US3894540A - Catheter - Google Patents
Catheter Download PDFInfo
- Publication number
- US3894540A US3894540A US404400A US40440073A US3894540A US 3894540 A US3894540 A US 3894540A US 404400 A US404400 A US 404400A US 40440073 A US40440073 A US 40440073A US 3894540 A US3894540 A US 3894540A
- Authority
- US
- United States
- Prior art keywords
- catheter
- conduit
- sheath
- tubes
- protective
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
- A61M25/0111—Aseptic insertion devices
Definitions
- a catheter for urinary and other purposes comprising means forming an elongated flexible conduit having an insertion end, the conduit also having a distal end spaced from the insertion end. Means are provided forming a protective sheath extending in continuous form from the insertion end toward the area of the distal end, and maintaining a substantially sterile condition on the entire outer surface of the conduit.
- the protective sheath may be a pair of telescopically-arranged tubes, or may be an accordion pleated light-weight material, for example. Catheters of this type may be provided for intermittent use or as indwelling catheters.
- This invention relates to a catheter having special construction features providing for protection of the patient against infection. More particularly. this invention relates to a catheter of the urinary type. which is used in large numbers by practitioners of rehabilitation medicine. particularly in the care of patients who have suffered spinal injury or strokes or are otherwise unable to control muscular functions.
- a catheter of the intermittent type is prescribed. in which situation the catheter may be subjected to a single use and then discarded. In other situations. the catheter is allowed to remain within the patients body for several days or more. with substantially continuous drainage of body fluid into a collector.
- This invention relates to catheters of a highly useful form. as compared to catheters of the prior art.
- closed drainage system Although a system called a closed drainage system" is sometimes used. and has lengthened the time before the patient becomes infected. it does not address itself to the theoretical and actual modes of urinary tract infections as a result of catheter utilization.
- FIG. 1 is a view in perspective of a catheter comprising one form of this invention, particularly adapted for intermittent use;
- FIG. 2 is a longitudinal sectional view of the catheter of FIG. 1;
- FIG. 3 is an enlarged view of the end portion of the catheter of FIG. 2. showing the manner of its insertion into the patient's body;
- FIG. 4 is a longitudinal view. partially in section. showing a catheter of the indwelling type. in accor dance with this invention:
- FIG. 5 is a view of the end portion of the catheter of FIG. 4, showing the manner of its insertion into and connection to the patient's body. and;
- FIG. 6 is a view in longitudinal elevation. showing a still further form of catheter. which is particularly adapted for use as an intermittent catheter.
- the number I0 designates a conduit which has the shape of an clottgated tube. usually made of rubber or plastic. which is intended to be inserted into a passage in the patients body. such as insertion into the urethra or trachea. for example.
- the conduit I0 has an insertion end II and a distal end 12 through which the bod) fluid is dis charged.
- a protective tube I3 extends beyond the insertion end ll of the conduit I0. but terminates at an end portion 14 along the length of the conduit III.
- Another protective tube 15 is sealed to the conduit It) at a point near its distal end I2. and extends in telescoping relationship within the end portion 14 of the protective tube 13 to form an extendible and retractable protective sheath over the conduit 10.
- a telescopic overlap occurs between the tubes 13 and IS in the area I6 which appears in FIGS. I and 2 of the drawings.
- a light-weight flexible material shown as having a collapsible accordion-pleat configuration.
- the supplemental sheet 20 is shown with accordion-pleats 2]. it may have any form at all. so long as it is longitudinally collapsible in a manner to allow the tubes I5. I3 to telescope.
- the insertion end I] of the conduit I0 is located within a dilator portion 22 of the tube I3, which extends beyond the end of the insertion end II of conduit 10.
- a sealing cap 23 is provided to cover. seal and lubricate the dilator 22.
- the physician removes the scaling cap 23 and inserts the dilator 22 into the patients body. such as the meatus. Holding the tube 13 on one hand and the tube 15 in the other hand. he slides the tube 15 within the tube 13.
- IS are quite rigid so that they may be teleseoped (even by a patient whose neuromuscular control or skeletal alignment is poor) without substantially bending or kinking the conduit 10. Since the tube I5 is connected to the conduit 10, the entire conduit I0 slides longitudinally through the tube I3, through the meatal dilator 22 and into the urethra and 3 ultimately into the bladder. for example. fluid thus released from the bladder flows out through the distal end 12 of the catheter.
