CA2068481C - Gear activated surgical sleeve assembly - Google Patents
Gear activated surgical sleeve assemblyInfo
- Publication number
- CA2068481C CA2068481C CA002068481A CA2068481A CA2068481C CA 2068481 C CA2068481 C CA 2068481C CA 002068481 A CA002068481 A CA 002068481A CA 2068481 A CA2068481 A CA 2068481A CA 2068481 C CA2068481 C CA 2068481C
- Authority
- CA
- Canada
- Prior art keywords
- cylindrical member
- sleeve assembly
- surgical
- housing
- bodily cavity
- 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.)
- Expired - Lifetime
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/02—Holding devices, e.g. on the body
- A61M25/04—Holding devices, e.g. on the body in the body, e.g. expansible
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B2017/348—Means for supporting the trocar against the body or retaining the trocar inside the body
- A61B2017/3482—Means for supporting the trocar against the body or retaining the trocar inside the body inside
- A61B2017/3484—Anchoring means, e.g. spreading-out umbrella-like structure
Abstract
A surgical sleeve assembly is disclosed for use in inserting a laparoscopic instrument into the abdominal cavity during surgery and includes a cylindrical member activated by intermeshing gears to expand a cylindrical member having a normally retracted outer diameter when the surgical sleeve assembly is within the abdominal cavity, to resist withdrawing movement of the assembly from the abdominal cavity.
Description
2 (lj FIELD OF THE INVENTION: The present invention is 3 directed to a medical device, and, more particularly, to a 4 surgical sleeve assembly which can be inserted a short distance into the abdominal cavity and expanded to resist the device from 6 sliding in and out of a surgical incision 7 (2) BRI~F DESCRIPTION O~ THE PRIOR ART: Endoscopic surgical 8 procedures gain access to the inside of an anatomical cavity by 9 first usin~ an implement, such as a trocar spike, cannula or a o needle having a sharpened point to pierce or puncture the bodily 1 tissues, muscles, membranes, or the like, which may form a portion 2 of or ~u-lo~ld, the cavity wall.
3 Similarly, in many endoscopic procedures, a small incision may 4 be made in the skin of a patient along the abdomen, for example, and the sharp point of a larger penetrating implement, such as a 6 trocar spike of suitable length and diameter, may be inserted into 7 the incision, and pushed until ~he point punctures the cavity wall.
8 Thereafter, a sleeve is slid over the exterior surface of the 9 implement into the puncture wound to serve as a lining for , . .
0 preserving the shape of the passageway created by the implement and 1 for insertion of an endoscope, laparoscope, or the like, to view 2 and operate upon organs within the cavity.
3 In many such applications, a trocar is used which incorporates 4 a sleeve which may have a tendency to slide in and out of the incision in the abdominal wall, particularly when the surgeon is 2 ~ ~
2068~81 trying to move the laparoscopic instrument through the interior of the trocar sleeve into or out of the abdominal cavity.
One solution to such prior art deficiencies is discussed in U.S. Patent No. 5,122,122 issued June, 1992, entitled "Locking Trocar Sleeve", and assigned to the same assignee as the present invention. In such application, concentric sleeves are disclosed, with the outer of the sleeves being manipulatable between contracted and expanded outer diameters to form a mushroom-like configuration at the distal end of the device which has been inserted into the abdominal cavity, such that resistance to withdrawal movements is effected when the surface of the mushroom contacts an abdominal wall. The activation of the mushroom is effected by a comparatively complex rotational or other mechanism, as disclosed. Moreover, the outer member which is "mushroomed" is not the member which, itself, is directly activated.
The present invention addresses the deficiencies of the prior art, as set forth above.
SUMMARY OF THE INVENTION
In the present invention, a surgical sleeve assembly is provided for use in inserting an endoscopic instrument into the abdominal cavity. The assembly comprises a housing with first and second elongate cylindrical members having first ends mounted through the housing. The cylindrical members are concentrically disposed relative to one another. One of the cylindrical members defines a .~
1 passageway for receipt of an auxiliary surgical instrument 2 therethrough. One of the cylindrical members has a second end with 3 a first normally retracted external diameter selectively expandable 4 to a second enlarged external diameter to resist withdrawal of the assembly from within an abdominal cavity when the external diameter 6 of said one of the cylindrical members is selectively expanded.
7 The one of the said members has a first gear member including first 8 inter-engageable means, while a second gear member is carried on 9 the housi-ng and has a second inter-engageable means, such as intermeshing teeth, for companion interfacing with the first inter-ll engageable means.
