012
From: SAMPSON, RUSSEL M.; SKALNYI, EUGENE V.
To: CYTYC CORPORATION
Reel/Frame 028575/0537 →
TERMINATION OF PATENT SECURITY AGREEMENTS AND RELEASE OF SECURITY INTERESTS Recorded Aug 26, 2010
From: GOLDMAN SACHS CREDIT PARTNERS, L.P., AS COLLATERAL AGENT
To: HOLOGIC, INC.; R2 TECHNOLOGY, INC.; SUROS SURGICAL SYSTEMS, INC.; BIOLUCENT, LLC; DIRECT RADIOGRAPHY CORP.; CYTYC SURGICAL PRODUCTS II LIMITED PARTNERSHIP; CYTYC SURGICAL PRODUCTS LIMITED PARTNERSHIP; CYTYC CORPORATION; CYTYC SURGICAL PRODUCTS III, INC.; CYTYC PRENATAL PRODUCTS CORP.; THIRD WAVE TECHNOLOGIES, INC.
Reel/Frame 024892/0001 →
TWENTY-SECOND SUPPLEMENT TO PATENT SECURITY AGREEMENT Recorded Apr 15, 2010
From: CYTYC CORPORATION
To: GOLDMAN SACHS CREDIT PARTNERS L.P., AS COLLATERAL AGENT
Reel/Frame 024239/0432 →