- FIGS. 1 to 3 Since the catheter of FIGS. 1 to 3 is intendedprimarily for intermittent use. the usual practice. after all of the fluid has been drained. is to simply withdraw the tube telescopically rcarwardly through the tube l3 until the insertion end ll of the catheter conduit 10 has been withdrawn completely from the patient's body. The catheter may be discarded or cleaned. resterilized and re-used.
- FIGS. 4 and 5 show a modified form of the apparatus. intended for indwelling use.
- the number 3 designates the conduit having an insertion end 31 for insertion into the patient's body.
- the distal end 32 of the conduit is formed integrally with a collecting bag 33 and is sealed thereto.
- is an extendible and retractable protective sheath 34. which again has been shown as having accordion-pleats. 35.
- the protective sheath 34 is sealed to a plug 36 which carries a rolledup. flexible tube or sheath of rubber or the like 37 sealingly secured to its end.
- FIG. 5 shows the manner of insertion of the catheter into the patients body. with the sheath 37 unrolled and forming an anchor and a seal to the patients body. while the conduit 30 is inserted into the urethra or other body passage. scaled completely from bacterial invasion from outside by the plug 36 and by the protective sheath 34. in the act of insertion. the bag is moved toward the patients body. sliding the entire conduit 30 in the same direction while the collapsing ofthe protec tive sheath 34 permits such movement without interfering with the integrity of the protective seal.
- the catheter of FIGS. 4 and 5 is intended for indwelling use. It is often provided with a balloon. not shown. which is of the usual type and which is well known per se. and which is inflated in order to form an anchoring means within the bladder. once the catheter has been inserted into the bladder.
- a valve 40 is provided for the occassional removal of collected liquids from the bag.
- the number 4] designates a check valve located near the insertion end 31 of the conduit 30.
- Such check valve may be of a conventional form. but it is arranged in such a manner as to prevent the refluxing of liquid that has already been drained. back into the patients body.
- a similar valve 42., with its check valve feature similarly arranged. is located within the conduit 30. near the distal end 32.
- FIG. 6 of the drawings shows a modified form in ac' cordance with this invention.
- the conduit is not provided with any telescoping tube such as those disclosed in FIGS. 1 and 2, but is instead provided with an extendible and retractable protective sheath 5] running substantially the entire length of the conduit 50.
- the protective sheath extends beyond the insertion end 52 of the conduit 50, and is scaled upon itself. using a seal such as that identified by the number 53.
- the physician or the patient merely grasps the protective sheath 52 near its distal end and slides the conduit 50 through the seal 53. upon inserting it into the patient's body.
- the catheter in accordance with this invention has solved the problem that stands out above all the rest in patients using urinary catheters the problem of infection.
- Such infection is usually the result of contamination of the urinary catheter with pathogenic micro-organisms.
- contamination occurs either by contamination of the catheter by the individual inserting the catheter. by contamination of the catheter by the patient receiving the catheter (micro-organisms living in the distal part of the urethra). or by contamination of the external wall of a catheter which is indwelling. In the latter case. the most common source of infection is the patients own perineum followed by the bed clothes. and by the attending staff which manipulates the catheter. Infection may also occur from infected urine which has been extruded into a urinary collection device and remains attached to a catheter.
- a further point which is relevant to this invention is the fact that bacteria capable of causing disease live in the distal urethra. These bacteria are often pushed into the bladder with the introduction of the catheter.
- the catheter equipped with the meatal dilator described in this specification markedly reduces this occurrence since the meatal dilator contacts and covers the area involved and insulates it from the catheter tube which is introduced into the bladder.
- bacteria can migrate up the external wall of the catheter reaching the bladder by way of the urethra. Further. if oftens occurs that a urinary collecting device is displaced by someone on the hospital staff to a level higher than the bladder itself, with reflux occurring into the bladder from the collecting device and the collecting tube. This is the result of lifting the collecting device either by the patient himself. or by the hospital staff. above the level of the bladder.
- a check valve has been provided adjacent to the insertion end of the catheter. thus preventing the fluid to drain back from the catheter into the patient's body.
- the prior art shows the concept of placing flutter valves on the collecting device to prevent reflux of already infected urine. This ignores the fact that has been developed. that the major source of reflux is from the catheter itself. and the placement of valves in the catheter as well as in the collecting tube joining the catheter to the collecting device is important. It should preferably include a drop-well at the termination of the catheter conduit.
- the catheter according to this invention has special advantage in catheterizing a female.
