US20050107815A1 - Penetrating tip for trocar assembly - Google Patents

Penetrating tip for trocar assembly Download PDF

Info

Publication number
US20050107815A1
US20050107815A1 US10/120,895 US12089502A US2005107815A1 US 20050107815 A1 US20050107815 A1 US 20050107815A1 US 12089502 A US12089502 A US 12089502A US 2005107815 A1 US2005107815 A1 US 2005107815A1
Authority
US
United States
Prior art keywords
recited
base
penetrating tip
instrument
apex
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
Application number
US10/120,895
Other versions
US6884253B1 (en
Inventor
Richard McFarlane
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teleflex Medical Inc
Original Assignee
Taut Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to US20439600P priority Critical
Priority to US09/859,009 priority patent/US6478806B2/en
Application filed by Taut Inc filed Critical Taut Inc
Priority to US10/120,895 priority patent/US6884253B1/en
Assigned to TAUT, INC. reassignment TAUT, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MCFARLANE, RICHARD H.
Application granted granted Critical
Publication of US6884253B1 publication Critical patent/US6884253B1/en
Priority claimed from US11/115,094 external-priority patent/US8398666B2/en
Publication of US20050107815A1 publication Critical patent/US20050107815A1/en
Assigned to PILLING WECK INCORPORATED reassignment PILLING WECK INCORPORATED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TAUT INC.
Assigned to TELEFLEX MEDICAL INCORPORATED (A CALIFORNIA CORPORATION) reassignment TELEFLEX MEDICAL INCORPORATED (A CALIFORNIA CORPORATION) MERGER (SEE DOCUMENT FOR DETAILS). Assignors: PILLING WECK INCORPORATED (A DELAWARE CORPORATION)
Assigned to JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT reassignment JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TELEFLEX MEDICAL INCORPORATED
Application status is Active legal-status Critical
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/34Trocars; Puncturing needles
    • A61B17/3417Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
    • A61B2017/3454Details of tips
    • A61B2017/3456Details of tips blunt

Abstract

A tissue penetrating instrument of the type used in the medical field and which may or may not be embodied in the form of an obturator associated with a trocar assembly, wherein the instrument includes an elongated shaft having a penetrating tip mounted on one end thereof. The penetrating tip includes a base secured to the one end of the shaft and a distal extremity spaced longitudinally outward from the base and formed into an apex which may be defined by a point or other configuration specifically structured to facilitate penetration or puncturing of bodily tissue. The apex may be substantially aligned with a linear extension of the central longitudinal axis of the shaft or alternatively, may be spaced laterally outward or off-set from the central longitudinal axis of the shaft. The penetrating tip further includes an exterior surface extending continuously between the apex and the base and configured to facilitate puncturing of the tissue and an enlargement of an access opening formed in the tissue, in a manner which facilitates separation of the tissue and minimizes cutting, severing or otherwise damaging the contiguous bodily tissue surrounding the access opening.

