US3714945A - Digit manipulable quick release cannula insertion device - Google Patents
Digit manipulable quick release cannula insertion device Download PDFInfo
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- US3714945A US3714945A US00099111A US3714945DA US3714945A US 3714945 A US3714945 A US 3714945A US 00099111 A US00099111 A US 00099111A US 3714945D A US3714945D A US 3714945DA US 3714945 A US3714945 A US 3714945A
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- cannula
- hub member
- stylet
- digit
- engageable means
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- 238000003780 insertion Methods 0.000 title claims abstract description 30
- 230000037431 insertion Effects 0.000 title claims abstract description 30
- 210000003813 thumb Anatomy 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 8
- 238000007920 subcutaneous administration Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000004513 sizing Methods 0.000 claims description 5
- 238000001802 infusion Methods 0.000 abstract description 3
- 210000003811 finger Anatomy 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- -1 polypropylene Polymers 0.000 description 3
- 210000003462 vein Anatomy 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 210000004204 blood vessel Anatomy 0.000 description 2
- 210000005224 forefinger Anatomy 0.000 description 2
- 206010033675 panniculitis Diseases 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 210000004304 subcutaneous tissue Anatomy 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910000811 surgical stainless steel Inorganic materials 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/06—Body-piercing guide needles or the like
- A61M25/0606—"Over-the-needle" catheter assemblies, e.g. I.V. catheters
Definitions
- ABSTRACT An over-the-needle catheter insertion device wherein the catheter and needle are connected to respective interconnecting hub members.
- the catheter hub member is connectable to an infusion source.
- the catheter hub member has an outwardly extending ridge molded integrally therewith, providing a means by which the catheter hub and needle hub can be separated by manipulation of only one hand.
- PATENIEDFEB 6 I973 INVENTOR VAYDE N E STANLEY 0 mm On 0m 4 ND 0 i mv v I 7 ATTORNEYS DIGIT MANIPULABLE QUICK RELEASE CANNULA INSERTION DEVICE BACKGROUND OF THE INVENTION in the prior art.
- the medical instruments supply indus- 1 try continuously strives to improve such devices in an attempt to provide simpler, easier to use, disposable devices than are presently on the market. For example, some of the more recent improvements relate to the means for tying down the catheter after the needle has been removed and to the catheter construction itself.
- auxiliary function is the depression of or pressure which must be applied to the patients blood vessel at the point of entry of the catheter into the vessel or upstream therefrom. This is done as the needle is extracted or removed from the interior of the catheter to prevent blood loss which will occur through the catheter before it can be connected to an infusion device.
- the present invention therefore, provides a subcutaneous catheter insertion device comprising: a stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a stylet hub member having a distal receiving end, a flexible cannula slidably disposed over the stylet, the distal end of the cannula terminating short of and tapering toward the distal end of the stylet, a cannula hub member in which the proximal end of the cannula is mounted, the cannula hub member removably disposed over the distal receiving end of the needle hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of the cannula hub member from the stylet hub member.
- FIG. I is a top view of the cannula insertion device of the present invention.
- FIG. 2 is a side view of the stylet hub member of the present invention
- FIG. 3 is a side elevational view of the cannula hub member of the present invention.
- FIG. 4 is a front view of the cannula hub member of the present invention.
- FIG. 5 is a partially exploded elevational cross-sectional view of the cannula, cannula hub member, stylet, stylet hub member and handle means of the present invention
- FIG. 6 is a view of the insertion of the cannula of the present invention into a patients appendage.
- FIG. 7 is a view of the removal of the stylet from the interior of the cannula of the present invention.
- a cannula or catheter hub member 10 is slidably disposed at its proximal end over the distal end of a stylet or needle hub member 12.
- a handle means which in this instance comprises a syringe l4 removably disposed in a socket in the proximal end of the stylet hub member.
- a pointed stylet, in this case hollow needle 16 is firmly mounted in the distal end of the stylet hub member, hereinafter the needle hub, 12.
- the pointed end 18 of the needle has been sharpened by grinding at a bevel with a circular grinding tool as is common in the art.
- a flexible cannula, in this embodiment flexible catheter 20 is firmly mounted in the distal end of the cannula hub member 10, hereinafter the catheter hub 10.
- the flexible catheter 20 is slidably disposed over the exterior of the hollow needle 16 and terminates short of the pointed end 18.
- the distal end 22 of the flexible catheter is also ground so that its outside diameter approaches the outside diameter of the needle 16.
- the catheter 20 has an inside diameter which is approximately the same or very slightly larger than the outside diameter of the needle 16.
- the needle can be manufactured from any standard surgical steel available in the art.
- the catheter can be manufactured from polypropylene, polytetrafluoroethylene or any other suitable flexible material which can be extruded into a cannula or catheter as shown.
- the catheter material must be surgically compatible and nontoxic. Many such materials are available in the art.
- the other components of the present invention such as the catheter hub 10, the needle hub 12 and the handle means or syringe 14, can be manufactured from polypropylene, polyamides, polyesters or any other suitable thermoplastic material available to the art.
