CA2343894A1 - Resposable electrosurgical instrument - Google Patents
Resposable electrosurgical instrument Download PDFInfo
- Publication number
- CA2343894A1 CA2343894A1 CA002343894A CA2343894A CA2343894A1 CA 2343894 A1 CA2343894 A1 CA 2343894A1 CA 002343894 A CA002343894 A CA 002343894A CA 2343894 A CA2343894 A CA 2343894A CA 2343894 A1 CA2343894 A1 CA 2343894A1
- Authority
- CA
- Canada
- Prior art keywords
- shaft
- tip
- end portion
- distal end
- proximal end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000008878 coupling Effects 0.000 claims abstract 16
- 238000010168 coupling process Methods 0.000 claims abstract 16
- 238000005859 coupling reaction Methods 0.000 claims abstract 16
- 230000000295 complement effect Effects 0.000 claims 8
- 238000007789 sealing Methods 0.000 claims 2
- 230000013011 mating Effects 0.000 claims 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1402—Probes for open surgery
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00172—Connectors and adapters therefor
- A61B2018/00178—Electrical connectors
Abstract
An improved electrosurgical instrument is disclosed and claims which includes a reusable electrode shaft (14), a disposable tip (16) and a novel, insulated coupling (18) for removably connecting the disposable tip to the electrode shaft. The present invention provides several advantages and features. The coupling provides ease in connecting the disposable tip to the reusable electrode shaft in an operating room environment. Once the tip is connected to the shaft, the coupling provides a rigid and secure connection between the tip and shaft, such that the coupled tip/shaft assembly feels to the surgeon like a single, unitary instrument. In addition, the coupling ensures a good electrical connection between the tip and the shaft prevents the tip from inadvertently or accidentally becoming separated from the reusable electrode shaft, and maintains the position of the tip relative to the shaft by preventing the tip from rotating relative to the holder.
Claims (17)
1. An improved electrosurgical instrument comprising:
an elongated electrically conductive shaft having proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;
an electrosurgical tip having a proximal end portion, an intermediate body portion and a distal end portion; and means for selectively and securely coupling the tip to the distal end portion of the shaft so as to prevent longitudinal and rotational movement of the electrosurgical tip relative to the shaft, the means substantially continually preventing rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.
an elongated electrically conductive shaft having proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;
an electrosurgical tip having a proximal end portion, an intermediate body portion and a distal end portion; and means for selectively and securely coupling the tip to the distal end portion of the shaft so as to prevent longitudinal and rotational movement of the electrosurgical tip relative to the shaft, the means substantially continually preventing rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.
2. The electrosurgical instrument of claim 1 wherein the coupling means comprises:
a first means for aligning and maintaining the relative positions of the shaft and the tip formed in the distal end portion of the shaft; and a second means for aligning and maintaining the relative positions of the shaft and the tip formed in the proximal end portion of the tip, wherein the first and second aligning means are configured so as to mate with one an other in complementary engagement.
a first means for aligning and maintaining the relative positions of the shaft and the tip formed in the distal end portion of the shaft; and a second means for aligning and maintaining the relative positions of the shaft and the tip formed in the proximal end portion of the tip, wherein the first and second aligning means are configured so as to mate with one an other in complementary engagement.
3. The electrosurgical instrument of claim 2 wherein said first and second aligning means comprise complementary keyways.
4. The electrosurgical instrument of claim 3 wherein the coupling means further comprises a substantially rigid, generally cylindrical sleeve having a proximal end, an intermediate body portion, and a distal end, wherein the distal end of the sleeve surrounds and is mechanically coupled to the proximal end portion of the tip.
5. The electrosurgical instrument of claim 4 wherein the coupling means further comprises:
a first means for selectively and removably fastening the sleeve to the shaft formed on the distal end portion of the shaft adjacent to and spaced inwardly from said first aligning means; and a second means for selectively and removably fastening the sleeve to the shaft formed in the proximal end of the sleeve, wherein the first and second means are configured so as to mate with one another in complementary engagement.
a first means for selectively and removably fastening the sleeve to the shaft formed on the distal end portion of the shaft adjacent to and spaced inwardly from said first aligning means; and a second means for selectively and removably fastening the sleeve to the shaft formed in the proximal end of the sleeve, wherein the first and second means are configured so as to mate with one another in complementary engagement.
6. The electrosurgical instrument of claim 5, wherein said first fastening means comprises external threads formed on the distal end portion of the shaft, wherein the second fastening means comprises internal threads formed within the proximal end of the sleeve, and wherein the external and internal threads are complementary of one another so as to permit selective threaded engagement and disengagement of one another.
