WO2004073488A2 - System and method for connecting an electrosurgical instrument to a generator - Google Patents
System and method for connecting an electrosurgical instrument to a generator Download PDFInfo
- Publication number
- WO2004073488A2 WO2004073488A2 PCT/US2004/002961 US2004002961W WO2004073488A2 WO 2004073488 A2 WO2004073488 A2 WO 2004073488A2 US 2004002961 W US2004002961 W US 2004002961W WO 2004073488 A2 WO2004073488 A2 WO 2004073488A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connector
- fixed portion
- cap portion
- circuit board
- flexible circuit
- Prior art date
Links
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
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00172—Connectors and adapters therefor
- A61B2018/00178—Electrical connectors
-
- 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
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/0063—Sealing
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00696—Controlled or regulated parameters
- A61B2018/00702—Power or energy
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00791—Temperature
-
- 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
- A61B2018/00636—Sensing and controlling the application of energy
- A61B2018/00773—Sensed parameters
- A61B2018/00875—Resistance or impedance
-
- 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
- A61B2018/00988—Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter
Definitions
- the present disclosure relates to an electrosurgical instrument and more particularly, the present disclosure relates to a system and method for mechanically and electrically connecting a flexible circuit board of an electrosurgical instrument to a generator.
- the invention also includes a manufacturing method for simplifying electrosurgical connections from the instrument to the generator.
- Electrosurgical instruments are employed by surgeons to perform a variety of endoscopic or open surgical procedures for treating tissue including: cutting, coagulating, cauterizing, desiccating, sealing, and fusing.
- High frequency electrical power typically radio frequency (RF) power or energy, is produced by an electrosurgical generator and applied to the tissue by the electrosurgical instrument.
- RF radio frequency
- the electrosurgical instrument is operated and manipulated by the surgeon to perform the desired electrosurgical procedure.
- connection between the electrosurgical generator and the electrosurgical instrument is typically removable, such that a first electrosurgical instrument configured for performing a first type of surgical procedure may be disconnected from the generator and a second electrosurgical instrument configured for performing a second type of surgical procedure may be connected. It is advantageous to provide the electrosurgical instrument with a connector which provides a reliable and easily removable connection to the electrosurgical generator, and in addition, provides a reliable and easily removable connection between electrical components of the instrument and the generator.
- the present disclosure relates to a connector for electromechanically connecting an electrosurgical cable to a flexible circuit board of a surgical instrument.
- the connecter includes a fixed portion including a cavity defined therein, the fixed portion including a wire guide block having a series of wire slots defined therein, each of the wire slots being dimensioned to receive a respective conductive wire disposed within the electrosurgical cable; and a cap portion designed for selective, friction- fit engagement with the cavity of the fixed portion, the cap portion including a series of detents which define a corresponding series of slots therebetween for wedging the conductive wires of the cable against a series of corresponding terminal contacts disposed on the flexible circuit board.
- a method for connecting a flexible circuit board of a surgical instrument to a plurality of conducting wires from an electrosurgical cable.
- the method includes the steps of providing a fixed portion disposed within the electrosurgical instrument, the fixed portion including a cavity defined therein, the cavity including a wire guide block having a plurality of slots defined therein for retaining the corresponding plurality of conductive wires therein; providing a cap portion being dimensioned for selective engagement within the cavity of the fixed portion, the cap portion including a plurality of detents depending therefrom which define a plurality of wire slots thereto between dimensioned to receive the plurality of conductive wire therein; positioning the plurality of conductive wires within the corresponding slots of the wire guide block such that each of the conductive wires traverses the cavity and is generally aligned in vertical registry with a corresponding terminal of the flexible circuit board; aligning the cap portion for engagement with the fixed portion such that each one of the plurality of conductive wires is aligned for reception within a corresponding
- FIG. 1 is a schematic diagram of a connection between an electrosurgical instrument and an electrosurgical generator according to the present invention
- FIG. 2 is a schematic diagram of an end portion of an electrosurgical cable which connects to the electrosurgical instrument of FIG. 1 ;
- FIG. 3A is a top, first perspective view of a quick connector for use with a flexible circuit board in accordance with one embodiment of the present invention
- FIG. 3B is a top, second perspective view of the connector of FIG. 3A.
- FIG. 4 is a side view of the connector of FIGS. 3A and 3B shown in a closed position connecting the end portion of the cable of FIG. 1 2 to the flexible circuit board of the electrosurgical instrument.
- the electrosurgical system 10 includes an electrosurgical instrument 12 connected to an electrosurgical generator 14 by a cable 16.
- the cable 16 connects to the electrosurgical instrument 12 at a distal end 18 via connector 20.
