Avent, Inc.

O&m Halyard, Inc.

Ruoya Wang

Kun-Chi Wu

Jennifer J Barrett

Ken Driver

Khoa Tuan Lien

Tyler West Crone

Gavin H Mannion

Brett C Leard

Ryan D Smith

Joseph DiPietro

Craig F Steinman

Rasagnya M Viswanadha

Michael D Brown

Edward B Madsen

Travis W Klyber

Tracy J White

Mark R Ellswood

Claire B Couch

Collin Widger

Vernon Meadows

Nathan Christopher Griffith

Anthony Stephen Spencer

Scott M Teixeira

Steven Vordenberg

Scott Woodruff

Justin Jeffrey Coker

Preston A Moeller

Anne E Cote

Rasagnya M Viswandha

Ryan Smith

Timothy J Habegger

Samir Merchant

Collin Wedger

Jennfer J Barrett

Joseph Dipietro

Methods for detecting tubing in a pump assembly of a pump system are provided. For example, a method comprises connecting a power supply to each of a plurality of pump motors of the pump system. Each pump motor of the plurality of pump motors has a power supply cable configured to connect to the power supply and drives a pump head of a plurality of pump heads of the pump system. The method also comprises sensing a motor current from each of the power supply cables, determining whether tubing is loaded in each pump head, and, if tubing is not loaded in a pump head, then disconnecting from the power supply the power supply cable of the pump motor associated with the pump head in which tubing is not loaded. Systems for detecting the presence of tubing within a pump head of a plurality of pump heads also are provided.

Method for detecting presence of tubing in pump assembly

A method of treating tissue of a patient's body includes providing a power source coupled to at least one probe assembly. The probe assembly includes an elongate member with a distal region and a proximal region. The distal region has an electrically and thermally-conductive energy delivery device for delivering one of electrical and radiofrequency energy to the patient's body. The electrically and thermally-conductive energy delivery device has one or more internal lumens for circulating a cooling fluid therethrough and an electrically and thermally-conductive protrusion having a temperature sensing element. The temperature sensing element extends from a distal end of the energy delivery device. The method includes inserting the energy delivery device of the at least one probe assembly into the patient's body. Further, the method includes routing the energy delivery device of the at least one probe assembly to the tissue of the patient's body. The method also includes simultaneously circulating the cooling fluid through the one or more internal lumens via at least one pump assembly and delivering energy from the power source to the tissue through the energy delivery device. Further, the method includes monitoring one or more procedure parameters while delivering the energy from the power source to the tissue through the energy delivery device. Moreover, the method includes determining, in real-time, whether a rising impedance event is likely to occur in a predetermined time period based on the one or more procedure parameters and determining a command for the pump assembly based on whether the rising impedance event is likely to occur in the predetermined time period.

System and method for mitigating rising impedance via a pump assembly during use of cooled radiofrequency probes

A system for packaging a kit for a radiofrequency ablation procedure protects a radiofrequency ablation kit without compromising its sterile barrier system through the hazards of handling, distribution, and storage. The system includes: an introducer tray configured to hold at least one introducer; a probe tray configured to hold at least one radiofrequency ablation probe; an outer carrier tray, a pouch configured to hold a tubing kit; and a dispenser carton. The introducer tray and the probe tray are held within the outer carrier tray, and the outer carrier tray and the pouch are configured to be held within the dispenser carton. A method of packaging a radiofrequency ablation kit is further described.

System and method for packaging and preparing a radiofrequency ablation kit

A controller for a cooled radiofrequency ablation system is configured to sequentially activate a plurality of pump assemblies with a pump activation time delay between the activation of each of the plurality of pump assemblies, measure a temperature drop delay time for each of a plurality of cooled radiofrequency ablation probes, map each respective pump assembly of the plurality of pump assemblies to a corresponding cooled radiofrequency ablation probe of the plurality of cooled radiofrequency ablation probes based on the temperature drop delay time and an activation time of each of the plurality of pump assemblies, and confirm the mapping of each respective pump assembly to the corresponding cooled radiofrequency ablation probe by comparing, for each of the plurality of cooled radiofrequency probes, the measured temperature drop delay time to an expected temperature drop delay time.

System and method to map active RF channels to respective pump heads for cooled radiofrequency ablation

A method for preparing a cooled radiofrequency probe for use to treat tissue of a patient's body includes providing a plurality of cooled radiofrequency probes. Each of the plurality of cooled radiofrequency probes includes an elongate member with a distal region and a proximal region. The distal regions each have an electrically and thermally-conductive energy delivery device for delivering one of electrical and radiofrequency energy to the patient's body. The electrically and thermally-conductive energy delivery devices each have one or more internal lumens for circulating a cooling fluid therethrough and an electrically and thermally-conductive protrusion having a temperature sensing element. The temperature sensing elements of each protrusion extends from a distal end of the energy delivery device. Further, each of the temperature sensing elements has a different length that extends from the distal end of the energy delivery device. The method further includes determining at least one of a desired lesion size or a desired rate of power delivery required to treat the tissue. As such, the method includes selecting one of the probes from the plurality of cooled radiofrequency probes based on the length of the temperature sensing element thereof that achieves the desired lesion size or the desired rate of power delivery.