7. The electrosurgical instrument of claim 1, 2, 3, 4, 5 or 6 further comprising means for sealing and electrically insulating the coupling means.
8. The electrosurgical instrument of claim 7, wherein the sealing and insulating means comprises an elongated, generally tubular, electrically insulative and flexibly resilient sheath positioned over and around the coupling means in a substantially close tolerance, press-fit relationship.
9. An improved electrosurgical instrument comprising:
an elongated electrically conductive shaft having proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;
an electrosurgical tip having a proximal end portion, an intermediate body portion and a distal end portion; and a coupling wherein the tip is rigidly secured to the distal end portion of the shaft so as to prevent both longitudinal and rotational movement of the tip relative to the shaft, the coupling substantially continually preventing rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.
an elongated electrically conductive shaft having proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;
an electrosurgical tip having a proximal end portion, an intermediate body portion and a distal end portion; and a coupling wherein the tip is rigidly secured to the distal end portion of the shaft so as to prevent both longitudinal and rotational movement of the tip relative to the shaft, the coupling substantially continually preventing rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.
10. The electrosurgical instrument of claim 9 wherein the coupling further comprises:
a first keyway formed in the distal end portion of the shaft; and a second keyway formed in the proximal end portion of the tip, wherein the first and second keyways are configured so as to mate with one another in complementary engagement.
a first keyway formed in the distal end portion of the shaft; and a second keyway formed in the proximal end portion of the tip, wherein the first and second keyways are configured so as to mate with one another in complementary engagement.
11. The electrosurgical instrument of claim 10 wherein the coupling further comprises a substantially rigid, generally cylindrical sleeve having a proximal end, an intermediate body portion and a distal end, wherein the distal end of the sleeve surrounds and is mechanically coupled to the proximal end portion of the tip.
12. The electrosurgical instrument of claim 11 wherein the coupling further comprises:
an external threaded portion formed about the distal end of the shaft adjacent to and spaced inwardly from the first keyway; and an internal threaded portion formed within the proximal end portion of the sleeve, wherein the external and internal threaded portions are configured to mate with one another in complementary engagement.
an external threaded portion formed about the distal end of the shaft adjacent to and spaced inwardly from the first keyway; and an internal threaded portion formed within the proximal end portion of the sleeve, wherein the external and internal threaded portions are configured to mate with one another in complementary engagement.
13. The electrosurgical instrument of claim 12 further comprising an elongated, generally tubular, electrically insulative and flexibly resilient sheath positioned over and around the coupling in a substantially close tolerance, press-fit relationship.
14. An improved electrosurgical instrument comprising:
an elongated electrically conductive shaft having a proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;
and a disposable electrosurgical tip assembly, wherein the tip assembly is selectively and removably connected to the distal end portion of the shaft in such a manner that the tip assembly is rigidly secured to the shaft so as to prevent both longitudinal and rotational movement of the tip relative to the shaft, and the tip assembly is adapted to substantially continually prevent rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.
an elongated electrically conductive shaft having a proximal end portion, an intermediate body portion, and a distal end portion, wherein the intermediate body portion is covered with an electrically insulative material;
and a disposable electrosurgical tip assembly, wherein the tip assembly is selectively and removably connected to the distal end portion of the shaft in such a manner that the tip assembly is rigidly secured to the shaft so as to prevent both longitudinal and rotational movement of the tip relative to the shaft, and the tip assembly is adapted to substantially continually prevent rotational movement of the tip relative to the shaft until the tip and the shaft are substantially disengaged one from the other.
15. The improved electrosurgical instrument of claim 14 wherein the tip assembly comprises:
an electrically conductive electrosurgical tip having a proximal end portion, an intermediate portion and an exposed working surface at its distal end, wherein the intermediate portion is covered with an electrically insulative material;
an elongated substantially rigid, generally cylindrical sleeve having a proximal end portion, an intermediate body portion and a distal end portion, wherein the distal end portion of the sleeve surrounds and is mechanically coupled to the proximal end portion of the tip; and an elongated, generally tubular, electrically insulative and flexibly resilient sheath positioned over and around the sleeve and the proximal end portion of the tip in a substantially close tolerance, press-fit relationship.
an electrically conductive electrosurgical tip having a proximal end portion, an intermediate portion and an exposed working surface at its distal end, wherein the intermediate portion is covered with an electrically insulative material;
an elongated substantially rigid, generally cylindrical sleeve having a proximal end portion, an intermediate body portion and a distal end portion, wherein the distal end portion of the sleeve surrounds and is mechanically coupled to the proximal end portion of the tip; and an elongated, generally tubular, electrically insulative and flexibly resilient sheath positioned over and around the sleeve and the proximal end portion of the tip in a substantially close tolerance, press-fit relationship.
