|Publication number||US3308819 A|
|Publication date||Mar 14, 1967|
|Filing date||Dec 9, 1963|
|Priority date||Dec 9, 1963|
|Publication number||US 3308819 A, US 3308819A, US-A-3308819, US3308819 A, US3308819A|
|Inventors||Leon J Arp|
|Original Assignee||Univ Iowa State Res Found Inc|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (4), Referenced by (65), Classifications (10)|
|External Links: USPTO, USPTO Assignment, Espacenet|
March 14, 1967 L. J. ARP
ANESTHETIC DEVICE Filed Dec. 9, 1963 i 5m i a J KN wfflw mm 2 w J m R Q ,3
Z Mow v d fl United States Patent O 3,308,819 ANESTHETIC DEVICE Leon J. Arp, Ames, Iowa, assignor to Iowa State University Research Foundation, Inc., Ames, Iowa, a corporation of Iowa Filed Dec. 9, 1963, Ser. No. 328,999 3 Claims. (Cl. 128215) This invention relates to an anesthetic device, and, more particularly, to a catheter useful in the practice of cervical anesthesia.
In the labor period preceding childbirth, the cervix area is anesthetized, the anesthetic lasting for about one hour. At the present time, the block is delivered into the cervix area with a metal needle, and after the expiration of the dosage, the insertion procedure must be repeated. Because of the additional danger of an infection and the time and circumstances involved, it is desirable to be able to leave the needle in place so that additional anesthetic may be given whenever needed. However, a standard hypodermic needle cannot be left in place, even if a method were devised to maintain the proper one-half inch insertion depth, because of the potential danger to the infant by the sharp point during the delivery process.
The characteristics of the anesthetic delivery conduit meeting the above-described requirements pose a dilemma. If the conduit is rigid enough to remain immobilized, there is potential danger to the infant. On the other hand, if the conduit is made flexible or yielding, there is the possibility of loss of the conduit, with the attendant possibility of infection through repeated insertions, and, in fact, failure to achieve the principal objective of the conduit. It is, therefore, an important object of this invention to provide a solution to the dilemma just described through the provision of a flexible plastic-type conduit similar to that used in catheters and further characterized by unique means for preventing accidental withdrawal, but which coact with the catheter to permit deliberate withdrawal with a minimum of danger and further with minimum danger to the infant.
Another object of the invention is to provide a flexible catheter for use in conjunction with a hypodermic cannula in cervical anesthesia wherein the catheter is equipped with unique integral spurs adapted to be folded into an alternative position so as to facilitate removal of the catheter at the end of the use period.
Still another object is to provide a unique procedure for the administration of cervical anesthesia employing a novel catheter-like device for delivering the anesthetic to the cervix.
Other objects and advantages of the invention may be seen in the details of construction and operation set down in this specification.
The invention is explained in conjunction with an illustrative embodiment in the accompanying drawing, in which FIG. 1 is an elevational view, partially in dotted line, of a syringe equipped with the inventive catheter-like conduit;
FIG. 2 is a perspective view, on enlarged scale, of the conduit of FIG. 1;
FIG. 3 is a sectional view taken along the line 3-3 of FIG. 2;
FIG. 4 is a fragmentary sectional view taken along the sight line 4-4 applied to FIG. 3; and
FIG. 5 is an elevational view of the insertive parts of FIG. 1 but in exploded form.
In the illustration given and with particular reference to FIG. 1, the numeral designates generally a hypodermic syringe equipped with the usual barrel 11 terminating in a pointed cannula 12 and also equipped with Patented Mar. 14, 1967 a plunger 13 and finger-supporting portions 14. Arranged in ensleeved relation over the cannula 12 is the catheter-like conduit generally designated 15 and which can be seen in larger scale in FIG. 2 and exploded view in FIG. 5. The distal end of the conduit 15 is tapered as at 16 (see also FIG. 4). The conduit 15 is itself ensleeved by a penetration-limiting cannula 17, each of the cannulae being equipped with adapters as at 12a and 17a, respectively Additionally, the cannula 17 has a penetration-limiting hub 17b.
Intermediate the conduit ends are provided a plurality of spurs as at 18 and 19, which outstand from the outer wall 20 of the conduit 15. The conduit 15 is also equipped with an inner wall or bore 21, and the conduit 15 may be advantageously constructed of 0.027" ID. (#22) polyvinyl chloride or Teflon tubing.