Description

    CLAIM OF PRIORITY
  • This application is a continuation-in-part (CIP) of and a claim of priority it made to currently pending patent application having Ser. No. 09/859,009 which was filed in the U.S. Patent and Trademark Office (PTO) on May 16, 2001, which application is based on and claims priority under 35 U.S.C. Section 119(e) to an earlier provisional patent application filed in the U.S. PTO on May 16, 2000 and having Ser. No. 60/204,396, all of which are incorporated herein in their entireties by reference.
  • BACKGROUND OF THE INVENTION
  • 1. Field of the Invention
  • The present invention is directed towards a medical instrument of the type structured for use in laparoscopic A and/or endoscopic surgery such as, but not limited to, a trocar assembly which includes an obturator having an elongated shaft with a penetrating tip formed on one end thereof. The penetrating tip includes an exterior surface configuration structured to facilitate the forming of an access opening in a patient's bodily tissue in a manner which requires a minimum application of an inwardly directed, linear pushing force on the instrument, but which nevertheless results in the dilation of body tissue. The configuration of the inventive penetrating tip is at least partially characterized by a perpendicular cross-section of the exterior surface having a substantially elliptical configuration along at least a majority of the tip.
  • 2. Description of the Related Art
  • In the past when patients were in need of certain routine surgical operations, it was common for the medical doctor(s) to make a substantially large incision into, through and across the patient's abdominal cavity in order to reach the affected ad organ(s) and/or other body tissue. While the size of the incision made would vary dependent upon the type of surgery needed, for some surgeries it was relatively common to make a large incision, which would be closed using conventional techniques upon completion of the surgical procedure. However, the making of large incisions in the patient's body itself causes trauma and the period of time required for the patient to completely heal was and is significant. In addition, the pain or discomfort endured by the patient during the recuperative period was a serious problem.
  • Because of such disadvantages, new surgical procedures have been developed, as well as instruments utilized in the support of such procedures, which are widely used today. The most common and popular is laparoscopic and/or endoscopic surgery, wherein one or more small openings, utilizing appropriate penetrating instruments, are formed to provide access into the intended body cavities. A trocar assembly is typically used to create and maintain the small opening extending across the abdominal wall and into the body cavity and also to provide a channel through which instruments can be inserted and manipulated to perform the surgery inside the body cavity. As part of these procedures, the abdomen is inflated with an insufflation gas to maintain the abdomen in a distended state, and the trocar assembly usually carries one or more valves to form seal(s) to maintain insufflation. Laparscopic surgery has proven effective in greatly reducing the healing period for patients who have had to undergo surgery and have resulted in significantly less pain and discomfort to the patient.
  • The medical instruments used during laparscopic surgery to form the one or more small access openings and during the surgery itself are commonly referred to as trocars or trocar assemblies. Typically, the trocar assembly includes a trocar having a housing and a sleeve or cannula and separately, an obturator which is slidably inserted into the trocar housing and cannula. In almost all cases, the obturator is formed to have a sharply pointed tip, usually defined by a multi-sided pyramide-like configuration, and serves as the penetrating instrument in that upon being inserted and positioned within the lumen of the cannula or trocar sleeve, the sharp pointed tip is exposed at the distal end of the trocar sleeve. The exposed sharpened tip of the obturator is forced into the patient's skin and through all of the various layers of body tissue with the trocar sleeve being forced through the perforation formed by the sharpened obturator tip. Typically, significant pressure must be applied once the peritoneum is reached, i.e., the toughened lining or membrane that defines the exterior wall of the body cavity, in order to penetrate through it and gain access to the body cavity and organs contained therein, in order that laparoscopic surgery may be performed. Once access to the body cavity is established, the obturator is typically withdrawn, leaving the trocar sleeve or cannula as a channel or access passage to the body cavity and intended organ. In some laparoscopic surgical techniques, the obturator or other sharp penetrating instrument may be used without a trocar, i.e., as a “stand alone” device to puncture through the skin and underlying bodily tissues. In such cases, it is understood that once a small access opening is formed, a separate access cannula, catheter or other surgical instrument is inserted into communication with the now accessed body cavity and/or organ.
  • While the design of trocars currently available on the market, and the obturators with their sharpened penetrating tips in particular, are capable of quickly forming the small access openings and channels into a patient's abdominal cavity, there are potentially serious drawbacks. Specifically, and as described briefly above, a significant amount of pressure—namely, an inwardly directed pushing force—must typically be applied to the trocar assembly in order to pierce through and penetrate the tough lining or membrane adjacent to and protecting the patient's body cavity and internal organs housed therein. Especially in forming the first access opening, where the surgeon does not have the benefit of observation via a camera instrument disposed within a trocar in a previously formed opening, the pressure applied to penetrate into the body cavity may momentarily result in the sharpened obturator tip extending too far into the cavity, such that an organ may inadvertently be nicked or scratched, without the surgeon's knowledge. If left untreated, such events can result in the rise of an infection and the patient may undergo serious complications, including the possibility of death or further surgery. Less significantly, the sharp pointed tips of the obturators can cause other damage, in terms of cutting small blood vessels and/or other delicate structures found within the body tissue surrounding the access opening during its formation.
  • To address this drawback, some in the art have endeavored to provide the trocar assembly with a protective shield, which in some cases, is intended to automatically move into a protective covering relation over the sharpened obturator tip once it has pierced into the abdominal cavity. Others have similarly noted this problem and attempted to provide the trocar with a sharpened tip that can automatically retract once it has penetrated the abdominal cavity or with some sort of visual signal to indicate that the empty space of the abdominal cavity has been reached. It is believed, however, that all such efforts have resulted in trocar assemblies that are overly complicated, difficult to implement and/or repair, and which may not reliably achieve the intended goal, especially in those situations where the surgeon is making the very first access opening and is unable to observe the body cavity with the aid of a small camera instrument.
  • Accordingly, there is a need in the medical field for an improved instrument which may be used independently, or more preferably, as part of a trocar assembly and/or associated components such as, but not limited to, a trocar sleeve, etc. to forming an access opening into a patient's body cavity in a manner which requires minimum application of an inwardly directed, linear pushing force. If any such improved instrument were developed, it should be structured to include a penetrating tip that facilitates clean formation of a small access opening extending through a patient's body tissue without severing blood vessels or causing similar damage to the outer tissues being penetrated. Ideally, any such improved instrument would have a penetrating tip that is cooperatively structured and configured relative to the distal end of the trocar sleeve so as to effectively enlarge the access opening, as the penetrating instrument is advanced there-through and into communicating relation with a predetermined body cavity, while simultaneously preventing pieces of the body tissue from entering into the internal passage of the trocar sleeve. Moreover, if any such improved instrument were developed, it should also be structured to allow for puncturing into the peritoneum or tough lining of the body cavity with little or no risk that an organ within the body cavity would be punctured or nicked.
  • SUMMARY OF THE INVENTION
  • The present invention is intended to address these and other needs in the art and as such, is directed towards a penetrating instrument of the type used in laparoscopic, A endoscopic or like, minimally invasive surgical procedures, and which is preferably, but not necessarily, embodied in a trocar assembly. In such embodiment, the trocar assembly includes a trocar housing and a trocar sleeve or cannula having an open distal end communicating with a centrally disposed lumen or passage within the trocar sleeve and within the housing. The trocar assembly further includes an obturator comprising an elongated shaft having a proximal end and an oppositely disposed distal end on which a penetrating tip is either formed or secured. Whether or not embodied in a trocar assembly, the elongated shaft and the penetrating tip of the obturator are specifically structured to create a small access opening in the body wall or outer tissue of a patient so as to establish communication with an internal body cavity or organ on which a surgical procedure is to be performed.
  • The penetrating instrument of this invention is designed and structured to effectively create the small access opening by penetrating through the skin and underlying body tissue of a patient in a manner which serves to separate and enlarge the created access opening, as the penetrating tip, shaft and/or trocar sleeve pass there-through and into the patient's abdominal body cavity. As explained in greater detail herein, the overall structure, configuration, dimension and disposition of the penetrating instrument is such as to accomplish an effective separation of the bodily tissue being penetrated with a minimal application of an inwardly directed linear force. In doing so, the structure of the penetrating instrument dilates the outer tissue in a manner which minimizes damage to the tissue. Also, the possibility of inadvertently injuring blood vessels, etc. is minimized, as is the possibility of injuring internal organs once the instrument's penetrating tip enters the intended body cavity. More specifically, the instrument of the present invention, whether associated with a trocar assembly or used independently thereof, comprises an obturator having an elongated shaft and a penetrating tip integrally formed on or otherwise secured to the distal end thereof. When in the preferred embodiment of a trocar assembly, the penetrating tip is cooperatively disposed, dimensioned and configured relative to and/or with the trocar sleeve, and in particular, with the open distal end thereof. The penetrating tip includes a base and a distal extremity configured to define an apex. It is pointed out, here, that the term “apex” is meant to include a variety of different configurations, which may vary from a sharpened point to a tapered locale, as may be defined by the converging of the penetrating tip's exterior surface from a base thereof and extending continuously to the distal extremity or apex. In a preferred embodiment of the present invention, described in greater detail herein, the apex of the penetrating tip is disposed coincident to a central longitudinal axis of the elongated obturator shaft. Other embodiments of the present invention contemplate the apex of the penetrating tip being spaced laterally outward or in an off-set, somewhat eccentric position relative to the central longitudinal access of the elongated obturator shaft.
  • Although it may assume a variety of configurations as further described herein, the penetrating tip of this invention is preferably structured to facilitate the separation of the body tissue and penetration of the body cavity wall or lining in a manner which minimizes damage to the tissue and other risk of injury to the patient. More specifically, the penetrating tip includes an exterior surface, preferably extending between the base and the apex thereof, that comprises a cross section having a “substantially elliptical” configuration. The interior of the penetrating tip may include a variety of different structures, such as being solid, hollow or partially hollow. It is pointed out that the term “substantially elliptical” as used herein to describe the configuration of the cross section of the exterior surface of the penetrating tip is not meant to define a true or precise ellipse, alone. Rather, the term “substantially elliptical” as used herein is meant to include a variety of different configurations, all of which substantially conform to an ellipse. More specifically, the outer circumference or sectional configuration of the exterior surface of the penetrating tip, preferably taken along a plane perpendicular to the central longitudinal access of the shaft, may include one or more curvilinear segments, a combination of curvilinear segments and linear segments or a plurality of linear segments, wherein the various linear and/or curvilinear segments are collectively interconnected in a closed or continuous configuration.
  • Accordingly, the structure of the instrument of the present invention, whether or not embodied in a trocar assembly, includes an elongated shaft having a penetrating tip with an exterior surface configuration and/or other components thereof, which are cooperatively dimensioned, configured, and disposed to more safely facilitate the formation of an access opening and the dilation of the surrounding bodily tissue during the insertion of the penetrating instrument into the patient. More specifically, the preferred exterior surface configuration of the penetrating tip enters the designated bodily tissue in a manner which minimizes damage and/or cutting or severing of the tissue during the passage of the penetrating tip, as well as an adjacent portion of the shaft and/or trocar sleeve, through the created access opening.
  • The objects, features and advantages of the present invention noted above, as well as others, will become more clear when the drawings as well as the detailed description of the invention in various embodiments, below, are taken into consideration.
  • BRIEF DESCRIPTION OF THE DRAWINGS
  • For a fuller understanding of the nature of the present A invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:
  • FIG. 1 is a perspective view of a penetrating instrument according to the present invention embodied in a trocar assembly wherein the distal extremity or apex of the penetrating tip is disposed coincident to a central longitudinal axis of the instrument shaft.
