Catheterization system

• US 4,711,636 A
• Filed: 11/08/1985
• Issued: 12/08/1987
• Est. Priority Date: 11/08/1985
• Status: Expired due to Term

• Current Assignee: Venetec International Incorporated (Becton, Dickinson & Co)
• Original Assignee: Steven F. Bierman
• Inventors: Bierman, Steven F.
• Primary Examiner(s): Pellegrino, Stephen C.
• Application Number:
  US06/796,301
• Time in Patent Office: 760 Days
• Field of Search: 604/180, 604/174, 604/164, 604/165, 604/177, 604/178, 604/179, 604/280, 604/283, 128/DIG. 26
• US Class Current: 604/180
• CPC Class Codes: A61M 2025/024 having a clip or clamp system
• CPC Class Codes: A61M 2039/1077 Adapters, e.g. couplings adapting a connector to one or several other connectors
• CPC Class Codes: A61M 25/02 Holding devices, e.g. on the body
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: Y10S 128/26 Cannula supporters

Abstract

A catheterization system is comprised of an anchoring pad permitting one-time attachment to a patient, a catheter, and a tubing adaptor. The catheter is mounted on the anchoring pad in order to prevent lateral or longitudinal movement with respect to the patient, thereby preventing injury. The tubing adaptor is connected to the catheter so as to absorb rotational forces applied to the adaptor by incidental movement in the IV tubing. The adaptor/catheter engagement is rendered secure against longitudinal removal forces by means of a spring-actuated latch extending distally from the adaptor and interengageable with a reduced diameter neck portion on the catheter. The anchoring pad is also provided with means for receiving the safety loop in the IV tubing. A method associated with this catheterization system is also disclosed.

Claims

1. A catheterization system adapted for insertion into the arm, hand, or other location in the body of a patient for delivering fluids through a conduit to said patient, comprising:

a cannula for insertion into said patient at a particular location, said cannular passing said fluids into said patient, the proximal end of said cannula having means for receiving said conduit;

means for adapting said conduit for engagement with said receiving means on said cannula, said adapting means being rotatable with respect to said receiving means to relieve rotational forces in said conduit, said adapting means insulting said cannula from rotational movement of said conduit in order to avoid injury or discomfort to said patient; and

means for mounting said cannula on said patient, said mounting means comprising snap-fit engagement means with said cannula for removably anchoring said cannula on said patient, said removable snap-fit engagement obviating the necessity for the time-consuming application of surgical tape or other apparatus,

said adapting means being solely engageable and disengageable with said receiving means on said cannula in order to facilitate the frequent replacement of said conduit without requiring the removing of said cannula from said mounting means.

2. The catheterization system of claim 1, wherein said engagement means comprises means for substantially preventing longitudinal and lateral movement of said cannula with respect to said mounting means.

3. The catheterization of claim 1, wherein said mounting means comprises means for receiving a safety loop formed in said conduit to prevent movement in said conduit from passing directly to said adapting means.

4. The catheterization system of claim 1, wherein said mounting means further comprises self-adhesive means for attaching said mounting means to the body of said patient in a position adjacent the insertion location of said cannula.

5. The catheterization system of claim 1, wherein said mounting means further comprises means for permitting the visual inspection of said insertion location, and further permitting the application of antibiotic ointment to said location.

6. The catheterization system of claim 1, wherein said adapting means further comprises means for releasably maintaining said engagement of said cannula with said conduit, said maintaining means also insulating said cannula from rotational movement in said conduit.

7. The catheterization system of claim 6, wherein said maintaining means comprises an articulating latch for movement either (i) to a first position to permit engagement of said adapting means with said cannula or (ii) to a second position to permit removal of said adapting means from said cannula in order to permit the replacement of said conduit.

8. The catheterization system of claim 7, wherein said latch comprises a lever and a fulcrum, said lever being movable to said first position by means of manual pressure and being biased to automatically return to said second position.

9. The catheterization system of claim 8, wherein said lever of said latch is biased to said second position by means of the resiliency of said latch.

10. The catheterization system of claim 8, wherein said lever is provided with means for automatically activating said latch to said first position during engagement of said activating means on said latch with said cannula.

11. The catheterization system of claim 10 wherein said activating means comprises a tapered leading edge on said lever which urges said latch into said first position upon engagement of said leading edge with said cannula in order to provide said automatic activation of said latch.

12. The catheterization system of claim 7, wherein said latch is mounted at two locations on said adapting means.

13. The catheterization system of claim 1, wherein said cannula is provided with means for receiving manual pressure for guiding said cannula into position within said patient.

