Catheter system

Patent metadata

Field	Value
Publication number	US-9452016-B2
Application number	US-201314136946-A
Country	US
Kind code	B2
Filing date	Dec 20, 2013
Priority date	Jan 21, 2011
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

A manipulable portion of a catheter system advances out of a lumen of a catheter sheath at a distal end of a shaft, which is also within the lumen of the catheter sheath. The catheter system causes different advancement and retraction trajectories of a manipulable portion out of and into the lumen based at least upon different relative movements between the catheter sheath and the shaft. A projection and a corresponding receiver may be used to control relative positioning of the catheter sheath and the shaft, as well as to control positioning of the manipulable portion. The catheter system may control metering rates of a control element coupled to the manipulable portion during advancement and retraction of the manipulable portion. A control element of the catheter system has varying amounts of length outside a distal end of the catheter sheath during advancement and retraction of the manipulable portion.

First claim

What is claimed is:

1. A catheter system comprising:
a catheter sheath comprising a proximal end, a distal end, and a lumen extending within the catheter sheath between the proximal end of the catheter sheath and the distal end of the catheter sheath;
a shaft member comprising a shaft that includes a proximal end, a distal end, and an elongated portion extending between the proximal end of the shaft and the distal end of the shaft, at least part of the shaft sized for delivery through the lumen of the catheter sheath to a bodily cavity located in a body, and the distal end of the shaft arranged to be delivered through the lumen of the catheter sheath toward the bodily cavity prior to at least the elongated portion of the shaft;
a manipulable portion located at least proximate the distal end of the shaft, the manipulable portion sized for delivery though the lumen of the catheter sheath to the bodily cavity;
a projection including a length and extending from a location at least proximate a first one of the proximal end of the catheter sheath and the proximal end of the shaft;
a receiver provided at a location at least proximate a second one of the proximal end of the catheter sheath and the proximal end of the shaft, the projection and the receiver configured to matingly engage at least when the at least part of the shaft is received in the lumen of the catheter sheath; and
an actuator system operatively coupled to the manipulable portion to transmit force to the manipulable portion, the actuator system responsive to varying amounts of the length of the projection being within the receiver by varying the force transmitted to the manipulable portion.

2. The catheter system of claim 1 wherein the projection extends beyond the first one of the proximal end of the catheter sheath and the proximal end of the shaft at least when the at least part of the shaft is received in the lumen of the catheter sheath.

3. The catheter system of claim 1 wherein the projection extends outwardly from the first one of the proximal end of the catheter sheath and the proximal end of the shaft toward one of the proximal end of the catheter sheath and the proximal end of the shaft other than the first one, at least when the at least part of the shaft is received in the lumen of the catheter sheath.

4. The catheter system of claim 1 wherein the manipulable portion is configured to not be inserted into the receiver when the manipulable portion is delivered through the lumen of the catheter sheath to the bodily cavity.

5. The catheter system of claim 1 wherein the length of the projection is a longitudinal length of the projection extending from the location at least proximate the first one of the proximal end of the catheter sheath and the proximal end of the shaft to an end of the projection, the end of the projection configured to be received first in the receiver, as compared to other parts of the projection, when the projection is inserted into the receiver.

6. The catheter system of claim 5
wherein the shaft comprises a longitudinal length extending between the proximal and distal ends of the shaft, and
wherein the longitudinal length of the shaft is different than the longitudinal length of the projection.

7. The catheter system of claim 5
wherein the shaft comprises a longitudinal length extending between the proximal and distal ends of the shaft, and
wherein the longitudinal length of the shaft is greater than the longitudinal length of the projection.

8. The catheter system of claim 5
wherein the shaft comprises a longitudinal length extending between the proximal and distal ends of the shaft, and
wherein a first particular amount of the longitudinal length of the projection is located in the receiver when a second particular amount of the longitudinal length of the shaft is located inside the lumen of the catheter sheath, the first particular amount of the longitudinal length of the projection being less than second particular amount of the longitudinal length of the shaft.

9. The catheter system of claim 1 wherein the first one of the proximal end of the catheter sheath and the proximal end of the shaft is a same one as the second one of the proximal end of the catheter sheath and the proximal end of the shaft.

10. The catheter system of claim 1 wherein the first one of the proximal end of the catheter sheath and the proximal end of the shaft is different than the second one of the proximal end of the catheter sheath and the proximal end of the shaft.

11. The catheter system of claim 1 wherein the second one of the proximal end of the catheter sheath and the proximal end of the shaft is the proximal end of the shaft.

12. The catheter system of claim 11 wherein the first one of the proximal end of the catheter sheath and the proximal end of the shaft is the proximal end of the catheter sheath.

13. The catheter system of claim 1
wherein the shaft member further comprises a housing physically coupled to the shaft at a location at least proximate the second one of the proximal end of the catheter sheath and the proximal end of the shaft, and
wherein the receiver is located, at least in part, in the housing.

14. The catheter system of claim 13 wherein the actuator system is located, at least in part, in the housing.

15. The catheter system of claim 1
wherein the receiver comprises an internal receiving mechanism sized to matingly receive at least a portion of the projection, and
wherein the actuator system is responsive to a movement of the internal receiving mechanism within the receiver caused by a change in an amount of the length of the projection within the receiver by varying the force transmitted to the manipulable portion.

16. The catheter system of claim 15
wherein the internal receiving mechanism comprises a coupler that physically couples the internal receiving mechanism to at least the portion of the projection when at least the portion of the projection is matingly received in the internal receiving mechanism, and
wherein, when at least the portion of the projection is physically coupled to the internal receiving mechanism, at least the coupler of the internal receiving mechanism is configured to move during each of a first relative movement between the projection and the receiver that increases the amount of the length of the projection within the receiver, and a second relative movement between the projection and the receiver that decreases the amount of the length of the projection within the receiver.

17. The catheter system of claim 16 wherein the coupler captively couples the internal receiving mechanism to at least the portion of the projection when at least the portion of the projection is matingly received in the internal receiving mechanism.

18. The catheter system of claim 16
wherein the coupler is configured to physically couple the internal receiving mechanism to at least the portion of the projection when a first relative positioning between the projection and the receiver is established, and
wherein the coupler is configured to physically de-couple the internal receiving mechanism from the projection when a second relative positioning between the projection and the receiver is established, the second relative positioning being different than the first relative positioning.

19. The catheter system of claim 1 , further comprising a control cable that operatively couples the actuator system to the manipulable portion, the control cable receivable in the lumen of the catheter sheath,
wherein the ac

Assignees

• Kardium Inc

Inventors

• Moisa Saar
• Postma Marius J

Classifications

• A61B2018/0016

  Energy applicators arranged in a two- or three dimensional array · CPC title

• A61B2018/00172

  Connectors and adapters therefor · CPC title

• A61B5/0538

  invasively, e.g. using a catheter · CPC title

• A61B2018/1475

  Electrodes retractable in or deployable from a housing · CPC title

• A61B5/06

  Devices, other than using radiation, for detecting or locating foreign bodies {; Determining position of diagnostic devices within or on the body of the patient} · CPC title