A forceps includes an end effector assembly having first and second jaw members. One (or both) of the first and second jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a jaw frame a disposable jaw housing and an elastomeric ring member. The disposable jaw housing is releasably engageable with the jaw frame. The elastomeric ring member is removably positionable about a distal end of the jaw housing. The elastomeric ring member is configured to define a gap distance between the first and second jaw members upon movement of the first and second jaw members to the approximated position.
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1. A forceps, comprising:
an end effector assembly including first and second jaw members defining respective proximal and distal ends, the first and second jaw members coupled to each other at the respective proximal ends thereof such that at least one of the first and second jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween, at least one of the jaw members including:
an electrically-conductive plate disposed between the proximal and distal ends of the at least one jaw member and spaced-apart from the distal end thereof;
a jaw housing supporting the plate thereon, the jaw housing including a distal portion disposed between the electrically-conductive plate and the distal end of the at least one jaw member; and
a ring member surrounding the distal portion of the jaw housing, the ring member distally-spaced from the plate and extending beyond the plate towards the other jaw member such that, in the approximated position of the first and second jaw members, the ring member contacts a portion of the other jaw member to define a gap distance between the plate and the other jaw member.
10. A forceps, comprising:
an end effector assembly including first and second jaw members defining respective proximal and distal ends, the first and second jaw members coupled to each other at the respective proximal ends thereof such that at least one of the first and second jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween, at least one of the jaw members including:
a jaw frame;
an electrically-conductive plate disposed between the proximal and distal ends of the at least one jaw member and spaced-apart from the distal end thereof;
a jaw housing supporting the plate thereon and disposed about the jaw frame, the jaw housing including a distal portion disposed between the electrically-conductive plate and the distal end of the at least one jaw member; and
a ring member surrounding the distal portion of the jaw housing and retaining the jaw housing about the jaw frame, the ring member distally-spaced from the plate and extending from the plate towards the other jaw member such that, in the approximated position of the first and second jaw members, the ring member contacts a portion of the other jaw member to define a gap distance between the plate and the other jaw member.
0. 19. A forceps, comprising:
an end effector assembly including first and second jaw members defining respective proximal and distal ends, the first and second jaw members coupled to each other at the respective proximal ends thereof such that at least one of the first or second jaw members is movable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween, the first jaw member including:
an electrically-conductive plate disposed between the proximal and distal ends of the first jaw member and spaced-apart from the distal end thereof;
a jaw housing supporting the electrically-conductive plate thereon, the jaw housing including a distal portion disposed between the electrically-conductive plate and the distal end of the first jaw member; and
a gap distance control member disposed at the distal portion of the jaw housing, the gap distance control member distally-spaced from the electrically-conductive plate and extending beyond the electrically-conductive plate towards the second jaw member such that, in the approximated position of the first and second jaw members, the gap distance control member contacts a portion of the second jaw member to define a gap distance between the electrically-conductive plate and the second jaw member.
2. The forceps according to
3. The forceps according to
4. The forceps according to
5. The forceps according to
6. The forceps according to
7. The forceps according to
8. The forceps according to
9. The forceps according to
11. The forceps according to
12. The forceps according to
13. The forceps according to
14. The forceps according to
15. The forceps according to
16. The forceps according to
17. The forceps according to
18. The forceps according to
0. 20. The forceps according to claim 19, wherein the gap distance control member is insulative.
0. 21. The forceps according to claim 19, wherein the gap distance control member is elastomeric.
0. 22. The forceps according to claim 19, wherein the gap distance control member surrounds the distal portion of the jaw housing.
0. 23. The forceps according to claim 22, wherein the gap distance control member is configured as a ring surrounding the distal portion of the jaw housing.