- the syringe 14, as shown, has been partially broken away since in reality the syringe is usually about 3 or more inches long in comparison to the 2 inch or less combined length of the needle hub 12 and the catheter hub 10.
- Such syringes are readily available commodities from medical supply houses which deal in disposable medical equipment.
- the primary purpose of providing a handle or syringe 14 is to increase the grip of the fingers as they are wrapped around the needle hub 12 and the handle 14.
- Such a handle facilitates insertion of a catheter and needle and also aids in the removal of the needle from the catheter as will be explained hereinafter.
- a side elevational view of the needle hub is provided.
- the needle hub 12 is provided first with a pair of side indentations 30 (also seen in FIG. 1) which facilitate grasping between a thumb and forefinger for initial insertion of the needle and catheter into subcutaneous tissue.
- an indicator 32 is also provided on the top portion of the needle hub, in this case a triangularly shaped raised portion, which points in the direction of the needle 16 and indicates when the beveled pointed end 18 is facing upwardly.
- the needle 16 is mounted in the distal end portion 34 of the needle hub by molding techniques well known in the art.
- the distal end portion 34 of the needle hub is generally circular in cross section.
- a portion 36 of circular cross section of greater diameter than the distal end portion 34 is provided.
- the enlarged portion 36 provides a shoulder 38, the function of which will be described specifically in conjunction with FIG. 5.
- a channel 40 is provided in the interior of the needle hub 12 which communicates with a female luer socket 42.
- the catheter hub 10 includes a body portion 50, a distal end 52 of generally circular cross section into which the catheter 20 is securely mounted. Again, techniques for mounting catheters in hubs such as catheter hub are well known in the art.
- the interior of the catheter communicates with an inwardly, forwardly tapering channel 54.
- the rear of tapering channel 54 communicates with channel portion 56 which opens onto the proximal end of the catheter hub 10.
- the channel portion 56 is generally of circular cross section and of slightly larger diameter than the distal end portion 34 of the needle hub.
- Channel portion 56 also forms a female luer socket.
- the channel portion 56 is then provided a pair of wings 62 which form a flat surface 64 on which the catheter hub 10 rests against a patients appendage or surface tissue.
- a second rib member 68 which also in certain positions is provided to be digit engageable.
- the rib member 60 is spaced forward of the proximal end of the catheter hub. This spacing in conjunction with the spacing of the entire catheter hub assembly 10 from the needle hub 12 provides sufficient distance for thumb or thumb nail engagement of the rib 60 so that the needle 16 and needle hub 12 can be removed from the catheter 20 and catheter hub 10.
- the catheter and needle assembly are inserted into a patients appendage, for example, an arm 80 and into the patients vein 82, shown partially broken away.
- the catheter 20 and needle 16 are inserted as a unit by grasping the needle hub 12 with a thumb and forefinger while wrapping the remaining fingers around the needle hub and syringe 14. This operation is well known to the ordinary doctor or technician who has utilized this type of device.
- the needle 16 is removed from the interior of the catheter hub 10 and catheter 20 after venipuncture has been accomplished. This, operation is effected by the doctor or technician by placing the thumb 84 or thumb nail 86 in a position to engage the rib 60 on the catheter hub 10.
- This single hand operation leaves the technicians other hand free to apply pressure in the area of capable of receiving the distal end portion 34 of the needle hub.
- the respective dimensions of the channel portion 56 and distal portion 34 provides a slidably and rotatably disposed connection between the needle hub 12 and the catheter hub 10.
- the shoulder 38 abuts againstthe rear portion 58 of the catheter hub so that the catheter hub will only slide a fixed distance over the distal end 34 of the needle hub 12. The reason for this will be apparent later.
- the catheter hub 10 is provided with a finger or digit engageable rib 60 which extends substantially radially the venipuncture in order to prevent blood flow through the catheter 20.
- the thumb or thumb nail 86 can engage therearward portion 58 or rib 68 of the catheter hub 10 to remove the needle hub 12 and the needle 16.
- a subcutaneous cannula insertion device comprisa stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter
- a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over said distal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member,
- said digit engageable means extending upwardly and circumferentially a sufficient distance to permit said digit to engage and remain in firm engagement during the separation of said cannula hub member and said stylet hub member, and during said separation to control the relative motion between said cannula and said stylet, said digit engageable means being oriented with respect to said cannula to lie at least along the upper circumferential surface when said device is in position to be introduced into a patient.
- said digit engageable means comprises a rib member extending outwardly from said cannula hub member and wherein said rib member extends substantially radially from said hub member at a substantially fixed distance from the axis of said cannula hub member and around at least a portion of the circumference thereof.
- the cannula insertion device of claim 3 wherein said cannula hub member has opposed sidewardly projecting wing members thereon, said wing members having means for attaching a tie down member thereto, said wings located substantially along said tangential line to provide in combination with said rib member a substantially flat surface capable of nonrotatably abutting surface tissue ofa patient.
- the cannula insertion device of claim 5 wherein said stylet comprises a hollow needle, said needle sharpened by a double grind facing in a predetermined direction, and wherein said cannula hub memberv has located thereon indicia means which indicates the direction in which said double grind on the distal end of said needle is facing.