12 The gear means are manually non-rotatably manipulatable to L3 move the second end of the cylindrical member between the retracted L4 and enlarged diameters.
BRIEF DESCRIPTION OF THE DRAWINGS
L6 Fig. 1 is a sectional schematic illustration of~the apparatus 17 of the present invention in position prior to insertion into an 18 abdominal cavity, with the cylindrical members being in normally 19 retracted position relative to one another.
Fig. 2 is a view similar to that of Fig. 1, but-~llustrating-21 the position of one of the cylindrical members relative to the 22 other when the one cylindrical member's outer diameter is expanded, 23 such as subsequent to insertion through the abdominal wall into the 24 cavity, during surgery.
2068~81 1 Fig. 3 is a prospective illustration of one of the cylindrical 2 members and sleeve and an inter-engaging gear means.
3 Fig. 3A is a view similar to that of Fig. 3, illustrating the 4 position of the respective components during activation such that S the outer cylindrical sleeve is in expanded position.
6 Flg. 4 is an outer perspective ~iew of the apparatus of the 7 present invention illustrating, in particular, the manual 8 manipulating means through the housing and the seal assembly for 9 insertion ~f an auxiliary instrument, such as a laparoscope.
Fig. 5 is a view similar to that of Fig. 4, showing the L1 insertion of an auxiliary instrument, such as the laparoscope.
12 DESCRIPTION OF THE PR~KK~u EMBODIMENTS
L3 Now with first reference to Fig. 1, there is shown a surgical 14 sleeve assembly 10 having a housing 11 with an upper opening 32 L~ defined therein for receipt of the outwardmost end of a hand-~6 manipulatable lever 33. The housing 11 has a distal end with an 17 abutment skirt llA thereon terminating in a receptacle llB for 18 receipt of first and second concentrically disposed cylindrical 19 members 12 and 13 therethrough and into the housing 11.
~0 A passageway 16 extends completely through the assembly 10 and ~1 the innermost of the cylindrical members 13 to an opening 15. An ~2 end 14 is defined on the distal end of the first elongate ~3 cylindrical member 12, which is inserted into the abdominal cavity.
'4 As shown in Fig. 1, the first elongate cylindrical member 12 has a ~5 retracted outer diameter 17.
1 Now referring to Fig. 2, the first and second eLongate 2 cylindrical members 12 and 13 are secured, one to another by means 3 of securements 30 radially spaced there-across at the distal end, 4 such as by spot welding, or the like.
The first elongate cylindrical member 12 carries-thereon a 6 portion within the housing 11 defining a gear member 19 having 7 inter-engaging teeth at 20 thereon and, preferably, in a spiral in 8 an annular tooth configuration, 22. A cylindrical extension 26 has 9 a no-go shoulder 27 (Fig. 3) thereon which contacts the end l9A of the gear member 19 when the cylindrical members 12, 13 are moved to 11 the normally retracted position, as shown in Fig. 1, to thereby 12 limit travel of the moving cylindrical member in one direction, 13 i.e., when the cylindrical member 12 is moved by the lever 33 14 from the expanded position, Fig. 2, to the retracted position, Fig. 1.
16 Companion inter-engaging teeth members 21 are provided 17 circularly around a portion of a ring component 21A of the lever 18 33 for inter-engagement with the teeth 20 on the gear member 19 of 19 the first elongate cylindrical member 12.
The extension memker 26 has a--series-of outwardly--pro-truding 21 wing members, 28A, 28B which are inserted in companion slots 29A, 22 29B on the housing 11 for securement thereto. An outer seal-member 23 31A and companion lip seal 31B, as shown in Fig. 4, minimize 24 transmission of gasses, and other fluids, from within the 2068~81 1 passageway 16, when the assembly 10 is within the abdominal cavity, 2 during surgery.
3 An auxiliary instrument I, such as a laparoscope, may be 4 inserted through the seal member 3lB and into the passageway 16, subsequent to insertion of the assembly 10 within the, abdominal 6 cavity`ànd manipulation of the first elongate cylindrical member 12 7 to the expanded outer diameter 18, as shown in Fig. 2.
8 Now referring to Fig.'s 3 and 3A, a sleeve portion 25 is 9 defined immediate the distal end of the first elongate cylindrical 0 member 12 and has a series of radially extending serrated flexing 1 members 23 thereon with openings 24 inter-defined there between.
