CA1172929A - Skin exit device - Google Patents
Skin exit deviceInfo
- Publication number
- CA1172929A CA1172929A CA000399968A CA399968A CA1172929A CA 1172929 A CA1172929 A CA 1172929A CA 000399968 A CA000399968 A CA 000399968A CA 399968 A CA399968 A CA 399968A CA 1172929 A CA1172929 A CA 1172929A
- Authority
- CA
- Canada
- Prior art keywords
- flange portion
- cover
- hollow portion
- skin
- receptacle
- 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
Links
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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
- A61M2039/0267—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body comprising sensors or electrical contacts
-
- 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
- A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
- A61M39/02—Access sites
- A61M39/0247—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body
- A61M2039/0288—Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body protectors, caps or covers therefor
Landscapes
- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Gastroenterology & Hepatology (AREA)
- Pulmonology (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biophysics (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Media Introduction/Drainage Providing Device (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
The disclosure herein describes a skin exit device for storing the end portions of elongated ele-ments, such as catheters, electrical conductors, optical fibers and the like, which must remain in posi-tion within a body on a relatively long term basis;
the device comprises a receptacle and a cover; the receptacle has a flange portion which is adapted to be inserted under the skin of the body and a hollow portion which defines a chamber for receiving a portion of the elongated members; a second flange portion on the receptacle limits the engagement of the cover with the hollow portion of the receptacle.
The disclosure herein describes a skin exit device for storing the end portions of elongated ele-ments, such as catheters, electrical conductors, optical fibers and the like, which must remain in posi-tion within a body on a relatively long term basis;
the device comprises a receptacle and a cover; the receptacle has a flange portion which is adapted to be inserted under the skin of the body and a hollow portion which defines a chamber for receiving a portion of the elongated members; a second flange portion on the receptacle limits the engagement of the cover with the hollow portion of the receptacle.
Description
' ~ 72929 FIELD OF THE INVENTION
The present invention relates to a skin exit device for storing the end portions of elongated ele-ments such as catheters, electrical conductors, optical fibers, elements and the like, which must remain in position within a body on a relatively long term basis.
BACKGROUND OF THE INVENTION
Various sùrgical procedures are practiced on small laboratory animals such as rats, hamsters, guinea pigs or the like. There are numerous instances where repetitive samplings of biological fluids such as arterial blood, bile cephalorachidian fluid, urine, must be made in these animals. Also, in some cases, insertion of intravenous catheters must be carried out ¦
to allow the administration of pharmaceutical agents. ' Other cases, for instance, may include bile recircula-tion permitting the determination of the entero-hepatic cycle of a substance or the possibility of obtaining the relation concentration-versus-time or other pharma-cokinetic parameters of a drug, in plasma, bile or urine.
There is a need for a skin exit device which will give the animal complete freedom of movement as well as free access to food and water recipients and which will keep the animal from reaching the catheter or other elements. Such device must, however, allow the animal to act under his own control providing him ! 1 729~ 9
The present invention relates to a skin exit device for storing the end portions of elongated ele-ments such as catheters, electrical conductors, optical fibers, elements and the like, which must remain in position within a body on a relatively long term basis.
BACKGROUND OF THE INVENTION
Various sùrgical procedures are practiced on small laboratory animals such as rats, hamsters, guinea pigs or the like. There are numerous instances where repetitive samplings of biological fluids such as arterial blood, bile cephalorachidian fluid, urine, must be made in these animals. Also, in some cases, insertion of intravenous catheters must be carried out ¦
to allow the administration of pharmaceutical agents. ' Other cases, for instance, may include bile recircula-tion permitting the determination of the entero-hepatic cycle of a substance or the possibility of obtaining the relation concentration-versus-time or other pharma-cokinetic parameters of a drug, in plasma, bile or urine.
There is a need for a skin exit device which will give the animal complete freedom of movement as well as free access to food and water recipients and which will keep the animal from reaching the catheter or other elements. Such device must, however, allow the animal to act under his own control providing him ! 1 729~ 9
-2-with no stress, no aggressiveness that would otherwise be caused by either prolonged immobilization or any other restraining method.
