Technique to confirm correct positioning with respect to arterial wall

• US 20040243007A1
• Filed: 03/12/2004
• Published: 12/02/2004
• Est. Priority Date: 01/12/2001
• Status: Active Grant

• Current Assignee: St. Jude Medical Coordination Center BVBA (Abbott Laboratories Incorporated)
• Original Assignee: Radi Medical Systems AB (Abbott Laboratories Incorporated)
• Inventors: Tenerz, Lars, Akerfeldt, Dan
• Granted Patent: US 7,285,097 B2
• Time in Patent Office: Days
• US Class Current: 600/486
• CPC Class Codes: A61B 17/0057 Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 2017/00022 Sensing or detecting at the treatment site
• CPC Class Codes: A61B 2017/00659 located only on one side of the opening
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0496 for tensioning sutures
• CPC Class Codes: A61B 2090/064 for measuring force, pressure or mechanical tension

Abstract

Methods and systems related to sealing punctures in blood vessels (such as following an angio or PTCA procedure) are disclosed. The invention provides a system to sense the location of a distal portion of a member within a body. The system includes an introducer portion having a distal end adapted to be placed within a body and a pressure sensor. The pressure sensor is in fluid communication with the distal end and is adapted to provide a pulsation which can be sensed by an operator when the distal end is placed within a pulsating portion of the body.

Claims

1. A system to sense the location of a distal portion of a member within a body, the system comprising:

an introducer portion having a lumen and a distal end adapted to be placed within a body, the distal end having an opening lying in a plane perpendicular to a longitudinal axis of the lumen; and

a pressure sensor, in fluid communication with the distal end, adapted to provide a pulsation which can be sensed by an operator when the distal end is placed within a pulsating portion of the body.

2. A system as set forth in claim 1, wherein the pulsation is visually displayed on a display.

3. A system as set forth in claim 1, wherein the pulsation is visually displayed within a cavity.

4. A system as set forth in claim 3, wherein the cavity is a capillary tube.

5. A system as set forth in claim 1, wherein the distal end of the introducer portion is adapted to be positionable within a blood vessel.

6. A system as set forth in claim 1, wherein the pulsation is visually displayed within a cavity which is not vented to atmosphere.

7. A system as set forth in claim 1, wherein the system comprises at least two cavities.

8. A system as set forth in claim 1, wherein the pulsation causes a member to vibrate such that the vibration of the member can be sensed by touch.

9. A system as set forth in claim 1, wherein the pulsation causes a member to vibrate such that the vibration can be visually observed.

10. A system as set forth in claim 1, wherein the pressure sensor comprises a pressure transducer.

11. A system as set forth in claim 1, wherein the system further comprises a core pin with a channel to provide said fluid communication.

12. A system as set forth in claim 11, wherein the introducer portion further comprises a side hole near a distal end of the introducer portion.

13. A system as set forth in claim 11, wherein the core pin further comprises an opening at an entrance to the channel.

14. A system as set forth in claim 13, wherein the opening lies in a plane perpendicular to the longitudinal axis of the lumen.

15. A system as set forth in claim 13, wherein the opening lies in a plane parallel to the longitudinal axis of the lumen.

16. A system to sense the location of a distal portion of a member within a body, the system comprising:

an introducer portion having a lumen and a distal end adapted to be placed within a body;

a core pin inserted in the introducer portion such that a distal end of the core pin passes beyond the distal end of the introducer portion, the core pin having a portion of reduced diameter such that a channel is formed between an inner wall portion of the introducer portion and an outer portion of the core pin, the channel having an entrance distal from a distal end of the introducer portion; and

a pressure sensor, in fluid communication with the entrance via the channel, adapted to provide a pulsation which can be sensed by an operator when the entrance is placed within a pulsating portion of the body.

17. A system to sense the location of a distal portion of a member within a body, the system comprising:

an introducer portion having a lumen and a distal end adapted to be placed within a body;

a core pin inserted in the introducer portion such that a distal end of the core pin passes beyond the distal end of the introducer portion, the core pin having a portion of reduced diameter such that a channel is formed between an inner wall portion of the introducer portion and an outer portion of the core pin, the channel having an entrance proximal from the distal end of the introducer portion via an opening in the introducer portion; and

a pressure sensor, in fluid communication with the entrance via the channel, adapted to provide a pulsation which can be sensed by an operator when the entrance is placed within a pulsating portion of the body.