Biopsy and injection catheters

• US 20050222518A1
• Filed: 04/06/2004
• Published: 10/06/2005
• Est. Priority Date: 04/06/2004
• Status: Abandoned Application

• Current Assignee: Mytogen, Inc. (Astellas Pharma Incorporated)
• Original Assignee: Genocell, LLC
• Inventors: Dib, Nabil
• Application Number:
  US10/820,183
• Publication Number:
  US 20050222518A1
• Time in Patent Office: Days
• US Class Current: 600/562
• CPC Class Codes: A61B 10/0233 Pointed or sharp biopsy instruments
• CPC Class Codes: A61B 2010/0208 Biopsy devices with actuators, e.g. with triggered spring mechanisms
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61B 2034/2051 Electromagnetic tracking systems
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself
• CPC Class Codes: A61B 2090/397 electromagnetic other than visible, e.g. microwave
• CPC Class Codes: A61M 2025/0089 Single injection needle protruding axially, i.e. along the longitudinal axis of the catheter, from the distal tip
• CPC Class Codes: A61M 25/0067 characterised by the distal end, e.g. tips A61M25/0054, A61M25/04 take precedence; balloon catheters A61M25/10
• CPC Class Codes: A61M 25/0084 being one or more injection needles

Abstract

Medical devices are delineated that may include a needle, a catheter and a sheath. Such devices may be used to take a biopsy from a patient and/or inject fluid into a patient, particularly in the patient'"'"'s heart tissue. One or more ports may be located between the ends of the needle to facilitate the desired medical procedure. A relative motion restrictor may be included to restrict relative movement during needle deployment between the catheter and the sheath. Additionally, a driver may be employed to deploy the needle with one or more of a predefined force, acceleration and velocity to ease needle penetration.

Claims

1. A medical device for taking a biopsy of material, comprising:

a catheter having a catheter lumen with a proximal end and a distal end; and

a needle for selectively moving to extend from the distal end of the catheter lumen to a first position to take the biopsy and to a second position within the catheter lumen, said needle having a first port between the distal end of the needle and the proximal end of the needle for selectively opening and closing to take the biopsy of the material.

2. The medical device of claim 1 further including a sheath having a sheath lumen through which the catheter is selectively moved.

3. The medical device of claim 2 further including means for selectively restricting relative movement between the sheath and the catheter.

4. The medical device of claim 1 further including a driver for selectively moving the needle with one or more of a predefined force, a predefined acceleration and a predefined velocity to penetrate the material.

5. The medical device of claim 4 wherein the driver selectively rotates the needle.

6. The medical device of claim 1 further including a sensor on the device for providing signals for determining position of the device.

7. The medical device of claim 6 wherein the sensor is on the needle.

8. The medical device of claim 1 further including a second port in fluid communication with the first port to retrieve the biopsy material from the first port.

9. A medical device for injecting a fluid into a material, comprising:

a catheter having a catheter lumen with a proximal end and a distal end; and

a needle for selectively moving to extend from the distal end of the catheter lumen to a first position to inject the fluid into the material and to a second position within the catheter lumen, said needle having a first port between the distal end of the needle and the proximal end of the needle for selectively opening to inject the fluid into the material and closing.

10. The medical device of claim 9 further including a sheath having a sheath lumen through which the catheter is selectively moved.

11. The medical device of claim 10 further including means for selectively restricting relative movement between the sheath and the catheter.

12. The medical device of claim 9 further including a driver for selectively moving the needle with one or more of a predefined force, a predefined acceleration and a predefined velocity to penetrate the material.

13. The medical device of claim 12 wherein the driver selectively rotates the needle.

14. The medical device of claim 9 further including a sensor on the device for providing signals for determining position of the device.

15. The medical device of claim 14 wherein the sensor is on the needle.

16. The medical device of claim 9 further including a second port in fluid communication with the first port and a supply of the fluid.

17. A medical device for taking a biopsy of material, comprising:

a catheter having a catheter lumen with a proximal end and a distal end;

a needle for selectively moving to extend from the distal end of the catheter lumen to a first position to take the biopsy and to a second position within the catheter lumen;

a sheath having a sheath lumen through which the catheter is selectively moved; and

a driver for selectively moving the needle with one or more of a predefined force, a predefined acceleration and a predefined velocity to penetrate the material.

18. The medical device of claim 17 further including means for selectively restricting relative movement between the sheath and the catheter.

19. A medical device for injecting a fluid into a material, comprising:

a catheter having a catheter lumen with a proximal end and a distal end;

a needle for selectively moving to extend from the distal end of the catheter lumen to a first position to inject the fluid into the material and to a second position within the catheter lumen;

a sheath having a sheath lumen through which the catheter is selectively moved; and

a driver for selectively moving the needle with one or more of a predefined force, a predefined acceleration and a predefined velocity to penetrate the material.

20. The medical device of claim 19 further including means for selectively restricting relative movement between the sheath and the catheter.