- the electrosurgical instrument 12 is configured for performing at least one of a variety of surgical procedures on tissue such as: cutting, coagulating, cauterizating, desiccating, sealing, and fusing. It is envisioned that the instrument may be designed for either open surgery or endoscopic surgery.
- electrosurgical energy refers to any type of electrical energy which may be utilized for medical procedures.
- Cable 16 includes a plurality of electrically conductive wires 30a, 30b, 30c which are, electrically insulated from one another (e.g., encased in an insulating covering 32).
- the plurality of wires 30a-30c may be further encased in an insulating covering 31.
- the electrosurgical generator 14 supplies electrosurgical energy to the electrosurgical instrument typically in a high frequency range (e.g., a radio frequency range) which is applied to the patient's tissue via the electrosurgical instrument 12 for facilitating the surgical procedure being performed.
- the distal end 18 of the cable 16 is shown in greater detail.
- the plurality of wires 30a-30c are collectively insulated by a first insulation covering 31 and individually insulated by a second insulating covering 32.
- the first insulating covering 31 is stripped to expose the wires 30a- 30c and the second insulative coating 32 is stripped to further expose the conductive contacts 34a, 34b, 34c of each respective wire.
- a removable insulating cap 36 may be provided for protecting the conductive contacts 34a-34c when the cable 16 is not connected to the electrosurgical instrument 12.
- the plurality of wires 30a-30c are formed of a resilient material.
- the electrosurgical instrument 12 includes a flexible circuit board 302 (FCB 302) having a plurality of electrical contacts 304a, 304b and 304c (also referred to as traces, terminations or termination traces) for ultimate connection to the cable 16 via connector 20.
- the connector 20 is formed of a nonconductive material and includes a fixed portion 20a and a cap portion 20b.
- the fixed portion 20a is embedded within a cavity (not shown) disposed in the electrosurgical instrument 12, and includes top and bottom surfaces 430 and 440, respectively.
- Top surface 430 includes a cavity or notch 402 disposed therein which is dimensioned to receive cable 16 and wires 30 which will be will be discussed in more detail below.
- Bottom surface 440 is preferably dimensioned to engage within a corresponding cavity (not shown) in instrument 12. More particularly, bottom surface 440 may include one or more mechanical interfaces which engage (e.g., snap fit, press fit, etc.) a corresponding number of mechanical interfaces disposed within the cavity of instrument 12. As can be appreciated this facilitates the manufacturing process.
- cap portion 20b is dimensioned to engage the fixed portion 20a. More particularly, cap portion 20b includes a top portion 520 having a series of mechanical interfaces 502 (e.g., detents) which engage a corresponding series of mechanical interlocks or guides 404a-404c (see FIG. 3B) disposed within cavity 402. Alternatively, it is envisioned that the wires 30a-30c may simply be held in place by virtue of the compressive forces and corresponding abutting surfaces associated with mounting cap portion 20a and 20b.
- a series of mechanical interfaces 502 e.g., detents
- the wires 30a-30c may simply be held in place by virtue of the compressive forces and corresponding abutting surfaces associated with mounting cap portion 20a and 20b.
- Cap portion 20b also includes a series of electrical connectors 504a-504d disposed between adjacent mechanical interlocks 502 which are designed to contact the conductive contacts 34a-34c when cap portion 20b and fixed portion 20a are engaged (FIG. 4). This provides electrical continuity across the connector 20 which will be explained in more detail below.
- Fixed portion 20 may be provided with cut away portion 422, and/or top portion 520 may be provided with cut away portion 522 for allowing movement or slippage of the wires 30 and/or cable 16 at a proximal portion of the distal end 18 of the wires 30, such as when the cable 16 is pulled or pushed axially, twisted or bent, while transmittal of the motion to the conductive contacts 34a-34c is prevented, thus providing stress relief.
- the process of forming the wires or soldering the wires to 20b creates undesirable stresses on the wires and provides little tolerance for slippage or stresses associated with assembly.
- Fixed portion 20a also includes a wire guide block 406 which is designed to separate and align the wires 30a-30c and respective conductive contacts 34a-34c within the fixed portion 20a during assembly for subsequent engagement with the electrical connectors 504 of the cap portion 20b. More particularly, the wire guide block 406 includes a series of slots 407a, 407b and 407c disposed therein which are each dimensioned to receive a wire 30a, 30b and 30c, respectively.
- the slots 407a-407c may alternatively be an opening, such as an aperature or enclosed slot.
- clamps 404 serve a dual purpose: 1) initially retain the wires 30a-30c within fixed portion 20a; and 2) are dimensioned to mechanically engage and secure cap portion 20b with fixed portion 20a and further secure the conductive contacts 34a-34c upon engagement of the cap portion 20b.
