|Publication number||US3605750 A|
|Publication date||20 Sep 1971|
|Filing date||7 Apr 1969|
|Priority date||7 Apr 1969|
|Also published as||CA929064A, CA929064A1, DE2016607A1, DE2016607B2|
|Publication number||US 3605750 A, US 3605750A, US-A-3605750, US3605750 A, US3605750A|
|Inventors||Isaac S Jackson, David S Sheridan|
|Original Assignee||David S Sheridan|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (178), Classifications (9), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Sept. 20, 1971 D. s. SHERIDAN EFAL 3,605,750
X-RAY TIP CATHETER Filed April 7, 1969 4 Sheets-Sheet 1 Sept. 20, 1971 0. s. SHERIDAN ETAL 3,605,750
X-RAY TIP CATHETER 4 Sheets-Sheet 2 Filed April 7, 1969 P 1971 o. s. SHERIDAN EIAL 3,605,750
X-RAY TIP CATHETER 4. Sheets-Sheet 3 Filed April 7. 1969 Sept. 20, 1971 D. s. SHERIDAN ETAL 3,605,750
X-RAY TIP CATHETER Filed April 7, 1969 4 Sheets-Sheet 4.
United States Eatent O 3,605,750 X-RAY TIP CATHETER Dav d S. Sheridan, Argyle, and Isaac S. Jackson, Greenwich, N.Y., assignors to David S. Sheridan, Argyle,
Filed Apr. 7, 1969, Ser. No. 814,061 Int. Cl. A61m 25/00 US. Cl. 128348 9 Claims ABSTRACT OF THE DISCLOSURE BACKGROUND OF THE INVENTION In order to reduce the possibility of cross-infections and eliminate the expense of sterilization of reusable type catheters and other medico-surgical tubes, extensive use is being made of disposable-type catheters designed for single patient and single use. Such disposable catheters are almost exclusively produced by extrusion of waterproof plastic material which is non-toxic, non-absorptive and resistant to attack or deterioration by fluids of body tissue into which the catheter or other medico-surgical tube may be inserted in the course of a surgical or clinical operation (see US. 2,940,126).
In many surgical or clinical procedures, it is important to be able to determine the location or position of the catheter within the body of the patient into which it has been inserted. X-ray observations, e.g., photographic or fluoroscopic, is a convenient method of making this position determination, but the usual plastic material from which the disposable catheters are formed is not X-ray opaque. Accordingly, several catheters constructions have been devised in order to permit the body position of catheters to be determined by X-ray observation. One known construction makes the entire tube opaque to both visible light and X-rays by incorporation of pigment through the tube. Another has been to form on catheters disconnected lines of X-ray opaque material (see US. 2,212,334). A further method has been to extrude plastic material into tubular form with a continuous X-ray opaque strip extending longitudinally along the entire length (see US. 2,857,915).
In many surgical or clinical operations, it is the location of the distal end portion of the catheter which is most important to know. The requirement may be for knowledge of the position of the distal tip of the catheter, or, for the position of the most proximal eye in the distal end portion which extends through the side wall of the catheter a short distance back from the distal tip. Such distal end portion opening determination has been accomplished by interrupting a continuous X-ray line formed integrally in a catheter by an opening in the distal end portion of the catheter (see US. 3,190,290).
The variety of medical and surgical procedures for which catheters are employed require a variety of inlet opening configurations in the distal end portions of catheters, e.g., gastro-intestinal catheters. In some catheters, a single opening is employed which constitutes the distal tip of the catheter. In others, the catheter distal tip is closed while the inlet opening constitutes an eye through ice the side wall of the catheter (see US. 2,857,915). In other cases, both a tip opening and one or more side wall holes may be required (see US. 3,190,290). These openings may be formed by punching, cutting, abrading or the like. In any event, creation of holes or openings which are smooth and which will not create irritation or injury to delicate tissues into which the catheters may be inserted are essential if the catheters are to be acceptable to hospital administrators, surgeons or other parties involved with purchase and use of these products. Various techniques are employed to create acceptably smooth surfaces in holes or like openings required in catheters (see US. 2,972,779). Any procedure of this type which is used must not adversely aiiect the strength, non-toxic or other essential characteristics of the catheter and should not materially increase the costs of manufacture.
OBJECTS The principal object of this invention is the provision of new forms of catheters of the single use disposable type made from waterproof, non-fibrous plastic material which permit the position of the distal end portion of the catheter within living tissue into which the catheter may be inserted to be determined by X-ray observation.
Further objects include the provision of:
(1) New methods of making plastic catheters which simultaneously create smooth rounded surface inlet openings in the distal end portion of catheters and provides an X-ray observable marking upon the distal end portion of the catheter.
(2) New catheter constructions which enable X-ray observation to determine where the tip of a catheter is within living tissue into which the catheter is inserted and the angle of the tip within the tissue, an accomplishment which cannot be attained through the use of X-ray line catheters known heretofore.
(3) New catheter constructions which provide greater X-ray opacity contrast than has been possible with related X-ray marked medico-surgical tubes known heretofore.
(4) Catheters having smoothly rounded inlet openings in the distal end portion which are defined by an integral X-ray opaque annulus and which can be manufactured and sold at costs competitive with related plastic disposable catheters available heretofore which do not include such improved features.
(5) Such catheters in which tendency of the catheter to bend or buckle at an inlet eye during use is mitigated.
Other objects and further scope of applicability of the present invention will become apparent from the detailed description given hereinafter; it should be understood, however, that the detailed description, while indicating preferred embodiments of the invention, is given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description. It should also be understood the foregoing abstract of the disclosure is for the purpose of providing a non-legal brief statement to serve as a searching-scanning tool for scientists, engineers and researchers and is not intended to limit the scope of the invention as disclosed herein nor is it intended it should be used in interpreting or in any way limiting the scope or fair meaning of the appended claims.