0. 24. The forceps according to claim 19, wherein the second jaw member includes:
an electrically-conductive plate disposed between the proximal and distal ends of the second jaw member and spaced-apart from the distal end of the second jaw member;
a jaw housing supporting the electrically-conductive plate thereon, the jaw housing including a distal portion disposed between the electrically-conductive plate and the distal end of the second jaw member; and
a gap distance control member disposed at the distal portion of the jaw housing, the gap distance control member distally-spaced from the electrically-conductive plate and extending beyond the electrically-conductive plate towards the first jaw member such that, in the approximated position of the first and second jaw members, the gap distance control members of the first and second jaw members contact one another to define a gap distance between the electrically-conductive plates thereof.
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This application is a continuation application of U.S. patent application Ser. No. 13/091,331, filed on Apr. 21, 2011, the entire contents of which are hereby incorporated by reference herein.
The present disclosure relates to a surgical forceps and, more particularly, to a surgical forceps including replaceable jaw members.
A forceps is a plier-like instrument which relies on mechanical action between its jaws to grasp, clamp and constrict vessels or tissue. Electrosurgical forceps utilize both mechanical clamping action and electrical energy to affect hemostasis by heating tissue and blood vessels to coagulate and/or cauterize tissue. Certain surgical procedures require more than simply cauterizing tissue and rely on the unique combination of clamping pressure, precise electrosurgical energy control and gap distance (i.e., distance between opposing jaw members when closed about tissue) to “seal” tissue, vessels and certain vascular bundles. Typically, once a vessel is sealed, the surgeon has to accurately sever the vessel along the newly formed tissue seal. Accordingly, many vessel sealing instruments have been designed which incorporate a knife or blade member which effectively severs the tissue after forming a tissue seal.
Generally, surgical instruments, including forceps, can be classified as single-use instruments, e.g., instruments that are discarded after a single use, partially-reusable instruments, e.g., instruments including both disposable portions and portions that are sterilizable for reuse, and completely reusable instruments, e.g., instruments that are completely sterilizable for repeated use. As can be appreciated, those instruments (or components of instruments) that can be sterilized and reused help reduce the costs associated with the particular surgical procedure for which they are used. However, although reusable surgical instruments are cost-effective, it is important that these instruments be capable of performing the same functions as their disposable counterparts and that any disposable components of these instruments be removable and replaceable with new components efficiently and easily.
In accordance with one embodiment of the present disclosure, a forceps is provided. The forceps includes an end effector assembly having first and second jaw members. One (or both) of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a jaw frame, a jaw housing, and an elastomeric ring member. The jaw housing is releasably engageable with the jaw frame. The elastomeric ring member is removably positionable about a distal end of the jaw housing. The elastomeric ring member is configured to define a gap distance between the first and second jaw members upon movement of the first and second jaw members to the approximated position.
In one embodiment, the gap distance is in the range of about 0.001 inches to about 0.006 inches.
In another embodiment, the jaw housing includes an electrically-conductive seal plate releasably engageable therewith. The seal plate may be adapted to connect to a source of electrosurgical energy for sealing tissue.
The jaw housing may further include an insulating member releasably engageable therewith. The insulating member is configured to releasably retain the seal plate thereon.
In another embodiment, the jaw housing is slidably positionable about the seal plate, the insulating member, and the jaw frame to releasably secure the seal plate, the insulating member, and the jaw frame to one another.
In yet another embodiment, the insulating member is formed at least partially from a resiliently compressible material configured to be compressed upon slidable positioning of the jaw housing about the seal plate, the insulating member and the jaw frame to releasably secure the seal plate, the insulating member and the jaw frame to one another in a friction-fit engagement.
In still another embodiment, the insulating member is configured to snap-fittingly engage the jaw housing upon slidable positioning of the jaw housing about the seal plate, the insulating member and the jaw frame to releasably secure the seal plate, the insulating member and the jaw frame to one another.
In still yet another embodiment, the insulator includes a proximal stop feature configured to define a proximal gap distance between the first and second jaw members upon movement of the first and second jaw members to the approximated position. In such an embodiment, the elastomeric ring member defines a distal gap distance between the first and second jaw members upon movement of the first and second jaw members to the approximated position.
