Patent US6582426B2 successfully refreshed from Google Patents.
US6582426B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle kit and method for microwave ablation, track coagulation, and biopsy
Assignee: Covidien LP
•
Filing: 2001-04-06
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Granted: 2003-06-24
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Expires: 2021-04-06
Abstract
Abstract A modular biopsy, ablation and track coagulation needle apparatus is disclosed that allows the biopsy needle to be inserted into the delivery needle and removed when not needed, and that allows an inner ablation needle to be introduced and coaxially engaged with the delivery needle to more effectively biopsy a tumor, ablate it and coagulate the track through ablation while reducing blood loss and track seeding. The ablation needle and biopsy needle are adapted to in situ assembly with the delivery needle. In a preferred embodiment, the ablation needle, when engaged with the delivery needle forms a coaxial connector adapted to electrically couple to an ablating source. Methods for biopsying and ablating tumors using the device and coagulating the track upon device removal are also provided.
Inventors
- 👤 Jack W. Moorman
- 👤 M. Elizabeth Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:37
CPC Classifications
A; A61; A61B; A61B10/00; A61B10/02; A61B10/0233; A61B10/0266; A61B10/0275; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B18/18; A61B18/1815; A61B17/00; A61B17/34; A61B17/3403; A61B2018/00571; A61B2018/00577; A61B2018/183; A61B2018/1846; A61B90/00; A61B90/39; A61B2090/3937; A61B90/10; A61B90/11
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
127 words
A modular needle kit for ablation through a puncture site, comprising: a delivery needle insertable through the puncture site, said delivery needle having an open proximal end and an open distal end with a lumen extending therebetween; an ablation needle adapted for ablating tissue abnormalities and coagulating an insertion track, said ablation needle comprising a transmission line and a microwave antenna electrically coupled to said transmission line, wherein said microwave antenna is insertable through said open proximal end of said delivery needle and extends beyond said distal end of said delivery needle when said ablation needle is distally displaced within said lumen of said delivery needle; and a positional connector adapted to detachably couple to said ablation needle in a fixed positional relationship with said delivery needle.
Claim 2
Dependent Claim
127 words
A modular needle kit for ablation through a puncture site, comprising: a delivery needle insertable through the puncture site, said delivery needle having an open proximal end and an open distal end with a lumen extending therebetween; an ablation needle adapted for ablating tissue abnormalities and coagulating an insertion track, said ablation needle comprising a transmission line and a microwave antenna electrically coupled to said transmission line, wherein said microwave antenna is insertable through said open proximal end of said delivery needle and extends beyond said distal end of said delivery needle when said ablation needle is distally displaced within said lumen of said delivery needle; and a positional connector adapted to detachably couple to said ablation needle in a fixed positional relationship with said delivery needle.
Claim 3
Dependent Claim
62 words
The kit of claim 1 , wherein: said delivery needle further comprises a first connector for electrically coupling to an outer conductor of said transmission line, said ablation needle further comprises a second connector electrically coupled to a center conductor of said transmission line, and said first and second connectors can be coupled to form a coaxial connector comprising said positional connector.
Claim 4
Dependent Claim
27 words
The kit of claim 1 , wherein said positional connector comprises an external clamp attachable about the proximal ends of said ablation needle and said delivery needle.
Claim 5
Dependent Claim
49 words
The kit of claim 1 , wherein said positional connector is adapted to detachably couple said ablation needle with said delivery needle in a fixed positional relationship for coagulation of an insertion track, wherein said fixed positional relationship is different from a positional relationship used for ablating tissue abnormalities.
Claim 6
Dependent Claim
21 words
The kit of claim 1 , wherein said delivery needle comprises a distal portion having a diameter of 17 gauge smaller.
Claim 7
Dependent Claim
53 words
The kit of claim 1 , further comprising a biopsy needle, said biopsy needle formed to be slidably disposed within said lumen of said delivery needle, wherein said biopsy needle extends beyond said distal end of said delivery needle when said biopsy needle is distally displaced within said lumen of said delivery needle.
Claim 8
Dependent Claim
21 words
The kit of claim 6 , wherein said biopsy needle is adapted for use as an obturator of said delivery needle.
Claim 9
Dependent Claim
19 words
The kit of claim 6 , wherein said biopsy needle is of an aspirating type or a coring type.