SUMMARY OF THE INVENTION These objects are accomplished according to the present invention by forming catheters of transparent, non-fibrous, waterproof plastic material, that is non-absorptive to body fluids, with a distal end portion of the catheter having a plastic member fused to the tube, the member containing X-ray opaque pigment uniformly dispersed therein in suflicient quantity to permit it to be observed by X-rayswithin living tissue into which the catheter may be inserted.
The objects are further accomplished according to the invention by a method of making such new plastic catheters with the X-ray observation outlined portion which comprises:
(a) Forming non-fibrous, transparent tubing of waterproof plastic material by extrusion,
(b) Cutting the tubing into a length required of a catheter,
(c) Forming at least one inlet opening in the distal end portion of said length of tubing,
(d) Providing an annulus wafer or like member of plastic material containing X-ray opaque pigment uniformly dispersed therein of desired configuration, and
(e) Fusing said member to said tube by heat and pressure to render the member integral with said tubing and form a smooth surface on the tube.
The determination of the location of a distal end portion of catheters is most important in endotracheal tubes, suction catheters, stomach tubes, gastro-intestinal catheters, thoracic catheters, abdominal sump drains, heart catheters, ureteral catheters, and feeding tubes and the new structures and methods of the invention are most advantageously applied to such catheters. Actually, the term catheter as used in this specification and the accompanying claims is intended to mean any medicosurgical tube which includes a proximal end, a distal end portion and a longitudinal bore extending therebetween, with the distal end portion having one or more inlet openings therein and which are designed for insertion into some tissue, organ, cavity, e.g., vascular or arterial branch, or the like in a patient to serve as a channel for removing fluids from or introducing fluids into the tissue, organ or the like within the patient. As just stated in connection with the types of products to which the invention is most advantageously applied, these devices are sometimes referred to as tubes and other times as catheters. For the sake of brevity and consistency, the term catheter is used as a general designation for any medico-surgical devices of this type,, including those having a single lumen or those of a multiple lumen type. It will be further understood by those skilled in the art that these catheters may be further combined with syringes, valves, fluid traps or other units in creating assemblies required for the particular medical or clinical procedure being applied to the patient.
In one preferred embodiment of catheters of the invention, only a single inlet opening is provided in the distal end portion and this constitutes the tip or extreme end of the catheter. In another embodiment, the catheter has one or more internal X-ray opaque inlet openings in the distal end portion and, preferably, one of such openings defines the distal tip or distal extreme end of the catheter and another defines the most proximal inlet opening extending through the side wall thereof. Advantageously, the side wall opening is of a measured predetermined length from the distal tip and this length is related to the type of the catheter and its nominal size. As is well known to the medical profession, catheter sizes may be designated in terms of actual diameters of the tube lumen, e.g., 5.5 mm. ID. or in terms of some arbitrary O.D. size designation, e.g., French.
Although the new methods and resulting catheters of the invention may be used with any suitable thermoplastic material known to be useful in the manufacture of medico-surgical tubing, the invention is advantageously utilized in the production of catheters by extrusion from plasticized vinyl chloride polymers.
BRIEF DESCRIPTION OF THE DRAWINGS Further understanding of the structure of the new catheters of the invention and their method of production may be had by reference to the accompanying drawings in which:
FIG. 1 is a perspective view of a catheter prepared in accordance With the invention.
FIG. 2 is an enlarged fragmentary view of the distal end portion of the catheter of FIG. 1.
FIG. 3 is an end view of the catheter of FIG. 1.
FIG. 4 is a diagrammaticfragmentary view partially in section illustrating a stepin the manufacture of the new catheters.
FIG. 5 is a fragmentary side view partially in section illustrating the completion of the manufacturing operation as shown in FIG. 4.
FIG. 6 is a perspective, fragmentary view of another form of catheter in accordance .with the invention.
FIG. 7 is a perspective, fragmentary view of an open end form of catheter according to theinvention.
vFIG. 8 is a fragmentary, side view of the catheter distal end portion of FIG. 7. I
FIG. 9 is a perspective, fragmentary view. of a closed end form of catheter according to the invention.
FIG. 10 is a fragmentary,.side view of the catheter distal end portion of FIG. 9.
' FIG. 11 is a perspective, fragmentary view of the distal end portion of a catheter haxing X-ray outlined open end, side eye and indicator dot in accordance with the invention.
FIG. 12 is a perspective, fragmentary view of another embodiment of catheter similar to FIG. 11, but with an X-ray band indicator instead of a dot.
FIG. 13 is a perspective fragmentary view of yet another form of catheter in accordance with the invention.
FIG. 14 is an exploded, perspective, fragmentary view illustrating a step in the production of the catheter of FIG. 13.
FIG. 15 is a perspective, fragmentary view of a further embodiment of a catheter in accordance with the invention.
FIG. 16 is an exploded, perspective, fragmentary view illustrating a step in the production of the catheter of FIG. 15.
DESCRIPTION OF PREFERRED EMBODIMENTS Referring in detail to the drawing, the catheter 2 constitutes an endotracheal tube having a proximal end 4, a distal end portion 6 and a longitudinal bore 8 extending therebetween. 'The catheter 2 is formed of transparent, nonfibrous, waterproof plastic material and in the central body portion 10 designations 12, such as ink embossed markings, are provided to indicate the distance along the catheter from the inlet tip, e.g., 12, 13.5 and 15 cm. for a 5.5 mm. I.D. size endotracheal tube.