Varying the length of a temperature sensing element of a radiofrequency probe based on desired lesion size

A system and method of treating tissue of a patient's body includes providing a power source coupled to at least one probe assembly. The probe assembly has at least one an elongate member with a distal region and a proximal region. The distal region has an electrically and thermally-conductive energy delivery device that includes one or more internal lumens and an electrically and thermally-conductive protrusion having a temperature sensing element. The method also includes inserting the energy delivery device into the patient's body. Further, the method includes routing the energy delivery device to the tissue of the patient's body. Moreover, the method includes simultaneously circulating the cooling fluid through the internal lumens via at least one pump assembly and delivering energy from the power source to the tissue through the energy delivery device. The method further includes actively controlling energy delivered to the tissue by controlling an amount of energy delivered through the energy delivery device and by controlling a flow rate of the pump assembly.

System and method for generating lesions of a certain size by controlling energy delivered and pump flow rate

The present invention is directed to a system for delivering radiofrequency ablation energy to an area or volume of tissue. The system includes a wrap, where a stiffening element surrounds an opening in the wrap, where the stiffening element transfers radial compression to the area or volume of tissue, where the radial compression increases stability of the area or volume of tissue; and at least one radiofrequency ablation probe having an active electrode, where the at least one radiofrequency ablation probe is connected to a radiofrequency generator via a lead. A device that includes a wrap and a method of delivering radiofrequency ablation energy to a volume of tissue via the device are also described.

Device to reduce steam pops and increase tissue stability during radiofrequency ablation

Cooling systems for medical probe assemblies are provided. For example, a cooling system comprises a pump assembly including a control unit having a controller, a motor, and a pump head driven by the motor; a fluid reservoir; a lumen for delivering a cooling fluid to the medical probe assembly distal end; tubing extending through the pump head for conveying the cooling fluid from the fluid reservoir to the lumen; and a flow sensor for sensing the cooling fluid flow rate. The pump head is disposed between the fluid reservoir and the medical probe assembly to pump the cooling fluid from the fluid reservoir to the lumen. The flow sensor is disposed between the pump head and the medical probe assembly to sense the cooling fluid flow rate. Methods for controlling fluid flow rate through a cooling circuit and systems for using a plurality of medical probe assemblies also are provided.

Flow rate control for a cooled medical probe assembly

A protective cover or sleeve for a medical spike product is provided. The protective cover includes a first panel having a lower edge, and a second panel having a lower edge, wherein the first panel and the second panel are connected at their lower edges, respectively. The first panel and the second panel are configured to be spaced apart to form a protective sleeve. The protective sleeve is configured to receive the medical spike product such that the first panel and the second panel protectively cover and enable aseptic handling of a spike end of the medical spike product and prevent the spike end from breaching a sterile barrier. The protective sleeve may be made from a paper-based material. A medical spike product assembly including the protective cover and a medical spike product inserted therein is also provided.

Protective cover for medical spike products

IV spike cover

A dispersive return pad for a radiofrequency ablation procedure includes a skin material adapted to be worn on a patient's skin, a conductive material positioned adjacent to the skin material, a non-conductive material surrounding the conductive material, and a phase-change material surrounding at least a portion of a side edge of the conductive material. Further, the phase-change material is configured to undergo a phase transition at a target temperature range corresponding to a non-damaging hyperthermic temperature range for the patient's skin. As such, the phase-change material is configured to absorb excess heating from the RF ablation procedure and to prevent burns to the patient's skin.

Dispersive return pad with phase change material for active thermal management during an ablation procedure

A cooling radiofrequency ablation probe for delivering electrical and thermal energy to tissue of a patient's body is provided. The probe comprises a handle having an upper portion, a lower portion, and a Luer connector. The probe further comprises an extended electrocap assembly interfacing with one end of the handle, and a cable-tubing assembly interfacing with another end of the handle. The cable-tubing assembly includes an electrical cable that terminates at an electrical connector and a dual-lumen fluid tubing that terminates at inlet and outlet fluid connectors. An active tip of the extended electrocap assembly is configured to deliver the electrical and thermal energy to the tissue of the patient's body.

Cooled radiofrequency ablation probe

Pump assemblies and systems are provided. For example, a pump assembly comprises a pump head, a bezel surrounding an outer perimeter of the pump head, a motor, and tubing. The bezel comprises a bezel upper side, a bezel lower side opposite the bezel upper side, a bezel inlet side extending from the bezel upper side to the bezel lower side, and a bezel outlet side opposite the bezel inlet side and extending from the bezel upper side to the bezel lower side. The bezel defines an inlet channel on the bezel inlet side and an outlet channel on the bezel outlet side, each of the inlet channel and the outlet channel guiding the tubing into the pump head. An exemplary pump system comprises a plurality of pump assemblies that each supply a fluid to a cooling circuit and a base for supporting the plurality of pump assemblies.

Peristaltic pump assembly and system

Pump heads for peristaltic pump assemblies are provided. For example, a pump head for a peristaltic pump comprises an occlusion bed, a rotor guide, a rotor assembly positioned between the occlusion bed and the rotor guide, and a pathway for tubing. The pathway comprises an inlet portion, an outlet portion, and a connecting portion that connects the inlet and outlet portions. The inlet portion is defined between the occlusion bed and the rotor guide, the outlet portion is defined between the occlusion bed and the rotor guide, and the connecting portion is defined between the occlusion bed and the rotor assembly. Further, the occlusion bed is movable with respect to the rotor guide and the rotor assembly. In exemplary embodiments, the pump head urges fluid flow through the tubing to supply a cooling fluid to a medical probe assembly for delivering energy to a patient's body.

Growing community of inventors

Decatur, GA, United States of America

Ruoya Wang