Using a guided member to facilitate brachytherapy device swap

Patent metadata

Field	Value
Publication number	US-2016287902-A1
Application number	US-201615167589-A
Country	US
Kind code	A1
Filing date	May 27, 2016
Priority date	Sep 30, 2010
Publication date	Oct 6, 2016
Grant date	—

Abstract

A guide member facilitates a device swap for brachytherapy treatment. A cavity evaluation device is introduced during surgery such that a distal end of the device is disposed in a resected cavity of the patient. The cavity evaluation device includes a shaft in which is disposed an elongated guide member. In a subsequent out-patient procedure the cavity evaluation device is removed from the resected cavity. If a brachytherapy treatment is to be performed then the cavity evaluation device is removed without removing the elongated guide member such that position of a portion of the elongated guide member in the resected cavity is maintained relative to the resected cavity. An anchor member helps to maintain the position of the guide member. Introduction of a brachytherapy catheter is then facilitated by introducing the elongated guide member into an opening of the brachytherapy catheter and using the elongated guide member to guide the brachytherapy catheter to the resected cavity.

First claim

1 .- 9 . (canceled)

10 . An apparatus for facilitating brachytherapy treatment comprising:
an elongated guide member comprising a guide wire and a non-inflatable anchor member at a distal end of the guide wire, wherein the non-inflatable anchor member comprises a curvature; and a device comprising:
a shaft defining a lumen configured to slidably receive the elongated guide member;
a tip disposed at a first end of the shaft, wherein the tip comprises an outer curvature configured to mate with the non-inflatable anchor curvature when the elongated guide member is received in the lumen;
an inflatable member disposed around the shaft;
an inflation lumen which transfers fluid into and out of the inflatable member; and
an opening in the tip which receives the elongated guide member, and via which the elongated guide member can be introduced to soft tissue, wherein the opening is sized so as to receive all but the non-inflatable anchor member of the elongated guide member.

11 . The apparatus of claim 10 further including a dosing lumen disposed in the shaft to receive a radiation source.

12 . (canceled)

13 . The apparatus of claim 10 wherein the non-inflatable anchor member curvature is contoured to match the tip outer curvature against which the non-inflatable anchor member is disposed when the guidewire is loaded into the shaft.

14 . The apparatus of claim 13 wherein the opening in the tip is through a side of the tip.

15 . The apparatus of claim 13 wherein the opening in the tip is through a most distal portion of the tip.

16 . The apparatus of claim 13 further including a sheath disposed around a free end of the guide wire.

17 . The apparatus of claim 16 further including a push wire inserted into the sheath to apply force against the free end of the guide wire.

18 .- 21 . (canceled)

22 . The apparatus of claim 10 , wherein the shaft comprises a rigid portion and a flexible portion and wherein the inflatable member is disposed about the rigid portion.

23 . The apparatus of claim 10 , wherein the device is a brachytherapy catheter.

24 . The apparatus of claim 10 , wherein the device is a cavity evaluation device.

25 . An system for facilitating brachytherapy treatment comprising:
an elongated guide member comprising a guide wire and a non-inflatable anchor member at a distal end of the guide wire, wherein the non-inflatable anchor member comprises a curvature; a brachytherapy catheter comprising:
a shaft defining:
a guide member lumen;
an inflation lumen; and
a dosing lumen, wherein the shaft comprises an outer curvature configured to mate with the non-inflatable anchor member curvature when the guide wire is inserted fully into the guide member lumen; and

an inflation member disposed about the shaft and fluidically connected to the inflation lumen, wherein the inflation member is selectively inflatable via introduction of an inflation fluid via the inflation lumen; and
a cavity evaluation device comprising:
a shaft defining:
a guide member lumen; and
an inflation lumen, wherein the shaft comprises an outer curvature configured to mate with the non-inflatable anchor member curvature when the guide wire is inserted fully into the guide member lumen; and

an inflation member disposed about the shaft and fluidically connected to the inflation lumen, wherein the inflation member is selectively inflatable via introduction of an inflation fluid via the inflation lumen, wherein the brachytherapy catheter and the cavity evaluation device are individually selectively configured to be engaged with the elongated guide member.

26 . The system of claim 25 , wherein the outer curvature of the brachytherapy catheter shaft is substantially similar to the outer curvature of the cavity evaluation device shaft.

27 . The system of claim 25 , wherein the curvature of the non-inflatable anchor member contacts the outer curvatures of each of the brachytherapy catheter and the cavity evaluation device on side surfaces thereof.

28 . The system of claim 25 , wherein the curvature of the non-inflatable anchor member contacts the outer curvatures of each of the brachytherapy catheter and the cavity evaluation device on end surfaces thereof.

29 . The system of claim 25 , wherein both of the outer curvatures match the curvature of the non-inflatable anchor member.

30 . An apparatus for facilitating brachytherapy treatment comprising:
a device comprising:
a shaft defining a guide member lumen;
a tip disposed at a first end of the shaft, wherein the tip comprises an outer curvature, and wherein the tip defines an opening connected to the guide member lumen;
an inflatable member disposed around the shaft; and
an inflation lumen in communication with the inflatable member; and
a guide member comprising:
a guide wire, wherein the guide wire is slidably received in the guide member lumen; and
a substantially disk-shaped anchor member connected to the guide wire at a center of the substantially disk-shaped anchor member, wherein the substantially disk-shaped member comprises a curvature configured to match the outer curvature when the guide member is completely received in the guide member lumen.

31 . The apparatus of claim 30 , wherein the opening id defined by a tip of the shaft.

32 . The apparatus of claim 30 , wherein the opening is defined by a side surface of the shaft.

33 . The apparatus of claim 30 , wherein the guide member lumen is defined by a portion of the shaft off-center of the shaft.

34 . The apparatus of claim 30 , wherein the shaft comprises a rigid portion and a flexible portion and wherein the inflatable member is disposed about the rigid portion.

Assignees

• Hologic Inc

Inventors

• Benson Maria

Classifications

• A61M25/01

  Introducing, guiding, advancing, emplacing or holding catheters (A61M25/10 takes precedence) · CPC title

• A61N2005/1008

  Apparatus for temporary insertion of sources, e.g. afterloaders · CPC title

• A61M25/0169

  Exchanging a catheter while keeping the guidewire in place · CPC title

• A61N5/1015 Primary

  Treatment of resected cavities created by surgery, e.g. lumpectomy · CPC title

• A61B2017/00022

  Sensing or detecting at the treatment site · CPC title