16. The improved electrosurgical instrument of claim 15 wherein the shaft further comprises a first keyway at its distal end, wherein the tip further comprises a second keyway formed in its proximal end, and wherein said first and second keyways are configured so as to mate with one an other in complementary engagement and thereby align the tip with the shaft and prevent rotation of the tip relative to the shaft.
17. The improved electrosurgical instrument of claim 16 wherein the shaft further comprises an external threaded portion formed about the distal end portion of the shaft proximate to and spaced inwardly from the distal end thereof, wherein the sleeve further comprises an internal threaded portion formed within the proximal end portion of the sleeve, and wherein the external and internal threaded portions are configured to mate with one another in complementary engagement and thereby maintain first and the second keyways in mating engagement and prevent longitudinal movement of the tip relative to the shaft.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/175,855 | 1998-10-20 | ||
| US09/175,855 US6090107A (en) | 1998-10-20 | 1998-10-20 | Resposable electrosurgical instrument |
| PCT/US1999/011640 WO2000022996A1 (en) | 1998-10-20 | 1999-05-26 | Resposable electrosurgical instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2343894A1 true CA2343894A1 (en) | 2000-04-27 |
| CA2343894C CA2343894C (en) | 2010-03-09 |
Family
ID=22641937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002343894A Expired - Lifetime CA2343894C (en) | 1998-10-20 | 1999-05-26 | Resposable electrosurgical instrument |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6090107A (en) |
| EP (1) | EP1123053B1 (en) |
| KR (1) | KR20010072149A (en) |
| CN (1) | CN1178628C (en) |
| AT (1) | ATE514388T1 (en) |
| AU (1) | AU746573B2 (en) |
| BR (1) | BR9914077A (en) |
| CA (1) | CA2343894C (en) |
| ES (1) | ES2366575T3 (en) |
| HK (1) | HK1036922A1 (en) |
| IL (1) | IL142402A0 (en) |
| NZ (1) | NZ508437A (en) |
| WO (1) | WO2000022996A1 (en) |
| ZA (1) | ZA200006935B (en) |
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1998
- 1998-10-20 US US09/175,855 patent/US6090107A/en not_active Expired - Lifetime
-
1999
- 1999-05-26 BR BR9914077-2A patent/BR9914077A/en not_active Application Discontinuation
- 1999-05-26 IL IL14240299A patent/IL142402A0/en unknown
- 1999-05-26 EP EP99925882A patent/EP1123053B1/en not_active Expired - Lifetime
- 1999-05-26 NZ NZ508437A patent/NZ508437A/en not_active IP Right Cessation
- 1999-05-26 CN CNB998083224A patent/CN1178628C/en not_active Expired - Lifetime
- 1999-05-26 ES ES99925882T patent/ES2366575T3/en not_active Expired - Lifetime
- 1999-05-26 AT AT99925882T patent/ATE514388T1/en not_active IP Right Cessation
- 1999-05-26 WO PCT/US1999/011640 patent/WO2000022996A1/en not_active Application Discontinuation
- 1999-05-26 KR KR1020017001343A patent/KR20010072149A/en not_active Application Discontinuation
- 1999-05-26 AU AU42083/99A patent/AU746573B2/en not_active Expired
- 1999-05-26 CA CA002343894A patent/CA2343894C/en not_active Expired - Lifetime
-
2000
- 2000-11-27 ZA ZA200006935A patent/ZA200006935B/en unknown
-
2001
- 2001-11-13 HK HK01107971A patent/HK1036922A1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| US6090107A (en) | 2000-07-18 |
| EP1123053A1 (en) | 2001-08-16 |
| ZA200006935B (en) | 2002-07-12 |
| KR20010072149A (en) | 2001-07-31 |
| AU4208399A (en) | 2000-05-08 |
| NZ508437A (en) | 2002-10-25 |
| AU746573B2 (en) | 2002-05-02 |
| CA2343894C (en) | 2010-03-09 |
| EP1123053B1 (en) | 2011-06-29 |
| BR9914077A (en) | 2001-06-12 |
| WO2000022996A1 (en) | 2000-04-27 |
| HK1036922A1 (en) | 2002-01-25 |
| ES2366575T3 (en) | 2011-10-21 |
| ATE514388T1 (en) | 2011-07-15 |
| EP1123053A4 (en) | 2003-02-05 |
| CN1178628C (en) | 2004-12-08 |
| IL142402A0 (en) | 2002-03-10 |
| CN1310595A (en) | 2001-08-29 |
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| EEER | Examination request | ||
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Effective date: 20190527 |