In another embodiment, the seal plate and the insulating member include longitudinally-extending channels defined therethrough. The longitudinally-extending channels defined within the seal plate and the insulating member are configured to permit reciprocation of a knife therethrough.
A method of assembling a jaw member of a forceps is also provided in accordance with the present disclosure. The method includes releasably engaging a jaw housing to a jaw frame. The method further includes positioning an elastomeric ring member about the jaw housing toward a distal end thereof. The elastomeric ring member is configured to define a gap distance between the jaw member and an opposed jaw member of the forceps when the jaw members are moved to an approximated position.
In one embodiment, the gap distance is in the range of about 0.001 inches to about 0.006 inches.
In another embodiment, the jaw housing includes an electrically-conductive seal plate releasably engageable therewith. The seal plate may be adapted to connect to a source of electrosurgical energy for sealing tissue. The jaw housing may further include an insulating member releasably engageable therewith. The insulating member is configured to retain the seal plate thereon.
In another embodiment, releasably engaging the jaw housing to the jaw frame further includes positioning the insulating member about the jaw frame, positioning the seal plate about the insulating member, and slidably positioning the jaw housing about the seal plate, the insulating member, and the jaw frame to releasably secure the seal plate, the insulating member, and the jaw frame to one another.
In still another embodiment, the insulating member is formed partially (or entirely) from a resiliently compressible material. In such an embodiment, the insulating member is configured to be compressed upon slidable positioning of the jaw housing about the seal plate, the insulating member and the jaw frame to thereby releasably secure the seal plate, the insulating member and the jaw frame to one another in a friction-fit engagement.
In still yet another embodiment, the insulating member is configured to snap-fittingly engage the jaw housing upon slidable positioning of the jaw housing about the seal plate, the insulating member and the jaw frame to secure the seal plate, the insulating member and the jaw frame to one another.
In yet another embodiment, the method further includes disengaging the jaw housing from the jaw frame, releasably engaging a second jaw housing to the jaw frame, and positioning a second elastomeric ring member about the second jaw housing toward a distal end thereof. The second elastomeric ring member, similar to the first elastomeric ring member, is configured to define a gap distance between the jaw member and the opposed jaw member of the forceps when the jaw members are moved to the approximated position.
In another embodiment of a forceps provided in accordance with the present disclosure, an end effector assembly includes first and second jaw members. One (or both) of the jaw members is moveable relative to the other between a spaced-apart position and an approximated position for grasping tissue therebetween. One (or both) of the jaw members includes a jaw frame, a jaw housing and an elastomeric ring member. The ring member is removably positionable about a distal end of the jaw housing to releasably secure the jaw housing to the jaw frame. The elastomeric ring member is also configured to define a gap distance between the first and second jaw members upon movement of the first and second jaw members to the approximated position.
Similar to the previous embodiments, the forceps may also include an insulating member and a seal plate. In such embodiments, the insulating member, the jaw housing and/or the jaw frame may include a ring receiving feature defined therein and configured to retain the elastomeric ring member in position thereon. The forceps may otherwise be configured similarly to any of the other embodiments described above.
Another embodiment of a method of assembling a jaw member of a forceps is provided in accordance with the present disclosure. The method includes positioning a jaw housing about a jaw frame and positioning an elastomeric ring member about the jaw housing to releasably secure the jaw housing to the jaw frame. The elastomeric ring member is also configured to define a gap distance between the jaw member and an opposed jaw member of the forceps when the jaw members are moved to an approximated position. The method may further include any of the features of any of the other embodiments discussed above.
Various embodiments of the present disclosure are described herein with reference to the drawings wherein:
Embodiments of the present disclosure are described in detail with reference to the drawing figures wherein like reference numerals identify similar or identical elements. As used herein, the term “distal” refers to the portion that is being described which is further from a user, while the term “proximal” refers to the portion that is being described which is closer to a user.
