CATHETER ASSEMBLY FOR PERITONEAL CAVITY INSERTION

• US 3,698,396 A
• Filed: 12/04/1970
• Issued: 10/17/1972
• Est. Priority Date: 12/04/1970
• Status: Expired due to Term

• Current Assignee: Dean R. Katerndahl, Earl D. Wilson, Fidel V. Macalalad, Gene C. Ring
• Original Assignee: Dean R. Katerndahl, Earl D. Wilson, Fidel V. Macalalad, Gene C. Ring
• Inventors: Katerndahl, Dean R., Wilson, Earl D., Macalalad, Fidel V., Ring, Gene C.
• Primary Examiner(s): Truluck, Dalton L.
• Application Number:
  US05/095,012
• Time in Patent Office: 683 Days
• Field of Search: 128/213,214.4,215,221,303,347,348,349R,35R,351,361,356
• US Class Current: 604/164.01
• CPC Class Codes: A61M 25/06 Body-piercing guide needles or the like

Abstract

A catheter assembly for peritoneal insertion, including an elongated stylet, an elongated catheter slidably disposed around the stylet and a gripping member secured to a proximal end of the stylet and having a handle grip extending transversely therefrom adjacent a shank of the stylet such that the handle grip may be grasped in the palm of one hand with the fingers grasping the catheter adjacent a distal end thereof whereby the catheter assembly may be firmly held and guided with one hand during peritoneal cavity insertion. Various embodiments of the catheter assembly include an elongated barrel surrounding the catheter having a closed end anchored to the proximal end of the stylet, a stylet which is bent upon itself to form the gripping member, and a gripping member disposed parallel to the shank of the stylet and having an upper end bent upon itself and secured to the proximal end of the stylet.

Claims

1. A catheter assembly for peritoneal cavity insertion comprising an elongated stylet having a pointed distal end, a proximal end and a shank extending therebetween;

an elongated catheter slidably disposed around said shank of said stylet; and

gripping means for holding said stylet, said gripping means including support means secured to said proximal end of said stylet and handle means of a size to be grasped by a hand, said handle means extending transversely from said support means and disposed adjacent said shank of said stylet intermediate and spaced from said proximal and distal ends whereby said handle means may be grasped in the palm of one hand with the fingers of the hand grasping said stylet such that said catheter assembly may be firmly held in one hand to provide guidance and pressure during peritoneal cavity insertion.

2. The invention as recited in claim 1 wherein said support means includes an elongated barrel surrounding said stylet and having a closed end and an open end, said proximal end of said stylet being secured in said closed end of said barrel, said shank of said stylet extending through said open end of said barrel, and said handle means including a grip member extending transversely from said barrel at said open end.

3. The invention as recited in claim 2 wherein said barrel has a bore therein having a diameter slightly larger than the diameter of said catheter such that said catheter is slidable in said bore, said bore having an extension of reduced cross section at said closed end of said barrel, and said catheter having a length slightly less than the length of said stylet and a first end disposed at said closed end of said barrel and a second end disposed at said distal end of said stylet, said second end of said catheter covering said distal end of said stylet when said first end of said catheter is adjacent said reduced extension of said bore and said reduced extension of said bore having a length sufficient to permit said second end of said catheter to bare said distal end of said stylet when said first end of said catheter tube is squeezed further into said reduced extension of said bore.

4. The invention as recited in claim 2 wherein said proximal end of said stylet is flat and has a width greater than the diameter of said shank, and said closed end of said barrel has a pair of slots therein, said flat proximal end being received and anchored in said slots whereby said stylet is prevented from rotational or longitudinal movement with respect to said barrel.

5. The invention as recited in claim 4 wherein said barrel has a bore therein having a diameter slightly larger than the diameter of said catheter such that said catheter is slidable in said bore, said bore having an extension of reduced cross section at said closed end of said barrel, and said catheter has a length slightly less than the length of said stylet and a first end disposed at said closed end of said barrel and a second end disposed at said distal end of said stylet, said second end of said catheter covering said distal end of said stylet when said catheter is adjacent said reduced extension portion of said bore and said reduced extension of said bore having a length sufficient to permit said second end of said catheter to bare said distal end of said stylet when said first end of said catheter is squeezed into said reduced extension of said bore.

6. The invention as recited in claim 5 wherein a flat reinforcing rib is integrally formed with said barrel and runs along the longitudinal length of said barrel from said closed end to said handle grip.

7. The invention as recited in claim 6 wherein said barrel, said grip member and said reinforcing rib are integrally formed of a plastic material.

8. The invention as recited in claim 4 wherein said barrel is made of a plastic material and has first and second blind holes disposed therein in diametrically opposed relation at said closed end to define a mass of plastic between each of said slots and each of said blind holes, respectively, whereby said masses of material may be melted to anchor said stylet to said barrel.

9. The invention as recited in claim 1 wherein said stylet is bent upon itself at said proximal end to define said support means and said stylet, said support means and said handle means are integrally formed.

10. The invention as recited in claim 1 wherein said support means includes a support member disposed parallel to said shank of said stylet, said support member having a first end bent upon itself and anchored to said proximal end of said stylet and a second end terminating at an arcuate handle grip defining said handle means.

11. The invention as recited in claim 1 wherein said support means extends along said shank of said stylet in parallel relation therewith.

12. The invention as recited in claim 1 wherein said handle means is spaced substantially four inches from said distal end of said stylet.