  • FIG. 2 is a perspective view of another penetrating instrument according to the present invention which is also embodied in a trocar assembly wherein the distal extremity or apex of the penetrating tip is disposed in off-set relation to the central longitudinal axis of the instrument shaft.
  • FIG. 3 is a perspective view of another penetrating instrument shown in partial cutaway to better illustrate a penetrating tip associated with the present invention.
  • FIG. 4 is a top view of the embodiment of FIG. 3.
  • FIG. 5 is a side view of the embodiment of FIGS. 3 and 4.
  • FIG. 5A, 5B, 5C and 5D are sectional views of the embodiment shown in FIG. 5 and taken along lines 5A-5A, 5B-5B, 5C-5C, and 5D-5D, respectively.
  • FIG. 6 is a perspective view of a penetrating instrument, similar to that of FIG. 2, but shown in partial cutaway to better illustrate the penetrating tip associated therewith.
  • FIG. 7 is a top view in partial cutaway of the embodiment of FIG. 6.
  • FIG. 8 is a side view in partial cutaway of the embodiment of FIGS. 6 and 7.
  • FIG. 8A, 8B, 8C, and 8D are sectional views of the embodiment shown in FIG. 8 and taken along lines 8A-8A, 8B-8B, 8C-8C, and 8D-8D, respectively.
  • FIG. 9 is a top view of another embodiment of a penetrating instrument according to the present invention including a penetrating tip and associated shaft, in partial cutaway.
  • FIG. 10 is a side view of the embodiment of FIG. 9.
  • FIG. 11 is a side view of a structural variation of the embodiment of FIG. 10.
  • FIG. 12 is a front end view of the embodiment of FIGS. 9 through 11.
  • FIG. 13 is a schematic representation of a substantially elliptical configuration representative of a transverse or perpendicular cross-section taken from the exterior surface of a preferred penetrating tip according to the present invention.
  • FIG. 13A is a schematic representation of another embodiment of a substantially elliptical configuration representative of a cross section taken from the exterior surface of another penetrating tip according to the present invention.
  • FIG. 13B is a schematic representation of yet another embodiment of a substantially elliptical configuration representative of a cross section taken from the exterior surface of another penetrating tip according to the present invention.
  • FIG. 13C is a schematic representation of yet another embodiment of a substantially elliptical configuration representative of a cross section taken from the exterior surface of another penetrating tip according to the present invention.
  • FIG. 14 is a longitudinal view in partial section and cutaway of yet another preferred embodiment of the present invention showing the penetrating tip in an operative position relative to a trocar sleeve.
  • FIG. 15 is a perspective view in partial cutaway of yet another preferred embodiment of the present invention directed to structural components associated with a trocar assembly embodying the instrument of the present invention.
  • Like reference numerals refer to like parts throughout the several views of the drawings.
  • DETAILED DESCRIPTION OF THE INVENTION IN PREFERRED EMBODIMENTS
  • As shown in the accompanying Figures, the present invention is directed towards a medical instrument of the type structured for use in minimally invasive surgery, such as laparoscopic or endoscopic surgery. Moreover, the instrument of the present invention is preferably, but not necessarily, embodied in a trocar assembly, such as, but in no way limited to, the trocar assemblies shown in FIGS. 1, 2, 12, 14 and 15 and generally indicated as 10 and 10′, which assemblies depict a distinctive shape developed by and proprietary to Taut, Inc. of Geneva, Ill.
  • A trocar assembly, whether that indicated by reference numeral 10, 10′ or another, typically includes a trocar housing 12, which may include a connector structure 14 communicating with the interior of the housing 12 and structured to establish interconnection with a supply of fluid, such as carbon dioxide gas, used to inflate a body cavity as typically performed during laparoscopic or endoscopic surgery. Trocar assembly 10, 10′ also includes an elongated cannula or trocar sleeve 16 dimensioned and structured to removably receive an obturator 20, perhaps best shown in FIGS. 3-5, comprising an elongated shaft 26, along the interior, centrally disposed passage or lumen associated with the sleeve 16. The elongated shaft 26 has a penetrating tip, generally indicated as 22, secured to the distal end of shaft 26 and extending outwardly from a distal open end 18 of the trocar sleeve 16.
  • It is pointed out that the present invention can be utilized with trocar assemblies, such as 10 and 10′ as well as others. While the trocar assemblies shown in FIGS. 1, 2 and 15 appear to be substantially equivalent structures, they differ from one another primarily in the structural configuration of the obturators 20 and 20′, and mostly in the structure of the respective penetrating tips 22 and 22′. Also, in each of the embodiments of FIGS. 1, 2 and 15 it is preferred that a mounting hub 24 be connected or secured to a proximal end of the trocar sleeve 16, adjacent and/or contiguous to the trocar housing 12. As explained hereinafter with primary reference to FIG. 15, the mounting hub 24, secured to a proximal end of the trocar sleeve 16, is structured for mounting or interconnection with an end portion or gripping portion 25 secured to a proximal end 25′ of the elongated shaft 26 defining the obturator 20.
  • As indicated above, the preferred embodiments of the present invention includes the elongated shaft 26, at least partially defining the obturator 20. The shaft 26 or 26, has a distal end integrally formed with or otherwise fixedly connected or secured to the corresponding penetrating tip 22 or 22′. The elongated shaft 26 also has a proximal end 25′ which is oppositely disposed to the penetrating tip 22 and which is preferably secured to the gripping portion 25, as noted above and in FIG. 15. While the elongated shafts 26 and 26′ are primarily disclosed as including a solid material construction, it is emphasized that either may include a substantially hollow, elongated configuration terminating in the respective penetrating tip 22 or 22′. Alternatively, the penetrating tips 22, 22,′ of the various embodiments may be formed to be substantially or at least partially hollow. It is to be understood that the penetrating tips 22, 22′ may have a variety of other interior structures, such as being solid or at least partially solid.
  • With primary reference now to the embodiment of FIG. 1, FIGS. 3 through 5, and FIG. 14, the shaft 26 of the present invention comprises the penetrating tip 22 having a base 28 integrally formed with or otherwise fixedly secured to the distal end of shaft 26. The opposite end of the penetrating tip 22 terminates in a distal extremity generally indicated as 30. Further, the penetrating tip 22 has an exterior surface extending continuously between the base 28 and the distal extremity 30. The distal extremity 30 may be more specifically defined as an “apex” 32 which may be structured to have, but does not necessarily require, a slightly blunted configuration. However, the apex 32 may also assume a variety of other configurations, such as that shown in the embodiment of FIG. 2 and indicated as 32′. That is, while the term “point” may be used to describe an apex 32, this is not necessarily meant to define a true, sharply point structure. On the contrary, in the most preferred embodiments, the apex 32 and/or 32′ is structured to be sufficiently blunt to eliminate or significantly reduce the danger of inadvertent puncturing of a patient's organ once the penetrating tip has passed through exterior bodily tissue and entered into the patient's abdominal cavity. In that the apex 32 and 32′ of the inventive penetrating tip 30 may assume a variety of different structural configurations, all of which are intended to facilitate the clean, efficient passage through the outer body wall of a patient, the term apex, rather than point, is used to generically and more accurately describe each of the plurality of tip configurations. Further, the apex 32, 32′, regardless of its specific shape, may be defined as a convergent locale of the exterior surface 40 of each of the corresponding penetrating tips 22, 22′, as the exterior surface 40 extends from the respective bases 28, 28′ to and including the distal extremity 30, 30′.
  • Still referring to FIGS. 1, 3 through 5 and 14, the invention in the more preferred embodiments comprise the apex 32 being disposed coincident with the central, longitudinal axis 27 of the elongated shaft 26, or more precisely, a linear extension 27′ of the central longitudinal axis 27. Further, at least one preferred embodiment comprises the exterior surface 40 including at least two surface segments 42 and 44. As shown in FIGS. 3 and 4, the surface segments 42 and 44 are at least minimally segregated by two at least partially, oppositely disposed and curved edge portions 46 and 48. The edge portions 46 and 48 may be specifically shaped or configured to define cutting and/or dilating edges and extend along at least a portion of the distance between the apex 32, 32′ and the base 28, 28′.
  • For example, the longitudinal curvilinear configuration of the surface segments 42 and 44 are preferably at least partially defined by a complex curve. In turn, the complex curvilinear configuration of each of the surface segments 42 and 44, as viewed longitudinally from the apex 32 to the base 28, comprises at least one substantially concave segment 49 and either a linear or minimally convex curve portion or section 49′, shown in FIG. 5. As a result, the overall configuration of the exterior surface of the penetrating tip 22 and its cooperative structuring with the apex 32 facilitates the forming and subsequent enlargement of an access opening in the body wall of a patient, without requiring a heavily applied, inwardly directed, linear pushing force. As such, the access opening is formed in a manner more of a dilating action, which minimizes cutting of and/or other damage to bodily tissue as the penetrating tip 22, as well as a portion of the shaft 26 and/or sleeve 16 passes through the access opening into a patient's abdominal cavity or other anatomical structure.
  • In the more preferred embodiments of the present invention, the exterior surface 40 of the penetrating tip 22 has a transverse or perpendicular cross section which is substantially elliptical. It is to be understood that the term “substantially elliptical,” when referring to the cross sectional configuration of the exterior surface 40 or the transverse circumferential configuration thereof, is not meant to be limited to a true or precise elliptical configuration, only. To the contrary, the substantially elliptical configuration of the penetrating tip 22 or 22′ may assume differently shaped exterior surfaces and yet still be included or intended for inclusion within the phrase “substantially elliptical,” as used herein.
  • To better illustrate this, reference will is now made to FIGS. 13, 13A, 13B and 13C. As represented therein, FIG. 13 is a schematic representation of a true or precise elliptical configuration, indicated as 100. This elliptical configuration or ellipse 100 includes a primary longitudinal dimension 102 and a primary transverse dimension 104. Upon reviewing the various embodiments of the penetrating tip disclosed herein (such as 22, 22′, 64, etc.), it will be noted that the size of the cross sectional configuration of the exterior surface 40 will change. In other words, the size of the cross section taken from any given penetrating tip 22, 22′, etc. will be larger or smaller dependent upon whether the section is taken closer to the apex 32 or closer to the base 28. This is due to the converging structure of the exterior surface 40 as it extends from the base 28 to the apex 32.
  • Therefore, with reference to FIG. 13, the term “substantially elliptical” configuration is meant to include variations in the shape of the sectional configuration of the exterior surface 40, due to the fact that either the primary longitudinal dimension 102 may be longer or shorter and/or the primary transverse dimension 104 may be longer or shorter. The result is a sectional configuration of the exterior surface 40, which while not precisely conforming to a precise elliptical configuration, schematically represented as 100, may still be considered a substantially elliptical configuration even though the overall shape is characterized by a flattened, elongated, oblong or other elliptical configuration having a variant shape.
  • In order to further clarify that the intended meaning of the term “substantially elliptical” when referring to the penetrating tip's exterior surface 40 can apply to varied equivalent shapes, reference is now made to FIGS. 13-A, 13-B and 13-C. It is emphasized that the schematic representations illustrated in these Figures are intended to be representative only of a plurality of possible “substantially elliptical” configurations which the exterior surface 40 may assume. In these Figures, a true or precise elliptical configuration is indicated in phantom lines and marked with reference numeral 100′ and the exterior surface is shown in a variety of different shapes as schematically represented at 40′, 40″ and 40′″ respectively, in FIGS. 13A, 13B and 13C. These Figures illustrate that the specific shape(s) of the representative exterior surface configurations 40′, 40″ and 40′″, etc. generally conform to the true elliptical configuration 100′, and therefore, are intended to be included within the generically descriptive term “substantially elliptical.” With specific reference to FIG. 13A, the exterior surface 40′ may include a plurality of linear segments 106 interconnected to one another to form a continuous, closed configuration. FIG. 13B is representative of an exterior surface 40″ including a plurality of plane curves, or more specifically, curvilinear segments 108 connected to a plurality of linear segments 106. The embodiment of FIG. 13C discloses the exterior surface 40′″ having at least one elongated plane curve or curvilinear segment 110 interconnected with at least one but preferably a plurality of linear segments 106 to collectively form a continuous, closed configuration.
  • In the various preferred embodiments of the penetrating tip 20, 20′, 64, etc., of the present invention, the cross sectional configuration of the exterior surface 40 is preferably oriented transverse or perpendicular to the linear extension 27′ of the central longitudinal axis 27 of the shaft 26. Also, the cross section or an infinite number of such cross sections extend along at least a majority of the length of the penetrating tip 22, as demonstrated by the schematic and representative cross-sectional configurations in FIGS. 5B, 5C and 5D. Again, it is to be emphasized that the cross sectional configurations of FIGS. 5B through 5D are schematic representations and may be defined by other than a true or precise or elliptical configuration such as that disclosed in, but not limited to, FIGS. 13A through 13C. Further by way of reference, the perpendicular cross-sectional configuration of the base 28, taken along the imaginary line 5A-5A, may be, but does not in all cases have to be, defined by a circumferential configuration in the form of a circle.