- a subcutaneous cannula insertion device comprising:
- a stylet the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter
- a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over saiddistal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member,
- said digit engageable means extending outwardly to present a raised surface normal to said relatively thin walled cannula hub member, said raised normal surface extending along the upper portion of said device when said device is oriented in the position for insertion into a patient but terminating circumferentially on the underside of said device to provide a region of reduced diametrical proportions opposite on said underside,
- said digit engageable means comprises a generally U- shaped shoulder means carried on said cannula hub member with the central portion of said U-shaped shoulder means being located along the upper portion of said device when said device is oriented in position for insertion into the patient.
Abstract
An over-the-needle catheter insertion device wherein the catheter and needle are connected to respective interconnecting hub members. The catheter hub member is connectable to an infusion source. The catheter hub member has an outwardly extending ridge molded integrally therewith, providing a means by which the catheter hub and needle hub can be separated by manipulation of only one hand.
Description
United States Patent Stanley Feb. 6, 1973 DIGIT MANIPULABLE QUICK RELEASE CANNULA INSERTION DEVICE Vayden F. Stanley, Dallas, Tex.
Inventor:
Assignee: Vicra Sterile, Inc., Dallas, Tex.
Filed: Dec. 17, 1970 Appl. No.: 99,111
U.S. Cl ..l28/214.4, 128/221 Int. Cl. ..A6lm 05/00 Field of Search.....l28/2l4.4, 221, 348, DIG. 16
References Cited UNITED STATES PATENTS ll/l967 7/l969 l0/l968 Hirsch ..l28/2l4.4 Langdon ....l28/2l4.4 May ..l28/2l4.4
3,348,544 10/1967 7 Braun "128/2144 FOREIGN PATENTS OR APPLICATIONS 77,010 10/1948 l,534,l l8 6/1968 France ..l28/2l4.4
Primary Examiner-Dalton L. Truluck Attorney-Richards, Harris & Hubbard [57] ABSTRACT An over-the-needle catheter insertion device wherein the catheter and needle are connected to respective interconnecting hub members. The catheter hub member is connectable to an infusion source. The catheter hub member has an outwardly extending ridge molded integrally therewith, providing a means by which the catheter hub and needle hub can be separated by manipulation of only one hand.
8 Claims, 7 Drawing Figures Czechoslovakia. l28/214.4
PATENIEDFEB 6 I973 INVENTOR VAYDE N E STANLEY 0 mm On 0m 4 ND 0 i mv v I 7 ATTORNEYS DIGIT MANIPULABLE QUICK RELEASE CANNULA INSERTION DEVICE BACKGROUND OF THE INVENTION in the prior art. The medical instruments supply indus- 1 try continuously strives to improve such devices in an attempt to provide simpler, easier to use, disposable devices than are presently on the market. For example, some of the more recent improvements relate to the means for tying down the catheter after the needle has been removed and to the catheter construction itself. While operating such over-the-needle catheter devices of this general type, it is highly desirable to be able to effect single handed separation of the needle from the catheter after the combination has been inserted into subcutaneous tissue of a patient and generally into a blood vessel of the patient. Single handed manipulation is desirable since the operating or manipulating doctor or technician prefers to have his other hand free to perform auxiliary functions which necessarily or preferably must occur simultaneously with the separation of the needle from the catheter. An exemplary auxiliary function is the depression of or pressure which must be applied to the patients blood vessel at the point of entry of the catheter into the vessel or upstream therefrom. This is done as the needle is extracted or removed from the interior of the catheter to prevent blood loss which will occur through the catheter before it can be connected to an infusion device.
Other desirable features of this general type of device include a non-sticking connection or no connection between the catheter and needle, a method or way to determine in which direction a beveled sharpened needle is facing, and an improved tie down means for the catheter.
SUMMARY OF THE INVENTION The present invention, therefore, provides a subcutaneous catheter insertion device comprising: a stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a stylet hub member having a distal receiving end, a flexible cannula slidably disposed over the stylet, the distal end of the cannula terminating short of and tapering toward the distal end of the stylet, a cannula hub member in which the proximal end of the cannula is mounted, the cannula hub member removably disposed over the distal receiving end of the needle hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of the cannula hub member from the stylet hub member.
BRIEF DESCRIPTION OF THE DRAWINGS A better understanding of the present invention will be derived by reference to the ensuing specification in conjunction with the accompanying drawings in which:
FIG. I is a top view of the cannula insertion device of the present invention;
FIG. 2 is a side view of the stylet hub member of the present invention;
FIG. 3 is a side elevational view of the cannula hub member of the present invention;
FIG. 4 is a front view of the cannula hub member of the present invention;
FIG. 5 is a partially exploded elevational cross-sectional view of the cannula, cannula hub member, stylet, stylet hub member and handle means of the present invention;
FIG. 6 is a view of the insertion of the cannula of the present invention into a patients appendage; and,
FIG. 7 is a view of the removal of the stylet from the interior of the cannula of the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS The present invention will be described in relation to a preferred embodiment. It should be apparent to those of ordinary skill in the disposable medical supply art that many alterations, variations, substitutions, modifications and other changes can be made to the embodiment disclosed herein without departing from the original concept of the invention. It is intended that the invention be limited only by the definition contained in the appended claims. When referring to thevarious figures, like numerals will be utilized where applicable and appropriate for simplicity and ease of understandmg.