FIG. 2 illustrates in more detail the construction of the distal end portion of the catheter 2 which has a single inlet opening 14, the locus of which is a plane running at an acute angle to the axis of the longitudinal bore 8 of the catheter. Accordingly, the periphery 16 of the opening 14 is elliptical in shape when viewed from the side as in FIG. 2. However, when viewed end on as in FIG. 3, the inlet opening appears circular since it defines the tip or extreme end of the catheter and presents in section the full lumen of the catheter. The periphery. 16 of the X-ray opaque plastic section is of limited longitudinal. extent relative to the length of the tube and of varied displacement relative to the longitudinal axis of the tube.
The periphery 16 of the opening 14 has smoothly rounded edges 18 and the opening is defined by an integral plastic annulus containing X-ray opaque pigment uniformly dispersed therein. 1
In contrast to X-ray marked catheters'known hereto fore, it is possible with X-ray tip catheters of this invention to determine the angle-of the tip relative to tissue within which the catheter may be inserted. Further, since the X-ray tip when radiated from the side, such as in the plane of the drawing of FIG. 5, will give a screening to the X-rays by more than double the thickness of the wall of the catheter. Accordingly, the opacity contrast which can be attained is critically improved as compared to the single thickness screening which can be obtained with continuous line X-ray marking such as known heretofore.
Construction of peripheral outline X-ray openings in catheters according to the invention can be obtained by the methods diagrammatically illustrated in FIGS. 4 and 5. This is started by provision of a suitably sized tube which can be created in any suitable fashion. Advantageously, a section of plastic tubing 20 is formed of nonfibrous transparent waterproof plastic material by extrusion. This tubing is then cut into a required length for a catheter and one or more inlet openings are cut in its distal end portion. In the tubing 20 of FIG. 4, this is done by slicing the end 22 on the tubing 20 at an acute angle to the longitudinal bore 24 which extends through the tubing. In a separate operation, a plastic washer or annulus 26 containing X-ray opaque pigment uniformly dispersed therein is created, such as by extruding tubing of plastic material with the opaque pigment and then slicing washers, such as the washer 26, from it. This combination is then inserted into a suitably shaped die and while heat is used to soften the tubing end and washer 26, pressure is applied to force the assembly together and form an integral unit from the tube 20 and the plastic annulus 26 as shown in FIG. 5. Such heated pressing of the assembly will fuse the annulus to the tube and at the same time create the rounded edge 28 on the inlet opening.
As shown in FIG. 6, other forms of catheters in accordance with the invention may have a plurality of inlet openings in the distal end portion each presenting the X-ray detection feature. Thus, the catheter 30 has a square end tip 32 defined by the integral X-ray opaque pigment containing annulus and a second inlet opening 34 extending through the side wall of the tube 30 defined by another integral plastic annulus 36 containing uniformly dispersed X-ray opaque powder.
Another form of open end catheter 40 is shown in FIGS. 7 and 8. The X-ray opaque distal tip 42 is slightly restricted in cross-section as compared with the lumen of the tube. Most open end catheters are of this reduced tip area type.
A closed end form of catheter 44 is shown in FIGS. 9 and 10. The X-ray opaque tip 46 is produced by fusing a flat wafer of X-ray opaque plastic to the open end of the tube 38 and at the same time molding the heat softened wafer into the rounded shape of the tip 46.
The catheter 50 shown in FIG. 11 comprises an X-ray opaque outlined open tip 52, X-ray eye 54 and X-ray dot 56. The tip 52 and eye 54 are formed by fusing and molding suitably sized X-ray opaque plastic rings to the periphery of holes in the tube 58. The dot 56 is formed by fusing an X-ray opaque plastic wafer to a hole in the side wall of the tube 58, at the same time molding the wafer so as to form a smooth butt joint between the tube and the wafer.
The formation of the eye 54 as described can provide, in addition to the X-ray outline feature, another advantage, i.e., a stiffening of the tube Wall surrounding the eye. As is well known by users of plastic catheters, they have a tendency to bend or buckle at the inlet eyes when being inserted in a patient or otherwise handled. This buckling can cause injury to the patient or present other problems to the correct insertion or use of the catheter. By using an X-ray opaque plastic annulus which is formed of stiffer or more rigid plastic material than the tube 58 to which it is fused, the resulting integral X-ray outlined eye structure 54 exhibits appreciably less tendency to bend or buckle.
The form of catheter 60 seen in FIG. 12 comprises the X-ray tip 62, X-ray eye 64 and X-ray band 66. The band 66 is made of X-ray opaque plastic material and may be fused into the wall of the tube 68, either inside or outside. Alternatively, the band can be butt welded to a separate tube front portion 70 and main tube portion 68,
6 thereby making a catheter with uniform cross-section in the region of the band 66.
FIGS. 13 and 14 illustrate a catheter 72 having an X- ray band 74 at the catheter tip. Such a structure is useful where a greater X-ray opaque area is required than with the catheter 40 of FIG. 7. The catheter 72 can be made by pushing a tubular X-ray opaque plastic section 76 into the bore of the tube 78 and welding the section 76 to the tube by solvent or by heat and pressure.
The form of catheter 80 shown in FIG. 15 comprises X-ray markings 82-88 formed from plastic filaments of X-ray material. A catheter of this type may be made by extrusion of a plastic tube having a main lumen 92 and a small wall bore 94. A section of X-ray opaque filament 96 is inserted into the bore 94. The X-ray opaque filament or rod 96 may be fused in the bore 94 at a de-' sired location by solvent action or by heat. Alternatively, the filament section may be held in position merely by a snug fit between it and the small lumen. After positioning of the X-ray opaque rod or filament, the exposed ends of the lumen 94 may be fused or otherwise sealed to close off the minor bore 94 from subsequent entrance of fluids. In this manner, a variety of X-ray markings may be created, e.g., the tip marking 82, the eye location marking formed by the interruption between filament portions 84 and 86, and a reference marker 88 to designate a given distance along the catheter from the tip 98.
