US6015390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System and method for stabilizing and removing tissue
Assignee: Varian Medical Systems Inc
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Filing: 1998-06-12
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Granted: 2000-01-18
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Expires: 2018-06-12
Abstract
Abstract A system (8) and method for stabilizing a tissue mass, using temperature sensors (10), a scanner (80), and a cryoprobe (220). The sensors provide temperature information with respect to a tissue portion adjacent thereto. The sensors include an identification (ID) code and an ID decoder. The ID decoder compares the sensor ID code to an ID code contained in an interrogation signal provided by the scanner. If the codes match, the sensor transmits the temperature information to the scanner, which processes and displays the temperature information in a humanly recognizable form. The method includes the step of inserting a cryoprobe into a tissue volume to be stabilized so that a portion of the cryoprobe projects therefrom. Then, the tissue volume is frozen while monitoring the size or temperature of the tissue volume. Freezing is terminated when the tissue volume is frozen (or reaches a first temperature level), and then removed while grasping the cryoprobe so as to stabilize the tissue volume.
Inventors
- 👤 David N. Krag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:49
CPC Classifications
A; A61; A61B; A61B18/00; A61B18/02; A61B90/00; A61B90/10; A61B90/14; A61B90/17; A61B17/00; A61B2017/00017; A61B2017/00022; A61B2017/00084; A61B90/36; A61B90/37; A61B2090/374; A61B90/39; A61B2090/3904; A61B2090/3908; A61B34/00; A61B34/10; Y; Y10; Y10S; Y10S128/00; Y10S128/27
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
122 words
A system for use in stabilizing and removing a piece of tissue, the system comprising: a. a plurality of sensors, each sensor including: i. a temperature sensor for determining the temperature of the piece of tissue adjacent said each sensor, and for providing a first signal containing information that varies as a function of changes in said temperature; ii. an antenna for receiving an interrogation signal containing a first identification code; iii. a memory containing a second identification code; iv. an ID decoder connected to said antenna and said memory for comparing said first identification code and said second identification code to assess whether said first identification code matches said second identification code; and b. a scanner for providing said interrogation code.
Claim 2
Independent Claim
122 words
A system for use in stabilizing and removing a piece of tissue, the system comprising: a. a plurality of sensors, each sensor including: i. a temperature sensor for determining the temperature of the piece of tissue adjacent said each sensor, and for providing a first signal containing information that varies as a function of changes in said temperature; ii. an antenna for receiving an interrogation signal containing a first identification code; iii. a memory containing a second identification code; iv. an ID decoder connected to said antenna and said memory for comparing said first identification code and said second identification code to assess whether said first identification code matches said second identification code; and b. a scanner for providing said interrogation code.
Claim 3
Dependent Claim
61 words
A system according to claim 1, wherein each of said plurality of sensors further includes: a. a data encoder/multiplexer for multiplexing said first signal and said second identification code to form a multiplexed signal; and b. a data modulator connected to said data encoder/multiplexer and said antenna for generating a second signal containing said multiplexed signal for transmission by said antenna.
Claim 4
Dependent Claim
21 words
A system according to claim 1, wherein said memory is reprogrammable memory capable of being reprogrammed to store different identification codes.
Claim 5
Dependent Claim
56 words
A system according to claim 3, wherein said sensor further includes a mode decoder for determining if said interrogation signal includes ID programming code and for placing said sensor in a state in which a new second identification code may be stored in said memory in response to said interrogation signal including said ID programming code.
Claim 6
Dependent Claim
21 words
A system according to claim 1, wherein said scanner further includes a display for displaying a humanly recognizable representation of temperature.
Claim 7
Dependent Claim
22 words
A system according to claim 5, wherein said display has means for displaying said temperature for each of said plurality of sensors.
Claim 8
Dependent Claim
73 words
A system according to claim 1, further wherein: a. each of said plurality of sensors includes means for generating a second signal containing said information and said second identification code; and b. said scanner includes: i. an antenna for receiving said second signal; ii. a display for displaying temperature data; and iii. means connected to said antenna and said display for generating said temperature data based on said information in said second signal.
Claim 9
Dependent Claim
113 words
A system according to claim 1, further wherein: a. each of said plurality of sensors includes means for generating a second signal containing said information; and b. said scanner includes: i. an antenna for receiving said second signal; ii. means connected with said antenna for determining based on said information in said second signal whether the temperature of tissue adjacent one or more of said plurality of sensors has fallen below a target temperature, and for generating a third signal following determination that said temperature has fallen below said target temperature; and iii. an alarm connected to said means for providing a humanly recognizable signal in response to receipt of said third signal.
