 Pneumatic fastener-driving tool and method |
| A pneumatically powered tool and method are provided in which recoil is substantially eliminated ... |
|
| Bottle washer discharge sorting arrangement |
| A primary object of the present invention is the provision of an arrangement for sorting in an ... |
|
| Contactless comminution of concrements |
| I claim: 1. Method for contactfree comminution of a concrement in the body of a living being, ... |
|
| Internal surgical stapler |
| What is claimed is: 1. In a suture stapler, holding means for holding a staple; ram means for ... |
|
| Solder delivery system |
| We claim: 1. A solder delivery system comprising: (a) two layers of polymeric material, at least ... |
|
| Method and apparatus for blowing an optical fibre member |
| According to the present invention there is provided a method of introducing at least one optical ... |
|
| Guide apparatus for elongated flexible web |
| There are a number of important aspects to the present invention. In accordance with one important ... |
|
| Apparatus and method for ligating a body vessel |
| In practicing the present invention, a cut end of a blood vessel is closed by applying a hemostat ... |
|
| Reinforced multilayer filament reinforced ring structure |
| OF THE INVENTION One factor which must be kept in mind in carrying out the present method is the ... |
|
| Chain bridle equipment for keeping metal strip tensions at a constant level |
| OF THE INVENTION If the chain bridle is installed in a slitting line to produce back tension, the ... |
|
|
Peritoneal dialysis catheter
| Details |
Inventors: Twardowski, Zbylut J.; Nolph, Karl D.;
Assignee: Curators of the University of Missouri (Columbia, MO)
Primary Examiner: Pellegrino; Stephen C.
Assistant Examiner:
Attorney, Agent or Firm: Mattenson; Charles R., Flattery; Paul C., Ryan; Daniel D.
A peritoneal catheter comprises a flexible catheter tube carrying porous cuff means to facilitate permanent securance of the catheter to the abdominal wall. The catheter tube defines, in its natural, unstressed condition, a bent segment adjacent the porous cuff means. This permits the catheter to be mounted in a tunnel formed through the abdominal wall in relatively unstressed configuration with both ends pointing downwardly. |
|
DETAILED DESCRIPTION That which is claimed is: 1.
A peritoneal catheter which comprises a flexible catheter tube having a proximal and a distal end portion, said distal end portion defining flow port means for fluid communication between the bore of the catheter tube and the peritoneal cavity, said catheter carrying spaced porous cuff means to facilitate permanent securance of the catheter to the abdominal wall, the improvement comprising, in combination: said catheter tube defining, in its natural, unstressed condition, a bent segment forming an arc in a range of 100.
degree.
to 180.
degree.
between said porous cuff means, said bent segment, in use, extending in a tunnel formed through the abdominal wall in its relatively unstressed configuration to direct the distal end portion toward a caudel direction within the peritoneal cavity of the patient while the proximal end also projects, when viewed by an onlooker, downwardly.
2.
The peritoneal catheter of claim 1 in which said proximal and distal end portions form an angle to each other that is supplementary thereto.
3.
The peritoneal catheter of claim 2 in which said arch is defined in a range of 120.
degree.
to 170.
degree.
.
4.
The peritoneal catheter of claim 1 in which said flexible catheter tube is made of silicone rubber.
Description:
TECHNICAL FIELD The Tenckhoff catheter is commercially available and widely used with patients who must undergo chronic peritoneal dialysis for maintenance in the absence of normal kidney function.
The catheter is made of silicone rubber, and has a pair of porous tissue attachment cuffs in spaced relation to each other, so that after implantation of the catheter into the abdominal wall, tissue grows into pores of the cuffs, for secure and permanent anchoring of the catheter in place.
In the article by Tenckhoff and Schechter entitled A Bacteriologically Safe Peritoneal Access Device, Trans.
Am.
Soc.
Artif.
Intern.
Organs 1968; 14: 181-187, the authors disclosed their new catheter and showed an arcuate subcutaneous catheter tunnel, so that both the external and internal end segments of the catheter were generally directed in a caudal direction (i
|
| Related patents |
|
|
Implant passageway
In the illustrated embodiment, the element 10 is tubular and can comprise e.g. an implanted conduit for peritoneal dialysis (abdominal dialysis). The conduit can be ...
|
|
|
Peritoneal catheter
We claim: 1. A peritoneal catheter for introducing into and withdrawing fluid from an abdominal cavity comprising a length of tubing having an intra-abdominal portion, a ...
|
|
|
Endotracheal tube incorporating a drug-irrigation device
The foregoing and other objects are obtained through an endotracheal tube particularly intended for artificial ventilation in surgical operations and intensive ...
|
|
|
Universal clamp
The present invention alleviates to a great extent the disadvantages of prior devices by providing a clamp for holding an article to an object including a base means for ...
|
|
|
Filter mouthpiece for a smoking article
It is now surprisingly found that if a ventilated filter mouthpiece, that is one in which ambient air is admitted to the filter by means of, for example, perforate ...
|
|
|
Suturing saddle
An adapter is shown for use in combination with a catheter in an over-the-needle insertion procedure. The adapter includes laterally wings extending from an elongated ...
|
|
|
Sheath for butterfly needles
An ever present danger to medical personnel using hypodermic needles which have been inserted in patients is the possibility that after a needle has been contaminated by ...
|
|
|
Method of securing a catheter body to a human skin surface
It is an object of the present invention to solve the conventional problems described above and to provide a method of securing a catheter body to a human skin in such a ...
|
|
|
Automatic self-protecting hypodermic needle assembly
These and other objects of the invention are achieved by a mechanism that uses gas pressure produced by the combining of two chemicals to propel a protective cap along ...
|
|
|
Pressure indicating medical injection gun
The pressure indicating injection gun according to the present invention provides the capability of accurately inflating a balloon catheter with a liquid to a ...
|
|
|
Obesity Surgery 