2 A serration 23A is cut on each of the flexing members 23 to permit 3 flexing movement to the expanding outer diameter position 18.
,5 When it is desired to insert the surgical sleeve assembly 10 l6 into the abdominal wall through an incision, or the like, during L7 surgery, the assembly 10 is inserted therein by the surgeon L8 simply grasping the housing 11 and inserting the assembly 10 19 through such incision, or opening. Thereafter, prior to introduction of the auxiliary instrument I thro~gh the_assembly ~1 10, the lateral and non-rotating lever 33 is contacted by the ~2 finger or thumb of the surgeon and moved from the position shown ~3 in Fig. 3, backwardly, to the position shown in Fig. 3A.
,4 Accordingly, as the control 33 is manipulated, the teeth 21 in ,5 the ring 21A will travel across the companion inter-engaging teeth 20 in the teeth configuration 22 of 7 '5;~
~ 2068~81 1 `\the gear member 19, such that the first elongate cylindrical member 2 12 moves non-rotatably and laterally away from the no-go shoulder 3 27 on the cylindrical extension 26. Because the first and second 4 cylindrical members 12, 13 are attached one to another by means of the securements 30 at the distal end of the assembly 10" movement 6 of the first elongate cylindrical member 12 relative to the second 7 member, 13, will cause the sleeve portion 2S flexing members 23 to 8 be urged radially outwardly from the cylindrical member 12 from the 9 retracted-outer diameter of position 17 (Fig. 1) to the expanded o outer diameter of 18 (Fig. 2). In the position shown in Fig. 2, 1 the surgical sleeve assembly 10 thus resists removal from the 2 abdominal wall W in the cavity, during surgery.
3 The apparatus may be moved from the position shown in ~ig. 2 4 to the position shown in ~ig. 1 by reversing the procedure described above, and the assembly 10 completely withdrawn from the 6 abdominal wall W.
7 Although the invention has been described in terms of 8 specified embodiments which are set forth in detail, it should be 9 understood that this is by il~ustration only and that the invention O is not necessarily limited thereto, since alternative embodiments :1 and operating techniques will become apparent to those skilled in 2 the art and view of the disclosure. Accordingly, modifications are :3 contemplated which can be made without departing from the spirit of 4 the described invention.
3 Similarly, in many endoscopic procedures, a small incision may 4 be made in the skin of a patient along the abdomen, for example, and the sharp point of a larger penetrating implement, such as a 6 trocar spike of suitable length and diameter, may be inserted into 7 the incision, and pushed until ~he point punctures the cavity wall.
8 Thereafter, a sleeve is slid over the exterior surface of the 9 implement into the puncture wound to serve as a lining for , . .
0 preserving the shape of the passageway created by the implement and 1 for insertion of an endoscope, laparoscope, or the like, to view 2 and operate upon organs within the cavity.
3 In many such applications, a trocar is used which incorporates 4 a sleeve which may have a tendency to slide in and out of the incision in the abdominal wall, particularly when the surgeon is 2 ~ ~
2068~81 trying to move the laparoscopic instrument through the interior of the trocar sleeve into or out of the abdominal cavity.
One solution to such prior art deficiencies is discussed in U.S. Patent No. 5,122,122 issued June, 1992, entitled "Locking Trocar Sleeve", and assigned to the same assignee as the present invention. In such application, concentric sleeves are disclosed, with the outer of the sleeves being manipulatable between contracted and expanded outer diameters to form a mushroom-like configuration at the distal end of the device which has been inserted into the abdominal cavity, such that resistance to withdrawal movements is effected when the surface of the mushroom contacts an abdominal wall. The activation of the mushroom is effected by a comparatively complex rotational or other mechanism, as disclosed. Moreover, the outer member which is "mushroomed" is not the member which, itself, is directly activated.
The present invention addresses the deficiencies of the prior art, as set forth above.
SUMMARY OF THE INVENTION
In the present invention, a surgical sleeve assembly is provided for use in inserting an endoscopic instrument into the abdominal cavity. The assembly comprises a housing with first and second elongate cylindrical members having first ends mounted through the housing. The cylindrical members are concentrically disposed relative to one another. One of the cylindrical members defines a .~
1 passageway for receipt of an auxiliary surgical instrument 2 therethrough. One of the cylindrical members has a second end with 3 a first normally retracted external diameter selectively expandable 4 to a second enlarged external diameter to resist withdrawal of the assembly from within an abdominal cavity when the external diameter 6 of said one of the cylindrical members is selectively expanded.
