Source: http://www.google.com/patents/US6004337?dq=6,704,032
Timestamp: 2016-12-05 12:43:22
Document Index: 727083662

Matched Legal Cases: ['art 336', 'art 338', 'arts 336', 'art 336', 'art 338', 'art 503']

Patent US6004337 - Apparatus for developing an anatomic space for laparoscopic procedures with ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsApparatus for creating an anatomic space in tissue in a body of a patient using a cannula with proximal and distal extremities and a bore extending therethrough to provide an open end. A balloon having an inflated space is provided. The balloon is capable of assuming collapsed and inflated conditions....http://www.google.com/patents/US6004337?utm_source=gb-gplus-sharePatent US6004337 - Apparatus for developing an anatomic space for laparoscopic procedures with laparoscopic visualizationAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6004337 APublication typeGrantApplication numberUS 08/990,385Publication dateDec 21, 1999Filing dateDec 15, 1997Priority dateJun 2, 1992Fee statusPaidPublication number08990385, 990385, US 6004337 A, US 6004337A, US-A-6004337, US6004337 A, US6004337AInventorsMaciej K. Kieturakis, Helmut Kayan, Jan M. Echeverry, Thomas A. Howell, Kenneth H. Mollenauer, James E. JervisOriginal AssigneeGeneral Surgical Innovations, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (90), Referenced by (28), Classifications (6), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetApparatus for developing an anatomic space for laparoscopic procedures with laparoscopic visualization
As described in said copending application, Ser. No. 07/968,201, filed on Oct. 29, 1992, the cannula 302 is adapted to receive the tunneling device or blunt obturator device 303 which is generally of the type described hereinbefore in the present application. This device 303 consists of the blunt obturator 306 having a blunt tip 331 which is generally olive-shaped as shown (see FIG. 41) and is formed of a suitable material such as plastic. The olive-shaped tip 331 is molded on the distal extremity 332 of a rod or a shaft 333 formed of a suitable material such as stainless steel. The blunt tip 331 is sized so that its outside diameter is slightly less than the inside diameter of the cannula tube 321. The proximal extremity 334 of the rod or shaft 333 has mounted thereon a handle part 336 of a handle assembly 337 which includes a second handle part 338. The handle parts 336 and 338 are adapted to mate with each other and are detachably connected in a manner described in copending application Ser. No. 07/968,201 filed Oct. 21, 1992 by the use of latch means (not shown) adapted to be actuated by spring-operated latch members 339 disposed on opposite sides of the handle part 336 and adapted to be engaged by the fingers of the hand holding the handle assembly 337. The second handle part 338 forms a part of the introducer device 307 and is mounted on the proximal extremity 341 of an introducer member 342 formed of a suitable material such as plastic. The introducer member 342 is provided with a distal extremity 343 and has a bore 344 extending from the proximal extremity to the distal extremity through an end surface 346 (see FIG. 41) which is inclined at a suitable angle, as for example approximately 45° proximally from the horizontal axis for the bore 344. The bore 344 is sized so it can slidably receive the shaft 333.
The skin seal assembly 311 generally can be of the type described in copending application Ser. No. 08/124,333 filed Sep. 20, 1993, and as described therein consists of a screw body 350 formed of a suitable material such as plastic having a helical thread 351 and a scalloped flange 352. A resilient insert 353 is disposed in the screw body 351 and is formed of a suitable resilient material such as silicone. The insert 353 is provided with a bore 354 extending therethrough. A collect 357 having slots 358 therein surrounds the insert 353 and is engaged by a collar 356 movable axially of the screw body 351 and is adapted to move the collect to compress the insert 353 to move the insert between a retaining position for the cannula tube 321 extending through the bore 354 to retain the cannula 302 in a desired longitudinal position with respect to the skin seal assembly 311 and a releasing position in which the cannula 302 can be slidably moved longitudinally inwardly or outwardly with respect to the skin seal 311. The collar 356 is provided with an annular shoulder 359 having circumferentially spaced-apart slots 360 therein which are used for a purpose hereinafter described. As explained in copending application Ser. No. 08/124,333 filed Sep. 20, 1993, means is provided to restrain rotation of the collar 356 with respect to the collect 357 and includes longitudinally extending keys 355 spaced 180° apart.
The balloon cover assembly 316 consists of a semi-rigid tube 381 formed of a suitable material such as plastic and is provided with proximal and distal extremities 382 and 383. It is provided with a bore 384 (see FIG. 42) which extends from the proximal extremity 382 to the distal extremity 383. The tube 381 is provided with a weakened region in the form of a partial slit 386 extending from the distal extremity 383 to the proximal extremity 382 of the tube 381 on the bottom side of the tube 381 as viewed in FIG. 40 (also see FIG. 42). The tube 381 is provided with a proximal end wall 387 which extends at a suitable angle, as for example 45° proximally with respect to the axis of the bore 384.
An upwardly extending fin 397 is formed on the body 393 substantially equidistant from the wings 396 in a direction generally perpendicular to the plane in which the wings 396 lie. The fin 397 is relatively narrow and is provided with an upper surface 378 having notches 401 and 402 therein. A vertically extending wall 406 is formed as a part of the fin 397 and extends generally in a direction which is perpendicular to the plane of the wings 396. The wall 406 extends in a direction at right angles to the fin 397 and has a gradually increasing thickness from the top to the bottom ends of the wall (see FIG. 46). The body 393 is provided with a pair of spaced-apart holes 407 spaced approximately 90° apart and 45° from each side of the fin 397. An elongate slot 408 is formed in the body 393 and is generally in alignment with the fin 397. A pair of camming slots 411 are provided on opposite sides of the body 393 in the wings 396 adjacent the distal extremities of the wings adjacent the body. The camming slots 411 are provided with inclined camming surfaces 412.
The pushbutton 556 is provided with a bore 561 which is sized so that it can receive the distal extremity 542 of the guide rod 541. The pushbutton is provided with sideways extending skirts 562 extending 180° with respect to each other and which are provided with distally and inwardly extending camming surfaces 563 which terminate at a tip 564 that is generally V-shaped as shown in FIG. 51. The tip 564 is formed so that it is adapted to enter into the slot 536 formed by the U-shaped members 531 and 532. Thus, when the pushbutton 556 is depressed, the tip 564 will enter the slot 536 in a progressive manner to urge them apart so that the camming surfaces 563 carried thereby engage the U-shaped latch members 531 and 532 in regions just above and below the guide rod 541 so that the guide rod 541 is released by the U-shaped latch members 531 and 532 permitting it to be pulled out of the handle part 503. Release of the guide rod 541 makes it possible to separate the guide rod 541 from the remainder of the balloon dissection apparatus 501 so that the handle assembly 502 and the other parts carried thereby can be separated from the guide rod. Thereafter, the guide rod 541, the balloon 361 and the balloon cover assembly 316 can be disposed of. The other parts of the apparatus can be reutilized after appropriate sterilization. In order to ensure that the other parts survive sterilization, it may be desirable to form the plastic reusable parts of a suitable plastic such as a polysulfone.
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