Referring first to FIG. 1, a preferred embodiment of the cannula insertion device of the present invention is illustrated. A cannula or catheter hub member 10 is slidably disposed at its proximal end over the distal end of a stylet or needle hub member 12. Removably attached to the proximal end of the stylet hub member is a handle means, which in this instance comprises a syringe l4 removably disposed in a socket in the proximal end of the stylet hub member. A pointed stylet, in this case hollow needle 16, is firmly mounted in the distal end of the stylet hub member, hereinafter the needle hub, 12. The pointed end 18 of the needle has been sharpened by grinding at a bevel with a circular grinding tool as is common in the art. A flexible cannula, in this embodiment flexible catheter 20, is firmly mounted in the distal end of the cannula hub member 10, hereinafter the catheter hub 10. The flexible catheter 20 is slidably disposed over the exterior of the hollow needle 16 and terminates short of the pointed end 18. The distal end 22 of the flexible catheter is also ground so that its outside diameter approaches the outside diameter of the needle 16. Preferably, the catheter 20 has an inside diameter which is approximately the same or very slightly larger than the outside diameter of the needle 16.
The needle can be manufactured from any standard surgical steel available in the art. The catheter can be manufactured from polypropylene, polytetrafluoroethylene or any other suitable flexible material which can be extruded into a cannula or catheter as shown. Of course, the catheter material must be surgically compatible and nontoxic. Many such materials are available in the art. The other components of the present invention, such as the catheter hub 10, the needle hub 12 and the handle means or syringe 14, can be manufactured from polypropylene, polyamides, polyesters or any other suitable thermoplastic material available to the art.
The syringe 14, as shown, has been partially broken away since in reality the syringe is usually about 3 or more inches long in comparison to the 2 inch or less combined length of the needle hub 12 and the catheter hub 10. Such syringes are readily available commodities from medical supply houses which deal in disposable medical equipment. The primary purpose of providing a handle or syringe 14 is to increase the grip of the fingers as they are wrapped around the needle hub 12 and the handle 14. Such a handle facilitates insertion of a catheter and needle and also aids in the removal of the needle from the catheter as will be explained hereinafter.
Referring now to FIGS. 2 through 5, a more detailed description of the catheter, catheter hub, needle and needle hub assembly will be provided. A side elevational view of the needle hub is provided. The needle hub 12 is provided first with a pair of side indentations 30 (also seen in FIG. 1) which facilitate grasping between a thumb and forefinger for initial insertion of the needle and catheter into subcutaneous tissue. Also provided on the top portion of the needle hub is an indicator 32, in this case a triangularly shaped raised portion, which points in the direction of the needle 16 and indicates when the beveled pointed end 18 is facing upwardly. The needle 16 is mounted in the distal end portion 34 of the needle hub by molding techniques well known in the art. The distal end portion 34 of the needle hub is generally circular in cross section. Rearward of the distal end portion 34, a portion 36 of circular cross section of greater diameter than the distal end portion 34 is provided. The enlarged portion 36 provides a shoulder 38, the function of which will be described specifically in conjunction with FIG. 5. In the particular embodiment illustrated, a channel 40 is provided in the interior of the needle hub 12 which communicates with a female luer socket 42.
The catheter hub 10, two views of which are shown in FIGS. 3 and 4, includes a body portion 50, a distal end 52 of generally circular cross section into which the catheter 20 is securely mounted. Again, techniques for mounting catheters in hubs such as catheter hub are well known in the art. The interior of the catheter communicates with an inwardly, forwardly tapering channel 54. The rear of tapering channel 54 communicates with channel portion 56 which opens onto the proximal end of the catheter hub 10. The channel portion 56 is generally of circular cross section and of slightly larger diameter than the distal end portion 34 of the needle hub. Channel portion 56 also forms a female luer socket. The channel portion 56 is then provided a pair of wings 62 which form a flat surface 64 on which the catheter hub 10 rests against a patients appendage or surface tissue. This feature prevents the catheter from turning in a person's vein and possibly twisting the vein and stopping flow therethrough. Provided in the winged members are apertures 66 through which tie down means such as an elastic band or other tie down band can be inserted to hold the device to a patients appendage. Provided at the rear or proximal end of the catheter hub 10 is a second rib member 68 which also in certain positions is provided to be digit engageable. As will be noted, the rib member 60 is spaced forward of the proximal end of the catheter hub. This spacing in conjunction with the spacing of the entire catheter hub assembly 10 from the needle hub 12 provides sufficient distance for thumb or thumb nail engagement of the rib 60 so that the needle 16 and needle hub 12 can be removed from the catheter 20 and catheter hub 10.