7 The one of the said members has a first gear member including first 8 inter-engageable means, while a second gear member is carried on 9 the housi-ng and has a second inter-engageable means, such as intermeshing teeth, for companion interfacing with the first inter-ll engageable means.
12 The gear means are manually non-rotatably manipulatable to L3 move the second end of the cylindrical member between the retracted L4 and enlarged diameters.
BRIEF DESCRIPTION OF THE DRAWINGS
L6 Fig. 1 is a sectional schematic illustration of~the apparatus 17 of the present invention in position prior to insertion into an 18 abdominal cavity, with the cylindrical members being in normally 19 retracted position relative to one another.
Fig. 2 is a view similar to that of Fig. 1, but-~llustrating-21 the position of one of the cylindrical members relative to the 22 other when the one cylindrical member's outer diameter is expanded, 23 such as subsequent to insertion through the abdominal wall into the 24 cavity, during surgery.
2068~81 1 Fig. 3 is a prospective illustration of one of the cylindrical 2 members and sleeve and an inter-engaging gear means.
3 Fig. 3A is a view similar to that of Fig. 3, illustrating the 4 position of the respective components during activation such that S the outer cylindrical sleeve is in expanded position.
6 Flg. 4 is an outer perspective ~iew of the apparatus of the 7 present invention illustrating, in particular, the manual 8 manipulating means through the housing and the seal assembly for 9 insertion ~f an auxiliary instrument, such as a laparoscope.
Fig. 5 is a view similar to that of Fig. 4, showing the L1 insertion of an auxiliary instrument, such as the laparoscope.
12 DESCRIPTION OF THE PR~KK~u EMBODIMENTS
L3 Now with first reference to Fig. 1, there is shown a surgical 14 sleeve assembly 10 having a housing 11 with an upper opening 32 L~ defined therein for receipt of the outwardmost end of a hand-~6 manipulatable lever 33. The housing 11 has a distal end with an 17 abutment skirt llA thereon terminating in a receptacle llB for 18 receipt of first and second concentrically disposed cylindrical 19 members 12 and 13 therethrough and into the housing 11.
~0 A passageway 16 extends completely through the assembly 10 and ~1 the innermost of the cylindrical members 13 to an opening 15. An ~2 end 14 is defined on the distal end of the first elongate ~3 cylindrical member 12, which is inserted into the abdominal cavity.
'4 As shown in Fig. 1, the first elongate cylindrical member 12 has a ~5 retracted outer diameter 17.
1 Now referring to Fig. 2, the first and second eLongate 2 cylindrical members 12 and 13 are secured, one to another by means 3 of securements 30 radially spaced there-across at the distal end, 4 such as by spot welding, or the like.
The first elongate cylindrical member 12 carries-thereon a 6 portion within the housing 11 defining a gear member 19 having 7 inter-engaging teeth at 20 thereon and, preferably, in a spiral in 8 an annular tooth configuration, 22. A cylindrical extension 26 has 9 a no-go shoulder 27 (Fig. 3) thereon which contacts the end l9A of the gear member 19 when the cylindrical members 12, 13 are moved to 11 the normally retracted position, as shown in Fig. 1, to thereby 12 limit travel of the moving cylindrical member in one direction, 13 i.e., when the cylindrical member 12 is moved by the lever 33 14 from the expanded position, Fig. 2, to the retracted position, Fig. 1.
16 Companion inter-engaging teeth members 21 are provided 17 circularly around a portion of a ring component 21A of the lever 18 33 for inter-engagement with the teeth 20 on the gear member 19 of 19 the first elongate cylindrical member 12.
The extension memker 26 has a--series-of outwardly--pro-truding 21 wing members, 28A, 28B which are inserted in companion slots 29A, 22 29B on the housing 11 for securement thereto. An outer seal-member 23 31A and companion lip seal 31B, as shown in Fig. 4, minimize 24 transmission of gasses, and other fluids, from within the 2068~81 1 passageway 16, when the assembly 10 is within the abdominal cavity, 2 during surgery.
3 An auxiliary instrument I, such as a laparoscope, may be 4 inserted through the seal member 3lB and into the passageway 16, subsequent to insertion of the assembly 10 within the, abdominal 6 cavity`ànd manipulation of the first elongate cylindrical member 12 7 to the expanded outer diameter 18, as shown in Fig. 2.