The spurs 18 and 19 are seen to be spaced from, but adjacent to, the distal end 16, and are circumferentially spaced about the outer wall 20. Because of the thinness of the tube wall constituting the conduit 15, the spurs may be provided by slashes as at 18a and 19a, which may or may not extend completely through the tube wall (compare 18a and 19a in FIG. 4). Optimally, the slashes 18a and 19a defining the spurs 18 and 19 occupy a portion of the tube periphery more than and less than so as to substantially not interfere with the integrity of the conduit 15. The bottom of the slash is smooth or rounded as at 18b in FIG. 4. The round bottom can be obtained by making the cut with a hot wire, thereby making the cut by melting or vaporizing the plastic.
In the operation of the invention, the usual charge of anesthetic is placed within the barrel 11 of the hypodermic syringe 10 and the cannulae 12 and 17 directed toward the spot of administration, the catheter-like conduit 15 being positioned as seen in FIG. 1. After the anesthetic charge is delivered, the syringe 10 equipped with the cannulae 12 and 17 is removed both from the cervical region and the conduit 15, leaving the latter in place in the tissue to the proper depth. This depth is of the order of /2", and is maintained through the provision of the integral spur means provided adjacent the distal end of the conduit 15, the remaining 5 /2 or so of the conduit 15 being smooth. Any inadvertent movement against the conduit 15 will not result in its displacement, inasmuch as the spurs 18 and 19 serve as anchors. Ultimately, the conduit 15 is removed, after subsequent administrations of anesthetic if the same are called for, merely by pulling axially on the conduit 15, whereupon the spurs 18 and 19 fold over to the configuration indicated in dotted line and designated by the numeral 18c in FIG. 4. At this time, the infant has been delivered and the cervix is still anesthetized, so that there is no pain attendant on the removal of the conduit 15. Further, the folding over of the spurs 18 and 19 results in only a slight enlargement of the channel developed during insertion of the hypodermic cannnula 12.
On the other hand, during insertion, the spurs 18 and 19 fold into positions of conformity with the outer wall 20 so as to preclude any undesirable enlargement of the channel prior to the time the anesthetic is administered.
The use of the heated wire for providing the spurs 18 and 19 relieves the stresses which would otherwise be present at the apex of each slash, tending to disrupt or tear the spur. It will be appreciated that the hot wire technique can be utilized by molding to develop the same type of strainless configuration. This also permits the development of alternative configurations such as molded concentric rings.
While in the foregoing specification a detailed description of an embodiment of the invention has been set down for the purpose of explanation, many variations in the details herein given may be made by those skilled in the art without departing from the spirit and scope of the invention.
1. In combination, a hypodermic syringe equipped with a pointed cannula for the delivery of anesthetic, a unitary flexible plastic tube ensleeved about said cannula, said tube having integral spur means positioned adjacent the end of said cannula efiective to anchor said tube in position in cervical tissue when the cannula is removed from the tube.
2. The combination of claim 1 in which said cannula extends beyond the end of said tube.
3. In combination, a hypodermic syringe equipped with a first cannula having a pointed end for the delivery of anesthetic, a unitary flexible plastic tube ensleeved about said first cannula and terminating before said pointed end, and a second cannula ensleeved on said tube andterminating in a penetration-limiting hub before the end of said tube, the portion of said tube extending beyond said second cannula having integral spur means effective to anchor said tube in position in cervical tissue when said first and second cannulae are withdrawn from said tube.
References Cited by the Examiner UNITED STATES PATENTS 2,740,404 4/1956 Kohl 128-215 2,828,744 4/1958 Hirsh etal 12s 221 3,123,077 3/1964 Alcamo 12s 332.5
FOREIGN PATENTS 586,018 12/1924 France.
ROBERT E. MORGAN, Acting Primary Examiner.