A better understanding of this operation will be gained by reference to FIGS. 6 and 7. The catheter and needle assembly are inserted into a patients appendage, for example, an arm 80 and into the patients vein 82, shown partially broken away. The catheter 20 and needle 16 are inserted as a unit by grasping the needle hub 12 with a thumb and forefinger while wrapping the remaining fingers around the needle hub and syringe 14. This operation is well known to the ordinary doctor or technician who has utilized this type of device. With reference to FIG. 7, the needle 16 is removed from the interior of the catheter hub 10 and catheter 20 after venipuncture has been accomplished. This, operation is effected by the doctor or technician by placing the thumb 84 or thumb nail 86 in a position to engage the rib 60 on the catheter hub 10. The needle hub 12 in conjunction with the syringe 14, around which the operators fingers 88 are wrapped, is then moved backwardly or rearwardly relative to the catheter hub 10 which is held in place by flexure of the operators thumb 84. This single hand operation leaves the technicians other hand free to apply pressure in the area of capable of receiving the distal end portion 34 of the needle hub. The respective dimensions of the channel portion 56 and distal portion 34 provides a slidably and rotatably disposed connection between the needle hub 12 and the catheter hub 10. Furthermore, the shoulder 38 abuts againstthe rear portion 58 of the catheter hub so that the catheter hub will only slide a fixed distance over the distal end 34 of the needle hub 12. The reason for this will be apparent later.
The catheter hub 10 is provided with a finger or digit engageable rib 60 which extends substantially radially the venipuncture in order to prevent blood flow through the catheter 20. Alternatively, the thumb or thumb nail 86 can engage therearward portion 58 or rib 68 of the catheter hub 10 to remove the needle hub 12 and the needle 16.
What is claimed is: v
1. A subcutaneous cannula insertion device comprisa stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter,
' a flexible cannula slidably disposed over said stylet, the distal end of said cannula terminating short of and tapering toward the distal end of said stylet,
a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over said distal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member,
said digit engageable means spaced forwardly of said proximal end of said cannula hub member,
the relative spacing and sizing of said tubular cannula hub member, said tubular stylet hub member, and said digit engageable means being such to permit a single hand to grasp the tubular stylet hub member and, while so grasping, for the thumb or other digit of said single hand to engage said digit engageable means to separate said cannula and said stylet by the action of said single hand,
said digit engageable means extending upwardly and circumferentially a sufficient distance to permit said digit to engage and remain in firm engagement during the separation of said cannula hub member and said stylet hub member, and during said separation to control the relative motion between said cannula and said stylet, said digit engageable means being oriented with respect to said cannula to lie at least along the upper circumferential surface when said device is in position to be introduced into a patient.
2. The cannula insertion device of claim 1 wherein said digit engageable means comprises a rib member extending outwardly from said cannula hub member and wherein said rib member extends substantially radially from said hub member at a substantially fixed distance from the axis of said cannula hub member and around at least a portion of the circumference thereof.
3. The cannula insertion device of claim 2, said rib member discontinuous about the circumference of said cannula hub member on one side of a line substantially tangential to the exterior surface of said cannula hub member, said line lying in a plane perpendicular to the axis of said cannula hub member.
4. The cannula insertion device of claim 3 wherein said cannula hub member has opposed sidewardly projecting wing members thereon, said wing members having means for attaching a tie down member thereto, said wings located substantially along said tangential line to provide in combination with said rib member a substantially flat surface capable of nonrotatably abutting surface tissue ofa patient.
5. The cannula insertion device of claim 1 wherein said cannula hub member is slidably and loosely rotatably disposed on said stylet hub member.
6. The cannula insertion device of claim 5 wherein said stylet comprises a hollow needle, said needle sharpened by a double grind facing in a predetermined direction, and wherein said cannula hub memberv has located thereon indicia means which indicates the direction in which said double grind on the distal end of said needle is facing.
7. A subcutaneous cannula insertion device comprising:
a stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter,
a flexible cannula slidably disposed over said stylet the distal end of said cannula terminating short of and tapering toward the distal end of said stylet,
a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over saiddistal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member,
said digit engageable means spaced forwardly of said proximal end of said cannula hub member,
said digit engageable means extending outwardly to present a raised surface normal to said relatively thin walled cannula hub member, said raised normal surface extending along the upper portion of said device when said device is oriented in the position for insertion into a patient but terminating circumferentially on the underside of said device to provide a region of reduced diametrical proportions opposite on said underside,
the relative spacing and sizing of said tubular cannula hub member, said tubular stylet hub member, and said digit engageable means being such to permit a single hand to grasp the tubular stylet hub member and, while so grasping, for the thumb or other digit of said single hand to engage said digit engageable means to separate said cannula and said stylet by the action of said single hand.
8. The cannula insertion device of claim 7 in which said digit engageable means comprisesa generally U- shaped shoulder means carried on said cannula hub member with the central portion of said U-shaped shoulder means being located along the upper portion of said device when said device is oriented in position for insertion into the patient.