  • It is pointed out that some variation in the substantially elliptical configuration of the cross section of the exterior surface of the penetrating tip may also be due to the existence of the aforementioned, segregating edge portions 46 and 48. As set forth above, the structure of the edge portions 46 and 48 may vary as they may or may not be structured to serve as cutting edges. Accordingly, the opposite ends of each of the representative elliptical configurations shown in FIGS. 5B, 5C, and 5D may also be varied to more accurately represent the inclusion of the edge portions 46 and 48. These edges may vary in cross-sectional configuration from a true cutting edge, as best demonstrated in FIG. 3, to a more rounded configuration, as indicated by the representative elliptical shapes of FIGS. 5B, 5C and 5D.
  • The various embodiment of the present invention, however, will preferably provide for efficient penetration of the outer bodily tissue and passage there-through in a manner which minimizes the danger of inadvertent puncturing of internal organs. More specifically, such initial penetration and passage of the either of the tips 22 and 22′ as well as the respective shafts 26 and 26′ and/or sleeve 16 will ideally be accomplished by the exertion of only a minimal amount of a linearly directed, “pushing” force on the instrument. Instead, penetration may be facilitated by applying a twisting motion, and preferably a back and forth or “reciprocal twisting” motion, to the device. In the more preferred embodiment incorporating a somewhat blunted point or apex 32 or 32′, the chances are minimized of inadvertently puncturing and/or damaging an internal organ subsequent to the penetrating tip 22 or 22′ passing through the exterior bodily tissue and into the body cavity in which the organ is located. With primary reference now to the embodiment of FIGS. 2 and 6 through 8, one distinguishing structural feature is the location of the apex 32′ in an eccentric or laterally spaced, off-set relation to an imaginary co-linear extension of the central longitudinal axis of the shaft 26′. Accordingly, the exterior surface 40 comprises two surface segments 42′ and 441 which are non-symmetrical, in that surface segment 42′ has a significantly smaller overall dimension than that of the surface segment 44′. As a result, the base 28′ has a circumferential configuration preferably defined by an elongated ellipse, schematically represented in FIG. 8A and taken along lines 8A-8A of FIG. 8.
  • Similar to the embodiment of FIGS. 1 and 3 through 5, both of the exterior surface segments 42′ and 44′ have a longitudinal curvilinear configuration defined by a longitudinally oriented complex curve including at least a minimally concave portion 49″ and a linear portion 49′″. Similarly, the surface segments 42′ and 44′ are at least minimally segregated from one another through the provision of the elongated curved edges 46′ and 48′, extending from the apex 32′ towards the base 28′ and at least along a majority of the length of the penetrating tip 22′. The edges 46′ and 48′ may have a more rounded or transversely curved configuration than that of the embodiment of FIG. 3, thereby providing a somewhat “blunted” edge configuration 46′ and 48′ which, differs from the edge portions 46 and 48 of the embodiment of FIG. 3.
  • However, the exterior surface 40 of the embodiment of FIGS. 2 and 6 through 8 is structured to define an overall exterior surface configuration shaped to enlarge or at least partially dilate an access opening formed in the outer body wall by the penetrating tip 22′, while minimizing any cutting, severing or damaging of the contiguous bodily tissue surrounding the formed access opening. Such a preferred structural configuration is further demonstrated in FIGS. 8B, 8C and 8D which represent a transverse circumferential configuration of the exterior surface 40 as also being substantially elliptical, within the intended meaning of this term, as has been described herein.
  • As with the embodiment of FIGS. 1 and 3 through 5, the opposite ends of the representative elliptical configurations of the perpendicular cross-sections of the penetrating tip 22′ shown in FIGS. 8B, 8C, and 8D, may be more precisely represented by narrowing the opposite ends to more accurately represent the edges 46′ and 48′. Also, since the apex 32′ is laterally off-set from the central longitudinal axis of the shaft 26′, the apex 32′ is not centered or centrally coincident with any of the elliptically configured cross-sections represented in FIGS. 8A through 8D. To the contrary, in the embodiment of FIG. 5, the apex 32 is coincident to the linear extension of the central longitudinal axis of the shaft 26 and would therefore be substantially centered relative to the circular cross-section of the base 28, as shown in FIG. 5A, as well as the elliptically configured cross-sections of FIGS. 5B through 5D.
  • Another preferred embodiment of the penetrating instrument of the present invention is shown in FIGS. 9 through 12 and comprises an obturator 60 including an elongated shaft 62 having a penetrating tip 64 integrally formed with or otherwise secured to the distal end of shaft 62. Penetrating tip 64 includes a base 66, which in the preferred embodiments of FIGS. 9 through 12, is extended along a predetermined angular orientation of generally about 45 degrees relative to a central longitudinal axis of the shaft 62, schematically indicated as 68 in FIG. 10. The base 66 is integrally or otherwise attached to the distal end of the elongated shaft 62, as shown. The opposite end of the penetrating tip 64 terminates in a distal extremity generally indicated as 70, and more specifically, defined by an apex 72. One feature of this embodiment is the disposition of the apex 72 coincident with the central longitudinal axis 68 of the shaft 62, or more precisely, a linear extension 68′ of the central longitudinal axis 68.
  • Additional structural features of this preferred embodiment include the exterior surface 74 including longitudinally extending, curved exterior surface segments 76 and 78. Due at least in part to the angular orientation of the base 66, the exterior surface segments 76 and 78 have different lengths, as best shown in FIG. 10, and are non-symmetrical even though the apex 72 is disposed coincident with the central longitudinal axis 68 or the linear extension thereof 68′.
  • Referring now to both FIGS. 10 and 11, the exterior surface 74 of the penetrating tip 64, particularly including the exterior surface segments 76 and 78, can define an at least partially concave, convex and/or complex, longitudinal extending curve(s). As a result, the perpendicular cross-sectional configuration of the penetrating tip 64, such as along schematic cross-section lines 80 and 82, comprises a substantially elliptical configuration. These elliptical configurations of sections 80 and 82 are also meant to be schematically representative of a variety of different shapes intended to be included within the meaning of the generic term “substantially elliptical,” as has already been discussed in detail.
  • As noted, structural differences of the embodiment of FIGS. 9 through 12 include the apex 72 being coincident with the longitudinal axis 68, 681 of the shaft 62, rather than being off-set therefrom. In addition, the complex curve of at least one of the exterior surface segments 76 or 78 would preferably include an elongated concave configuration extending from the apex 70 to towards the base 66 in order to facilitate the penetrating capabilities of the penetrating tip 64. A concave configuration of one or both of the exterior surface segments 74 and 76 may be important, especially when the apex 72 assumes a more blunted shape as opposed to a sharpened point. It is further emphasized that the exterior surface 74, including the exterior surface segments 76 and 78 may vary from that shown in FIGS. 10 and 11. Accordingly, dependent upon the configurations of the exterior surface 74, any of an infinite number of perpendicular sections, such as those taken along schematic lines 80 and 82, will have the aforementioned substantially elliptical configuration. Also, the centers as at 80′ and 82′ of the respective elliptical configurations as shown in FIGS. 10 and 11 may be disposed along an imaginary straight line as at 86 and/or along an imaginary curved line as at 88.
  • As set forth above, the apex 72 may be somewhat blunted rather than a true sharpened point, and thereby, as illustrated in FIG. 11, be at least partially defined by an end ellipse 84. Again, the location of the centers 80′ and 82′ as well as the center 841 of the end ellipse 84 may be disposed along a straight line 86 or a curved line 88 depending, at least in part, on the overall exterior surface configuration 74, while the apex and/or the center point 841 of the end ellipse 84 remains coincident with the longitudinal axis 68, 68′. Naturally, as with the embodiments of FIGS. 1 through 8, the obturator 60 may be of the type to be used in combination with a trocar assembly generally indicated as 10 including the elongated trocar sleeve 16 as shown in both FIGS. 1 and 12.
  • Still referring to the embodiments shown in FIGS. 9 through 11, it is noted that the base 66, being angularly oriented at a preferred angle of 45 degrees relative to the longitudinal axis 68 and 68′, defines an elliptical configuration somewhat similar to that shown in the embodiment of FIG. 8A. The precise shape of the preferred elliptical configuration will, of course, vary, dependent on the angular orientation of the base 66 relative to the longitudinal axis 68 being greater or less than the preferred 45 degree angle of incline, as indicated.
  • Another feature of at least one preferred embodiment of the present invention is shown in FIG. 14, wherein the laparoscopic instrument is embodied in a trocar assembly 10 having a trocar sleeve 16 with an open distal end 18. As will also be explained with regard to the embodiment of FIG. 15, the elongated shaft 26 is positioned within the interior passage of the sleeve 16 and is longitudinally dimensioned to facilitate the positioning of the penetrating tip 22 in an operative position having a most preferred orientation. This operative position is at least partially defined by the penetrating tip 22 being disposed in a “closing” relation to the open distal end 18 so as to restrict or block the passage of any unwanted material, such as body tissue, from passing through the open distal end 18 into the interior of the sleeve 16. The aforementioned operative position may be further defined by the penetrating tip 22, and more specifically the base 28 thereof, having a common angular orientation relative to the open distal end 18, or more specifically the plane defined by the open distal end 18, as schematically represented by the plane or section line 18′.
  • Accordingly, when the penetrating tip 22 is in the aforementioned operative position, the base 28 of the penetrating tip 22 is substantially aligned with the open end 18 and the plane 18′ defined thereby. The closing or blocking relation between the base 28 and the open end 18 is facilitated by the base having a somewhat common transverse dimension to the open end 18, thereby effectively filling, blocking or closing the open end 18, when the penetrating tip 22 is in the preferred, operative position, as shown in FIG. 14. Further, in this preferred embodiment the base 28 of the penetrating tip 22 is disposed at a predetermined angular orientation relative 9 to the central axis 27 of the shaft 26. This angular orientation corresponds to substantially the same angular orientation of the plane of the open distal end 18, schematically demonstrated by the plane or section line 18′. Therefore, the aforementioned operative position of the penetrating tip 22 may be further defined by the penetrating tip 22, and more specifically, the base 28 being oriented at the same angle of inclination as the open end 18.
  • As set forth above, the obturator 20 and in particular, the elongated shaft 26 is selectively positioned within the interior passage or lumen of the trocar sleeve 16. The shaft 26 can be rotated within, as well as longitudinally positioned within the interior of the sleeve 16. In order to properly position the shaft 26 relative to the sleeve 16 such that the operative position of the penetrating tip 22 is accomplished, the shaft 26 includes the aforementioned gripping portion 25 secured or otherwise connected to the proximal end 25′ thereof. To facilitate a precise positioning of the shaft 26, in a manner which is convenient to a surgeon, the present invention includes an indexing assembly, generally indicated as 90, which is preferably mounted at least partially on the gripping portion 25 and partially on the mounting hub 24. As set forth above, the mounting hub 24 may be connected to the trocar housing and/or may at least partially defines the proximal end of the trocar sleeve 16. More specifically, the indexing assembly 90 includes a first indexing member 91 and a second indexing member 92 respectively formed on the gripping portion 25 and the mounting hub 24. When the trocar assembly 10 is in use, the physician or other medical personnel places the elongated shaft 26 on the interior of the trocar sleeve 16 while exerting a pushing and/or rotating force on the gripping portion 25. Proper angular alignment between the penetrating tip 22 and the sleeve 16, and more specifically, between the base 28 and the plane 18′ of the open distal end 18 is accomplished when the first and second indexing members 91 and 92 are brought into aligned registry with one another.
  • Further structural features of this preferred embodiment includes the provision of a stop structure. As set forth above, the longitudinal dimension of the shaft 26 is such as to dispose the penetrating tip 22 in the aforementioned operative position as demonstrated in FIG. 14. The operative position is at least partially obtained when the shaft 26 is fully extended through the mounting hub 24, trocar housing 12 and remainder of the sleeve 16. To facilitate proper positioning of the shaft 26 in this manner, a stop member as at 93 is mounted on the positioning member 25. The stop member 93 is disposed to abut and come into “stopping” engagement with a portion of the mounting hub 24, such as about the periphery thereof as at 24′.
  • Accordingly, when indexing members 91 and 92 are aligned in the manner set forth above and when the stop member 93 engages the predetermined, interruptive portion of the proximal end of the sleeve 16, such as the periphery 24′ of the mounting hub 24, the medical personnel are sure that the instrument is operatively assembled and that the penetrating tip 22 is in the aforementioned operative position.
  • A connecting or locking assembly may also be included and may comprise one or more connecting or locking tabs 94, which may be biased due to the structure or the material from which the tabs 94 are formed. The connecting tabs 94 are disposed and dimensioned to be removably received within connecting compartments or recesses 95 correspondingly disposed within the hub 24 or other portion of the proximal end of the trocar sleeve 16, dependent on the type of the trocar assembly 10, 10′ etc. being utilized.
  • Since many modifications, variations and changes in detail can be made to the described preferred embodiment of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.
  • Now that the invention has been described,

