US3690323A - Device for draining ventricular fluid in cases of hydrocephalus - Google Patents
Device for draining ventricular fluid in cases of hydrocephalus Download PDFInfo
- Publication number
- US3690323A US3690323A US94069A US3690323DA US3690323A US 3690323 A US3690323 A US 3690323A US 94069 A US94069 A US 94069A US 3690323D A US3690323D A US 3690323DA US 3690323 A US3690323 A US 3690323A
- Authority
- US
- United States
- Prior art keywords
- porous
- ribs
- set forth
- tube
- sleeve member
- 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
Links
Images
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
- A61M27/00—Drainage appliance for wounds or the like, i.e. wound drains, implanted drains
- A61M27/002—Implant devices for drainage of body fluids from one part of the body to another
- A61M27/006—Cerebrospinal drainage; Accessories therefor, e.g. valves
-
- 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
- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/84—Drainage tubes; Aspiration tips
Definitions
- ABSTRACT A modified ventricular end for a ventriculo-cardiac shunt used in the treatment of hydrocephalus and similar conditions is provided for removing fluids which accumulate in the cavity of the brain and must be drained to the heart.
- An umbrella-shaped cover protects an apertured end of the shunt for preventing the same from becoming attachad to the ventricular walls by growth of brain tissue thereon.
- the device which is inserted into the brain in a closed position and is subsequently opened, has supporting rib structures which may carry various sensing elements for observing conditions in the brain.
- FIG 4 DONALD E. w R Aw'ENTOR LJ- MERVIS BY W' i ATTORNEYS DEVICE FOR DRAINING VENTRICULAR FLUID IN CASES OF HYDROCEPHALUS RIGHTS OF GOVERNMENT
- the invention described herein may be manufactured, used, and licensed by or for The United States Government for governmental purposes without the payment to us of any royalty thereon.
- the invention relates generally to surgical devices for controlling the drainage of fluids between different portions of the body of a patient, and more particularly, to improvements in ventriculo-cardiac shunts for draining cerebrospinal fluid from the cerebral ventricles to other areas of the body in the treatment of hydrocephalus and similar conditions in which there is difficulty in the free circulation and absorption of cerebrospinal fluid.
- These devices normally include a closed-end drainage tube of quite small diameter which is inserted through an opening in the skull into the cranial cavity of the head, or more specifically, into a lateral cerebral ventricle of the patient, and which is provided with a plurality of small apertures in the wall thereof near the distal end of the tube in the brain of the patient for permitting passage therethrough of fluids collected from the'cerebral ventricles to the bloodstream.
- cerebral tissue ordinarily collects, or grows, about the end of these devices, or shunts, after they have been in use only a reasonably short period of time, causing the same to become attached to the ventricular or other membrane walls and thereby obstructing the normal flow of fluids thereinto.
- the patient often exhibits symptoms of intracranial hypertension (shunt malfunction). When this occurs, or, if the shunt fails for any other reason, it is necessary to replace the shunt, and this requires additional surgical procedures which could be of some danger to a patient.
- shunt malfunction When this occurs, or, if the shunt fails for any other reason, it is necessary to replace the shunt, and this requires additional surgical procedures which could be of some danger to a patient.
- Another object of this invention is to provide a device for draining cerebral-spinal fluid from the cerebral ventricles into other areas of the body for cases of hydrocephalus and similar conditions which does not tend to become obstructed with cerebral debris or tissue growths.
- Still another object of this invention is to provide a ventriculo-cardiac shunt for draining cerebrospinal fluid having an improved ventricular end portion which is not susceptible to becoming blocked or obstructed by brain tissue growth thereon and which is capable of supporting sensing devices for detecting various environmental conditions in the brain to assist in the treatment of such illnesses as hydrocephalus, brain cancer, and stroke.
- a ventriculo-cardiac shunt having a tubular end portion which is provided with a plurality of apertures for receiving fluid which may have accumulated in the regions of the brain cavity and which is enclosed within a novel umbrella-type cover slidably disposed thereover that is normally closed during insertion of the same into the brain cavity and may be readily opened once in place for supporting the tubular end portion in a standup relation from the ventricular walls.
- the umbrella includes a gauze-like or cheesecloth type material porous to the cerebrospinal fluid and suitably attached to or covering a plurality of elongate rib constructions of a firm elastic material which are preconditioned as a whole to form an open or conical configuration when supported or retained at one end thereof and released at the other end for permitting the same to expand, or open.
- a tubular sleeve which is slidably disposed over the tubular end portion and the umbrella portion of the device is provided for the purpose of normally maintaining the umbrella in a closed position and, whenever desired, upon withdrawal of the same a predetermined amount, for permitting the umbrella portion to be opened.
- the rib constructions of the umbrella are designed to carry sensing devices and to support the necessary connections thereto for observing conditions such as pressure, temperature and the like within the brain for conducting long-term study and treatment of hydrocephalus, brain cancer, stroke, and similar illnesses.
- FIG. 1 is a longitudinal view in cross-section of a modified ventricular end portion of a ventriculo-cardiac shunt constructed in accordance with the teachings of the present invention and showing the same in a closed position ready for insertion into the brain cavity.
- FIG. 2 is a similar cross-sectional view showing the umbrella portion of the device in an expanded condition, such as occurs following insertion of the device into the brain cavity, after the outer sleeve has been withdrawn a predetermined amount;
- FIG. 3 is an enlarged view of the embodiment shown in FIGS. 1 and 2 which illustrates a preferred arrangement of a condition-sensing device in one of the rib constructions of the umbrella portion of this embodiment;
- FIG. 4 is a diagrammatic representation of the application of the device in the establishment of a ventriculo-cardiac shunt.