Claims (8)
1. A subcutaneous cannula insertion device comprising: a stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter, a flexible cannula slidably disposed over said stylet, the distal end of said cannula terminating short of and tapering toward the distal end of said stylet, a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over said distal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member, said digit engageable means spaced forwardly of said proximal end of said cannula hub member, the relative spacing and sizing of said tubular cannula hub member, said tubular stylet hub member, and said digit engageable means being such to permit a single hand to grasp the tubular stylet hub member and, while so grasping, for the thumb or other digit of said single hand to engage said digit engageable means to separate said cannula and said stylet by the action of said single hand, said digit engageable means extending upwardly and circumferentially a sufficient distance to permit said digit to engage and remain in firm engagement during the separation of said cannula hub member and said stylet hub member, and during said separation to control the relative motion between said cannula and said stylet, said digit engageable means being oriented with respect to said cannula to lie at least along the upper circumferential surface when said device is in position to be introduced into a patient.
1. A subcutaneous cannula insertion device comprising: a stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter, a flexible cannula slidably disposed over said stylet, the distal end of said cannula terminating short of and tapering toward the distal end of said stylet, a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over said distal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member, said digit engageable means spaced forwardly of said proximal end of said cannula hub member, the relative spacing and sizing of said tubular cannula hub member, said tubular stylet hub member, and said digit engageable means being such to permit a single hand to grasp the tubular stylet hub member and, while so grasping, for the thumb or other digit of said single hand to engage said digit engageable means to separate said cannula and said stylet by the action of said single hand, said digit engageable means extending upwardly and circumferentially a sufficient distance to permit said digit to engage and remain in firm engagement during the separation of said cannula hub member and said stylet hub member, and during said separation to control the relative motion between said cannula and said stylet, said digit engageable means being oriented with respect to said cannula to lie at least along the upper circumferential surface when said device is in position to be introduced into a patient.
2. The cannula insertion device of claim 1 wherein said digit engageable means comprises a rib member extending outwardly from said cannula hub member and wherein said rib member extends substantially radially from said hub member at a substantially fixed distance from the axis of said cannula hub member and around at least a portion of the circumference thereof.
3. The cannula insertion device of claim 2, said rib member discontinuous about the circumference of said cannula hub member on one side of a line substantially tangential to the exterior surface of said cannula hub member, said line lying in a plane perpendicular to the axis of said cannula hub member.
4. The cannula insertion device of claim 3 wherein said cannula hub member has opposed sidewardly projecting wing members thereon, said wing members having means for attaching a tie down member thereto, said wings located substantially along said tangential line to provide in combination with said rib member a substantially flat surface capable of nonrotatably abutting surface tissue of a patient.
5. The cannula insertion device of claim 1 wherein said cannula hub member is slidably and loosely rotatably disposed on said stylet hub member.
6. The cannula insertion device of claim 5 wherein said stylet comprises a hollow needle, said needle sharpened by a double grind facing in a predetermined direction, and wherein said cannula hub member has located thereon indicia means which indicates the direction in which said double grind on the distal end of said needle is facing.
7. A subcutaneous cannula insertion device comprising: a stylet, the distal end thereof being sharpened, the proximal end thereof being mounted in a relatively thin walled tubular stylet hub member having a distal receiving end of reduced diameter, a flexible cannula slidably disposed over said stylet the distal end of said cannula terminating short of and tapering toward the distal end of said stylet, a relatively thin walled tubular cannula hub member in which the proximal end of said cannula is mounted, said cannula hub member loosely and removably disposed over said distal receiving end of said stylet hub member, said cannula hub member having a digit engageable means extending outwardly therefrom to facilitate removal of said cannula hub member from said stylet hub member, said