Medical systems and related methods

• US 8,790,359 B2
• Filed: 05/18/2007
• Issued: 07/29/2014
• Est. Priority Date: 10/05/1999
• Status: Expired due to Fees

• Current Assignee: Cybersonics, Inc
• Original Assignee: Cybersonics, Inc
• Inventors: Rabiner, Robert, Hare, Bradley A.
• Primary Examiner(s): HOLWERDA, KATHLEEN SONNETT
• Application Number:
  US11/750,829
• Publication Number:
  US 20070225619A1
• Time in Patent Office: 2,629 Days
• Field of Search: 606/127, 606/128, 606/159, 606166-185, 606/169, 606/171, 606/180, 606/2.5, 604/22, 601/2, 601/3, 736/32, 73640-642, 433/86, 433/118, 433/119, 600437-439, 600/449, 600/459, 600/462, 600/463
• US Class Current: 606/169
• CPC Class Codes: A61B 17/22004 using mechanical vibrations, e.g. ultrasonic shock waves A61B17/225 takes precedence
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 2017/00137 Details of operation mode
• CPC Class Codes: A61B 2017/00274 Prostate operation, e.g. prostatectomy, turp, bhp treatment
• CPC Class Codes: A61B 2017/00778 Operations on blood vessels A61B2017/22097, A61B2017/320741 take precedence
• CPC Class Codes: A61B 2017/22007 Cavitation or pseudocavitation, i.e. creation of gas bubbles generating a secondary shock wave when collapsing
• CPC Class Codes: A61B 2017/22008 used or promoted
• CPC Class Codes: A61B 2017/22015 with details of the transmission member
• CPC Class Codes: A61B 2017/22018 segmented along its length
• CPC Class Codes: A61B 2017/22028 arrays, e.g. phased arrays
• CPC Class Codes: A61B 2017/22051 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation A61B2017/22048, A61B2017/3486 take precedence
• CPC Class Codes: A61B 2017/22081 Treatment of vulnerable plaque
• CPC Class Codes: A61B 2017/32007 with suction or vacuum means
• CPC Class Codes: A61B 2017/320084 Irrigation sleeves
• CPC Class Codes: A61B 2017/320089 node location
• CPC Class Codes: A61B 2018/00547 Prostate
• CPC Class Codes: A61B 2018/00982 combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2217/007 with irrigation system
• CPC Class Codes: A61M 1/85 : with gas or fluid supply means, e.g. for supplying rinsing fluids or anticoagulants for negative pressure wound therapy A61M1/92, A61M1/94; combined with tracheal tubes A61M16/0463; dental instruments with combined rinsing and aspirating A61C17/0208
• CPC Class Codes: A61N 7/022 : intracavitary

Abstract

A medical system includes a sheath and an acoustic reflective element that is capable of amplifying acoustic energy. Methods of using a medical system are also provided herein.

Claims

1. A medical system for removal of occlusions in blood vessels, the medical system comprising:

a flexible ultrasonic probe, the flexible ultrasonic probe having a proximal probe end and distal probe end, wherein the flexible ultrasonic probe has a plurality of nodes and a plurality of anti-nodes of transverse motion configured to provide transverse vibration; and

a flexible sheath substantially surrounding the flexible ultrasonic probe having a proximal sheath end and a closed distal sheath end, the flexible sheath defining at least one fenestration located proximate the closed distal sheath end, the at least one fenestration having a proximal fenestration end and a distal fenestration end, wherein the distal probe end of the flexible ultrasonic probe is distal relative to the distal fenestration end such that the probe is configured to side fire cavitation energy.

2. The medical system of claim 1, wherein the flexible sheath defines a plurality of fenestrations.

3. The medical device of claim 1, wherein the flexible sheath is associated with a balloon catheter.

4. The medical device of claim 1, wherein the flexible ultrasonic probe is sized for placement in the vasculature of a patient.

5. The medical system of claim 1, wherein the flexible ultrasonic probe is configured to generate a plurality of anti-nodes along a longitudinal axis of the flexible ultrasonic probe when the flexible ultrasonic probe is vibrated at a frequency of about 20 kHz to about 80 kHz.

6. The medical system of claim 1, wherein the at least one fenestration is arcuate.

7. The medical system of claim 1, wherein the at least one fenestration is a single fenestration.

8. The medical system of claim 1, wherein the distal probe end is substantially contained within the sheath.

9. A medical system for removal of occlusions in blood vessels, the medical system comprising:

a flexible ultrasonic probe, the flexible ultrasonic probe having a proximal probe end and a distal probe end, wherein the flexible ultrasonic probe provides transverse vibration; and

a flexible sheath substantially surrounding the flexible ultrasonic probe, the flexible sheath defining at least one fenestration proximate a distal closed end of the flexible sheath, the at least one fenestration having a proximal end and a distal end, wherein the distal probe end of the flexible ultrasonic probe is positioned distally relative to the distal end of the at least one fenestration.

10. The medical system of claim 9, wherein the transverse vibration is emitted by the flexible ultrasonic probe through the at least one fenestration defined by the sheath when the flexible ultrasonic probe is vibrated.

11. The medical system of claim 9, wherein the medical system comprises a plurality of fenestrations.

12. The medical system of claim 11, wherein each of the plurality of fenestrations are positioned proximate the distal closed end of the flexible sheath.

13. The medical system of claim 9, wherein a portion of the flexible ultrasonic probe is disposed adjacent the at least one fenestration of the sheath.

14. The medical system of claim 9, further comprising a flexible outer sheath that surrounds at least a portion of the flexible sheath, the flexible outer sheath and the flexible sheath being axially moveable relative to one another.

15. The medical system of claim 9, wherein the distal probe end is retained within the sheath when vibrating in a transverse mode.

16. The medical system of claim 9, wherein the flexible ultrasonic probe is configured to generate a plurality of anti-nodes along a longitudinal axis of the ultrasonic probe when the flexible ultrasonic probe is vibrated at a frequency of about 20 kHz to about 80 kHz.

17. A medical system for removal of occlusions in blood vessels, the medical system comprising:

an ultrasonic probe utilizing transverse vibration, the ultrasonic probe having a plurality of nodes and a plurality of anti-nodes of transverse motion;

a sheath having a proximal end and a closed distal end, the sheath defining a lumen configured to receive and substantially surround the ultrasonic probe, the sheath having a single fenestration proximate the closed distal end of the sheath, wherein the single fenestration is configured to receive transverse vibration therethrough.

18. The medical system of claim 17, wherein the transverse vibration is emitted by the ultrasonic probe through the single fenestration defined by the sheath when the ultrasonic probe is vibrated within the lumen of the sheath.

19. The medical system of claim 17, wherein a distal end of the ultrasonic probe is housed within the sheath when vibrating in a transverse mode.

20. The medical system of claim 17, wherein the ultrasonic probe is disposed adjacent the single fenestration.