Referring now to
Turning now to
With continued reference to
Referring momentarily to
Referring again to
Referring now to
A ratchet 30′ may be included for selectively locking the jaw members 110 and 120 relative to one another at various positions during pivoting. It is envisioned that the ratchet 30′ may include graduations or other visual markings that enable the user to easily and quickly ascertain and control the amount of closure force desired between the jaw members 110 and 120.
With continued reference to
Forceps 10′ may further include a knife assembly (not shown) disposed within either of shafts 12a, 12b and a knife channel (
Turning now to
Jaw members 110, 120 of end effector assembly 100 each include a disposable component 210, 220 that is releasably engageable with a jaw frame 112, 122, respectively. Jaw frames 112, 122, in turn, are pivotably coupled to one another about pivot 103. Disposable components 210, 220 are removable from jaw frames 112, 122, respectively, and are replaceable with new disposable components 210, 220, e.g., disposable components 210, 220 may be configured to be discarded and replaced after a single use (or a single procedure), while the remaining components of forceps 10 may be formed from a sterilizable material such that they may be sterilized, e.g., placed in an autoclave (not shown), after each procedure for repeat use in conjunction with subsequent sets of disposable components 210, 220, e.g., a second set of disposable components 210, 220. Alternatively, the remaining components of forceps 10 may likewise be disposable. In either embodiment, disposable components 210, 220 are advantageous in that the surgeon may select the disposable components 210, 220 for use with forceps 10 that are best suited for the particular procedure to be performed, i.e., the surgeon may customize forceps 10 to the particular procedure to be performed by selecting a particular set of disposable components 210, 220, without requiring an entirely new surgical instrument. For example, the surgeon may select between a first set of disposable components 210, 220 configured for a first surgical purpose and a second set of disposable components 210, 220 configured for a second, different surgical purpose, depending on the surgical procedure to be performed. As can be appreciated, requiring only a new set, i.e., a second set, of disposable components 210, 220 for each use, rather than an entire new surgical instrument, helps reduce the equipment costs associated with performing a particular surgical procedure. Likewise, the ability to interchangeably use different disposable components 210, 220, e.g., first and second sets of disposable components 210, 220, allows a single instrument to be customizable for use in various different procedures, rather than requiring a different instrument for each different procedure.
With continued reference to
As best shown in
Insulator 224 may alternatively, or additionally, be formed from a resiliently compressible material, e.g., silicon, that is compressed, e.g., from an initial state to a compressed state, upon insertion of insulator 224 into jaw housing 222 such that insulator 224, tissue sealing plate 226 and jaw frame 122 are frictionally retained within jaw housing 222, e.g., under the biasing force urging insulator 224 back toward the initial state. Further, insulator 224 may include a blade slot 225c defined therein for reciprocation of a knife blade (not shown) therethrough.
With continued reference to
Referring again to
As will be described in greater detail below, O-ring 228 may also be configured to provide a gap distance “g” between jaw members 110, 120 at a distal end 102 of end effector assembly 100, in conjunction with, or in place of base 225a of insulator 224 (
Turning now to
Jaw member 110 is configured similarly to jaw member 120 except that jaw member 110 does not include an O-ring disposed about jaw housing 212. However, jaw member 110 may alternatively be configured to include an O-ring in place of, or in addition to O-ring 228 of jaw member 120 (
Referring once again to
Next, insulator 224 and tissue sealing plate 226 are positioned atop jaw frame 122 such that proximal end 123 of jaw frame 122 abuts base 225a of insulator 224. Accordingly, in this position, insulator 224 is inhibited from translating distally relative to jaw frame 122 and tissue sealing plate 226, due to the abutting relation of base 225a therewith.