8 Now referring to Fig.'s 3 and 3A, a sleeve portion 25 is 9 defined immediate the distal end of the first elongate cylindrical 0 member 12 and has a series of radially extending serrated flexing 1 members 23 thereon with openings 24 inter-defined there between.
2 A serration 23A is cut on each of the flexing members 23 to permit 3 flexing movement to the expanding outer diameter position 18.
,5 When it is desired to insert the surgical sleeve assembly 10 l6 into the abdominal wall through an incision, or the like, during L7 surgery, the assembly 10 is inserted therein by the surgeon L8 simply grasping the housing 11 and inserting the assembly 10 19 through such incision, or opening. Thereafter, prior to introduction of the auxiliary instrument I thro~gh the_assembly ~1 10, the lateral and non-rotating lever 33 is contacted by the ~2 finger or thumb of the surgeon and moved from the position shown ~3 in Fig. 3, backwardly, to the position shown in Fig. 3A.
,4 Accordingly, as the control 33 is manipulated, the teeth 21 in ,5 the ring 21A will travel across the companion inter-engaging teeth 20 in the teeth configuration 22 of 7 '5;~
~ 2068~81 1 `\the gear member 19, such that the first elongate cylindrical member 2 12 moves non-rotatably and laterally away from the no-go shoulder 3 27 on the cylindrical extension 26. Because the first and second 4 cylindrical members 12, 13 are attached one to another by means of the securements 30 at the distal end of the assembly 10" movement 6 of the first elongate cylindrical member 12 relative to the second 7 member, 13, will cause the sleeve portion 2S flexing members 23 to 8 be urged radially outwardly from the cylindrical member 12 from the 9 retracted-outer diameter of position 17 (Fig. 1) to the expanded o outer diameter of 18 (Fig. 2). In the position shown in Fig. 2, 1 the surgical sleeve assembly 10 thus resists removal from the 2 abdominal wall W in the cavity, during surgery.
3 The apparatus may be moved from the position shown in ~ig. 2 4 to the position shown in ~ig. 1 by reversing the procedure described above, and the assembly 10 completely withdrawn from the 6 abdominal wall W.
7 Although the invention has been described in terms of 8 specified embodiments which are set forth in detail, it should be 9 understood that this is by il~ustration only and that the invention O is not necessarily limited thereto, since alternative embodiments :1 and operating techniques will become apparent to those skilled in 2 the art and view of the disclosure. Accordingly, modifications are :3 contemplated which can be made without departing from the spirit of 4 the described invention.
Claims (9)
1. A surgical sleeve assembly for insertion of a surgical instrument into a bodily cavity through an incision in a body, the sleeve assembly comprising:
a housing;
a first cylindrical member coupled to the housing and including a radially expandable member thereon for selective expansion to resist removal of the sleeve assembly from the bodily cavity;
a second cylindrical member concentrically disposed within the first cylindrical member and secured thereto, the second cylindrical member having a passage extending therethrough for passage of the surgical instrument;
a lever carried by the housing and coupled to one of the first and second cylindrical members wherein manipulation of the lever causes relative movement therebetween and the expansion of the radially expandable member; and seal means carried in the passage for minimizing escape of fluids from the bodily cavity.
a housing;
a first cylindrical member coupled to the housing and including a radially expandable member thereon for selective expansion to resist removal of the sleeve assembly from the bodily cavity;
a second cylindrical member concentrically disposed within the first cylindrical member and secured thereto, the second cylindrical member having a passage extending therethrough for passage of the surgical instrument;
a lever carried by the housing and coupled to one of the first and second cylindrical members wherein manipulation of the lever causes relative movement therebetween and the expansion of the radially expandable member; and seal means carried in the passage for minimizing escape of fluids from the bodily cavity.
2. The surgical sleeve assembly according to claim 1 wherein the lever is coupled to the first cylindrical member by gear teeth on the first cylindrical member and interengaging gear teeth on the lever.
3. The surgical sleeve assembly according to claim 1 wherein the radially expandable member comprises a series of serrated flexing members formed on the first cylindrical member.