Claims (41)

1. A laparoscopic instrument comprising:
a) a trocar assembly including an elongated sleeve having an open distal end,
b) an elongated shaft movably disposed within said sleeve and including a penetrating tip secured to one end thereof,
c) said penetrating tip including an apex and a base and an exterior surface extending there between, and
d) said exterior surface having a cross section comprising a substantially elliptical configuration extending along at least a majority of said penetrating tip between said base and said apex.
2. (canceled)
3. A laparoscopic instrument as recited in claim 1 wherein said cross section is oriented transverse to a length of said penetrating tip.
4. A laparoscopic instrument as recited in claim 1 wherein said cross section is oriented perpendicular to a central longitudinal axis of said shaft.
5. A laparoscopic instrument as recited in claim 1 wherein said cross section is oriented transverse to a length of said penetrating tip.
6. A laparoscopic instrument as recited in claim 1 wherein said cross section is oriented perpendicular to a central longitudinal axis of said shaft.
7. A laparoscopic instrument as recited in claim 1 wherein said base is disposed at an angular orientation relative to a central longitudinal axis of said shaft.
8. A laparoscopic instrument as recited in claim 7 wherein said apex is linearly coincident with the central longitudinal axis of said shaft.
9. A laparoscopic instrument as recited in claim 7 wherein said angular orientation is substantially 45 degrees.
10. A laparoscopic instrument as recited in claim 7 wherein said base comprises a substantially elliptical configuration.
11. A laparoscopic instrument as recited in claim 7 wherein said exterior surface of said penetrating tip comprises at least two surface segments extending longitudinally between said apex and said base, said two surface segments having different lengths.
12. laparoscopic instrument as recited in claim 11 wherein said apex is linearly coincident with the central longitudinal axis of said shaft.
13. A laparoscopic instrument as recited in claim 11 wherein each of said surface segments comprises a substantially concave configuration extending along at least a portion of a length thereof.
14. A laparoscopic instrument as recited in claim 11 wherein said base comprises a substantially elliptical configuration.
15. A laparoscopic instrument as recited in claim 1 wherein said base comprises a substantially circular cross sectional configuration.
16. A laparoscopic instrument as recited in claim 1 wherein said substantially elliptical configuration comprises a plane curve.
17. A laparoscopic instrument as recited in claim 16 wherein said plane curve includes at least one substantially linear segment connected thereto.
18. A laparoscopic instrument as recited in claim 16 wherein said plane curve includes a plurality of substantially linear segments connected thereto.
19. A laparoscopic instrument as recited in claim 1 wherein said elliptical configuration comprises at least one curvilinear segment and at least one substantially linear segment connected to said curvilinear segment.
20. A laparoscopic instrument as recited in claim 19 wherein said substantially elliptical configuration comprises a plurality of linear segments interconnected to said curvilinear segment and to one another.
21. A laparoscopic instrument as recited in claim 19 wherein said substantially elliptical configuration comprises a plurality of linear segments and a plurality of curvilinear segments interconnected to one another.
22. A laparoscopic instrument as recited in claim 21 wherein said plurality of linear segments and said plurality of curvilinear segments are collectively interconnected to define a continuous configuration.
23. A laparoscopic instrument as recited in claim 19 wherein said elliptical configuration comprises a plurality of curvilinear segments.
24. A laparoscopic instrument as recited in claim 1 wherein said substantially elliptical configuration comprises a plurality of linear segments interconnected together and collectively defining a continuous configuration.
25. An instrument structured for use in laparoscopic surgery, said instrument comprising:
a) a trocar assembly including an elongated sleeve having an open distal end and an elongated shaft disposable within said sleeve,
b) a penetrating tip secured to a distal end of said shaft and disposable in a predetermined operative position relative to said sleeve,
c) said penetrating tip comprising a base and a apex and an exterior surface extending there between,
d) said operative position comprising a portion of said penetrating tip disposed in substantially closing relation to said open distal end, and
e) said exterior surface having a cross section comprising a substantially elliptical configuration extending along at least a majority of said penetrating tip between said base and said apex.
26. (canceled)
27. An instrument as recited in claim 25 wherein said cross section is oriented substantially perpendicular to a central longitudinal axis of said shaft.
28. An instrument as recited in claim 25 wherein said operative position further comprises said base disposed in substantially aligned relation with said open distal end.
29. An instrument as recited in claim 28 wherein said base and said open distal end are correspondingly dimensioned, said base disposable in said closing relation to said open distal end.
30. An instrument as recited in claim 29 wherein said closing relation is defined by said base being disposed to prevent passage of tissue through said open distal end into said sleeve.
31. An instrument as recited in claim 28 wherein said operative position further comprises said base and said open distal end having a common angular orientation relative to a central longitudinal axis of said shaft.
32. An instrument as recited in claim 25 wherein said apex is linearly coincident with a central longitudinal axis of said shaft.
33. (canceled)
34. (canceled)
35. (canceled)
36. (canceled)
37. (canceled)
38. (canceled)
39. (canceled)
40. A laparoscopic instrument comprising:
a) a trocar assembly including an elongated sleeve having an open distal end,
b) an elongated shaft movably disposed within said sleeve and including a penetrating tip secured to one end thereof,
c) said penetrating tip including an apex and a base and an exterior surface extending there between,
d) said base comprising a substantially circular cross-sectional configuration, and
e) said exterior surface having a cross section comprising a substantially elliptical configuration along at least a portion of said penetrating tip between said base and said apex.
41. A laparoscopic instrument comprising:
a) a trocar assembly including an elongated sleeve having an open distal end,
b) an elongated shaft movably disposed within said sleeve and including a penetrating tip secured to one end thereof,
c) said penetrating tip including an apex and a base and an exterior surface extending there between,
d) said base disposed at an angular orientation relative to a central longitudinal axis of said shaft,
e) said exterior surface of said penetrating tip comprising at least two surface segments extending longitudinally between said apex and said base, said two surface segments having different lengths,
f) each of said surface segments comprising a substantially concave configuration extending along at least a portion of a length thereof, and
g) said exterior surface having a cross section comprising a substantially elliptical configuration along at least a portion of said penetrating tip between said base and said apex.
US10/120,895 2000-05-16 2002-04-11 Penetrating tip for trocar assembly Active 2022-06-03 US6884253B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US20439600P true 2000-05-16 2000-05-16
US09/859,009 US6478806B2 (en) 2000-05-16 2001-05-16 Penetrating tip for trocar assembly
US10/120,895 US6884253B1 (en) 2000-05-16 2002-04-11 Penetrating tip for trocar assembly