- the cap portion 20b snaps into an engaged position with fixed portion 20a providing a quick electro-mechanical connection.
- cap portion 20b may permanently engage fixed portion 20a.
- clamps 404 may be integrally associated with the wire guide block 406 or may be secured thereto in a separate manufacturing step.
- the cap portion 20b includes a series of detents 502a, 502b, 502c and 502d which extend downwardly from the top portion 520 in a finger-like fashion to define a series of slots or formed surfaces 505a, 505b and 505c therebetween.
- Each formed surface 505a- 505c engages a corresponding clamps 404a-404c disposed within fixed portion 20a. The engagement of clamps 404a-404c and the formed surfaces 505a-505c secure the cap portion 20b to the fixed portion 20a.
- the detents 502a-502d are formed from a generally flexible material and the number of formed surfaces 505a-505c is at least equal to, and preferably the same as, the number of wires 30a-30c that are to be electrically connected to the FCB 302.
- Each formed surface 505a- 505c may be provided with retaining features (not shown) for further retaining wires 30a-30c received therein to prevent the wires 30a-30c from slipping in a proximal or distal direction during use.
- each formed surface 505a-505c may include a conductive element 504a, 504b, 504c for enhancing electric reliability during assembly.
- each of conductive elements 504a-504c may act as an electrical bridge between a respective conductive contact 34a-34c and the contacts 304a-304c of the FCB 302.
- the detents 502a-502d may be fabricated of a nonconductive material for preventing conduction between the conductive contacts 34a-34c when positioned within formed surfaces 505a-505c.
- each conductive contact 34a-34c Prior to engaging the removable cap portion 20b with the fixed portion 20a, the distal end 18 of the cable 16 positioned within the fixed portion 20a (or possibly the cap portion 20b) so that each conductive contact 34a-34c is positioned with a respective slot 407a-407c in the wire guide block 406.
- the engagement of the cap portion 20b abuts the conductive contacts 34a-34c against the corresponding electrical contacts 304a-304c of the FCB 302 for establishing, retaining and maximizing electrical contact between the conductive contacts 34a-34c and the corresponding contacts 304a-304c.
- the cap portion 20b also maintains the conductive contacts 34a-34c in a fixed position even when the cable 16 is moved during surgical conditions.
- Fixed portion 20a also includes a board slot 409 defined therein for receiving the FCB 302. It is envisioned that FCB 302 may be affixed to the fixed portion 20a by other means such as an adhesive or other mechanical connection. More particularly, during assembly, the FCB 302 is fed through slot 409 such that the FCB 302 slightly projects beyond a rear face 411 of the notch 402. When the conductive contacts 34a-34c are initially positioned within the fixed portion 20a (as explained in more detail below) and the FCB 302 is positioned within slot 409, the engagement of the cap portion 20b wedges the conductive contacts 34a-34c against the respective electrical contact 304a-304c of the FCB 302.
- the FCB 302 preferably includes an array of conductors bonded to a thin dielectric film, configured as a single layer, single-sided, double-sided, multilayer or rigid-flex circuit board, or a combination thereof. In a single-sided configuration the FCB 302 includes a single conductive layer. In a double sided configuration the FCB 302 includes two conductive layers that are usually accessible from both sides.
- the FCB 302 includes more than two layers, where Interconnection between layers is usually by means of plated-th rough holes.
- FCB 302 In a rigid-flex configuration the FCB 302 combines flexible circuitry with rigid PC board technology. It is also envisioned that the FCB 302 may incorporate surface mount technology (SMT) providing a strain-free bonding site for an SMT device. Contacts 304a-304c are provided for making electrical contact with other electrical components, such as the wires 30a- 30c of cable 16.
- SMT surface mount technology
- a second guide portion 408 is preferably provided, which includes a series with alignment openings 410a, 410b and 410c defined therein which are aligned in general horizontal registry within slots 407a, 407b and 407c.
- the second guide portion 408 is used to initially position the conductive contacts 34a-34c in proper alignment within the fixed portion 20a prior to engagement of the cap portion 20b, i.e., each conductive contact 34a-34c is inserted through a respective alignment opening 410a, 410b, 410c.
- each conductive contact 34a-34c is wedged into electrical contact with a corresponding contact 304a-304c of the FCB 302.
- the slots 407a-407c and clamps 404a-404c initially retain each wire 30a-30c in its initial position prior to engagement of cap portion 20b while the openings 410a-410c of the second guide portion 408 maintain the conductive contact 34a-34c in proper alignment for ultimate contact with the FCB 302.
