Biopsy sampler

• US 20020049442A1
• Filed: 07/16/2001
• Published: 04/25/2002
• Est. Priority Date: 07/27/1999
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Scimed Life Systems Incorporated (Boston Scientific Corporation)
• Inventors: Roberts, Troy W., Shaw, William J., Diamond, Bruce H.
• Granted Patent: US 6,692,445 B2
• Time in Patent Office: Days
• US Class Current: 606/50
• CPC Class Codes: A61B 10/02 Instruments for taking cell samples or for biopsy A61B10/0038 and A61B10/0045 take precedence; needle locating or guiding means A61B17/3403; samplers for enzymology or microbiology C12M1/26; sampling or preparing biological specimens G01N33/48
• CPC Class Codes: A61B 10/06 Biopsy forceps , e.g. with cup-shaped jaws
• CPC Class Codes: A61B 17/32056 Surgical snare instruments for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26
• CPC Class Codes: A61B 17/3478 Endoscopic needles, e.g. for infusion biopsy needles A61B10/0233; catheters with injection needles A61M25/0067
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 18/1492 having a flexible, catheter-like structure, e.g. for heart ablation A61B18/1477 takes precedence
• CPC Class Codes: A61B 2018/0016 Energy applicators arranged in a two- or three dimensional array
• CPC Class Codes: A61B 2018/00595 Cauterization
• CPC Class Codes: A61B 2018/126 bipolar

Abstract

The invention features an assembly for taking a biopsy sample from a site within the body of a patient. The assembly includes a resecting device having a cutter near its distal end for resecting and containing a tissue sample and a sheath exterior to the resecting device and sized to be present within the body with the resecting device. The sheath includes an electrode element electrically isolated from the resecting device and disposed on the sheath'"'"'s outer surface for cauterizing tissue. The electrode element may reside on the outer sheath, the distal end or both the outer sheath and the distal end of the assembly. The resecting device and the sheath cooperate to permit sequential resecting of a tissue sample from a resecting site and cauterizing of the site with the cutter sufficiently spaced from the electrode element to avoid heat damage to the tissue sample.

Claims

1. An assembly for performing a medical procedure, comprising:

an endoscopically deployed medical device for tissue-plasty, and

a sheath exterior to said medical device and sized to be present within the body with said medical device, said sheath including an electrode element electrically isolated from said medical device and disposed on said sheath'"'"'s outer surface for cauterizing tissue, and said medical device and sheath being cooperatively constructed to permit spatial separation between said medical device and said electrode element,

said medical device being constructed to surgically manipulate tissue prior to said cauterization.

2. The assembly of claim 1 wherein said outer sheath portion of said electrode element includes a spiral pattern.

3. The assembly of claim 1 wherein said outer sheath portion of said electrode element includes a parallel component of said electrode element.

4. The assembly of claim 1 further including:

a portion of said electrode element located on a distal end of said outer sheath.

5. The assembly of claim 4 wherein said distal end portion of said electrode element is “

C”

shaped.

6. The assembly of claim 4 wherein said distal end portion of said electrode element includes bipolar electrodes.

7. The assembly of claim 5 wherein said electrode element is three dimensional in shape.

8. An assembly for performing a medical procedure, comprising:

an endoscopically deployed medical device for tissue-plasty, and

a sheath exterior to said medical device and sized to be present within the body with said medical device and including

a) a lumen sized to slidably receive said medical device,

b) said sheath including an electrode element electrically isolated from said medical device and disposed on said sheath'"'"'s outer surface for cauterizing tissue,

said medical device being constructed to surgically manipulate tissue prior to said cauterization.

9. An assembly for performing a medical procedure, comprising:

an endoscopically deployed medical device for tissue-plasty, and

a sheath exterior to said medical device and sized to be present within the body with said medical device, wherein said sheath and medical device are constructed as a unitary device, and wherein said medical device extends distally of the termination of said sheath,

said sheath including an electrode element electrically isolated from said medical device, spaced proximally to said medical device, and disposed on said sheath'"'"'s outer surface for cauterizing tissue,

said medical device and sheath cooperatively constructed to permit sequential tissue-plasty and cauterization of tissue.

10. A method for performing a medical procedure, comprising:

including a medical device for tissue-plasty near its distal end,

a sheath exterior to said medical device including an electrode element electrically isolated from said medical device,

providing an assembly wherein said sheath and medical device are constructed as a unitary device wherein said medical device extends distally of the termination of said sheath and said electrode is spaced proximally of said medical device,

positioning said medical device and said sheath along a treatment path,

positioning said medical device at a tissue-plasty site,

surgically manipulating said tissue-plasty site with said medical device;

positioning said electrodes at said tissue-plasty site, and

cauterizing said site by application of power to said electrode element.