Claim 10
Dependent Claim
16 words
The kit of claim 1 , wherein said delivery needle is formed of a nonconductive material.
Claim 11
Dependent Claim
14 words
The kit of claim 1 , wherein said delivery needle is formed of plastic.
Claim 12
Dependent Claim
15 words
The kit of claim 1 , wherein said delivery needle comprises a flat distal end.
Claim 13
Dependent Claim
15 words
The kit of claim 1 , wherein said microwave antenna comprises a flat distal end.
Claim 14
Dependent Claim
32 words
A system for ablation of tissue comprising: the kit of claim 1 , and a microwave power source, wherein said transmission line is adapted to electrically couple to said microwave power source.
Claim 15
Dependent Claim
96 words
A method of ablating abnormalities in tissue, the method comprising the steps of: providing the system of claim 13 ; introducing the distal end of the delivery needle into tissue in a predetermined area; inserting the distal end of the ablating needle into the lumen of the delivery needle through the open proximal end of the delivery needle; advancing the distal end of the ablating needle to protrude from the distal end of the delivery needle; and ablating the tissue in the predetermined site by delivering microwave power to the microwave antenna through the transmission line.
Claim 16
Dependent Claim
23 words
The method of claim 14 , wherein said introducing step comprises percutaneously introducing the distal end of the delivery needle into the tissue.
Claim 17
Dependent Claim
23 words
The method of claim 14 , wherein said introducing step comprises laparoscopically introducing the distal end of the delivery needle into the tissue.
Claim 18
Dependent Claim
27 words
The method of claim 14 , wherein said introducing step comprises introducing the distal end of the delivery needle into the tissue through an open surgical incision.
Claim 19
Dependent Claim
57 words
The method of claim 14 , wherein said introducing step forms an insertion track, said method further comprising the steps of: coupling said ablation needle in a fixed positional relationship with said delivery needle; partially withdrawing the delivery needle and the ablation needle after said ablating step; and coagulating at least a portion of the insertion track.
Claim 20
Dependent Claim
87 words
The method of claim 14 , further comprising the steps of: providing a biopsy needle formed to be slidably disposable within the lumen of the delivery needle; inserting the distal end of the biopsy needle into the lumen of the delivery needle through the open proximal end of the delivery needle before said step of inserting the distal end of the ablating needle into the lumen of the delivery needle; sampling a tissue sample with the biopsy needle; and removing the biopsy needle from the delivery needle.
Claim 21
Dependent Claim
24 words
The method of claim 19 , wherein said introducing step occurs while the biopsy needle is inserted through the lumen of the delivery needle.
Claim 22
Independent Claim
124 words
A method of ablating an abnormality in tissue, the method comprising the steps of: providing a system for ablation of tissue comprising: a microwave antenna, a transmission line coupled to the microwave antenna, and a microwave power source, wherein the transmission line is adapted to electrically couple to the microwave power source; introducing the distal end of the microwave antenna into tissue containing an abnormality to be ablated, whereby an insertion track is created proximal of the abnormality; ablating the abnormality by applying microwave power to create a microwave field suitable for ablation of the abnormality in the tissue containing the abnormality; altering the microwave field to produce a field suited for track coagulation; and coagulating at least a portion of the insertion track.
Claim 23
Independent Claim
124 words
A method of ablating an abnormality in tissue, the method comprising the steps of: providing a system for ablation of tissue comprising: a microwave antenna, a transmission line coupled to the microwave antenna, and a microwave power source, wherein the transmission line is adapted to electrically couple to the microwave power source; introducing the distal end of the microwave antenna into tissue containing an abnormality to be ablated, whereby an insertion track is created proximal of the abnormality; ablating the abnormality by applying microwave power to create a microwave field suitable for ablation of the abnormality in the tissue containing the abnormality; altering the microwave field to produce a field suited for track coagulation; and coagulating at least a portion of the insertion track.
Claim 24
Dependent Claim
31 words
The method of claim 21 , wherein said step of altering the microwave field comprises: decreasing the diameter of the microwave field, increasing the length of the microwave field, or both.
Claim 25
Dependent Claim
20 words
The method of claim 21 , wherein said step of altering the microwave field comprises decreasing the microwave power applied.