D. L. TRULUCK, RICHARD A. GAUDET, Examiners.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2740404 *||Feb 21, 1955||Apr 3, 1956||Kohl Gerald C||Injection needle guide|
|US2828744 *||Feb 13, 1956||Apr 1, 1958||Mansbach Alvin A||Flexible needle for use in intravenous therapy|
|US3123077 *||Aug 13, 1956||Mar 3, 1964||Surgical suture|
|FR586018A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3487826 *||Sep 6, 1966||Jan 6, 1970||Barefoot Charles A||Electromagnetic catheter blood flow probe|
|US3506007 *||Jul 24, 1967||Apr 14, 1970||Henkin Melvyn Lane||Catheter-needle|
|US3508545 *||Nov 16, 1967||Apr 28, 1970||Dow Corning||Catheter placement unit for paracervical anesthesia|
|US3521640 *||Dec 7, 1967||Jul 28, 1970||Fracchia Alfred A||Surgical apparatus for use with a diseased lung or the like and related method|
|US3598119 *||Feb 2, 1970||Aug 10, 1971||Charles A White||Continuous paracervical anesthesia method and device|
|US3635223 *||Dec 2, 1969||Jan 18, 1972||Us Catheter & Instr Corp||Embolectomy catheter|
|US3665916 *||Aug 28, 1969||May 30, 1972||Tokyo Shibaura Electric Co||Catheter type semiconductor radiation detector|
|US3675639 *||May 11, 1970||Jul 11, 1972||Hugo S Cimber||Device for and method of temporary sterilizing a female|
|US3896804 *||Nov 13, 1973||Jul 29, 1975||Astra Sjuco Ab||Catheter for submucous administration of local anesthetics in obtaining paracervical block|
|US3938529 *||Jul 22, 1974||Feb 17, 1976||Gibbons Robert P||Indwelling ureteral catheter|
|US3951132 *||Apr 15, 1974||Apr 20, 1976||Investors In Ventures, Inc.||Implant and implanting method|
|US4432757 *||Apr 9, 1982||Feb 21, 1984||Davis Jr Richard C||Indwelling urethral catheter|
|US4545374 *||Sep 3, 1982||Oct 8, 1985||Jacobson Robert E||Method and instruments for performing a percutaneous lumbar diskectomy|
|US4592356 *||Sep 28, 1984||Jun 3, 1986||Pedro Gutierrez||Localizing device|
|US4799495 *||Mar 20, 1987||Jan 24, 1989||National Standard Company||Localization needle assembly|
|US4995863 *||Feb 25, 1988||Feb 26, 1991||Catheter Technology Corporation||Catheter with slit valve|
|US5011478 *||Jan 31, 1989||Apr 30, 1991||Cook Incorporation||Recessed dilator-sheath assembly and method|
|US5160325 *||Jan 22, 1991||Nov 3, 1992||C. R. Bard, Inc.||Catheter with novel lumens shapes|
|US5292311 *||Jul 31, 1992||Mar 8, 1994||Cook Incorporated||Recessed dilator-sheath assembly and method|
|US5443484 *||Mar 14, 1994||Aug 22, 1995||Loma Linda University Medical Center||Trocar and method for endoscopic surgery|
|US5577993 *||Jan 13, 1995||Nov 26, 1996||Loma Linda University Medical Center||Trocar facilitator for endoscopic surgery and method of using the same|
|US5807349 *||Mar 10, 1997||Sep 15, 1998||United States Surgical Corporation||Catheter having valve mechanism|
|US6120480 *||Oct 28, 1997||Sep 19, 2000||Medtronic Ave, Inc.||Catheter introducer|
|US6344038 *||Aug 1, 2000||Feb 5, 2002||Paul J. Weber||Surgical anti-friction device|
|US7695492 *||Jun 12, 2003||Apr 13, 2010||Boston Scientific Scimed, Inc.||Enhanced bleed back system|
|US7931658||Mar 18, 2005||Apr 26, 2011||Interrad Medical, Inc.||Temporary retention device|
|US7935127||Nov 22, 2006||May 3, 2011||Interrad Medical, Inc.||Temporary retention device|
|US8016794 *||Mar 9, 2006||Sep 13, 2011||Interrad Medical, Inc.||Anchor device and method|
|US8016813||Sep 3, 2009||Sep 13, 2011||Interrad Medical, Inc.||Anchor device and method|
|US8038653||Jul 16, 2008||Oct 18, 2011||Interrad Medical, Inc.||Anchor systems and methods|
|US8252004||Mar 25, 2011||Aug 28, 2012||Interrad Medical, Inc.||Temporary retention device|
|US8277418||Nov 22, 2010||Oct 2, 2012||Alcon Research, Ltd.||Ophthalmic valved trocar cannula|
