Cryoblation catheter handle

• US 20020188288A1
• Filed: 07/25/2002
• Published: 12/12/2002
• Est. Priority Date: 04/21/1999
• Status: Active Grant

• Current Assignee: Medtronic CryoCath LP (Medtronic Plc)
• Original Assignee: Domenic Santoianni, Marwan Abboud, Philippe Marchand
• Inventors: Abboud, Marwan, Marchand, Philippe, Santoianni, Domenic
• Granted Patent: US 6,746,445 B2
• Time in Patent Office: Days
• US Class Current: 606/21
• CPC Class Codes: A61B 18/02 by cooling, e.g. cryogenic techniques devices for cooling specific reflex points of the body within cell-life limits A61H39/06
• CPC Class Codes: A61B 2017/00292 mounted on or guided by flexible, e.g. catheter-like, means
• CPC Class Codes: A61B 2018/0212 using an instrument inserted into a body lumen, e.g. catheter
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence

Abstract

A cryocatheter system includes a first handle portion having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path; a second handle portion having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path; and a catheter having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path. The distal end of the first handle portion is matable with the proximal end of the second handle portion to place the respective first and second fluid flow paths of each handle portion in fluid communication; and the distal end of the second handle portion is matable with the proximal end of the catheter to place the respective first and second fluid flow paths of the second handle portion and the catheter in fluid communication.

Claims

1. A cryocatheter system comprising:

a first handle portion having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path;

a second handle portion having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path, wherein the distal end of the first handle portion is matable with the proximal end of the second handle portion to place the respective first and second fluid flow paths of each handle portion in fluid communication; and

a catheter having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path, wherein the distal end of the second handle portion is matable with the proximal end of the catheter to place the respective first and second fluid flow paths of the second handle portion and the catheter in fluid communication.

2. The cryocatheter of claim 1, further comprising a pressure sensor in communication with one of the first and second fluid flow paths.

3. The cryocatheter of claim 1, further comprising a blood detector in communication with one of the first and second fluid flow paths.

4. The cryocatheter of claim 1, wherein the first fluid flow path is coaxial with second fluid flow path.

5. The cryocatheter of claim 4, wherein the first fluid flow path is defined by a refrigerant supply tube and the second fluid flow path is defined by a fluid exhaust tube.

6. The cryocatheter of claim 5, wherein the refrigerant supply tube is disposed within the fluid exhaust tube.

7. The cryocatheter of claim 5, wherein the fluid exhaust tube is in fluid communication with a vacuum source.

8. The cryocatheter of claim 1, further comprising:

a first pull-wire disposed within the catheter, wherein the pull-wire has a proximal end that is slidably engaged with the second handle portion; and

a second pull-wire having a distal end that is slidably engaged with the first handle portion,

wherein the proximal end of the first pull-wire is engagable with the distal end of the second pull-wire.

9. The cryocatheter of claim 8, further comprising a bias element the axially biases the second pull-wire.

10. A cryocatheter system comprising:

a first handle portion having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path;

a second handle portion having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path, wherein the distal end of the first handle portion is matable with the proximal end of the second handle portion to place the respective first and second fluid flow paths of each handle portion in fluid communication;

a catheter having a proximal end, a distal end, a first fluid flow path, and a second fluid flow path, wherein the distal end of the second handle portion is matable with the proximal end of the catheter to place the respective first and second fluid flow paths of the second handle portion and the catheter in fluid communication;

a pressure sensor in communication with one of the first and second fluid flow paths; and

a blood detector in communication with one of the first and second fluid flow paths,

wherein the first fluid flow path is defined by a refrigerant supply tube and the second fluid flow path is defined by a fluid exhaust tube,

wherein the refrigerant supply tube is disposed within the fluid exhaust tube, and

wherein the fluid exhaust tube is in fluid communication with a vacuum source.

11. The cryocatheter of claim 10, further comprising:

a first pull-wire disposed within the catheter, wherein the pull-wire has a proximal end that is slidably engaged with the second handle portion; and

a second pull-wire having a distal end that is slidably engaged with the first handle portion,

wherein the proximal end of the first pull-wire is engagable with the distal end of the second pull-wire.

12. The cryocatheter of claim 11, further comprising a bias element the axially biases the second pull-wire.