An artificial cutaneous stoma has been described in United States Patent no. 3,752,162 issued August 14 1973, to Newash. The stoma consists of a cup-shaped body with a closure membrane closing the top of the cup-shaped body; both the body and the membrane are '`
designed to be initially implanted totally beneath the skin and, after substantial healing has taken place, an incision is made through the overlying skin and through the cover of the membrane to expose the coiled length of the catheter contained therein. Such device is impractical for small laboratory animals since there is very little space available beneath the skin to implant such a cup-shaped member. Also, the installa-tion of such a device would necessarily require the displacing of muscle tissues.
OBJECTS AND STATEMENT OF THE INVENTION
It is an object of the present invention to provide a skin exit device which can be mounted to small laboratory animals.
It is also an object of the present invention to provide such device which is permanently attached to small animals for enabling various samplings and testings, as mentionned above, and which provide an important amount of time and labour reduction in their ' 1 7292~
operation.
The present invention is therefore concerned with a skin exit device that consist of a receptacle and a cover, the receptacle being constructed in a way that it has a portion located underneath the skin of the animal and the remaining outer portion covered by the cover.
The present invention therefore relates to a skin exit device for storing end portions of elongated elements such as catheters, electrical conductors, optical fibers and the like, which must remain in position within the body on a relatively long term basis, which comprises: a receptacle that includes a hollow portion defining an open-end chamber for receiv-ing the end portion of the elongated members therein, a flange portion mounted at the lower part of the hollow portion and adapted to be inserted under the skin of the body of the animal, and a second flange portion mounted to the outer wall of the hollow portion above the first flange portion; the device further includes a cover which closes the upper end of the chamber and engages the outer wall of the hollow portion; the second flange portion serves as a stopper for the cover when it engages the outer wall of the receptacle.
Other objects and advantages of the present invention will become apparent to those skilled in the art from reading the following detailed description 1 1 729~9 of preferred embodiments in connection with the accom-panying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective schematic drawing showing a skin ex~t device made in accordance with the present invention mounted on a small laboratory animal;
Figure 2 is a cross-sectional elevation of the device shown in Figure l; and Figure 3 is an cross-sectional elevation of another embodiment of the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
_ The present invention is particularly aimed for use with small laboratory animals such as the one illustrated at 10 in figure 1 and which may consist of a rat, mouse, hamster, guinea pig or the like. The skin exit device, generally denoted 12, is preferably installed at the nape of the neck of the animal and consists basically of a receptacle 14 and of a cover or cap 16.
In one particular use of the invention, the animal 10 is first anesthetized and one or more catheters or similar elongated elements are inserted under the skin of the animal and guided to reach an incision situated in the area of the cervical region, such as the nape of the neck. There, the end portion 18 of the element passes through the skin exit device 10 for connection to the appropriate extra-corporeal equipment ~ ~ 72929 or it may be coiled within the receptacle 10 for future use.
Referring to figure 2, the receptacle compri-ses a hollow portion 20 which defines an open-ended cylindrical chamber 22 in which is received the end portion 18 of the elongated element. The hollow portion has an outer wall 24 which is threaded and engageable with the inner threaded portion 26 of the cover 16.
The lower part of the receptacle has a large annular flange portion 28 and a smaller flange portion 30 verti-cally spaced above flange portion 28 and on which sits the lower edge 32 of the cover 16. The space between the flange portions 28 and 30 serves to receive the skin of the animal and flange portion 30 serves as a stopper for the lower edge of the cover to prevent the latter from squeezing the skin of the animal.
The receptacle is made of a bio-compatible polymer. Flanges 28 and 30 are preferably integrally formed with the hollow portion; however, these parts may be fixedly attached thereto. Nevertheless, flange portion 28 should be made of a physiologically inert flexible substance such as silicone rubber. The flange portion 28 is implanted totally beneath the skin of the animal after a small incision has been practiced therethrough. The contour of the flange portion 28 has a series of apertures 34 which enables stitching the flange to the skin once it is implanted.
