RETRACTABLE SEPARATING SYSTEMS AND METHODS

• US 20160120562A1
• Filed: 01/15/2016
• Published: 05/05/2016
• Est. Priority Date: 12/22/2006
• Status: Active Grant

• Current Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Original Assignee: Spectranetics Corporation (Koninklijke Philips N.V.)
• Inventors: Taylor, Kevin D.
• Granted Patent: US 9,808,275 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 17/32053 Punch like cutting instruments, e.g. using a cylindrical or oval knife A61B17/326 takes precedence; trepans A61B17/1695; for use on the cornea A61F9/007
• CPC Class Codes: A61B 17/320758 with a rotating cutting instrument, e.g. motor driven A61B17/320725, A61B17/32075 and A61B17/320783 take precedence; for removing intra-ocular material A61F9/00763; endoscopic rotatable cutting instruments A61B17/32002
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/320024 Morcellators, e.g. having a hollow cutting tube with an annular cutter for morcellating and removing tissue
• CPC Class Codes: A61B 2017/320741 for stripping the intima or the internal plaque from a blood vessel, e.g. for endarterectomy
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61N 1/056 Transvascular endocardial electrode systems
• CPC Class Codes: A61N 2001/0578 having means for removal or extraction

Abstract

A method for detaching an object from a patient includes providing a tool having a sheath, and a separating assembly operably coupled to a distal end of the sheath. The separating assembly includes a separator moveably coupled to a tip via a threadable connection. The separating assembly is placed near patient tissue that is attached to the object, the sheath is rotated to move the separator distal to the tip, and the separator is applied to the patient tissue that is attached to the object, so as to separate the tissue. A separating system includes a sheath, and a separator threadably coupled with a distal end of the sheath. The separator is adapted to switch between a first configuration where a separating mechanism is deployed, and a second configuration where the separating mechanism is undeployed.

Claims

1-31. -31. (canceled)

32. A separating system for detaching a pacing lead from a patient, comprising:

a sheath having a proximal end and a distal end;

a handle coupled with the proximal end of the sheath, the handle being configured to be manipulated by an operator to rotate the sheath; and

a separating assembly coupled with the distal end of the sheath, the separating assembly comprising a cutter having a distal cutting edge, the separating assembly further comprising an outer band having a blunt distal end, wherein at least a portion of the outer band is disposed external and coaxial to the cutter, wherein the outer band and the cutter are coupled via a slot and key configuration, thereby allowing relative rotational movement of the outer band and the cutter, wherein one of the cutter and the outer band comprises a channel of the slot and key configuration in its circumference, wherein the channel includes a first end, a second end, and a length, wherein the length of the channel extends between the first end and the second end for less than 360 degrees the circumference of the one of the cutter and the outer band;

wherein each of the sheath, the outer band, and the cutter are configured for placement over the pacing lead;

wherein the slot and key configuration of the separating assembly is adapted to switch between a deployed configuration where the distal cutting edge of the cutter is exposed in response to manipulation of the handle and rotation of the sheath in a first direction and an undeployed configuration where the distal cutting edge of the cutter is proximal of the blunt distal end of the outer band in response to manipulation of the handle and rotation of the sheath in a second direction opposite the first direction.

33. The separating system according to claim 32, wherein the cutter and the outer band are configured for relative rotational movement via the slot and key configuration, wherein at least a portion of the channel is aligned at an angle offset from a central longitudinal axis of the cutter.

34. The separating system according to claim 33, wherein the other of the cutter and the outer band comprises a key of the slot and key configuration, and wherein the key is movably received in the channel to facilitate switching between the deployed configuration and the undeployed configuration.

35. The separating system according to claim 32, wherein the other of the cutter and the outer band comprises a key of the slot and key configuration, and wherein the key is movably received in the channel.

36. The separating system according to claim 32, wherein in the deployed configuration the distal cutting edge of the cutter extends past the outer band a distance in the range from about 0.5 mm to about 3 mm.