4. The surgical sleeve assembly according to claim 1 wherein the seal means is a lip seal.
5. A surgical sleeve assembly for insertion of a surgical instrument into a bodily cavity through an incision in a body, the sleeve assembly comprising:
a housing;
a first cylindrical member coupled to the housing and including a series of radially expandable flexing members for selective expansion to resist removal of the sleeve assembly from the bodily cavity;
a second cylindrical member concentrically disposed within the first cylindrical member and secured thereto, the second cylindrical member having a passage extending therethrough for passage of the surgical instrument;
a lever pivotally coupled to the housing and coupled to one of the first and second cylindrical members to selectively cause relative movement therebetween and the expansion of the radially expandable member; and seal means carried in the passage for minimizing escape of fluids from the bodily cavity.
a housing;
a first cylindrical member coupled to the housing and including a series of radially expandable flexing members for selective expansion to resist removal of the sleeve assembly from the bodily cavity;
a second cylindrical member concentrically disposed within the first cylindrical member and secured thereto, the second cylindrical member having a passage extending therethrough for passage of the surgical instrument;
a lever pivotally coupled to the housing and coupled to one of the first and second cylindrical members to selectively cause relative movement therebetween and the expansion of the radially expandable member; and seal means carried in the passage for minimizing escape of fluids from the bodily cavity.
6. The surgical sleeve assembly according to claim 5 wherein the lever is coupled to the first cylindrical member by gear teeth on the first cylindrical member and interengaging gear teeth on the lever.
7. The surgical sleeve assembly according to claim 5 wherein the seal means is a lip seal.
8. A surgical sleeve assembly for insertion of a surgical instrument into a bodily cavity through an incision in a body, the sleeve assembly comprising:
a housing;
a first cylindrical member coupled to the housing and including a series of radially expandable flexing members for selective expansion to resist removal of the sleeve assembly from the bodily cavity;
a gear member carried by the first cylindrical member;
a second cylindrical member concentrically disposed within the first cylindrical member and secured thereto, the second cylindrical member having a passage extending therethrough for passage of the surgical instrument;
a lever pivotally mounted to the housing and having gear teeth thereon for interengagement with the gear member on the first cylindrical member to selectively cause relative motion therebetween and the expansion of the radially expandable flexing members; and a lip seal carried in the passage for minimizing escape of fluids from the bodily cavity.
a housing;
a first cylindrical member coupled to the housing and including a series of radially expandable flexing members for selective expansion to resist removal of the sleeve assembly from the bodily cavity;
a gear member carried by the first cylindrical member;
a second cylindrical member concentrically disposed within the first cylindrical member and secured thereto, the second cylindrical member having a passage extending therethrough for passage of the surgical instrument;
a lever pivotally mounted to the housing and having gear teeth thereon for interengagement with the gear member on the first cylindrical member to selectively cause relative motion therebetween and the expansion of the radially expandable flexing members; and a lip seal carried in the passage for minimizing escape of fluids from the bodily cavity.
9. The surgical sleeve assembly according to claim 8 wherein the gear member on the first cylindrical member comprises a helically threaded ring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US07/705,110 US5217451A (en) | 1991-05-24 | 1991-05-24 | Gear activated trocar assembly |
| US750,110 | 1991-05-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2068481A1 CA2068481A1 (en) | 1992-11-25 |
| CA2068481C true CA2068481C (en) | 1996-04-16 |
Family
ID=24832082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002068481A Expired - Lifetime CA2068481C (en) | 1991-05-24 | 1992-05-12 | Gear activated surgical sleeve assembly |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US5217451A (en) |
| EP (1) | EP0515220A1 (en) |
| JP (1) | JP3118311B2 (en) |
| AU (1) | AU659826B2 (en) |
| CA (1) | CA2068481C (en) |
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-
1991
- 1991-05-24 US US07/705,110 patent/US5217451A/en not_active Expired - Lifetime
-
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- 1992-03-23 AU AU13131/92A patent/AU659826B2/en not_active Ceased
- 1992-05-12 CA CA002068481A patent/CA2068481C/en not_active Expired - Lifetime
- 1992-05-22 EP EP92304680A patent/EP0515220A1/en not_active Withdrawn
- 1992-05-25 JP JP04132277A patent/JP3118311B2/en not_active Expired - Lifetime
-
1994
- 1994-04-06 US US08/223,840 patent/US5549595A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2068481A1 (en) | 1992-11-25 |
| US5549595A (en) | 1996-08-27 |
| JP3118311B2 (en) | 2000-12-18 |
| EP0515220A1 (en) | 1992-11-25 |
| AU659826B2 (en) | 1995-06-01 |
| JPH05146448A (en) | 1993-06-15 |
| US5217451A (en) | 1993-06-08 |
| AU1313192A (en) | 1992-11-26 |
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| EEER | Examination request | ||
| MKEX | Expiry | ||
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Effective date: 20120512 |