digit engageable means spaced forwardly of said proximal end of said cannula hub member, said digit engageable means extending outwardly to present a raised surface normal to said relatively thin walled cannula hub member, said raised normal surface extending along the upper portion of said device when said device is oriented in the position for insertion into a patient but terminating circumferentially on the underside of said device to provide a region of reduced diametrical proportions opposite on said underside, the relative spacing and sizing of said tubular cannula hub member, said tubular stylet hub member, and said digit engageable means being such to permit a single hand to grasp the tubular stylet hub member and, while so grasping, for the thumb or other digit of said single hand to engage said digit engageable means to separate said cannula and said stylet by the action of said single hand.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9911170A | 1970-12-17 | 1970-12-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3714945A true US3714945A (en) | 1973-02-06 |
Family
ID=22272797
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00099111A Expired - Lifetime US3714945A (en) | 1970-12-17 | 1970-12-17 | Digit manipulable quick release cannula insertion device |
Country Status (2)
Country | Link |
---|---|
US (1) | US3714945A (en) |
FR (1) | FR2118743A5 (en) |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5082884A (en) * | 1973-08-16 | 1975-07-04 | ||
US4046144A (en) * | 1975-09-18 | 1977-09-06 | Mcfarlane Richard H | Catheter placement assembly |
US4108175A (en) * | 1977-01-28 | 1978-08-22 | Orton Dale W | Catheter insertion apparatus |
US4191186A (en) * | 1977-12-12 | 1980-03-04 | Abbott Laboratories | Removable digit engageable means for separating a catheter and stylet |
US4292970A (en) * | 1980-01-24 | 1981-10-06 | Hession Jr William M | Apparatus for intravenous catheter starter |
US4311139A (en) * | 1980-03-28 | 1982-01-19 | Quest Medical, Inc. | Method and apparatus for catheter insertion |
US4353369A (en) * | 1980-01-17 | 1982-10-12 | Abbott Laboratories | Venipuncture device |
US4362156A (en) * | 1979-04-18 | 1982-12-07 | Riverain Corporation | Intravenous infusion assembly |
US4365630A (en) * | 1981-03-10 | 1982-12-28 | Mcfarlane Richard H | Flashback chamber for catheter |
DE3236399A1 (en) * | 1981-10-30 | 1983-05-19 | Fuji Terumo Co., Ltd., Fujinomiya, Shizuoka | CATHETER CONNECTOR |
US4444203A (en) * | 1982-03-26 | 1984-04-24 | Lab-A-Cath, Inc. | Intravenous catheter placing and specimen gathering device |
US4445893A (en) * | 1982-05-13 | 1984-05-01 | Sherwood Medical Company | Infusion apparatus |
US4488545A (en) * | 1982-12-10 | 1984-12-18 | Sherwood Medical Company | Catheter placement device |
US4493707A (en) * | 1983-02-10 | 1985-01-15 | Japan Medical Supply Co. Ltd. | Tubage used for intubation |
US4569675A (en) * | 1983-09-12 | 1986-02-11 | Infusaid Corporation | Transcutaneous infusion system |
US4713057A (en) * | 1984-02-27 | 1987-12-15 | Medical College Of Ohio | Mechanical assist device for inserting catheters |
US4772264A (en) * | 1986-06-23 | 1988-09-20 | Regents Of The University Of Minnesota | Catheter introduction set |
US4893620A (en) * | 1985-03-27 | 1990-01-16 | Wadwha Rajindar K | Multipurpose nasal airway |
US4973313A (en) * | 1989-09-13 | 1990-11-27 | Sherwood Medical Company | Over the needle catheter introducer |
WO1991015153A1 (en) * | 1990-03-30 | 1991-10-17 | Norsk Hydro A.S | Device for continuous blood sampling |
US5186712A (en) * | 1991-08-23 | 1993-02-16 | Kansas Creative Devices, Inc. | Intravenous catheter launching device |
US5192275A (en) * | 1991-09-18 | 1993-03-09 | Becton, Dickinson And Company | IV infusion or blood collection guard assembly |
US5279572A (en) * | 1991-12-03 | 1994-01-18 | Yasuo Hokama | Indwelling intravenous needle with two blood-backflow passage routes |
WO1996002294A1 (en) * | 1994-07-18 | 1996-02-01 | Chin Rong Hwang | Device for catheterism |
US5607405A (en) * | 1992-05-19 | 1997-03-04 | Decker; Rand A. | Surgical insertion device and method |
US5681288A (en) * | 1994-06-27 | 1997-10-28 | Schlitt; Michael James | Indwelling catheter |
US5713868A (en) * | 1997-03-05 | 1998-02-03 | Fussman; Arie | Catheterization device with dilator |
US5749857A (en) * | 1996-04-25 | 1998-05-12 | Cuppy; Michael J. | Catheter system |
US5755709A (en) * | 1996-04-25 | 1998-05-26 | Cuppy; Michael J. | Catheter system for percutaneously introducing a liquid |
US20040181192A1 (en) * | 2003-03-11 | 2004-09-16 | Cuppy Michael John | Vascular access device and method of using same |
US7156836B2 (en) * | 2000-04-28 | 2007-01-02 | Richard Keng Siang Teo | Cannula assembly |
US20090209853A1 (en) * | 2008-02-19 | 2009-08-20 | Parihar Shailendra K | Biopsy site marker applier |
US20110040252A1 (en) * | 2007-10-16 | 2011-02-17 | Peter Gravesen | Cannula Insertion Device and Related Methods |
US20110071391A1 (en) * | 2009-09-24 | 2011-03-24 | Speeg Trevor W V | Biopsy marker delivery device with positioning component |
US20180161546A1 (en) * | 2016-12-12 | 2018-06-14 | National Guard Health Affairs | Intravenous catheter stopper |
WO2020079672A1 (en) * | 2018-10-16 | 2020-04-23 | Koglo Ltd. | System and method for substance delivery |
US10682158B2 (en) | 2016-01-22 | 2020-06-16 | Lsi Solutions, Inc. | Cannulation device and methods thereof |
Families Citing this family (1)
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US11103681B2 (en) | 2014-10-16 | 2021-08-31 | B. Braun Melsungen Ag | Caps for needles and catheters |
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US3406685A (en) * | 1963-07-23 | 1968-10-22 | Becton Dickinson Co | Catheter needle and method for its manufacture |
US3352306A (en) * | 1963-12-23 | 1967-11-14 | Hrisch Sidney | Intravenous catheter assembly |
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Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5082884A (en) * | 1973-08-16 | 1975-07-04 | ||
US4046144A (en) * | 1975-09-18 | 1977-09-06 | Mcfarlane Richard H | Catheter placement assembly |
US4108175A (en) * | 1977-01-28 | 1978-08-22 | Orton Dale W | Catheter insertion apparatus |
US4191186A (en) * | 1977-12-12 | 1980-03-04 | Abbott Laboratories | Removable digit engageable means for separating a catheter and stylet |
US4362156A (en) * | 1979-04-18 | 1982-12-07 | Riverain Corporation | Intravenous infusion assembly |
US4353369A (en) * | 1980-01-17 | 1982-10-12 | Abbott Laboratories | Venipuncture device |
US4292970A (en) * | 1980-01-24 | 1981-10-06 | Hession Jr William M | Apparatus for intravenous catheter starter |
US4311139A (en) * | 1980-03-28 | 1982-01-19 | Quest Medical, Inc. | Method and apparatus for catheter insertion |
US4365630A (en) * | 1981-03-10 | 1982-12-28 | Mcfarlane Richard H | Flashback chamber for catheter |
DE3236399A1 (en) * | 1981-10-30 | 1983-05-19 | Fuji Terumo Co., Ltd., Fujinomiya, Shizuoka | CATHETER CONNECTOR |
US4444203A (en) * | 1982-03-26 | 1984-04-24 | Lab-A-Cath, Inc. | Intravenous catheter placing and specimen gathering device |
US4445893A (en) * | 1982-05-13 | 1984-05-01 | Sherwood Medical Company | Infusion apparatus |
US4488545A (en) * | 1982-12-10 | 1984-12-18 | Sherwood Medical Company | Catheter placement device |
US4493707A (en) * | 1983-02-10 | 1985-01-15 | Japan Medical Supply Co. Ltd. | Tubage used for intubation |
US4569675A (en) * | 1983-09-12 | 1986-02-11 | Infusaid Corporation | Transcutaneous infusion system |
US4713057A (en) * | 1984-02-27 | 1987-12-15 | Medical College Of Ohio | Mechanical assist device for inserting catheters |
US4893620A (en) * | 1985-03-27 | 1990-01-16 | Wadwha Rajindar K | Multipurpose nasal airway |
US4772264A (en) * | 1986-06-23 | 1988-09-20 | Regents Of The University Of Minnesota | Catheter introduction set |
US4973313A (en) * | 1989-09-13 | 1990-11-27 | Sherwood Medical Company | Over the needle catheter introducer |
WO1991015153A1 (en) * | 1990-03-30 | 1991-10-17 | Norsk Hydro A.S | Device for continuous blood sampling |
US5186712A (en) * | 1991-08-23 | 1993-02-16 | Kansas Creative Devices, Inc. | Intravenous catheter launching device |
US5192275A (en) * | 1991-09-18 | 1993-03-09 | Becton, Dickinson And Company | IV infusion or blood collection guard assembly |
US5279572A (en) * | 1991-12-03 | 1994-01-18 | Yasuo Hokama | Indwelling intravenous needle with two blood-backflow passage routes |
US5607405A (en) * | 1992-05-19 | 1997-03-04 | Decker; Rand A. | Surgical insertion device and method |
US5681288A (en) * | 1994-06-27 | 1997-10-28 | Schlitt; Michael James | Indwelling catheter |
WO1996002294A1 (en) * | 1994-07-18 | 1996-02-01 | Chin Rong Hwang | Device for catheterism |
US5749857A (en) * | 1996-04-25 | 1998-05-12 | Cuppy; Michael J. | Catheter system |
US5755709A (en) * | 1996-04-25 | 1998-05-26 | Cuppy; Michael J. | Catheter system for percutaneously introducing a liquid |
US5713868A (en) * | 1997-03-05 | 1998-02-03 | Fussman; Arie | Catheterization device with dilator |
US7156836B2 (en) * | 2000-04-28 | 2007-01-02 | Richard Keng Siang Teo | Cannula assembly |
US20040181192A1 (en) * | 2003-03-11 | 2004-09-16 | Cuppy Michael John | Vascular access device and method of using same |
US20110040252A1 (en) * | 2007-10-16 | 2011-02-17 | Peter Gravesen | Cannula Insertion Device and Related Methods |
US9005169B2 (en) | 2007-10-16 | 2015-04-14 | Cequr Sa | Cannula insertion device and related methods |
US9968747B2 (en) | 2007-10-16 | 2018-05-15 | Cequr Sa | Cannula insertion device and related methods |
US20090209853A1 (en) * | 2008-02-19 | 2009-08-20 | Parihar Shailendra K | Biopsy site marker applier |
US20090209854A1 (en) * | 2008-02-19 | 2009-08-20 | Parihar Shailendra K | Biopsy method |
US20110071391A1 (en) * | 2009-09-24 | 2011-03-24 | Speeg Trevor W V | Biopsy marker delivery device with positioning component |
US10682158B2 (en) | 2016-01-22 | 2020-06-16 | Lsi Solutions, Inc. | Cannulation device and methods thereof |
US20180161546A1 (en) * | 2016-12-12 | 2018-06-14 | National Guard Health Affairs | Intravenous catheter stopper |
WO2020079672A1 (en) * | 2018-10-16 | 2020-04-23 | Koglo Ltd. | System and method for substance delivery |
Also Published As
Publication number | Publication date |
---|---|
FR2118743A5 (en) | 1972-07-28 |
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