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US10/120,895 US6884253B1 (en) 2000-05-16 2002-04-11 Penetrating tip for trocar assembly
US11/115,094 US8398666B2 (en) 2000-05-16 2005-04-26 Penetrating tip for trocar assembly
US13/846,398 US20130218188A1 (en) 2000-05-16 2013-03-18 Penetrating tip for trocar assembly

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09/859,009 Continuation-In-Part US6478806B2 (en) 2000-05-16 2001-05-16 Penetrating tip for trocar assembly

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/115,094 Continuation-In-Part US8398666B2 (en) 2000-05-16 2005-04-26 Penetrating tip for trocar assembly

Publications (2)

Publication Number Publication Date
US6884253B1 US6884253B1 (en) 2005-04-26
US20050107815A1 true US20050107815A1 (en) 2005-05-19

Family

ID=26899438

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/120,895 Active 2022-06-03 US6884253B1 (en) 2000-05-16 2002-04-11 Penetrating tip for trocar assembly

Country Status (1)

Country Link
US (1) US6884253B1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080086160A1 (en) * 2006-10-06 2008-04-10 Surgiquest, Incorporated Visualization trocar
US20110125084A1 (en) * 2003-04-08 2011-05-26 Surgiquest, Inc. Trocar assembly with pneumatic sealing
USD663838S1 (en) 2007-10-05 2012-07-17 Surgiquest, Inc. Visualization trocar
USD667954S1 (en) 2007-10-05 2012-09-25 Surgiquest, Inc. Visualization trocar
US20130012978A1 (en) * 2006-07-19 2013-01-10 Richard Spaide System of instruments for vitrectomy surgery comprising sharp trochar, cannula and canula valve cap and method for its use
US8795223B2 (en) 2011-03-08 2014-08-05 Surgiquest, Inc. Trocar assembly with pneumatic sealing
US20140358070A1 (en) 2007-04-13 2014-12-04 Surgiquest, Inc. System and method for improved gas recirculation in surgical trocars with pneumatic sealing

Families Citing this family (83)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL143214D0 (en) * 1998-12-01 2002-04-21 Atropos Ltd Laparoscopic sealed access device
US7559893B2 (en) 1998-12-01 2009-07-14 Atropos Limited Wound retractor device
US20070004968A1 (en) * 1998-12-01 2007-01-04 Frank Bonadio Seal for a cannula
US7537564B2 (en) 1998-12-01 2009-05-26 Atropos Limited Wound retractor device
AT415867T (en) 1999-10-14 2008-12-15 Atropos Ltd surgical wundretraktor
US6770059B1 (en) * 1999-10-28 2004-08-03 Span-America Medical Systems, Inc. Curved tip for an insertion device
US8398666B2 (en) * 2000-05-16 2013-03-19 Teleflex Medical Incorporated Penetrating tip for trocar assembly
CA2422782C (en) 2000-10-19 2012-02-07 Applied Medical Resources Corporation Surgical access apparatus and method
EP2422829B1 (en) 2001-08-14 2013-03-06 Applied Medical Resources Corporation Surgical access sealing apparatus
CA2533204A1 (en) 2003-08-06 2005-02-17 Applied Medical Resources Corporation Surgical device with tack-free gel and method of manufacture
EP2769683B1 (en) 2001-09-24 2017-07-12 Applied Medical Resources Corporation Bladeless obturator
EP2545871B1 (en) 2004-06-29 2015-02-11 Applied Medical Resources Corporation Insufflating optical surgical instrument
US6958037B2 (en) 2001-10-20 2005-10-25 Applied Medical Resources Corporation Wound retraction apparatus and method
CA2485481A1 (en) 2002-05-16 2003-11-27 Applied Medical Resources Corporation Cone tip obturator
EP2363105B1 (en) 2002-06-05 2014-01-08 Applied Medical Resources Corporation Wound retractor
US9271753B2 (en) 2002-08-08 2016-03-01 Atropos Limited Surgical device
AT364355T (en) 2002-09-19 2007-07-15 Atropos Ltd surgical wundretraktor
EP1572014B1 (en) * 2002-12-16 2007-07-25 Atropos Limited A surgical device
US7393339B2 (en) 2003-02-21 2008-07-01 C. R. Bard, Inc. Multi-lumen catheter with separate distal tips
US20050020884A1 (en) 2003-02-25 2005-01-27 Hart Charles C. Surgical access system
US20040230217A1 (en) * 2003-05-15 2004-11-18 O'heeron Peter T. Offset trocar piercing tip
US20040243095A1 (en) 2003-05-27 2004-12-02 Shekhar Nimkar Methods and apparatus for inserting multi-lumen spit-tip catheters into a blood vessel
MXPA06001219A (en) * 2003-07-30 2006-08-31 Atropos Ltd A device.
US7163510B2 (en) 2003-09-17 2007-01-16 Applied Medical Resources Corporation Surgical instrument access device
EP1670349B9 (en) 2003-10-03 2014-01-15 Applied Medical Resources Corporation Bladeless optical obturator
US20050148823A1 (en) * 2003-10-15 2005-07-07 Trevor Vaugh Surgical sealing device
US8992454B2 (en) 2004-06-09 2015-03-31 Bard Access Systems, Inc. Splitable tip catheter with bioresorbable adhesive
CA2583285A1 (en) 2004-10-11 2006-04-20 Atropos Limited An instrument access device
US9186175B2 (en) 2004-10-28 2015-11-17 Nico Corporation Surgical access assembly and method of using same
US9770261B2 (en) * 2004-10-28 2017-09-26 Nico Corporation Surgical access assembly and method of using same
US9265523B2 (en) 2011-10-24 2016-02-23 Nico Corporation Surgical access system with navigation element and method of using same
US8070767B2 (en) * 2005-01-28 2011-12-06 Tyco Healthcare Group Lp Optical penetrating adapter for surgical portal
JP5239029B2 (en) 2005-02-04 2013-07-17 アトロポス・リミテッド Apparatus for inserting at least partially through the wound opening surgical instruments
EP1903958A1 (en) 2005-07-15 2008-04-02 Atropos Limited A wound retractor
EP1934032B1 (en) 2005-10-14 2009-12-02 Applied Medical Resources Corporation Method of making a hand access laparoscopic device
EP2984993A1 (en) 2006-10-06 2016-02-17 Applied Medical Resources Corporation Visual insufflation port
EP2146644A4 (en) 2007-05-11 2012-07-18 Applied Med Resources Surgical retractor
EP2146643A4 (en) 2007-05-11 2012-05-30 Applied Med Resources Surgical retractor with gel pad
AU2008202266B2 (en) * 2007-06-01 2013-09-12 Covidien Lp Obturator tips
US8187178B2 (en) 2007-06-05 2012-05-29 Atropos Limited Instrument access device
US20110071359A1 (en) 2007-06-05 2011-03-24 Frank Bonadio Instrument Access Device
US8657740B2 (en) 2007-06-05 2014-02-25 Atropos Limited Instrument access device
KR101511497B1 (en) 2007-10-05 2015-04-13 코비디엔 엘피 Seal anchor for use in surgical procedures
USD738500S1 (en) 2008-10-02 2015-09-08 Covidien Lp Seal anchor for use in surgical procedures
US8292841B2 (en) 2007-10-26 2012-10-23 C. R. Bard, Inc. Solid-body catheter including lateral distal openings
US8066660B2 (en) 2007-10-26 2011-11-29 C. R. Bard, Inc. Split-tip catheter including lateral distal openings
US9579485B2 (en) 2007-11-01 2017-02-28 C. R. Bard, Inc. Catheter assembly including a multi-lumen configuration
CN101918067B (en) 2007-11-01 2013-04-10 C·R·巴德股份有限公司 Catheter assembly including triple lumen tips
AU2009206407B2 (en) 2008-01-22 2014-04-24 Applied Medical Resources Corporation Surgical instrument access device
EP2851020B1 (en) 2008-01-25 2016-01-20 Applied Medical Resources Corporation Insufflating access system
USD700326S1 (en) * 2008-04-28 2014-02-25 Ethicon Endo-Surgery, Inc. Trocar housing
US8911463B2 (en) * 2008-06-10 2014-12-16 Covidien Lp Bladed/bladeless obturator for use in a surgical trocar assembly
AU2009296212B2 (en) 2008-09-29 2015-02-05 Applied Medical Resources Corporation First-entry trocar system
US8262568B2 (en) 2008-10-13 2012-09-11 Applied Medical Resources Corporation Single port access system
US8375955B2 (en) 2009-02-06 2013-02-19 Atropos Limited Surgical procedure
US8574153B2 (en) * 2009-03-20 2013-11-05 Covidien Lp Flexible port seal
US8979883B2 (en) 2009-12-17 2015-03-17 Covidien Lp Obturator tip
US9226774B2 (en) 2009-12-17 2016-01-05 Covidien Lp Visual obturator with tip openings
US8608697B2 (en) * 2010-03-04 2013-12-17 The Board Of Trustees Of The Leland Stanford Junior University Insertion indicator for needle
US8961552B2 (en) * 2010-09-21 2015-02-24 Covidien Lp Bladeless obturators and bladeless obturator members
US9289115B2 (en) 2010-10-01 2016-03-22 Applied Medical Resources Corporation Natural orifice surgery system
WO2012044959A1 (en) 2010-10-01 2012-04-05 Applied Medical Resources Corporation Natural orifice surgery system
US8753267B2 (en) 2011-01-24 2014-06-17 Covidien Lp Access assembly insertion device
EP2704650A2 (en) 2011-05-02 2014-03-12 Applied Medical Resources Corporation Low-profile surgical universal access port
AU2012253555B2 (en) 2011-05-10 2016-08-04 Applied Medical Resources Corporation Wound retractor
US9693802B2 (en) 2012-06-06 2017-07-04 Covidien Lp Obturator tip with insufflation pathway
IL221634D0 (en) 2012-08-26 2012-12-31 Medimop Medical Projects Ltd Universal drug vial adapter
JP2015535712A (en) 2012-09-28 2015-12-17 コヴィディエン リミテッド パートナーシップ The optical trocar visualization systems and devices
USD748252S1 (en) * 2013-02-08 2016-01-26 C. R. Bard, Inc. Multi-lumen catheter tip
IL225734D0 (en) 2013-04-14 2013-09-30 Medimop Medical Projects Ltd Ready-to-use drug vial assemblages including drug vial and drug vial closure having fluid transfer member, and drug vial closure therefor
JP6199483B2 (en) 2013-05-10 2017-09-20 メディモップ・メディカル・プロジェクツ・リミテッド Medical device comprising a vial adapter having an in-line drying agent module
USD737442S1 (en) * 2013-12-12 2015-08-25 Kai R&D Center Co., Ltd. Trocar
USD794183S1 (en) * 2014-03-19 2017-08-08 Medimop Medical Projects Ltd. Dual ended liquid transfer spike
US10064649B2 (en) 2014-07-07 2018-09-04 Covidien Lp Pleated seal for surgical hand or instrument access
WO2016011091A1 (en) 2014-07-14 2016-01-21 C. R. Bard, Inc. Apparatuses, systems, and methods for inserting split tip catheters having enhanced stiffening and guiding features
AU2015289553A1 (en) 2014-07-18 2016-11-10 Applied Medical Resources Corporation Gels having permanent tack free coatings and method of manufacture
CA2957951A1 (en) 2014-08-15 2016-02-18 Applied Medical Resources Corporation Natural orifice surgery system
US9707011B2 (en) 2014-11-12 2017-07-18 Covidien Lp Attachments for use with a surgical access device
WO2016085930A2 (en) 2014-11-25 2016-06-02 Applied Medical Resources Corporation Circumferential wound retraction with support and guidance structures
EP3217944B1 (en) 2015-01-05 2019-04-10 West Pharma. Services IL, Ltd Dual vial adapter assemblages with quick release drug vial adapter for ensuring correct usage
USD801522S1 (en) 2015-11-09 2017-10-31 Medimop Medical Projects Ltd. Fluid transfer assembly
JP6523569B2 (en) 2015-11-25 2019-06-05 ウエスト・ファーマ.サービシーズ・イスラエル,リミテッド Dual vial adapter assembly comprising a vial adapter having a self sealing access valve
USD832430S1 (en) 2016-11-15 2018-10-30 West Pharma. Services IL, Ltd. Dual vial adapter assemblage