With insulator 224 and tissue sealing plate 226 disposed about jaw frame 122, jaw housing 222 is slidably inserted over insulator 224, tissue sealing plate 226, and jaw frame 122. In other words, insulator 224, tissue sealing plate 226, and jaw frame 122 and slid into elongated cavity 223a defined within jaw housing 222. More specifically, insulator 224, tissue sealing plate 226, and jaw frame 122 are slid into elongated cavity 223a until lateral flanges 225b of insulator 224 snap into engagement with elongated slots 223d defined within jaw housing 222. An audible and/or tactile “snap,” or other feedback signal, may be provided to alert the user that jaw housing 222 has been securely engaged about insulator 224, tissue sealing plate 226, and jaw frame 122. In this position, as best shown in
Once jaw housing 222 is secured about jaw frame 122, insulator 224 and tissue sealing plate 226, O-ring 228 may be slid over distal end 223c of member 120 and into position within annular groove 223b of jaw housing 222 to complete the assembly of jaw member 120. As mentioned above, the specific O-ring 228 chosen may depend on the desired gap distance “g” between tissue sealing plates 216, 226 of jaw members 110, 120, respectively, which, in turn, may depend on the size and/or composition of tissue to be sealed, the particular procedure to be performed, and/or other anatomical considerations.
As best shown in
Turning back to
Upon moving jaw members 110, 120 to the approximated position, as shown in
With continued reference to
With tissue grasped between sealing plates 216, 226, of jaw members 110, 120, respectively, electrosurgical energy may be supplied to one (or both) of tissue sealing plates 216, 226 and through tissue to effect a tissue seal. As can be appreciated, controlling the gap distance “g” between sealing plates 216 and 226, e.g., via O-ring 228 and/or proximal bases 215, 225a, helps to ensure that an effective tissue seal is achieved. The gap distance “g” between opposing sealing plates 216 and 226 during sealing ranges from about 0.001 inches to about 0.006 inches.
In embodiments where a knife assembly (not shown) is provided, the knife blade (not shown) may then be advanced through the knife channels of jaw member 110 and/or jaw member 120 to cut tissue along the previously formed tissue seal. Thereafter, jaw members 110, 120 may be returned to the spaced-apart position to release the sealed and divided tissue and end effector assembly 100 may be removed from the surgical site. Finally, disposable components 210, 220 may be removed from the respective jaw frames 112, 122, e.g., with respect to disposable component 220, via disengaging lateral flanges 225b of insulator 224 from elongated slots 223d of jaw housing 222 and similarly with respect to disposable component 210, and discarded. After sterilization of forceps 10, a second set of disposable components 210, 220 (including a second O-ring 228) may be engaged thereon similarly as described above for performing subsequent procedures.
Turning now to
With continued reference to
Continuing with reference to
Insulator 1224 is substantially similar to insulator 224 (
However, different from insulator 224 (
With continued reference to
O-ring 1228, as mentioned above, is configured for positioning within annular slot 1223b of housing 1222, annular slot 1225b formed within insulator 1224, and divot 1123 formed within jaw frame 1122 such that, upon positioning of O-ring 1228 about jaw housing 1222, insulator 1224 and jaw frame 1122, O-ring retains jaw housing 1222, insulator 1224, jaw frame 1122, and tissue sealing plate 1226 (which is retained in fixed position relative to insulator 1224) in substantially fixed relation relative to one another. As can be appreciated, similar to O-ring 228 of jaw member 120 (
From the foregoing and with reference to the various figure drawings, those skilled in the art will appreciate that certain modifications can also be made to the present disclosure without departing from the scope of the same. While several embodiments of the disclosure have been shown in the drawings, it is not intended that the disclosure be limited thereto, as it is intended that the disclosure be as broad in scope as the art will allow and that the specification be read likewise. Therefore, the above description should not be construed as limiting, but merely as exemplifications of particular embodiments. Those skilled in the art will envision other modifications within the scope and spirit of the claims appended hereto.
Sims, Grant T., Townsend, Jeffrey R., Collings, Chase
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 07 2011 | SIMS, GRANT T | Tyco Healthcare Group LP | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 044690 | /0663 | |
Apr 08 2011 | TOWNSEND, JEFFREY R | Tyco Healthcare Group LP | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 044690 | /0663 | |
Apr 20 2011 | COLLINGS, CHASE | Tyco Healthcare Group LP | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 044690 | /0663 | |
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