In the use of catheters of the new type as described, special handling procedures are not required. Thus, the new catheters can be sterilized, handled, packaged, manipulated or stored under the same conditions and handling procedures familiar to physicians, surgeons and other personnel accustomed to working with the disposable plastic typecatheters. Moreover, the catheters can be formed to include bubbles, tapered sections, O-ring additions or any other auxiliary elements with which catheters are now produced or may be required to be formed in the future. Similarly, the catheters may be made to have substantially uniform wall thickness throughout their length or, where special application or professional preference dictates, tapered portions or wall sections of varied thickness may be provided in the catheters by air blowing, vacuum drawing or other techniques known to the plastics art.
The embodiments of the invention in which an exclusive property or right is claimed are defined as follows:
1. A catheter formed of transparent, non-fibrous, waterproof plastic material that is non-absorptive to body fluids, having a proximal end, a distal end portion and at least one longitudinal bore extending therebetween, said distal end portion comprising at least one inlet opening, the periphery of said opening being smoothly rounded and being defined by an integral plastic annulus containing X-ray opaque pigment uniformly dispersed therein in sufficient quantity to permit the position of the distal end of the catheter within living tissue into which the catheter may be inserted to be determined by X-ray observation.
2. A catheter as claimed in claim 1 having a single inlet opening in the distal end portion, said opening defining the extreme end and presenting the full lumen of the catheter.
3'. A catheter as claimed in claim 2 wherein the locus of said opening is a plane which is at an acute angle to the axis of the longitudinal bore of the catheter, said opening being elliptical in shape.
4. A medico-surgical tube as claimed in claim 1 wherein said annulus is made of plastic material which is more rigid than the plastic material of which said catheter is formed.
5. A catheter as claimed in claim 1 wherein said inlet opening extends through the side wall of said distal end portion.
6. A catheter as claimed in claim 1 wherein there are a plurality of said integral X-ray opaque inlet openings in the distal end portion of the catheter, one of said openings defining the tip of the catheter and another defining the most proximal opening extending through the side wall thereof.
7. A catheter as claimed in claim 5 wherein the distance between said distal ti opening and said side wall opening is of measured, predetermined length related to the type and size of the catheter.
8. A catheter formed of transparent non-fibrous, waterproof plastic material having a proximal end, a major longitudinal bore, a minor longitudinal bore, and a distal end portion having a plurality of inlet openings therein, one of said openings defining the tip of the catheter and a second opening extending through the side wall of said distal end portion, said minor bore being of a diameter less than the wall thickness of the catheter and positioned within the Wall of the catheter with the catheter presenting substantially smooth inner and outer walls, said second opening interrupting said minor bore in said distal end portion, a section of X-ray opaque filament or rod being fixed in said minor bore on each side of said second opening marking the distal and proximal extremities of said second opening, said minor bore being closed at the ends against entrance of fluids.
9. A catheter of claim '8 wherein a section of X-ray opaque filament or rod extends to the tip of the catheter, the periphery of said opening in the catheter tip is smoothly rounded and the distal extremity of section that extends to said tip is included in a portion of said periphery.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4150676 *||1 Jul 1975||24 Apr 1979||National Catheter Corp.||Endotracheal tubes with intubation direction control means|
|US4464176 *||4 Jun 1982||7 Aug 1984||Mallinckrodt, Inc.||Blood vessel catheter for medicine delivery and method of manufacture|
|US4531943 *||8 Aug 1983||30 Jul 1985||Angiomedics Corporation||Catheter with soft deformable tip|
|US4571240 *||12 Aug 1983||18 Feb 1986||Advanced Cardiovascular Systems, Inc.||Catheter having encapsulated tip marker|
|US4588399 *||3 Apr 1984||13 May 1986||Shiley Incorporated||Cannula with radiopaque tip|
|US4633864 *||22 Oct 1984||6 Jan 1987||Dacomed Corporation||Speaking endotracheal tube|
|US4645490 *||18 Dec 1984||24 Feb 1987||The Kendall Company||Nephrostomy catheter with formed tip|
|US4657024 *||19 Aug 1985||14 Apr 1987||Teleflex Incorporated||Medical-surgical catheter|
|US4662404 *||15 May 1981||5 May 1987||Leveen Harry H||Flexible tubing|
|US4685457 *||29 Aug 1986||11 Aug 1987||Donenfeld Roger F||Endotracheal tube and method of intubation|