Citations (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725577A (en) * 1967-05-29 1973-04-03 Rca Corp Common base amplifier terminating circuit for high impedance detecting apparatus
US4535773A (en) * 1982-03-26 1985-08-20 Inbae Yoon Safety puncturing instrument and method
US4561445A (en) * 1983-05-25 1985-12-31 Joseph J. Berke Elongated needle electrode and method of making same
US4654030A (en) * 1986-02-24 1987-03-31 Endotherapeutics Trocar
US4808157A (en) * 1987-07-13 1989-02-28 Neuro Delivery Technology, Inc. Multi-lumen epidural-spinal needle
US4869717A (en) * 1988-04-25 1989-09-26 Adair Edwin Lloyd Gas insufflation needle with instrument port
US5009643A (en) * 1989-08-09 1991-04-23 Richard Wolf Medical Instruments Corp. Self-retaining electrically insulative trocar sleeve and trocar
US5114407A (en) * 1990-08-30 1992-05-19 Ethicon, Inc. Safety mechanism for trocar
US5139485A (en) * 1991-05-03 1992-08-18 Ethicon, Inc. Verress needle with enhanced acoustical means
US5183464A (en) * 1991-05-17 1993-02-02 Interventional Thermodynamics, Inc. Radially expandable dilator
US5224952A (en) * 1988-07-06 1993-07-06 Ethicon, Inc. Safety trocar
US5224951A (en) * 1991-02-19 1993-07-06 Dexide, Inc. Surgical trocar and spike assembly
US5254106A (en) * 1992-04-17 1993-10-19 Feaster Fred T Hydrodissection needle
US5256149A (en) * 1992-02-14 1993-10-26 Ethicon, Inc. Trocar having transparent cannula and method of using
US5256147A (en) * 1992-06-17 1993-10-26 Minnesota Mining And Manufacturing Company Reusable trocar with easily replaceable obturator
US5263937A (en) * 1993-02-11 1993-11-23 Shipp John I Trocar with profile to reduce insertion force
US5312360A (en) * 1990-11-20 1994-05-17 Innerdyne Medical, Inc. Tension guide and dilator
US5314417A (en) * 1992-12-22 1994-05-24 Ethicon, Inc. Safety trocar
US5318580A (en) * 1990-09-11 1994-06-07 Origin Medsystems, Inc. Retractable trocar
US5352206A (en) * 1993-03-31 1994-10-04 Laparomed Corporation Trocar system having penetration indicator
US5372588A (en) * 1992-11-24 1994-12-13 Farley; Kevin Trocar having blunt tip
US5376076A (en) * 1992-11-17 1994-12-27 Kaali; Steven G. Visually directed trocar for laparoscopic surgical procedures and method of using same
US5387197A (en) * 1993-02-25 1995-02-07 Ethicon, Inc. Trocar safety shield locking mechanism
US5391156A (en) * 1992-06-30 1995-02-21 Ethicon, Inc. Flexible encoscopic surgical port
US5405328A (en) * 1992-06-17 1995-04-11 Minnesota Mining And Manufacturing Company Trocar with replaceable obturator
US5478328A (en) * 1992-05-22 1995-12-26 Silverman; David G. Methods of minimizing disease transmission by used hypodermic needles, and hypodermic needles adapted for carrying out the method
US5601559A (en) * 1988-10-24 1997-02-11 Cook Incorporated Intraosseous needle
US5624459A (en) * 1995-01-26 1997-04-29 Symbiosis Corporation Trocar having an improved cutting tip configuration
US5634937A (en) * 1995-05-19 1997-06-03 General Surgical Innovations, Inc. Skin seal with inflatable membrane
US5674237A (en) * 1996-03-06 1997-10-07 Ott; Henryk Safety trocar
US5676681A (en) * 1992-01-06 1997-10-14 Yoon; Inbae Safety trocar penetrating instrument with safety shield having resilient legs
US5690663A (en) * 1994-08-25 1997-11-25 Ethicon Endo-Surgery Inc. Safety trocar
US5730754A (en) * 1995-01-10 1998-03-24 Obenchain; Theodore G. Nerve deflecting conduit needle and method
US5792142A (en) * 1996-02-16 1998-08-11 Howmedica, Inc. Cutting tip
US5800451A (en) * 1994-01-18 1998-09-01 Willy Rusch Ag Trocar system
US5807338A (en) * 1995-10-20 1998-09-15 United States Surgical Corporation Modular trocar system and methods of assembly
US5807317A (en) * 1997-02-27 1998-09-15 Microtek Medical, Inc. Trocar with concave cutting surface
US5843039A (en) * 1994-09-14 1998-12-01 Karl Storz Gmbh & Co. Surgical treatment
US5984941A (en) * 1997-02-13 1999-11-16 Endoscopic Concepts, Inc. Trocar
US5984919A (en) * 1991-02-13 1999-11-16 Applied Medical Resources Corporation Surgical trocar
US6063099A (en) * 1994-05-06 2000-05-16 Endoscopic Concepts, Inc. Dilating trocar shield with blade tip
USD426635S (en) * 1998-08-18 2000-06-13 Genicon, Lc Combination trocar, cannula, and valve
US6099544A (en) * 1993-09-07 2000-08-08 Neosurg Technologies, Inc. Safety shielded, reusable trocar
US6106539A (en) * 1998-04-15 2000-08-22 Neosurg Technologies Trocar with removable, replaceable tip
US6168607B1 (en) * 1997-07-18 2001-01-02 Arnaud Wattiez Device having a funnel for guiding surgical tools into a body cavity
US6203557B1 (en) * 1995-07-13 2001-03-20 Origin Medsystems Tissue separation cannula and method
USD443360S1 (en) * 2000-03-22 2001-06-05 Dexterity Surgical Inc. Distal end of obturator for a trocar
USD449887S1 (en) * 2000-01-26 2001-10-30 Genicon Lc Combined obturator, cannula and valve assembly

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES152231Y (en) 1969-10-02 1970-07-01 Ballestero Sierra A trocar perfected.

