INJECTION DEVICE

• US 20100174162A1
• Filed: 01/05/2010
• Published: 07/08/2010
• Est. Priority Date: 11/25/2002
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed (Boston Scientific Corporation)
• Inventors: Stein, Alan, Gough, Edward J.
• Granted Patent: US 8,545,478 B2
• Time in Patent Office: Days
• US Class Current: 600/341
• CPC Class Codes: A61B 17/00491 Surgical glue applicators surgical adhesives A61L24/00; two-component delivery syringes A61M5/19
• CPC Class Codes: A61B 2017/00269 endoscopic mucosal resection EMR
• CPC Class Codes: A61B 5/14546 for measuring analytes not otherwise provided for, e.g. ions, cytochromes
• CPC Class Codes: A61B 5/1459 invasive, e.g. introduced into the body by a catheter A61B5/1464 takes precedence
• CPC Class Codes: A61B 5/6848 Needles
• 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 25/0084 being one or more injection needles

Abstract

An injection device for use with tissue of a mammalian body comprising a first tubular member and a second tubular member slidably disposed in the first tubular member. The first and second tubular members have respective proximal and distal extremities. The distal extremity of the second tubular member is provided with a needle that is extendable from the distal extremity of the first tubular member. The proximal extremity of the second tubular member is lockable relative to the proximal extremity of the first tubular member. The second tubular member has a column strength when locked within the first tubular member for limiting retraction of the second tubular member relative to the first tubular member during puncture of the tissue by the needle.

Claims

1-15. -15. (canceled)

16. An injection device for use with an injectable material comprising a syringe, a needle and a pressure indicator for connecting the needle to the syringe and monitoring the pressure of the injectable material.

17. The device of claim 16 wherein the pressure indicator includes a springloaded pressure indicator.

18. The device of claim 16 wherein the pressure indicator includes a flexible membrane pressure indicator.

35. The injection device of claim 16, wherein the pressure indicator comprises a body having a proximal end, a distal end and a fluid passageway extending longitudinally therethrough, wherein the proximal end of the body comprises a proximal connector for cooperatively coupling with a connector of the syringe, and wherein the distal end of the body comprises a distal connector for cooperatively coupling with a connector of the needle.

19. An injection device for use with an injectable material comprising a syringe provided with a barrel forming a chamber adapted to receive the injectable material, a needle, a plunger, and a pressure indicator coupled to the syringe for monitoring the pressure of the injectable material, wherein the pressure indicator includes a clutch carried by the plunger.

20. The device of claim 19 wherein the pressure indicator includes a springloaded pressure indicator disposed between the syringe and the needle.

21. The device of claim 19 wherein the pressure indicator includes a flexible membrane pressure indicator disposed between the syringe and the needle.

36. The injection device of claim 19, wherein the plunger threadedly engages the barrel.

37. The injection device of claim 36, further comprising a twist knob for rotating the plunger relative to the barrel such that the plunger is advanced relative to the barrel.

38. The injection device of claim 37, wherein the clutch is positioned between the twist knob and the plunger, and wherein the clutch releases when the torque on the twist knob exceeds a predetermined amount such that further twisting of the knob does not further rotate and advance the plunger relative to the barrel.

22. (canceled)

23. The device of claim 22 wherein the plunger is externally threaded.

24. A screw-type syringe for use with an injectable material comprising a barrel forming a chamber adapted for holding the injectable material, a plunger threadedly engaging the barrel, a mixer carried by the plunger and extending forwardly of the plunger into the chamber for stirring the material as the plunger is rotated relative to the barrel.

25. The syringe of claim 24 wherein the barrel has a forward wall, the plunger having a spring for urging the mixer against the forward wall.

26. The syringe of claim 25 wherein the plunger is provided with a recess for receiving at least a portion of the mixer, the spring being disposed in the recess and engaging the mixer.

27. The syringe of claim 24 wherein the mixer is U-shaped.

39. The screw-type syringe of claim 24, wherein the mixer is off-center relative to a longitudinal axis of the plunger.

40. The screw-type syringe of claim 24, wherein the mixer comprises a rod-shaped mixing member that is off-center relative to a longitudinal axis of the plunger.

41. The screw-type syringe of claim 26, wherein the syringe comprises a plurality of the recesses and wherein a spring is disposed in each recess that engages the mixer.

42. The screw-type syringe of claim 26, wherein the mixer is slidably disposed within the recess, wherein a proximal portion of the mixer seats within the recess and engages the spring, wherein a distal portion of the mixer extends into the chamber, and wherein the spring retains the mixer against the forward wall during advancement and retraction of the plunger relative to the barrel.

43. The screw-type syringe of claim 26, comprising a seal in the recess for inhibiting injectable material from entering the recess.

44. The screw-type syringe of claim 26, wherein the recess is off-center relative to a longitudinal axis of the plunger.

45. The syringe of claim 24, wherein the mixer comprises a plurality of legs that engage the plunger.

46. The syringe of claim 45, wherein the mixer comprises an oblong member joined to the legs.

28. A method for operating a medical device having proximal and distal extremities and a first tubular member slidably disposed in a passageway of a second tubular member and a reservoir of a solution of a biocompatible composition and a biocompatible solvent coupled to the first tubular member during a procedure for treating a mammalian body comprising the steps of inserting the distal extremity of the assembly into the body, introducing the solution through the first tubular member to treat the body, withdrawing the first tubular member from the second tubular member while the second tubular member remains at least partially disposed in the body, cleaning the passageway of the second tubular member, returning the first tubular member to the passageway of the second tubular member and continuing the treatment of the body.

29. The method of claim 28 wherein the cleaning step includes flushing the passageway of the second tubular member with a fluid.

30. The method of claim 28 for use with an elongate probe member having a passage and wherein the inserting step includes introducing the elongate probe member into the body and inserting the first and second tubular members into the body by means of the passage of the elongate probe member.

31. A method for treating tissue of a mammalian body with a needle having proximal and distal extremities and at least one optical element extending in a passageway from the proximal extremity to the distal extremity of the needle comprising the steps of inserting the distal extremity of the needle into the tissue and determining the type of tissue with the at least one optical element.

32. The method of claim 31 wherein the determining step includes interrogating the tissue with the at least one optical element to detect the presence of myoglobin or hemoglobin.

33. The method of claim 31 wherein the determining step includes interrogating the tissue with the at least one optical element to determine the amount of oxygen saturation in the tissue.

34. The method of claim 31 wherein the determining step includes supplying light to the at least one optical element and thus the tissue and monitoring the light reflected back by the tissue.