|US4722344 *||23 May 1986||2 Feb 1988||Critikon, Inc.||Radiopaque polyurethanes and catheters formed therefrom|
|US4774949 *||14 Jun 1983||4 Oct 1988||Fogarty Thomas J||Deflector guiding catheter|
|US4781682 *||13 Aug 1987||1 Nov 1988||Patel Piyush V||Catheter having support flaps and method of inserting catheter|
|US4784638 *||17 Sep 1987||15 Nov 1988||Neurodynamics, Inc.||Angled hole ventricular catheter and method of making same|
|US4787892 *||4 Jan 1988||29 Nov 1988||The Kendall Company||Nephrostomy catheter with formed tip|
|US4796637 *||17 Jun 1987||10 Jan 1989||Victory Engineering Company||Radiopaque marker for stereotaxic catheter|
|US4834726 *||11 Mar 1987||30 May 1989||Ballard Medical Products||Medical ventilating and aspirating apparatus and methods|
|US4838879 *||1 May 1987||13 Jun 1989||Terumo Kabushiki Kaisha||Catheter|
|US4903702 *||17 Oct 1988||27 Feb 1990||Ad-Tech Medical Instrument Corporation||Brain-contact for sensing epileptogenic foci with improved accuracy|
|US4938741 *||31 Oct 1989||3 Jul 1990||Ballard Medical Products||Medical ventilating and aspirating apparatus and methods|
|US4967743 *||1 Dec 1988||6 Nov 1990||Ballard Medical Products||Neonatal closed system for involuntary aspiration and ventilation, and method|
|US4981466 *||1 Nov 1988||1 Jan 1991||Lumbert Richard C||Medical ventilating and aspirating apparatus and methods|
|US4990143 *||9 Apr 1990||5 Feb 1991||Sheridan Catheter Corporation||Reinforced medico-surgical tubes|
|US5017259 *||10 Oct 1989||21 May 1991||Terumo Kabushiki Kaisha||Preparation of catheter including bonding and then thermoforming|
|US5034005 *||9 Jul 1990||23 Jul 1991||Appling William M||Radiopaque marker|
|US5065754 *||6 Jun 1990||19 Nov 1991||Ballard Medical Products||Aspirating catheter tube inserter|
|US5081997 *||20 Jul 1989||21 Jan 1992||Vance Products Incorporated||Echogenic devices, material and method|
|US5107829 *||25 Apr 1990||28 Apr 1992||Ballard Medical Products||Neonatal closed system for involuntary aspiration and ventilation, and method|
|US5114401 *||23 Feb 1990||19 May 1992||New England Deaconess Hospital Corporation||Method for central venous catheterization|
|US5133345 *||14 Nov 1991||28 Jul 1992||Ballard Medical Products||Neonatal closed system for involuntary aspiration and ventilation, and method|
|US5171218 *||2 Jan 1992||15 Dec 1992||Trustees Of Boston University||Bidirectional femoral arterial cannula|
|US5177170 *||2 Jul 1992||5 Jan 1993||Miles Inc.||Radiopaque polyurethanes|
|US5180387 *||2 Nov 1988||19 Jan 1993||Neurodynamics, Inc.||Angled hole ventricular catheter with non-circular bore|
|US5201314 *||21 Jan 1992||13 Apr 1993||Vance Products Incorporated||Echogenic devices, material and method|
|US5203777 *||19 Mar 1992||20 Apr 1993||Lee Peter Y||Radiopaque marker system for a tubular device|
|US5209730 *||19 Dec 1989||11 May 1993||Scimed Life Systems, Inc.||Method for placement of a balloon dilatation catheter across a stenosis and apparatus therefor|
|US5209749 *||22 Jan 1992||11 May 1993||Applied Urology Inc.||Fluoroscopically alignable cutter assembly and method of using the same|
|US5215522 *||5 Apr 1991||1 Jun 1993||Ballard Medical Products||Single use medical aspirating device and method|
|US5277177 *||16 Jul 1991||11 Jan 1994||Ballard Medical Products||Single use medical aspirating device and method|
|US5289831 *||21 Apr 1992||1 Mar 1994||Vance Products Incorporated||Surface-treated stent, catheter, cannula, and the like|
|US5330433 *||18 Sep 1992||19 Jul 1994||Trustees Of Boston University||Bidirectional femoral arterial cannula|
|US5346981 *||13 Jan 1993||13 Sep 1994||Miles Inc.||Radiopaque polyurethanes|
|US5354288 *||24 Feb 1993||11 Oct 1994||Minnesota Mining And Manufacturing Company||Low velocity aortic cannula|
|US5358493 *||18 Feb 1993||25 Oct 1994||Scimed Life Systems, Inc.||Vascular access catheter and methods for manufacture thereof|
|US5389089 *||13 Oct 1992||14 Feb 1995||Imagyn Medical, Inc.||Catheter with angled ball tip for fallopian tube access and method|
|US5431639 *||12 Aug 1993||11 Jul 1995||Boston Scientific Corporation||Treating wounds caused by medical procedures|
|US5437290 *||14 May 1993||1 Aug 1995||Board Of Trustees Of The Leland Stanford Jr. University||System and method for monitoring intraluminal device position|
|US5439445 *||27 Jun 1994||8 Aug 1995||Boston Scientific Corporation||Support catheter assembly|
|US5472419 *||31 Jan 1994||5 Dec 1995||Imagyn Medical, Inc.||Catheter and method for depositing reproductive material into the reproductive tract of a female|
|US5507995 *||12 Jul 1994||16 Apr 1996||Scimed Life Systems, Inc.||Process for making a catheter|
|US5516010 *||1 Sep 1994||14 May 1996||Sherwood Medical Company||Sanitary speculum for tympanic thermometer probe|
|US5550378 *||10 Feb 1995||27 Aug 1996||Cardiac Mariners, Incorporated||X-ray detector|
|US5610967 *||10 Apr 1995||11 Mar 1997||Cardiac Mariners, Incorporated||X-ray grid assembly|
|US5611336 *||30 Mar 1995||18 Mar 1997||Ballard Medical Products, Inc.||Single use medical aspirating device and method|