The cover is made of a resistant plastic material, preferably transparent so as to enable visual inspection of the end portion 18 of the elongated elements when coiled inside the chamber 22.
Referring to figure 3, the skin exit device 12' has basically the same components and construction as that shown in figure 2. In this embodiment, however, an elastic membrane 35 is adhesively secured to the underface of the flange 28 so that a portion 36 thereof may close the bottom end of chamber 22'. This membrane is pierceable so that a small hole can be practised therein to allow a catheter to be passed therethrough in a tight wall engagement. This construction prevents any fluid, which could be found in chamber 22', from returning inside the body of the animal. Evidently, this membrane must also be bio-compatible since it is implanted under the skin of the animal. The device 12' also includes on the top face of the cover 16', a transparent window 38 which allows visual inspection of the interior of the chamber 22'.
An artificial cutaneous stoma has been described in United States Patent no. 3,752,162 issued August 14 1973, to Newash. The stoma consists of a cup-shaped body with a closure membrane closing the top of the cup-shaped body; both the body and the membrane are '`
designed to be initially implanted totally beneath the skin and, after substantial healing has taken place, an incision is made through the overlying skin and through the cover of the membrane to expose the coiled length of the catheter contained therein. Such device is impractical for small laboratory animals since there is very little space available beneath the skin to implant such a cup-shaped member. Also, the installa-tion of such a device would necessarily require the displacing of muscle tissues.
OBJECTS AND STATEMENT OF THE INVENTION
It is an object of the present invention to provide a skin exit device which can be mounted to small laboratory animals.
It is also an object of the present invention to provide such device which is permanently attached to small animals for enabling various samplings and testings, as mentionned above, and which provide an important amount of time and labour reduction in their ' 1 7292~
operation.
The present invention is therefore concerned with a skin exit device that consist of a receptacle and a cover, the receptacle being constructed in a way that it has a portion located underneath the skin of the animal and the remaining outer portion covered by the cover.
The present invention therefore relates to a skin exit device for storing end portions of elongated elements such as catheters, electrical conductors, optical fibers and the like, which must remain in position within the body on a relatively long term basis, which comprises: a receptacle that includes a hollow portion defining an open-end chamber for receiv-ing the end portion of the elongated members therein, a flange portion mounted at the lower part of the hollow portion and adapted to be inserted under the skin of the body of the animal, and a second flange portion mounted to the outer wall of the hollow portion above the first flange portion; the device further includes a cover which closes the upper end of the chamber and engages the outer wall of the hollow portion; the second flange portion serves as a stopper for the cover when it engages the outer wall of the receptacle.
Other objects and advantages of the present invention will become apparent to those skilled in the art from reading the following detailed description 1 1 729~9 of preferred embodiments in connection with the accom-panying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a perspective schematic drawing showing a skin ex~t device made in accordance with the present invention mounted on a small laboratory animal;
Figure 2 is a cross-sectional elevation of the device shown in Figure l; and Figure 3 is an cross-sectional elevation of another embodiment of the present invention.
DESCRIPTION OF PREFERRED EMBODIMENTS
_ The present invention is particularly aimed for use with small laboratory animals such as the one illustrated at 10 in figure 1 and which may consist of a rat, mouse, hamster, guinea pig or the like. The skin exit device, generally denoted 12, is preferably installed at the nape of the neck of the animal and consists basically of a receptacle 14 and of a cover or cap 16.
In one particular use of the invention, the animal 10 is first anesthetized and one or more catheters or similar elongated elements are inserted under the skin of the animal and guided to reach an incision situated in the area of the cervical region, such as the nape of the neck. There, the end portion 18 of the element passes through the skin exit device 10 for connection to the appropriate extra-corporeal equipment ~ ~ 72929 or it may be coiled within the receptacle 10 for future use.
Referring to figure 2, the receptacle compri-ses a hollow portion 20 which defines an open-ended cylindrical chamber 22 in which is received the end portion 18 of the elongated element. The hollow portion has an outer wall 24 which is threaded and engageable with the inner threaded portion 26 of the cover 16.