- the role of catheterizing a female is usually delegated to a female. i.e. nurse. orderly. etc.. and quite commonly one may observe the catheter being inadvertently or mistakenly placed in the vagina only to be withdrawn and replaced in the urethra and fed into the bladder with resulting danger of initiating bladder infection.
- no catheter manufacturer has provided a vaginal occludcr which denies access to the vagina by the catheter. thereby insuring initial placement in the urethra.
- antiseptic material may be contained within the collecting bag.
- Time-release capsules may be used. so that antiseptic or bactericidal or bacteriostatic materials can be released at various points in time.
- Self-catheterization is the treatment of choice for the neurogenic bladder secondary to spinal cord or brain malfunction.
- Many patients, especially quadraplcgic patients with a functional cord level at the sixth cervical spinal cord level (C-6. a common spinal cord functional level after trauma) have been denied this treatment of choice by the catheters of the prior art. since they do not account for the inability of the patient to use fine hand movement.
- the catheter which is the object of this invention is. accordingly. ideally adapted to be used by patients with neurological disorders involving the bladder and also the upper extremities.
- FIGS. 1. 2 and 6 are tight fitting. and are capable of substantially completely impeding the migration of bateria along the catheter tube 10, it is sometimes desirable to apply a bactericidal ointment or jelly to the surfaces of these tubes before they are enclosed by the supplemental protective sheet 21, 51.
- a bactericidal ointment or jelly is sometimes desirable to apply to the surfaces of these tubes before they are enclosed by the supplemental protective sheet 21, 51.
- Other variations in the actual use of the catheter will further become apparent to skilled physicians.
- catheters in accordance with this invention are useful for other uses than urinary catheters.
- they can be used for tracheal aspiration as in the case. for example. of a patient who has had a tracheotomy where his respirations are embarrased by excess secretions. in such a situation the patient has difficulty coughing up. because of the open tracheotomy tube. and therefore excess fluids need to be suctioned out.
- Catheters in accordance with this invention are ideally suited for that purpose. and their capability of preventing bacterial infection is an important factor in such use.
- a catheter comprising means forming an elongated flexiblc conduit an operative portion of the length of which is intended to be inserted into the body.
- said conduit having an insertion end constructed and arranged for insertion through a passage in the body. and for flow of fluid through said conduit.
- said conduit having a distal end spaced apart from said insertion end. and means forming an cxtendible and retractable protective sheath extending at least about said operative length from said insertion end toward said distal end and sealed to inhibit invasion of foreign microorganisms to the entire corresponding surface of said conduit and maintaining a substantially sterile condition on the entire corresponding surface of said conduit.
- the outer surface of said conduit being sealed with respect to said sheath against invasion of foreign microorganisms.
- said conduit having an opening for the discharge of said fluid beyond said sheath.
- said conduit being longitudinally slidable relative to said sheath for insertion into the body. and at least a portion of said sheath being retractable without interfering with the integrity of the protective seal to permit such relative sliding of said conduit.
- said outer surface of said operative length which is to be inserted into the patients body being protected from bacterial invasion through said sheath during the period of insertion and the period of use.
- said sheath comprises a pair of tubes slidably arranged on said conduit. one of said tubes also being slidable over the other said tube. whereby said tubes are telescopically contractable to facilitate insertion of said conduit into the body. while maintaining the integrity of the protective sheath.
- said sheath is substantially accordion-pleated.
- said sheath comprises a pair of tubes slidably arranged on said conduit. one of said tubes also being slidable over the other said tube.
- sealing and anchoring means is secured to said protective sheath outside of said conduit and is also sccured to the body into which said conduit is inserted.
- a body fluid removable catheter having a means for sterile insertion into a body comprising:
- a catheter conduit having a body insertion end portion and a fluid discharge end por- 10 tion.
- said body insertion portion having a first protective tube slidably enclosing a length of said insertion portion.
- a means for extending said catheter insertion portion comprising a second protective tube portion fixed. sealed to and enclosing a length of said fluid discharge end portion.
- said first and second protective tube portions being telescopically connected and having a combined length greater than the sealed length of said catheter conduit. whereby sliding motion of said first protective 4 tube with respect to said second protective tube extends said catheter.
- the catheter defined in claim 17 including a contamination prohibiting means comprising a collapsible flexible supplemental sheath. one end thereof being attached adjacent to an end of said first protective tube and the second end thereof being attached adjacent to an end of said second protective tube.