- Additional retaining means may be provided within the cavity 402 for assisting the positioning and/or the retaining of the wires 30a-30c either prior to or after engagement of the cap portion 20b, e.g., a series of flexible or retractable lips provided on the inner walls or on the bottom surface of the cavity 402.
- detents 502a-502d include one or more tapered portions to facilitate assembly and to assure a tight, friction fit of the cap portion 20b within the fixed portion 20a.
- the side walls 532 of detents 502a and 502d are inwardly and downwardly tapered to guide and align the cap portion 20b into the cavity 402 of the fixed portion 20a.
- Detents 502a-502d may also be formed of a flexible material, such that the width of the formed surfaces 505a-505c is reduced (i.e., "squeezed") when the cap portion 20b is inserted into the cavity 402. It is further contemplated that inner walls of the cavity 402 may be tapered and/or provided with one or more grooves (not shown) for guiding the cap portion 20b into place during assembly.
- the slots 504a-504c align and orient the conductive contacts 34a-34c of the respective wires 30a-30c and guide the contacts 34a-34c into proper termination locations on the FCB 302.
- the wires 30a-30c are retained in position so that the conductive contacts 34a-34c of each wire 30a-30c is pressed against a corresponding electrical contact 304a-304c, respectively, of the FCB 302 in surface-to-surface contact along a length thereof.
- cap portion 20b may be configured for selective removal from the body portion 20a.
- Cap portion 20b may also be designed to initially receive and/or selectively retain the conductive contacts 34a-34c of the wires 30a-30c in a correct orientation prior to engagement of the cap portion 20b and fixed portion 20a which, as can be appreciated, allows for multiple engagements and disengagements of the cap portion 20b with the fixed body portion 20a, thus functioning as a quick disconnect.
- the cap portion 20b asserts pressure on the FCB 302, causing a portion of the FCB 302 into electrical contact with the conductive wires 30a- 30c.
- cap portion 20b or the fixed portion 20a may include one or plurality of LED (light emitting diodes) or other visual indicators which provide visual feedback regarding the electrical integrity of each electrical connection between the conductive wires 30a-30c and the terminal contacts 304a-304c.
- LED light emitting diodes
- any number of conductive wires 30a-30x may be employed with a corresponding number of terminal contacts 304-304x (and other internal components of the cap portion 20b and fixed portion 20a, e.g., detents, wire guide slots, alignment openings, clamps, etc.).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2516444A CA2516444C (en) | 2003-02-20 | 2004-02-03 | System and method for connecting an electrosurgical instrument to a generator |
EP04707738A EP1594392B1 (en) | 2003-02-20 | 2004-02-03 | Connector and method for connecting an electrosurgical instrument to a generator |
AU2004212894A AU2004212894B2 (en) | 2003-02-20 | 2004-02-03 | System and method for connecting an electrosurgical instrument to a generator |
JP2006503262A JP4829100B2 (en) | 2003-02-20 | 2004-02-03 | System and method for connecting an electrosurgical instrument to a generator |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US44852103P | 2003-02-20 | 2003-02-20 | |
US60/448,521 | 2003-02-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2004073488A2 true WO2004073488A2 (en) | 2004-09-02 |
WO2004073488A3 WO2004073488A3 (en) | 2005-09-22 |
Family
ID=32908599
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/002961 WO2004073488A2 (en) | 2003-02-20 | 2004-02-03 | System and method for connecting an electrosurgical instrument to a generator |
Country Status (7)
Country | Link |
---|---|
US (1) | US7104834B2 (en) |
EP (3) | EP1594392B1 (en) |
JP (1) | JP4829100B2 (en) |
AU (1) | AU2004212894B2 (en) |
CA (1) | CA2516444C (en) |
ES (1) | ES2367304T3 (en) |
WO (1) | WO2004073488A2 (en) |
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Also Published As
Publication number | Publication date |
---|---|
AU2004212894B2 (en) | 2009-10-22 |
US7104834B2 (en) | 2006-09-12 |
US20040229496A1 (en) | 2004-11-18 |
WO2004073488A3 (en) | 2005-09-22 |
EP2298206A1 (en) | 2011-03-23 |
EP1594392A4 (en) | 2007-08-08 |
EP2292173A1 (en) | 2011-03-09 |
AU2004212894A1 (en) | 2004-09-02 |
JP4829100B2 (en) | 2011-11-30 |
CA2516444A1 (en) | 2004-09-02 |
EP2298206B1 (en) | 2012-10-31 |
EP1594392A2 (en) | 2005-11-16 |
EP2292173B1 (en) | 2012-05-09 |
ES2367304T3 (en) | 2011-11-02 |
JP2006518255A (en) | 2006-08-10 |
EP1594392B1 (en) | 2011-06-08 |
CA2516444C (en) | 2011-11-01 |
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