|US5616137 *||22 Feb 1995||1 Apr 1997||Minnesota Mining And Manufacturing Company||Low velocity aortic cannula|
|US5643226 *||6 Oct 1994||1 Jul 1997||Minnesota Mining And Manufacturing||Low velocity aortic cannula|
|US5644612 *||10 Apr 1995||1 Jul 1997||Cardiac Mariners, Inc.||Image reconstruction methods|
|US5645065 *||11 Apr 1995||8 Jul 1997||Navion Biomedical Corporation||Catheter depth, position and orientation location system|
|US5651047 *||10 Feb 1995||22 Jul 1997||Cardiac Mariners, Incorporated||Maneuverable and locateable catheters|
|US5682412 *||20 Sep 1996||28 Oct 1997||Cardiac Mariners, Incorporated||X-ray source|
|US5685865 *||7 Oct 1994||11 Nov 1997||Minnesota Mining And Manufacturing Company||Low velocity aortic cannula|
|US5694922 *||19 Aug 1994||9 Dec 1997||Ballard Medical Products||Swivel tube connections with hermetic seals|
|US5725570 *||29 Feb 1996||10 Mar 1998||Boston Scientific Corporation||Tubular medical endoprostheses|
|US5729584 *||20 Sep 1996||17 Mar 1998||Cardiac Mariners, Inc.||Scanning-beam X-ray imaging system|
|US5751785 *||12 Nov 1996||12 May 1998||Cardiac Mariners, Inc.||Image reconstruction methods|
|US5833367 *||12 Nov 1996||10 Nov 1998||Trutek, Inc.||Tympanic thermometer probe cover|
|US5835561 *||10 Apr 1995||10 Nov 1998||Cardiac Mariners, Incorporated||Scanning beam x-ray imaging system|
|US5846199 *||15 Apr 1997||8 Dec 1998||Cordis Europa N.V.||Catheter with marker sleeve|
|US5859893 *||31 May 1996||12 Jan 1999||Cardiac Mariners, Inc.||X-ray collimation assembly|
|US5908413 *||3 Oct 1997||1 Jun 1999||Scimed Life Systems, Inc.||Radiopaque catheter and method of manufacture thereof|
|US5944712 *||31 Oct 1996||31 Aug 1999||Medtronic Ave, Inc.||Catheter size designation system|
|US5967992 *||3 Jun 1998||19 Oct 1999||Trutex, Inc.||Radiometric temperature measurement based on empirical measurements and linear functions|
|US5980451 *||12 Jan 1998||9 Nov 1999||Sherwood Services Ag||Disposable speculum with membrane bonding ring|
|US5984909 *||3 Sep 1998||16 Nov 1999||Daig Corporation||Coronary sinus catheter|
|US6001066 *||3 Jun 1998||14 Dec 1999||Trutek, Inc.||Tympanic thermometer with modular sensing probe|
|US6001085 *||23 Dec 1997||14 Dec 1999||Daig Corporation||Coronary sinus catheter|
|US6030117 *||3 Jun 1997||29 Feb 2000||Trutek, Inc.||Tympanic thermometer probe cover|
|US6036682 *||2 Dec 1997||14 Mar 2000||Scimed Life Systems, Inc.||Catheter having a plurality of integral radiopaque bands|
|US6042266 *||30 Mar 1998||28 Mar 2000||Trutek, Inc.||Tympanic thermometer probe cover|
|US6077258 *||3 Oct 1997||20 Jun 2000||Scimed Life Systems, Inc.||Braided angiography catheter having full length radiopacity and controlled flexibility|
|US6123454 *||11 Jun 1999||26 Sep 2000||Trutek, Inc.||Tympanic thermometer disposable probe cover with further stretching prevention structure|
|US6171295||20 Jan 1999||9 Jan 2001||Scimed Life Systems, Inc.||Intravascular catheter with composite reinforcement|
|US6179788||26 Jun 1996||30 Jan 2001||Scimed Life Systems, Inc.||Guide wire with multiple radiopaque sections and method of use|
|US6186959||12 Mar 1999||13 Feb 2001||Trutek, Inc.||Tympanic thermometer with modular sensing probe|
|US6277084||5 May 1997||21 Aug 2001||Boston Scientific Corporation||Ultrasonic medical device|
|US6277108 *||4 Jun 1999||21 Aug 2001||Medamicus, Inc.||Introducer with location marker|
|US6287331||12 May 1998||11 Sep 2001||Boston Scientific Corporation||Tubular medical prosthesis|
|US6290721||21 Oct 1997||18 Sep 2001||Boston Scientific Corporation||Tubular medical endoprostheses|
|US6302990 *||2 Mar 2000||16 Oct 2001||Medtronic, Inc.||Method of making a lined infusion catheter|
|US6354331||12 Jun 2000||12 Mar 2002||Parker-Hannifin Corp.||Flexible plastic tubing construction having a sight glass window|
|US6494203||12 Nov 1999||17 Dec 2002||Ballard Medical Products||Medical aspirating/ventilating closed system improvements and methods|
|US6497709||5 May 1997||24 Dec 2002||Boston Scientific Corporation||Metal medical device|
|US6508805||10 Oct 2000||21 Jan 2003||Scimed Life Systems, Inc.||Intravascular catheter with composite reinforcement|
|US6527802||23 Sep 1997||4 Mar 2003||Scimed Life Systems, Inc.||Clad composite stent|
|US6540721||29 Dec 1999||1 Apr 2003||Advanced Cardiovascular Systems, Inc.||Balloon catheter with flexible radiopaque polymeric marker|
|US6610016 *||4 Aug 1999||26 Aug 2003||Sts Biopolymers, Inc.||Echogenic coatings|
|US6709429||19 Jan 2000||23 Mar 2004||Scimed Life Systems, Inc.||Intravascular catheter with multiple axial fibers|
|US6866660||9 Jan 2003||15 Mar 2005||Scimed Life Systems, Inc.||Intravascular catheter with composite reinforcement|
|US6942654||19 Jan 2000||13 Sep 2005||Scimed Life Systems, Inc.||Intravascular catheter with axial member|
|US7033325||30 Oct 2000||25 Apr 2006||Scimed Life Systems, Inc.||Guidewire with multiple radiopaque marker sections|
|US7101392||8 Aug 2001||5 Sep 2006||Boston Scientific Corporation||Tubular medical endoprostheses|