The lower part of the receptacle has a large annular flange portion 28 and a smaller flange portion 30 verti-cally spaced above flange portion 28 and on which sits the lower edge 32 of the cover 16. The space between the flange portions 28 and 30 serves to receive the skin of the animal and flange portion 30 serves as a stopper for the lower edge of the cover to prevent the latter from squeezing the skin of the animal.
The receptacle is made of a bio-compatible polymer. Flanges 28 and 30 are preferably integrally formed with the hollow portion; however, these parts may be fixedly attached thereto. Nevertheless, flange portion 28 should be made of a physiologically inert flexible substance such as silicone rubber. The flange portion 28 is implanted totally beneath the skin of the animal after a small incision has been practiced therethrough. The contour of the flange portion 28 has a series of apertures 34 which enables stitching the flange to the skin once it is implanted.
The cover is made of a resistant plastic material, preferably transparent so as to enable visual inspection of the end portion 18 of the elongated elements when coiled inside the chamber 22.
Referring to figure 3, the skin exit device 12' has basically the same components and construction as that shown in figure 2. In this embodiment, however, an elastic membrane 35 is adhesively secured to the underface of the flange 28 so that a portion 36 thereof may close the bottom end of chamber 22'. This membrane is pierceable so that a small hole can be practised therein to allow a catheter to be passed therethrough in a tight wall engagement. This construction prevents any fluid, which could be found in chamber 22', from returning inside the body of the animal. Evidently, this membrane must also be bio-compatible since it is implanted under the skin of the animal. The device 12' also includes on the top face of the cover 16', a transparent window 38 which allows visual inspection of the interior of the chamber 22'.
Claims (8)
1. A skin exit device for storing end portions of elongated elements, such as catheters, electrical conductors, optical fibers, and the like, which must remain in position within a body on a relatively long term basis, said device comprising:
- a receptable including:
a) a hollow portion defining an open-end chamber for receiving therein said end portions of said elements;
b) a first flange portion mounted at the lower part of said hollow portion and adapted to be inserted under the skin of said body;
c) a second flange portion mounted to the outer wall of said hollow portion and spaced above said first flange portion;
- a cover closing the upper end of said chamber and engaging the outer wall of said hollow portion; said second flange portion serving as a stopper for said cover when engaging said outer wall.
- a receptable including:
a) a hollow portion defining an open-end chamber for receiving therein said end portions of said elements;
b) a first flange portion mounted at the lower part of said hollow portion and adapted to be inserted under the skin of said body;
c) a second flange portion mounted to the outer wall of said hollow portion and spaced above said first flange portion;
- a cover closing the upper end of said chamber and engaging the outer wall of said hollow portion; said second flange portion serving as a stopper for said cover when engaging said outer wall.
2. A device as defined in claim 1, further comprising a pierceable elastic membrane fixed to the underface of the first flange portion and covering the lower end of said hollow portion of said receptacle.
3. A device as defined in claim 1, wherein at least said first flange portion is made of physio-logically inert flexible material.
4. A device as defined in claim 1, wherein said receptacle is cylindrical in shape and wherein said second flange portion has a diameter smaller than that of said first flange portion.
5. A device as defined in claim 1, wherein said first flange portion includes a series of apertures at the periphery thereof for stitching said first flange portion to the skin of said body.
6. A device as defined in claim 1, wherein said cover is threadedly engaged to said outer wall of said hollow portion.
7. A device as defined in claim 1, wherein said cover has a transparent top portion for permitting visual examination of the elements in said hollow portion.
8. A device as defined in claim 1, wherein said cover is made of transparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399968A CA1172929A (en) | 1982-03-31 | 1982-03-31 | Skin exit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399968A CA1172929A (en) | 1982-03-31 | 1982-03-31 | Skin exit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1172929A true CA1172929A (en) | 1984-08-21 |
Family
ID=4122451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399968A Expired CA1172929A (en) | 1982-03-31 | 1982-03-31 | Skin exit device |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1172929A (en) |
-
1982
- 1982-03-31 CA CA000399968A patent/CA1172929A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |