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
  • A61M25/02—Holding devices, e.g. on the body
• • 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
  • A61M25/02—Holding devices, e.g. on the body
  • A61M2025/024—Holding devices, e.g. on the body having a clip or clamp system
• • 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
  • A61M25/02—Holding devices, e.g. on the body
  • A61M2025/0246—Holding devices, e.g. on the body fixed on the skin having a cover for covering the holding means
• • 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
  • A61M25/02—Holding devices, e.g. on the body
  • A61M2025/0266—Holding devices, e.g. on the body using pads, patches, tapes or the like

Definitions

• This invention relates to fittings for use in intravenous infusion procedures for securing an intravenous cathether in a stabilized manner to a patient's skin.
• a venipuncture can be made in many areas of the body, such as the forearm, back of the hand, upper arm, ankle or foot.
• a catheter is normally inserted into a vein by means of a hollow needle which is then withdrawn to avoid damage to the walls of the punctured vein.
• the catheter remains attached to the patient and is connected to a source of infusion liquid. It is then necessary to stabilize the catheter to prevent movement tending to work the catheter loose and leading to potential source of infection or irritation. to the patient at the point of catheter insertion.
• This stabilization is generally done by taping the catheter hub and associated tube fittings to the patient's skin in an area adjacent to the point of catheter insertion.
• Another object of the invention is to provide a catheter securing an stabilizing fitting which allows the catheter to be held securely in place while still facilit ting access to the point of the catheter insertion into the skin and visual access to the point of blood flashback in the infusion tubing.
• a further object of the invention is to provide a fitting for cradling and securely holding a catheter in place on a patient's skin with the catheter hub being held out of contact with the skin and at a suitable angle to avoid crimping or bending of the catheter itself.
• a disposable catheter stabilizing fitting of synthetic plastics material which comprises a catheter hub-retaining cradle on a laminar base member having an adhesive undersurface and a tab grip extending rearwardly of the cradle.
• the hub is pressed with a snap-fit into the cradle and the fitting with attached hub and tubing is dabbed onto the patient's skin (after removal of a protective covering for the adhesive on the fitting's undersurface). Then, the fitting can be securely stabilized in position by overlaying it with criss-cross adhesive tapes.
• the cradle is designed to hold the catheter hub at a suitable angle to avoid bending or crimping of the catheter and with the catheter itself projecting forwardlyfrom the front end of the fitting. This facilitates access to the point of catheter insertion into the skin so that a gauze pad or the like can be attached over this point and removed if required for inspection purposes without disturbing the secure attachment of the fitting. Further, the cradle and base member are designed to provide visual access to. the point of blood flashback rearwardly of the catheter, hub even when the fitting is secured by the criss-cross tapes.
• the base member is provided with laterally extending rearwardly inclined elongated wings positioned to serve as guides over which the criss-cross tapes are laid and the fitting may be supplied with such tapes having their ends preattached to these wings.
• Figure 1 is a perspective view of an intravenous infusion site in a patient's forearm showing the use of a stabilizing fitting in accordance with the invention
• Figures 2 and 3 are perspective views of a conventional form of over the needle catheter set in retracted and assembled conditions respectively;
• Figure 4 is a perspective view of one form of stabilizing fitting in accordance with the invention showing a catheter hub and associated infusion tube fitting about to be attached thereto;
• Figure 5 is a plan view of the fitting shown in
• Figure 6 is an underneath view of the same fitting;
• Figure 7 is a secion on line 7-7 of Figure 5;
• Figure 8 is a plan view of an infusion site showing the use of a modified form of fitting in accordance with the invention;
• Figure 9 is a perspective view of an alternative type of stabilizing fitting and catheter
• Figure 10 is a plan view of another form of stabilizing fitting;
• Figure 11 is a perspective view of part of a still further form of stabilizing fitting;
• Figure 12 is a plan view of the fitting shown in Figure 11 with a catheter hub and associated infusion tubing in place;
• Figure 13 is an underneath view of the fitting shown in Figures 11 and 12;
• Figure 14 is a section on line 3-3 of Figure 12;
• Figure 15 is a similar view to that shown in Figure 14 but with the catheter hub shown in a different position on the fitting;
• Figure 16 is a perspective view of part of anoth form of stabilizing fitting
• Figure 17 is a view similar to Figure 16 showing a catheter hub in place
• Figure 18 is a perspective view of yet another form of stabilizing fitting
• Figure 19 is an underneath plan of the fitting shown in Figure 18; and Figure 20 is a longitudinal section through the fitting shown in Figure 18 in a bent condition.
• a first preferred form of catheter stabilizing fitting comprises a laminar base member 10 of synthetic plastics material such as PVC, polyethylene or the like and a catheter hubretaining cradle 12 of like or similar material on the upper surface of the base member.
• the cradle and base member may be separately formed as by molding or stamping and adhesively assembled together or alternatively the entire fitting may be integrally formed as a single molded item.
• the base member is symmetrical about a longitudinal axis 14, has a forward end 16 and laterally extending rearwardly inclined elongated wings 18 with an included angle therebetween of about 120°.
• a tab grip 20 is provided as a rearward extension of the base member and the entire undersurface of the base member, except for the tab grip, is provided with a coating of any suitable pressure-sensitive adhesive 22 ( Figure 6) and a protective strippable covering sheet 24.
• the cradle 12 has side walls 26 of resilient plastics, which converge upwardly towards their free upper edges, and which are provided internally with longitudinal ridges 28.
• Each side wall has a central opening 30 and rearwardly of the side walls the cradle is extended into a section including elongated reudced height extensions 32 of the side walls.
• the cradle is dimensioned to accept a standard catheter hub 36 and associated infusion tube fittings 38 as shown in Figures 1 and 4 by press fitting the hub into the cradle between the side walls. In this condition, the resiliency of the side walls and their internal ribs firmly locate the hub in position and positive longitudinal location of the hub is obtained by the hub boss fitting in the wall openings 30.
• the stabilizing fitting is conveniently supplied in a kit including for example an over the needle catheter, antiseptic liquid and applicator, adhesive tapes, and gauze padding.
• a preferred method of using the fitting in an intravenous infusion procedure is illustrated in Figures 1-4. A venipuncture is made in the normal way and the needle 40 is withdrawn from the catheter. After checking the blood flashback, the catheter hub 36 is then the stabilizing fitting 10, held by means of tab 20, is brought from below the hub and the hub is snapped into the cradle 12.
• the fitting is dabbed onto the patient's skin to temporarily stabilize the catheter and after forming a conventional bight in the infusion tubing as shown in Figure 1, the fitting is taped down with criss-cross adhesive tapes 42 passing over the wings 18 which serve as alignment guides for the tapes.
• a conventional gauze pad and covering tape 44 is placed over the point of insertion of the catheter into the patient's skin.
• the enlarged diameter portion 34 of the forward fitting of the infusion tubing sits on the reduced height side wall extensions 32. This establishes a suitable angle for the catheter after taping down, to prevent crimping or kinking of the catheter.
• the stabilizing fitting in the described manner, a simple means is provide for securely stabilizing the catheter according to a standardized procedure in a rapid and effective manner. Moreover, with the catheter projecting from the front end of the stabilizing fitting ready access is available to the point of catheter insertion, for inspection purposes, by removing the gauze pad without disturbing the stabilization of the catheter. Further, the point of blood flashback in the tubing behind the catheter hub is at all times visible due to the positioning of the criss-cross tapes over the wings 18 which are designed to cross the tapes over the hub boss as shown (to this end the center lines of the respective wings pass substantially through the centers of the openings 30).
• Figures 8-10 show modified forms of fittings in accordance with the invention.
• the fittings shown in Figure 8 are substantially similar to that previously described except that it is supplied with adhesive tapes 42a provided with suitable release paper and having the ends pre-attached to the upper surfaces of the wings 18.
• Figure 9 shows a fitting in which the openings 30a in the side walls are wider than in the previous embodiments to receive and longitudinally locate a catheter hub having lateral wings50.
• Figure 10 shows a fitting in which the wings 12 are omitted. It will be appreciated that the fittings shown in Figures 8-10 are in their essential features equivalent to the fittings shown in the previous figures and their manner of use is essentially similar.
• FIGS 11-15 show a further form of fitting having a modified type of cradle.
• this fitting is similar to those shown in Figures 1-9 -and like references are used to denote these similar parts.
• the cradle 12 in this case has side walls 2 ⁇ and a trough-like cradle section 58 rearwardly of walls 26 formed with three longitudinally spaced part-circular abutment ribs 60. At its rear, the cradle terminates in a lateral wall 62 having a part-circular opening 64.
• the fitting is used in the same way as those previously described and in use, as shown in Figures 12, 14 and 15, when the forward end of a catheter hub 36 is pressed into place between the side walls, the boss 36a of the hub will be longitudinally located by resting between the rear end of the walls 26 and the forwardmost rib 60 or by resting between a pair of the ribs 60 and with the forward end of the infusion fitting 34 resting in the opening 64 in rear wall 62 of the cradle. Longitudinal and transverse location of the catheter hub is therefore provided by the walls 26, the ribs 60 and the opening 64, and the heighth of the rear wall 62 beneath the opening 64. establishes the correct catheter angle to prevent kinking or crimping.
• the construction is such that the catheter boss 36a can be located between walls 26 and the forwardmost rib 60 or between adjacent pairs of ribs to longitudinally maintain the hub in position.
• FIG. 16 and 17 The fitting shown in Figures 16 and 17 is similar to that shown in Figures 11-15 and like references are again used to denote like parts.
• the side walls 26 are extended somewhat rearwardly compared with the embodiment of Figures 11-15 and the forwardmost rib 60 is eliminated.
• One of the walls 26 carries a snap-over strap or cover 66 with a thumb grip 68, the cover 66 being integrally molded with the wall 26 about a hinge line 70 of reduced cross section.
• Cover 66 terminates in a latch member 72 which engages a complementary latch member 74 at the top of the opposite wall 26.
• the snap-over cover allows this form of fitting to dispense with the use of criss-cross tapes, and when required, the latch members 72 and 74 can be released and the cover opened by inward pressure on walls 26.
• Figures 18-20 show a fitting which is again similar to that shown in Figures 11-15.
• the fitting is provided with means for reducing the bending resistance of the fitting along a line substantially transverse to the longitudinal axis of the fitting.
• Such means take the form of substantially V-shaped notches 80 in the walls of the cradle-like trough section 58 between a pair of the ribs 60. These notches facilitate bending or folding of the fitting as shown in Figure 20 which assists in manipulating the fitting when this is being applied to a patient's skin.
• the release paper on the underneath surface of the fitting is in this case provided in two halves 24a and 24b which meet on the bending axis so that when the fitting is bent as shown, this also facilitates removal of the release paper.
• Any of the other fittings herein disclosed can also be provided with similar bending resistance reducing means and split release paper.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biophysics (AREA)
• Pulmonology (AREA)
• Engineering & Computer Science (AREA)
• Anesthesiology (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Hematology (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Infusion, Injection, And Reservoir Apparatuses (AREA)
• Media Introduction/Drainage Providing Device (AREA)

Priority Applications (2)

Applications Claiming Priority (3)

Publications (1)

Family

ID=26673823

Family Applications (1)

Country Status (3)

Cited By (35)

Families Citing this family (3)

Citations (9)

Family Cites Families (1)

• 1980
  • 1980-01-18 JP JP50045280A patent/JPS55501090A/ja active Pending
  • 1980-01-18 WO PCT/US1980/000109 patent/WO1980001458A1/en not_active Application Discontinuation
  • 1980-07-29 EP EP19800900323 patent/EP0022846A4/en not_active Withdrawn

Patent Citations (9)

Non-Patent Citations (1)

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