Claim 26
Dependent Claim
23 words
The method of claim 21 , wherein said step of alternating the microwave field comprises changing the frequency of the microwave power applied.
Claim 27
Dependent Claim
23 words
The method of claim 21 , wherein said step of altering the microwave field comprises changing the physical dimensions of the microwave antenna.
Claim 28
Dependent Claim
44 words
The method of claim 25 , wherein said introducing step comprises introducing the microwave antenna through a lumen of a delivery needle, and wherein the physical dimensions of the microwave antenna are changed by displacing the antenna within the lumen of the delivery needle.
Claim 29
Dependent Claim
18 words
The method of claim 26 , wherein the antenna is displaced proximally with respect to the delivery needle.
Claim 30
Dependent Claim
18 words
The method of claim 26 , wherein the antenna is displaced distally with respect to the delivery needle.
Claim 31
Dependent Claim
33 words
The method of claim 25 , wherein the physical dimensions of the microwave antenna are changed by removing the microwave antenna and replacing it with a second microwave antenna of different physical dimensions.
Claim 32
Dependent Claim
60 words
The method of claim 21 , wherein said step of ablating the abnormality comprises creating a predetermined isotherm at a first predetermined distance from the antenna, and wherein said step of coagulating the insertion track comprises creating the predetermined isotherm at a second predetermined distance from the antenna, wherein said second predetermined distance is less than said first predetermined distance.
Claim 33
Dependent Claim
35 words
The method of claim 21 , wherein said step of coagulating the insertion track comprises: coagulating a first portion of the insertion track; repositioning the antenna; and coagulating a second portion of the insertion track.
Claim 34
Dependent Claim
31 words
The method of claim 31 , wherein the system for ablation comprises markings, and wherein said markings are used to determine the new position of the antenna during said repositioning step.
Claim 35
Independent Claim
109 words
A method of ablating abnormalities in tissue, the method comprising the steps of: introducing a delivery needle into a patient until the delivery needle is suitably positioned with respect to a tumor; displacing a biopsy needle within a lumen of the delivery needle until a distal end of the biopsy needle protrudes from a distal end of the delivery needle; performing a biopsy; removing the biopsy needle from the delivery needle; detachably positioning an ablation needle through the delivery needle into the tumor; applying microwave power to the ablation needle to ablate the tumor; removing the ablation needle from the tumor; and removing the delivery needle from the patient.
Claim 36
Independent Claim
109 words
A method of ablating abnormalities in tissue, the method comprising the steps of: introducing a delivery needle into a patient until the delivery needle is suitably positioned with respect to a tumor; displacing a biopsy needle within a lumen of the delivery needle until a distal end of the biopsy needle protrudes from a distal end of the delivery needle; performing a biopsy; removing the biopsy needle from the delivery needle; detachably positioning an ablation needle through the delivery needle into the tumor; applying microwave power to the ablation needle to ablate the tumor; removing the ablation needle from the tumor; and removing the delivery needle from the patient.
Claim 37
Dependent Claim
23 words
The method of claim 33 , wherein said introducing step comprises percutaneously introducing the distal end of the delivery needle into the patient.
Claim 38
Dependent Claim
23 words
The method of claim 33 , wherein said introducing step comprises laparoscopically introducing the distal end of the delivery needle into the patient.
Claim 39
Dependent Claim
27 words
The method of claim 33 , wherein said introducing step comprises introducing the distal end of the delivery needle into the patient through an open surgical incision.
Claim 40
Dependent Claim
28 words
The method of claim 33 , wherein said displacing step occurs after said introducing step, such that the biopsy needle protrudes from the delivery needle into the tumor.
Claim 41
Dependent Claim
45 words
The method of claim 33 , wherein said displacing step occurs before said introducing step, such that the biopsy needle acts as the obturator for the delivery needle, and such that the delivery needle and biopsy needle are introduced as a unit into the patient.
Claim 42
Dependent Claim
23 words
The method of claim 33 , wherein said displacing step comprises displacing a coring-type biopsy needle within a lumen of the delivery needle.
Claim 43
Dependent Claim
23 words
The method of claim 33 , wherein said displacing step comprises displacing an aspirating-type biopsy needle within the lumen of the delivery needle.