- first and second protective tubes are slidably arranged on said body insertion end portion of said catheter conduit and said fluid discharge end portion of said catheter conduit, one of said tubes also being slidable over the other said tube. whereby said tubes are telescopically contractable to facilitate insertion of said body insertion end portion into the body, while maintaining the integrity of the protective sheath formed by said pair of tubes.
- An improved catheter substantially sealed against the invasion of micro-organism infection of the type comprising a means for forming an elongated flexible conduit a portion of the length of which is intended to be inserted into the body, said conduit having an insertion end constructed and arranged for insertion through a passage in the body. and for flow of fluid into and through said conduit. said conduit having a distal end spaced apart from said insertion end and having an opening for the discharge of said fluid;
- the improvement which consists of means forming an extendible and retractable protective sheath extending at least about said length from said insertion end toward said distal end, means for providing against the invasion of micro-organisms comprising a sealed connection between said conduit and said sheath located adjacent said distal end of said conduit, and maintaining a substantially sterile condition on the entire corresponding surface of said conduit, said distal end having said opening beyond said sheath.
- said conduit being longitudinally slidable relative to said sheath for insertion into the body and said sheath being retractable to permit such relative sliding of said conduit.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US404400A US3894540A (en) | 1973-10-09 | 1973-10-09 | Catheter |
AU78603/75A AU7860375A (zh) | 1973-10-09 | 1975-02-26 | |
US05/594,097 US4062363A (en) | 1973-10-09 | 1975-07-08 | Catheter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US404400A US3894540A (en) | 1973-10-09 | 1973-10-09 | Catheter |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/594,097 Continuation-In-Part US4062363A (en) | 1973-10-09 | 1975-07-08 | Catheter |
Publications (1)
Publication Number | Publication Date |
---|---|
US3894540A true US3894540A (en) | 1975-07-15 |
Family
ID=23599447
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US404400A Expired - Lifetime US3894540A (en) | 1973-10-09 | 1973-10-09 | Catheter |
US05/594,097 Expired - Lifetime US4062363A (en) | 1973-10-09 | 1975-07-08 | Catheter |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05/594,097 Expired - Lifetime US4062363A (en) | 1973-10-09 | 1975-07-08 | Catheter |
Country Status (2)
Country | Link |
---|---|
US (2) | US3894540A (zh) |
AU (1) | AU7860375A (zh) |
Cited By (152)
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US3991762A (en) * | 1974-09-30 | 1976-11-16 | Radford F Richard | Aspirating device for patient ventilation apparatus |
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US4170996A (en) * | 1977-11-03 | 1979-10-16 | Rehabilitation Institute Of Chicago | Catheterization unit |
FR2435953A1 (fr) * | 1978-09-13 | 1980-04-11 | Oneil Alexander G B | Instrument medical du type catheter |
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US11255469B2 (en) * | 2017-10-17 | 2022-02-22 | Drägerwerk AG & Co. KGaA | Sealing device and medical device with at least one sealing device |
US11771865B2 (en) | 2017-10-25 | 2023-10-03 | Hollister Incorporated | Caps for catheter packages |
US11400257B2 (en) | 2017-11-13 | 2022-08-02 | Teleflex Life Sciences Pte. Ltd. | Frictionless catheter |
US11458283B2 (en) | 2017-11-20 | 2022-10-04 | Hollister Incorporated | Urinary catheter assemblies and packaging for such assemblies |
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US20210100979A1 (en) * | 2017-12-22 | 2021-04-08 | Convatec Limited | Female catheter locator tip |
US11904111B2 (en) * | 2017-12-22 | 2024-02-20 | Convatec Limited | Female catheter locator tip |
EP3793626B1 (en) | 2018-05-17 | 2022-12-07 | Hollister Incorporated | Methods of making sleeved hydrophilic catheter assemblies |
US20230133471A1 (en) * | 2018-06-28 | 2023-05-04 | Adapta Medical, Inc. | Catheters having low viscosity lubricant |
US11497886B2 (en) | 2018-07-20 | 2022-11-15 | Coloplast A/S | Intermittent urinary catheter assembly |
US11969558B2 (en) | 2018-07-20 | 2024-04-30 | Coloplast A/S | Intermittent urinary catheter assembly |
US11771584B2 (en) | 2018-12-20 | 2023-10-03 | Coloplast A/S | Urine collecting bag |
US20240050693A1 (en) * | 2021-04-23 | 2024-02-15 | Convatec Limited | Intermittent catheter |
Also Published As
Publication number | Publication date |
---|---|
US4062363A (en) | 1977-12-13 |
AU7860375A (zh) | 1976-08-26 |
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