Patent Citations (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3725577A (en) * 1967-05-29 1973-04-03 Rca Corp Common base amplifier terminating circuit for high impedance detecting apparatus
US4535773A (en) * 1982-03-26 1985-08-20 Inbae Yoon Safety puncturing instrument and method
US4561445A (en) * 1983-05-25 1985-12-31 Joseph J. Berke Elongated needle electrode and method of making same
US4654030A (en) * 1986-02-24 1987-03-31 Endotherapeutics Trocar
US4808157A (en) * 1987-07-13 1989-02-28 Neuro Delivery Technology, Inc. Multi-lumen epidural-spinal needle
US4869717A (en) * 1988-04-25 1989-09-26 Adair Edwin Lloyd Gas insufflation needle with instrument port
US5224952A (en) * 1988-07-06 1993-07-06 Ethicon, Inc. Safety trocar
US5601559A (en) * 1988-10-24 1997-02-11 Cook Incorporated Intraosseous needle
US5009643A (en) * 1989-08-09 1991-04-23 Richard Wolf Medical Instruments Corp. Self-retaining electrically insulative trocar sleeve and trocar
US5114407A (en) * 1990-08-30 1992-05-19 Ethicon, Inc. Safety mechanism for trocar
US5318580A (en) * 1990-09-11 1994-06-07 Origin Medsystems, Inc. Retractable trocar
US5312360A (en) * 1990-11-20 1994-05-17 Innerdyne Medical, Inc. Tension guide and dilator
US5984919A (en) * 1991-02-13 1999-11-16 Applied Medical Resources Corporation Surgical trocar
US5224951A (en) * 1991-02-19 1993-07-06 Dexide, Inc. Surgical trocar and spike assembly
US5139485A (en) * 1991-05-03 1992-08-18 Ethicon, Inc. Verress needle with enhanced acoustical means
US5183464A (en) * 1991-05-17 1993-02-02 Interventional Thermodynamics, Inc. Radially expandable dilator
US5676681A (en) * 1992-01-06 1997-10-14 Yoon; Inbae Safety trocar penetrating instrument with safety shield having resilient legs
US5256149A (en) * 1992-02-14 1993-10-26 Ethicon, Inc. Trocar having transparent cannula and method of using
US5254106A (en) * 1992-04-17 1993-10-19 Feaster Fred T Hydrodissection needle
US5478328A (en) * 1992-05-22 1995-12-26 Silverman; David G. Methods of minimizing disease transmission by used hypodermic needles, and hypodermic needles adapted for carrying out the method
US5256147A (en) * 1992-06-17 1993-10-26 Minnesota Mining And Manufacturing Company Reusable trocar with easily replaceable obturator
US5405328A (en) * 1992-06-17 1995-04-11 Minnesota Mining And Manufacturing Company Trocar with replaceable obturator
US5391156A (en) * 1992-06-30 1995-02-21 Ethicon, Inc. Flexible encoscopic surgical port
US5376076A (en) * 1992-11-17 1994-12-27 Kaali; Steven G. Visually directed trocar for laparoscopic surgical procedures and method of using same
US5372588A (en) * 1992-11-24 1994-12-13 Farley; Kevin Trocar having blunt tip
US5314417A (en) * 1992-12-22 1994-05-24 Ethicon, Inc. Safety trocar
US5263937A (en) * 1993-02-11 1993-11-23 Shipp John I Trocar with profile to reduce insertion force
US5387197A (en) * 1993-02-25 1995-02-07 Ethicon, Inc. Trocar safety shield locking mechanism
US5352206A (en) * 1993-03-31 1994-10-04 Laparomed Corporation Trocar system having penetration indicator
US6099544A (en) * 1993-09-07 2000-08-08 Neosurg Technologies, Inc. Safety shielded, reusable trocar
US5800451A (en) * 1994-01-18 1998-09-01 Willy Rusch Ag Trocar system
US6063099A (en) * 1994-05-06 2000-05-16 Endoscopic Concepts, Inc. Dilating trocar shield with blade tip
US5690663A (en) * 1994-08-25 1997-11-25 Ethicon Endo-Surgery Inc. Safety trocar
US5843039A (en) * 1994-09-14 1998-12-01 Karl Storz Gmbh & Co. Surgical treatment
US5730754A (en) * 1995-01-10 1998-03-24 Obenchain; Theodore G. Nerve deflecting conduit needle and method
US5624459A (en) * 1995-01-26 1997-04-29 Symbiosis Corporation Trocar having an improved cutting tip configuration
US5634937A (en) * 1995-05-19 1997-06-03 General Surgical Innovations, Inc. Skin seal with inflatable membrane
US6203557B1 (en) * 1995-07-13 2001-03-20 Origin Medsystems Tissue separation cannula and method
US5807338A (en) * 1995-10-20 1998-09-15 United States Surgical Corporation Modular trocar system and methods of assembly
US5792142A (en) * 1996-02-16 1998-08-11 Howmedica, Inc. Cutting tip
US5674237A (en) * 1996-03-06 1997-10-07 Ott; Henryk Safety trocar
US5984941A (en) * 1997-02-13 1999-11-16 Endoscopic Concepts, Inc. Trocar
US5807317A (en) * 1997-02-27 1998-09-15 Microtek Medical, Inc. Trocar with concave cutting surface
US6168607B1 (en) * 1997-07-18 2001-01-02 Arnaud Wattiez Device having a funnel for guiding surgical tools into a body cavity
US6106539A (en) * 1998-04-15 2000-08-22 Neosurg Technologies Trocar with removable, replaceable tip
USD426635S (en) * 1998-08-18 2000-06-13 Genicon, Lc Combination trocar, cannula, and valve
USD449887S1 (en) * 2000-01-26 2001-10-30 Genicon Lc Combined obturator, cannula and valve assembly
USD443360S1 (en) * 2000-03-22 2001-06-05 Dexterity Surgical Inc. Distal end of obturator for a trocar

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110125084A1 (en) * 2003-04-08 2011-05-26 Surgiquest, Inc. Trocar assembly with pneumatic sealing
US20130012978A1 (en) * 2006-07-19 2013-01-10 Richard Spaide System of instruments for vitrectomy surgery comprising sharp trochar, cannula and canula valve cap and method for its use
US20080086160A1 (en) * 2006-10-06 2008-04-10 Surgiquest, Incorporated Visualization trocar
US9907569B2 (en) 2006-10-06 2018-03-06 Conmed Corporation Trocar assembly with pneumatic sealing
US8317815B2 (en) * 2006-10-06 2012-11-27 Surgiquest, Inc. Visualization trocar
US10092319B2 (en) 2007-04-13 2018-10-09 Surgiquest, Inc. System and method for improved gas recirculation in surgical trocars with pneumatic sealing
US20140358070A1 (en) 2007-04-13 2014-12-04 Surgiquest, Inc. System and method for improved gas recirculation in surgical trocars with pneumatic sealing
USD663838S1 (en) 2007-10-05 2012-07-17 Surgiquest, Inc. Visualization trocar
USD667954S1 (en) 2007-10-05 2012-09-25 Surgiquest, Inc. Visualization trocar
US8795223B2 (en) 2011-03-08 2014-08-05 Surgiquest, Inc. Trocar assembly with pneumatic sealing

Also Published As

Publication number Publication date
US6884253B1 (en) 2005-04-26

Similar Documents

Publication Publication Date Title
EP0563306B1 (en) Safety penetrating instrument
AU2004277429B2 (en) Bladeless optical obturator
US5683378A (en) Endoscopic wound access and anchoring device method
US9005116B2 (en) Access device
US5569291A (en) Surgical penetration and dissection instrument
US6989003B2 (en) Obturator and cannula for a trocar adapted for ease of insertion and removal
US5545150A (en) Trocar
US8636759B2 (en) Bladeless obturator
US5269772A (en) Laparoscopic cannula assembly and associated method
US6454783B1 (en) Laparoscopic instruments and trocar systems for trans-umbilical laproscopic surgery
EP0707456B1 (en) Laparoscopic instrument for penetrating body tissue
US5401247A (en) Safety penetrating instrument
CN100415154C (en) Medical device for providing access
US5137509A (en) Surgical insufflation instrument
US10278728B2 (en) Transapical mini-introducer hemostasis valve and punch
CA2371884C (en) Self-retaining surgical access instrument
US5658306A (en) Method for making additional incisions in laparoscopic surgery
US6451031B1 (en) Blood vessel suturing device with single guide-wire/needle receiving lumen
US6537290B2 (en) Sealing access cannula system
US9113951B2 (en) Seal anchor for use in surgical procedures
JP5226065B2 (en) Elastically deformable surgical access device having a telescopic guide tube
EP2231233B1 (en) Insufflating access system
US5674237A (en) Safety trocar
US5556411A (en) Trocar assembly having a cannula retaining member
US5857999A (en) Small diameter introducer for laparoscopic instruments

Legal Events

Date Code Title Description
AS Assignment

Owner name: TAUT, INC., ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MCFARLANE, RICHARD H.;REEL/FRAME:013683/0414

Effective date: 20021105

STCF Information on status: patent grant

Free format text: PATENTED CASE

AS Assignment

Owner name: PILLING WECK INCORPORATED, PENNSYLVANIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:TAUT INC.;REEL/FRAME:018777/0859

Effective date: 20061108

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: TELEFLEX MEDICAL INCORPORATED (A CALIFORNIA CORPOR

Free format text: MERGER;ASSIGNOR:PILLING WECK INCORPORATED (A DELAWARE CORPORATION);REEL/FRAME:022331/0907

Effective date: 20070312

FPAY Fee payment

Year of fee payment: 8

FPAY Fee payment

Year of fee payment: 12

AS Assignment

Owner name: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT

Free format text: SECURITY INTEREST;ASSIGNOR:TELEFLEX MEDICAL INCORPORATED;REEL/FRAME:041761/0470

Effective date: 20170217