|US8328764||Feb 6, 2009||Dec 11, 2012||Interrad Medical, Inc.||System for anchoring medical devices|
|US8343106||Nov 22, 2010||Jan 1, 2013||Alcon Research, Ltd.||Ophthalmic valved trocar vent|
|US8343108||Sep 29, 2010||Jan 1, 2013||Interrad Medical, Inc.||Systems and methods for anchoring medical devices|
|US8444603||Sep 8, 2011||May 21, 2013||Interrad Medical, Inc.||Anchor systems and methods|
|US8579864||Jan 10, 2013||Nov 12, 2013||Interrad Medical, Inc.||Anchor systems and methods|
|US8679064||Aug 13, 2012||Mar 25, 2014||Alcon Research, Ltd.||Ophthalmic valved trocar cannula|
|US8715295||Jul 18, 2012||May 6, 2014||Interrad Medical, Inc.||Temporary retention device|
|US8771232||Aug 17, 2011||Jul 8, 2014||Interrad Medical, Inc.||Anchor device and method|
|US8795326||Oct 2, 2008||Aug 5, 2014||Covidien Lp||Expanding seal anchor for single incision surgery|
|US8956329||Dec 5, 2012||Feb 17, 2015||Interrad Medical, Inc.||Systems and methods for anchoring medical devices|
|US8974434||Nov 9, 2012||Mar 10, 2015||Interrad Medical, Inc.||System for anchoring medical devices|
|US8986257||Nov 15, 2012||Mar 24, 2015||Interrad Medical, Inc.||System for anchoring medical devices|
|US9056187||Nov 1, 2013||Jun 16, 2015||Interrad Medical, Inc.||Anchor systems and methods|
|US9227040||Mar 19, 2014||Jan 5, 2016||Interrad Medical, Inc.||Temporary retention device|
|US9314596||Oct 11, 2012||Apr 19, 2016||Interrad Medical, Inc.||Systems and methods for anchoring medical devices|
|US9381322||Jan 12, 2015||Jul 5, 2016||Interrad Medical, Inc.||Systems and methods for anchoring medical devices|
|US9381323||Jun 2, 2014||Jul 5, 2016||Interrad Medical, Inc.||Anchor device and method|
|US9474518||Jun 20, 2014||Oct 25, 2016||Covidien Lp||Expanding seal anchor for single incision surgery|
|US20040024362 *||Apr 11, 2003||Feb 5, 2004||Hugh Trout||Stabilizing surgical delivery apparatus and method of use|
|US20050187578 *||Mar 18, 2005||Aug 25, 2005||Rosenberg Michael S.||Temporary retention device|
|US20070106330 *||Nov 22, 2006||May 10, 2007||Interrad Medical, Inc.||Temporary retention device|
|US20070225651 *||Mar 9, 2006||Sep 27, 2007||Rosenberg Michael S||Anchor device and method|
|US20090093850 *||Oct 2, 2008||Apr 9, 2009||Tyco Healthcare Group Lp||Expanding seal anchor for single incision surgery|
|US20090326470 *||Sep 3, 2009||Dec 31, 2009||Interrad Medical, Inc.||Anchor Device and Method|
|US20100016801 *||Jul 16, 2008||Jan 21, 2010||Interrad Medical, Inc.||Anchor Systems and Methods|
|US20100204656 *||Feb 6, 2009||Aug 12, 2010||Interrad Medical, Inc.||System for anchoring medical devices|
|US20110152774 *||Nov 22, 2010||Jun 23, 2011||Jose Luis Lopez||Ophthalmic valved trocar cannula|
|US20110152775 *||Nov 22, 2010||Jun 23, 2011||Jose Luis Lopez||Ophthalmic valved trocar vent|
|US20110172607 *||Mar 25, 2011||Jul 14, 2011||Interrad Medical, Inc.||Temporary Retention Device|
|US20110177975 *||Mar 25, 2011||Jul 21, 2011||Cornell Research Foundation, Inc.||Detection of nucleic acid sequence differences using the ligase detection reaction with addressable arrays|
|US20110295176 *||Jun 25, 2008||Dec 1, 2011||Zarate Alfredo R||Venous device|
|USRE45638 *||Aug 14, 2002||Aug 4, 2015||Abbott Cardiovascular Systems Inc.||Apparatus for percutaneously performing myocardial revascularization having means for sensing tissue parameters and method of use|
|WO1988006864A1 *||Mar 18, 1988||Sep 22, 1988||National Standard Company||Localization needle assembly|
|U.S. Classification||604/164.4, 604/175, D24/114|
|International Classification||A61M25/04, A61M19/00, A61M25/02|
|Cooperative Classification||A61M25/04, A61M19/00|
|European Classification||A61M25/04, A61M19/00|