|US7192404 *||12 Dec 2001||20 Mar 2007||Ethicon Endo-Surgery, Inc.||MRI compatible surgical biopsy device having a tip which leaves an artifact|
|US7229413||25 Aug 2003||12 Jun 2007||Angiotech Biocoatings Corp.||Echogenic coatings with overcoat|
|US7303798||21 Sep 2004||4 Dec 2007||Advanced Cardiovascular Systems, Inc.||Polymeric marker with high radiopacity for use in medical devices|
|US7341564 *||24 Apr 2002||11 Mar 2008||Boston Scientific Scimed, Inc.||Biopsy forceps device with transparent outer sheath|
|US7458967||30 Apr 2004||2 Dec 2008||Angiodynamics, Inc.||Endovascular treatment apparatus and method|
|US7797057||23 Oct 2003||14 Sep 2010||Medtronic, Inc.||Medical paddle lead and method for spinal cord stimulation|
|US7828793||21 Jan 2010||9 Nov 2010||Tyco Healthcare Group, Lp||Methods for treating a hollow anatomical structure|
|US7833597||24 Oct 2007||16 Nov 2010||Advanced Cardiovascular Systems, Inc.||Polymeric marker with high radiopacity for use in medical devices|
|US7837677||12 Jan 2010||23 Nov 2010||Tyco Healthcare Group, Lp||Systems for treating a hollow anatomical structure|
|US7837678||24 Feb 2010||23 Nov 2010||Tyco Healthcare Group, Lp||Systems for treating a hollow anatomical structure|
|US7963961||25 Oct 2010||21 Jun 2011||Tyco Healthcare Group Lp||Systems for treating a hollow anatomical structure|
|US7963962||9 Nov 2010||21 Jun 2011||Tyco Healthcare Group Lp||Methods for treating a hollow anatomical structure|
|US7976518||13 Jan 2005||12 Jul 2011||Corpak Medsystems, Inc.||Tubing assembly and signal generator placement control device and method for use with catheter guidance systems|
|US7985214||19 Jan 2005||26 Jul 2011||Boston Scientific Scimed, Inc.||Intravascular catheter with composite reinforcement|
|US8043285||19 Nov 2010||25 Oct 2011||Tyco Healthcare Group Lp||Systems for treating a hollow anatomical structure|
|US8092390 *||17 Jul 2002||10 Jan 2012||Smiths Group Plc||Medico-surgical devices|
|US8197494||8 Sep 2006||12 Jun 2012||Corpak Medsystems, Inc.||Medical device position guidance system with wireless connectivity between a noninvasive device and an invasive device|
|US8321019||21 Jul 2006||27 Nov 2012||Covidien Lp||Apparatus and method for ensuring safe operation of a thermal treatment catheter|
|US8585680||17 Apr 2007||19 Nov 2013||Cook Medical Technologies Llc||Endovascular device tip assembly incorporating a marker device and method for making the same|
|US8636729||21 Jul 2006||28 Jan 2014||Covidien Lp||Therapeutic system with energy application device and programmed power delivery|
|US8637132||12 Nov 2010||28 Jan 2014||Advanced Cardiovascular Systems, Inc.||Polymeric marker with high radiopacity for use in medical devices|
|US8721634||21 Jul 2006||13 May 2014||Covidien Lp||Apparatus and method for ensuring thermal treatment of a hollow anatomical structure|
|US8852178||12 Sep 2011||7 Oct 2014||Covidien Lp||Systems for treating a hollow anatomical structure|
|US9028441||7 Sep 2012||12 May 2015||Corpak Medsystems, Inc.||Apparatus and method used with guidance system for feeding and suctioning|
|US9131956||2 Jun 2011||15 Sep 2015||Corpak Medsystems, Inc.||Tubing assembly and signal generator placement control device and method for use with catheter guidance systems|
|US9433746 *||28 Jan 2015||6 Sep 2016||Siemens Medical Solutions Usa, Inc.||Markers for a medical ultrasound imaging catheter|
|US9579488||14 Sep 2015||28 Feb 2017||Corpak Medsystems, Inc.||Tubing assembly and signal generator placement control device and method for use with catheter guidance systems|
|US9636082||27 Nov 2012||2 May 2017||The Cooper Companies Global Holdings Lp||Medical-surgical devices|
|US9642591||27 Nov 2012||9 May 2017||The Cooper Companies Global Holdings Lp||Medical-surgical devices|
|US9687174||16 May 2012||27 Jun 2017||Corpak Medsystems, Inc.||Medical device position guidance system with wireless connectivity between a noninvasive and an invasive device|
|US9743904||22 Mar 2011||29 Aug 2017||The Cooper Companies Global Holdings Lp||Medico-surgical devices|
|US9782562||6 Jan 2016||10 Oct 2017||Angiodynamics, Inc.||Venous insufficiency treatment method|
|US9814513||26 Feb 2015||14 Nov 2017||Angiodynamics, Inc.||Endovascular plasma treatment device and method of use|
|US20010003795 *||12 Jan 2001||14 Jun 2001||Mitta Suresh||Catheter system and method for posterior epicardial revascularization and intracardiac surgery on a beating heart|
|US20030040756 *||17 Jul 2002||27 Feb 2003||Field Stephen James||Medico-surgical devices|
|US20030097119 *||9 Jan 2003||22 May 2003||Scimed Life Systems, Inc.||Intravascular catheter with composite reinforcement|
|US20040077948 *||25 Aug 2003||22 Apr 2004||Sts Biopolymers, Inc.||Echogenic coatings with overcoat|
|US20040162543 *||9 Feb 2004||19 Aug 2004||Scimed Life Systems, Inc.||Intravascular catheter with multiple axial fibers|
|US20040260310 *||23 Oct 2003||23 Dec 2004||Medtronic, Inc.||Medical lead and method|