37. The separating system according to claim 32, wherein the distal cutting edge includes a plurality of serrations.

38. The separating system according to claim 32, wherein the distal end of the sheath is fixed with the cutter.

39. A separating system for detaching an object from a patient, comprising:

a sheath having a proximal end and a distal end;

a handle coupled with the proximal end of the sheath, the handle being configured to be manipulated by an operator to rotate the sheath; and

a separating assembly coupled with the distal end of the sheath, the separating assembly comprising an outer band having a blunt distal edge, the separating assembly further comprising a cutter having a distal cutting edge and a portion that is coaxial with the outer band;

wherein the cutter and the outer band are coupled via a slot and key configuration, thereby allowing relative rotational movement of the outer band and the cutter, wherein one of the cutter and the outer band comprises a channel of the slot and key configuration in its circumference, wherein the channel includes a first end, a second end, and a length, wherein the length of the channel extends between the first end and the second end for less than 360 degrees the circumference; and

wherein the slot and key configuration facilitates switching between a deployed configuration where a portion of the cutter is exposed and an undeployed configuration where the portion of the cutter is unexposed.

40. The separating system according to claim 39, wherein the cutter and the outer band are configured for relative rotational movement via the slot and key configuration, wherein at least a portion of the channel is aligned at an angle offset from a central longitudinal axis of the cutter.

41. The separating system according to claim 40, wherein the other of the cutter and the outer band comprises a key of the slot and key configuration, and wherein the key is movably received in the channel to facilitate switching between the deployed configuration and the undeployed configuration.

42. The separating system according to claim 39, wherein the other of the cutter and the outer band comprises a key of the slot and key configuration, and wherein the key is movably received in the channel.

43. The separating system according to claim 39, wherein in the deployed configuration the distal cutting edge of the cutter extends past the outer band a distance in the range from about 0.5 mm to about 3 mm.

44. The separating system according to claim 39, wherein the distal cutting edge includes a plurality of serrations.

45. The separating system according to claim 39, wherein the distal end of the sheath is fixed with the cutter.

47. The separating system according to claim 45, wherein the cutter and the outer band are configured for relative rotational movement via the slot and key configuration, wherein at least a portion of the channel is aligned at an angle offset from a central longitudinal axis of the cutter.

48. The separating system according to claim 47, wherein the outer band comprises a key of the slot and key configuration, and wherein the key is movably received in the channel to facilitate switching between the deployed configuration and the undeployed configuration.

49. The separating system according to claim 45, wherein in the deployed configuration the distal cutting edge of the cutter extends past the outer band a distance in the range from about 0.5 mm to about 3 mm.

50. The separating system according to claim 45, wherein the distal cutting edge includes a plurality of serrations.

51. The separating system according to claim 45, wherein the distal end of the sheath is fixed with the cutter.

46. A separating system for detaching a pacing lead from a patient, comprising:

a sheath having a proximal end and a distal end;

a handle coupled with the proximal end of the sheath, the handle being configured to be manipulated by an operator to rotate the sheath; and

a separating assembly coupled with the distal end of the sheath, the separating assembly comprising an outer band having a blunt distal end that is configured without a cutting edge, and the separating assembly further comprising a cutter having a distal cutting edge and disposed at least partially within the outer band, wherein the outer band and the cutter are coupled via a slot and key configuration, thereby allowing relative rotational movement of the outer band and the cutter, wherein the cutter comprises a channel of the slot and key configuration in its circumference, wherein the channel includes a first end, a second end, and a length, wherein the length of the channel extends between the first end and the second end for less than 360 degrees the circumference of the cutter;

wherein each of the sheath, the outer band, and the cutter are configured for placement over the pacing lead; and

wherein the slot and key configuration of the separating assembly allows the separating assembly to switch between a deployed configuration where the distal cutting edge of the cutter is exposed distally past the blunt distal end of the outer band in response to manipulation of the handle and rotation of the sheath in a first direction and an undeployed configuration where the distal cutting edge of the cutter is proximal of the blunt distal end of the outer band in response to manipulation of the handle and rotation of the sheath in a second direction opposite the first direction.