14. A catheterization system adapted for insertion into the arm, hand, or other location in the body of a patient for delivering fluids through a conduit to said patient, comprising:

a cannula for insertion into said patient at a particular location, said cannula passing fluids into said patient;

means for adapting said conduit for removable engagement with said cannula to permit frequent replacement of said conduit without removal of said cannula from said patient, said adapting means comprising means for rotationably engaging said cannula such that rotational forces on said conduit and said adapting means are not transmitted to said cannula in order to avoid pain and injury to said patient; and

means for maintaining said removable rotatable engagement between said cannula and said adapting means, said maintaining means being selectively movable to a first positiom to permit said rotatable engagement between said adapting means and said cannula, and said maintaining means being automatically biased to a second postion to prevent removal of said adapting means from cannula,

said adapting means being solely engageable and disengageable with said cannula to facilitate the frequent replacement of said conduit without requiring the removal of said cannula from said patient.

15. A catheterization system adapted for insertion into the arm, hand, or other location in the body of a patient for delivering fluids through a conduit to said patient, comprising:

a cannula for insertion into said patient at a particular location, said cannula passing fluids into said patient, said cannula having a proximal cuff and neck of reduced diameter located distally with respect to said cuff;

means for adapting said conduit for engagement with said cannula, said adapting means comprising a conical member for removable frictional engagement within said cuff of said cannula;

means for retaining said removable frictional engagement between said conical member and said cuff, said retaining means comprising a lever removably engageable with said neck to prevent longitudinal forces on said adapting means from removing said frictional engagement, said retaining means being rotatable with respect to said neck so that rotational forces are not transmitted to said cannula in order to avoid pain and injury to said patient; and

means for mounting said cannula on said patient, said adapting means being solely engageable and disengageable with said cannula but not engageable with said mounting means to facilitate the frequent replacement of said conduit without requiring the removal of said cannula from said mounting means,

said cannula being rotatable with respect to said mounting means about an axis transverse to the longitudinal dimension of said cannula to facilitate the frequent detachment and replacement of said conduit.

16. The catheterization system of claim 15 further comprising:

means for anchoring said catheterization system to said patient, said anchoring means comprising a self-adhesive backing to facilitate attachment to said patient, said anhoring means further comprising a pedestal; and

means on said cannula for removable snap-fit engagement with said pedestal of said anchoring means, said cannula further comprising means for applying gentle manual pressure in a substantially transverse direction to said cannula in order to mount said cannula on said pedestal while avoiding pain and injury to said patient.

17. A method for catheterizing a patient comprising the steps of:

a. Cannulating a blood vessel of a patient by means of a needle;

b. Passing the cannula of catheter over said needle and into position within said blood vessel of said patient;

c. Removing said needle from said patient;

d. Manually acitvating a spring loaded retention latch mounted on a catheter tubing adapter to permit the frictional engagement of said catheter tubing adpater with said catheter, said frictional engagement being rotationally non-sensitive such that rotational forces applied to said tubing and said adapter are not transmitted to said catheter thereby avoiding discomfort and possible injury to said patient;

e. Releasing said retention latch for removable engagement with a portion of said catheter to maintain the frictional engagement between said adapter and said catheter;

f. Removably snap-fitting said catheter/adapter combination to an anchoring pad; and

g. Mounting said anchoring paid to said patient by means of self-adhesive backing.

18. The method of claim 17 further comprising the step of placing the pad on the patient such that a cut-out portion on said pad is adjacent the point of insertion of said cannula.

19. An adapter for detachably mounting a conduit top a catheter for delivering fluids through said conduit and said catheter into the body of a patient, said catheter having a proximal cuff and an adjacent nec, comprising:

an adapter body having proximal end attached to said conduit and a distal end for engagement with said catheter; and

a latch mounted on said adapter body for rotational engagement with said neck of said catheter so that longitudinal engagement between said catheter and said adapter is maintained but rotational forces experienced by said adapter are not transmitted to said catheter,

said longitudinal engagement being maintained by means of the engagement between said latch and said cuff, and said adapter being solely engageable and disengageable with said catheter to facilitate the frequent replacement of said conduit without requiring the removal of said catheter from said patient.

20. A catheterization system adapted for insertion into the arm, hand, or other location in the body of a patient for delivering fluids through a conduit to said patient, comprising:

a cannula for insertion into said patient at a particular location, said cannula passing fluids into said patient, the distal end of said cannula being inserted into said patient;

means on the proximal end of said cannula for rotatatably receiving said conduit, said receiving means comprising a neck and a cuff proximally located with respect to said neck and having a larger diameter than that of said neck, said neck and said cuff locating said cannula with respect to said conduit while preventing rotational forces experienced by said conduit from being transmitted to said cannula to prevent pain and injury to said patient;

means on said proximal end of said cannula for mounting said cannula on said patient, said mounting means comprising a pair of lateral arms extending away from said cannula in a transverse direction to the longitudinal dimension of said cannula; and

an anchoring pad having self-adhesive backing for attachment of said pad to said patient, said pad comprising a bridge for mounting said cannula on said patient, said bridge receiving said lateral arms of said cannula, said cannula being rotatable in said bridge about the axis through said lateral arms to facilitate the frequent replacement of said conduit without removal of said cannula form said patient.