|US20050064223 *||22 Sep 2003||24 Mar 2005||Bavaro Vincent Peter||Polymeric marker with high radiopacity|
|US20050064224 *||21 Sep 2004||24 Mar 2005||Bavaro Vincent Peter||Polymeric marker with high radiopacity|
|US20050065434 *||29 Dec 2003||24 Mar 2005||Bavaro Vincent P.||Polymeric marker with high radiopacity for use in medical devices|
|US20050096642 *||30 Apr 2004||5 May 2005||Appling William M.||Endovascular treatment apparatus and method|
|US20050182388 *||19 Jan 2005||18 Aug 2005||Scimed Life Systems, Inc.||Intravascular catheter with composite reinforcement|
|US20050283226 *||18 Jun 2004||22 Dec 2005||Scimed Life Systems, Inc.||Medical devices|
|US20060253059 *||25 May 2005||9 Nov 2006||Edwards Lifesciences, Llc||Soft-flow aortic cannula tip|
|US20060293696 *||18 Apr 2006||28 Dec 2006||Salviac Limited||Retrieval catheter|
|US20070021811 *||19 Jul 2005||25 Jan 2007||Cardiac Pacemakers, Inc.||Medical device including radiopaque polymer coated coil and method therefor|
|US20070055359 *||25 Aug 2006||8 Mar 2007||Messer Stephen C||Vascular graft marker|
|US20070255140 *||25 Apr 2007||1 Nov 2007||Angiotech Biocoatings Corp.||Echogenic coatings with overcoat|
|US20070287957 *||17 Apr 2007||13 Dec 2007||Cook Incorporated||Endovascular device tip assembly incorporating a marker device and method for making the same|
|US20080065010 *||24 Oct 2007||13 Mar 2008||Advanced Cardiovascular Systems, Inc.||Polymeric marker with high radiopacity for use in medical devices|
|US20080208180 *||25 Apr 2008||28 Aug 2008||Cartier William A||Endovascular treatment sheath having a heat insulative tip and method for using the same|
|US20090287189 *||14 May 2008||19 Nov 2009||Becton, Dickinson And Company||Optimal radiopaque catheter|
|US20110070355 *||12 Nov 2010||24 Mar 2011||Advanced Cardiovascular Systems, Inc.||Polymeric marker with high radiopacity for use in medical devices|
|US20110172488 *||22 Mar 2011||14 Jul 2011||Smiths Group Plc||Medico-surgical devices|
|US20120245486 *||23 Mar 2012||27 Sep 2012||Anthony Melchiorri||Ghost-core biopsy needle|
|US20150143688 *||28 Jan 2015||28 May 2015||Siemens Medical Solutions Usa, Inc.||Markers for a medical ultrasound imaging catheter|
|US20160106501 *||17 Oct 2014||21 Apr 2016||Angiodynamics, Inc.||Endovascular Treatment Apparatus and Method|
|USRE42625||15 Mar 2006||16 Aug 2011||The Regents Of The University Of California||Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas|
|USRE42662||15 Mar 2006||30 Aug 2011||The Regents Of The University Of California||Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas|
|USRE42756||15 Mar 2006||27 Sep 2011||The Regents Of The University Of California||Endovascular electrolytically detachable wire and tip for the formation of thrombus in arteries, veins, aneurysms, vascular malformations and arteriovenous fistulas|
|DE2910749A1 *||19 Mar 1979||25 Sep 1980||Fresenius Chem Pharm Ind||Katheter mit roentgenkontraststreifen|
|DE2954080C2 *||19 Mar 1979||14 Jan 1988||Dr. Eduard Fresenius, Chemisch-Pharmazeutische Industrie Kg, 6380 Bad Homburg, De||Title not available|
|DE9111097U1 *||7 Sep 1991||14 Jan 1993||Haindl, Hans, Dr.Med., 3015 Wennigsen, De||Title not available|
|EP0040508A1 *||13 May 1981||25 Nov 1981||Shiley Incorporated||A cannula for inserting into the body|
|EP0100506A2 *||13 May 1981||15 Feb 1984||Shiley Incorporated||A method of forming a cannula, and a dielectric heating device for forming a cannula|
|EP0100506A3 *||13 May 1981||5 Feb 1986||Shiley Incorporated||A method of forming a cannula, and a dielectric heating device for forming a cannula|
|EP0132215A1 *||5 Jun 1984||23 Jan 1985||FOGARTY, Thomas J.||Deflector guiding catheter|
|EP0397357A1 *||26 Apr 1990||14 Nov 1990||Schneider (Usa) Inc.,||Monorail catheter with guidewire port marker|
|EP0801956A1 *||11 Apr 1997||22 Oct 1997||Cordis Europa N.V.||Catheter with marker sleeve|
|EP1527748A1 *||1 Nov 2004||4 May 2005||Angiodynamics, Inc.||Apparatus for thermal vascular treament|
|WO1981001519A1 *||14 Nov 1980||11 Jun 1981||Baxter Travenol Lab||Neonate umbilical catheter|
|WO1982000413A1 *||19 Jun 1981||18 Feb 1982||Lab Abbott||Improved radiopaque medical tubing|
|WO1991012836A1 *||8 Feb 1991||5 Sep 1991||New England Deaconess Hospital Corporation||Apparatus and method for central venous catheterization|
|WO1994003230A1 *||4 Aug 1993||17 Feb 1994||Boston Scientific Corporation||Support catheter assembly|
|WO2001034366A1||25 Oct 2000||17 May 2001||Parker-Hannifin Corporation||Flexible plastic tubing construction having a sight glass window|
|U.S. Classification||600/435, 604/529, 138/155, 252/478|
|International Classification||A61B19/00, A61M25/01|
|Cooperative Classification||A61B19/54, A61M25/0108|
|14 Feb 1986||AS||Assignment|
Owner name: MALCO, INC., ST. LOUIS, MISSOURI A CORP. OF DE.
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MALLINCKRODT, INC.;REEL/FRAME:004572/0411
Effective date: 19860102
Owner name: MALLINCKRODT, INC.
Free format text: CHANGE OF NAME;ASSIGNOR:MALCO, INC.;REEL/FRAME:004572/0403
Effective date: 19860101