Claim 10
Dependent Claim
63 words
A system according to claim 1, wherein scanner further includes means for: a. generating a plurality of said first identification codes, each differing from other ones of said plurality of said first identification codes and each associated with a corresponding respective one of said plurality of sensors; and b. providing said interrogation signal so that it includes said plurality of first identification codes.
Claim 11
Dependent Claim
154 words
A system according to claim 1, further wherein: a. said plurality of sensors includes a first group of sensors and a second group of sensors, each of which includes means for generating a second signal containing said information; and b. said scanner includes: i. means for determining based on said information in said second signal (1) whether the temperature of tissue adjacent sensors in said first group of sensors has fallen below a temperature T1 and (2) whether the temperature of tissue adjacent sensors in said second group of sensors has fallen below a temperature T2; ii. an alarm connected to said means for providing a humanly recognizable signal when said means determines said temperature of tissue adjacent sensors in said first group of sensors has fallen below said temperature T1 or when said means determines said temperature of tissue adjacent sensors in said second group of sensors has fallen below said temperature T2.
Claim 12
Dependent Claim
16 words
A system according to claim 1, further including a cryoprobe for freezing the piece of tissue.
Claim 13
Independent Claim
123 words
A system for use in freezing tissue, the system comprising: a. a plurality of sensors, each sensor for determining the temperature of tissue adjacent thereto and providing a first signal containing (i) information regarding said temperature and (ii) a first identification code that uniquely identifies said each sensor in response to receipt of an interrogation signal having a second identification code that matches said first identification code; and b. a scanner for receiving said first signal, determining (a) the identity of each of said plurality of sensors based on said identification code and (ii) said temperature of tissue adjacent said each temperature sensor based on said information, and providing a humanly recognizable representation of said temperature of tissue adjacent said each temperature sensor.
Claim 14
Independent Claim
123 words
A system for use in freezing tissue, the system comprising: a. a plurality of sensors, each sensor for determining the temperature of tissue adjacent thereto and providing a first signal containing (i) information regarding said temperature and (ii) a first identification code that uniquely identifies said each sensor in response to receipt of an interrogation signal having a second identification code that matches said first identification code; and b. a scanner for receiving said first signal, determining (a) the identity of each of said plurality of sensors based on said identification code and (ii) said temperature of tissue adjacent said each temperature sensor based on said information, and providing a humanly recognizable representation of said temperature of tissue adjacent said each temperature sensor.
Claim 15
Dependent Claim
19 words
A system according to claim 12, further including a display for displaying said humanly recognizable representation of said temperature.
Claim 16
Dependent Claim
30 words
A system according to claim 12 further including an alarm for indicating if said temperature of one or more of said plurality of sensors has fallen below a target temperature.
Claim 17
Dependent Claim
60 words
A system according to claim 12, wherein each of said plurality of sensors further includes: a. a data encoder/multiplexer for multiplexing said information and said identification code to form a multiplexed signal; and b. a data modulator connected to said data encoder/multiplexer and said antenna for generating an RF output signal containing said multiplexed signal for transmission by said antenna.
Claim 18
Dependent Claim
113 words
A temperature sensor comprising: a. a temperature measuring unit for measuring the temperature of tissue adjacent thereto and providing a first signal that contains temperature information that varies as a function of changes in said temperature; b. an antenna for receiving a second signal containing a first identification code; c. a memory for storing a second identification code; and d. an identification decoder connected to said antenna and said memory for comparing said first identification code with said second identification code to determine if said first identification code is identical to said second identification code and for generating a third signal when said first identification code is identical to said second identification code.
Claim 19
Dependent Claim
113 words
A temperature sensor comprising: a. a temperature measuring unit for measuring the temperature of tissue adjacent thereto and providing a first signal that contains temperature information that varies as a function of changes in said temperature; b. an antenna for receiving a second signal containing a first identification code; c. a memory for storing a second identification code; and d. an identification decoder connected to said antenna and said memory for comparing said first identification code with said second identification code to determine if said first identification code is identical to said second identification code and for generating a third signal when said first identification code is identical to said second identification code.
Claim 20
Dependent Claim
14 words
A sensor according to claim 16, wherein said temperature measuring unit includes a thermistor.
Claim 21
Dependent Claim
25 words
A sensor according to claim 16, further comprising a data encoder/multiplexer for forming said third signal by multiplexing said second identification code with said information.
Claim 22
Dependent Claim
24 words
A sensor according to claim 16, wherein said memory unit is programmable and capable of storing one or more of said second identification codes.
Claim 23
Dependent Claim
23 words
A sensor according to claim 19, further comprising a mode decoder for decoding a sensor ID programming code contained in said second signal.
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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) | 2003-01-17 | 2003-07-19 | 2004-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-01-17 | 2007-07-19 | 2008-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-01-17 | 2011-07-19 | 2012-01-18 | $7700.00 | Window Closed / Lapsed |