Claim 44
Dependent Claim
28 words
The method of claim 33 , wherein said detachably positioning step comprises inserting an ablation needle having a sharpened distal end through the delivery needle into the tumor.
Claim 45
Dependent Claim
28 words
The method of claim 33 , wherein said detachably positioning step comprises inserting an ablation needle having a flat distal end through the delivery needle into the tumor.
Claim 46
Dependent Claim
20 words
The method of claim 33 , further comprising the step of mechanically coupling the ablation needle to the delivery needle.
Claim 47
Dependent Claim
32 words
The method of claim 43 , wherein said mechanically coupling step comprises attaching an external clamp about the proximal end of the ablation needle and the proximal end of the delivery needle.
Claim 48
Dependent Claim
35 words
The method of claim 33 , further comprising the steps of: adjusting the relative position of the ablation needle and the delivery needle for track coagulation as compared to tumor ablation; and coagulating the track.
Claim 49
Dependent Claim
16 words
The method of claim 45 , further comprising the step of coagulating the track by steps.
Claim 50
Dependent Claim
32 words
The method of claim 33 , further comprising the steps of: performing a second biopsy through the delivery needle after said step of removing the ablating needle; and removing the biopsy needle.
Claim 51
Independent Claim
79 words
A method of ablating abnormalities in tissue, the method comprising the steps of: introducing a delivery needle into a patient until the delivery needle is suitably positioned with respect to a tumor; detachably positioning an ablation needle through a lumen of the delivery needle into or adjacent to the tumor; applying microwave power to the ablation needle to ablate the tumor; and removing the ablation needle from the patient while continuing to apply microwave power to the ablation needle.
Claim 52
Independent Claim
79 words
A method of ablating abnormalities in tissue, the method comprising the steps of: introducing a delivery needle into a patient until the delivery needle is suitably positioned with respect to a tumor; detachably positioning an ablation needle through a lumen of the delivery needle into or adjacent to the tumor; applying microwave power to the ablation needle to ablate the tumor; and removing the ablation needle from the patient while continuing to apply microwave power to the ablation needle.
Claim 53
Dependent Claim
46 words
The method of claim 48 , further comprising the step of displacing a biopsy needle within a lumen of the delivery needle until a distal end of the biopsy needle protrudes from a distal end of the delivery needle prior to the step of detachably positioning.
Claim 54
Dependent Claim
14 words
The method of claim 49 , further comprising the step of performing a biopsy.
Claim 55
Dependent Claim
19 words
The method of claim 50 , further comprising the step of removing the biopsy needle from the delivery needle.
Claim 56
Dependent Claim
23 words
The method of claim 48 , wherein said introducing step comprises percutaneously introducing the distal end of the delivery needle into the patient.
Claim 57
Dependent Claim
27 words
The method of claim 48 , wherein said introducing step comprises introducing the distal end of the delivery needle into the patient through an open surgical incision.
Claim 58
Dependent Claim
28 words
The method of claim 48 , wherein said detachably positioning step comprised inserting an ablation needle having a sharpened distal end through the delivery needle into the tumor.
Claim 59
Dependent Claim
28 words
The method of claim 48 , wherein said detachably positioning step comprises inserting an ablation needle having a flat distal end through the delivery needle into the tumor.
Claim 60
Dependent Claim
30 words
The method of claim 48 , wherein said removing step comprises removing the ablation needle and the delivery needle simultaneously while continuing to apply microwave power to the ablation needle.
Claim 61
Dependent Claim
19 words
The method of claim 48 , wherein said removing step comprises removing the ablation needle in a stepped manner.
References Cited (Backward Citations)
US3598108A
Cited
US3886944A
Cited
US4448198A
Cited
US4565200A
Cited
US4825880A
Cited
US5085659A
Cited
US5171255A
Cited
US5861002A
Cited
US5599295A
Cited
US5370675A
Cited
US5607389A
Cited
US5470308A
Cited
US5405346A
Cited
US5507743A
Cited
US5683384A
Cited
US5578030A
Cited
US6106524A
Cited
US5853366A
Cited
WO1998006341A1
Cited
US6162216A
Cited
US6178354B1
Cited
WO2000056239A1
Cited
US6146378A
Cited
US6325796B1
Cited
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