- a ventriculo-cardiac shunt is generally indicated by the reference numeral 10.
- This ventricular end portion comprises a conventional elongated catheter member 12 of substantially tubular configuration which is provided with a plurality of radial, or lateral, passageways 14 near one end thereof which are adapted to form communication between the cerebral ventricles and the interior of the catheter, or main tube 12, for draining cerebrospinal fluid therefrom.
- a protective cover for the end of the main tube 12 having the passageways 14 therein is provided by a plurality of rib constructions 16 which are arranged about the periphery of the main tube 12 substantially aligned with respect to one another and in parallel relation to the longitudinal axis of the main tube 12.
- Each of the rib constructions 16 is secured at one end to the main tube 12 by any suitable means, and the other ends of the rib constructions extend beyond the end of the main tube 12 a predetermined distance.
- a cheesecloth, or gauze-like, material 18 porous to the cerebrospinal fluids is suitably attached to the rod-like rib constructions 16 in the same manner as the cloth material of an umbrella is attached to the flexible, supporting ribs thereof.
- An elongated sleeve 20 formed from a cylinder having a bore 22 and a counter-bore 24 is slidably disposed over the main tube 12 and-the rib constructions 16, with the main tube 12 being slidably received within the bore 22 and the end of the sleeve member 20 having the counter-bore 24 therein being slidably disposed over the rib constructions 16. As shown in FIG.
- one end of the sleeve member 20 extends beyond the end of the main catheter tube 12 substantially the same amount as do the rib constructions 16, and when the sleeve 20 is so fully extended, the ends of the rib constructions 16 abut the shoulder 26 formed between the bore 22 and the counter-bore 24 within the sleeve.
- Both the sleeve 20 and the main tube 12 are made of material compatible with body tissues such as rubber and" nylon, which preferably have the property of necessary yielding when being inserted into a body cavity.
- the rib constructions 16 are preconditioned to assume an angular, or conical, configuration relative to the main catheter tube 12, as illustrated in FIG. 2, whenever the sleeve member 20 is withdrawn or retracted, a predetermined distance over such rib constructions.
- the rib constructions 16 are made from firm, flexible material'preferably selected from such suitable plastic or metallic materials having the desired resilient characteristics.
- FIG. 3 Another important feature of the present invention, which is illustrated in FIG. 3, the is provision of means for sensing various conditions in the brain cavity such as, for example, pressure, temperature and the like, for
- sensing devices 28 which are disposed in cavities formed in the rib constructions 16. Connections to the sensing devices 28 are strung through slots, or channels, 32 and 34, respectively formed in the sleeve member 20 and the rib constructions 16.
- FIG. 4 is a simplified diagrammatic representation of the apparatus of the present invention in use. It should be appreciated that nothing shown therein is actually visible, the entire ventricular end portion 10 containing the main catheter tube 12 is connected through a trephined opening 36 in the skull to a source of cerebrospinal fluid such as, for example, a lateral ventricle.
- the other end of the device 10 is connected to a suitable tubular valving arrangement 38, of conventional design, permitting flow in one direction only, and this, in turn, is connected to an outlet tube 40 which is directed to the circulatory system, such as, for example by having its distal end inserted into and secured to the the internal jugular vein or heart.
- the ventricular end portion 10 is inserted through the opening 36 in the skull to a cerebral ventricle whereby it is connected to a source of cerebrospinal fluid, and thereafter the sleeve member 20 is withdrawn, or retracted, a predetermined distance, whereupon the rib construction 16 opens, or assumes the predetermined position illustrated in FIG. 2.
- the device 10 is now ready to receive cerebrospinal fluid through the cheesecloth covering 18 and through the passageways 14 for draining the same from the cerebral ventricles.
- This novel arrangement reduces shunt failure by preventing blockage or obstruction of the passageways 14 in the catheter tube 12 due to growth of brain tissue thereon, and hence cuts down on the number of surgical procedures which, understandably, ought to be avoided.
- the present invention also permits long term study and observation to readily be made when treating illnesses such as hydrocephalus, brain cancer, and stroke.
- ventriculo-cardiac shuts for draining cerebrospinal fluids from he cerebral ventricles to the jugular vein or to the heat in the treatment of hydrocephalus and similar conditions.
- a drainage tube having a closed distal end provided with lateral passageways adjacent thereto, the tube being of sufficient length so that its proximal end is adapted to extend beyond a body cavity into the atmosphere;
- porous means covering said distal end of said tube and said lateral passageways therein, said porous means including expansible means for providing an umbrella-like liner thereabout for permitting passage therethrough of fluid but preventing obstruction of said lateral passageways;
- said porous means comprises a plurality of elongate, resilient rib constructions normally disposed on said tube parallel to the longitudinal axis thereof and to each other when in said unexpanded state, with one end of each of said ribs being secured to the outer wall of said tube, said ribs being preconditioned to assume a funnel-shaped configuration when the unsecured ends thereof are released by said retaining means; and,
- said retaining means comprises a sleeve member slidably disposed over said drainage tube and said porous covering means
- said sleeve member having a stop therein for engaging said ribs upon being fully extended thereover, and
- said sleeve member upon withdrawal thereof at a predetermined distance substantially equal to the length of said unsecured portion of said ribs, permitting said porous covering means to assume said I funnel-shaped configuration.
- sensing means comprises sensing devices disposed in cavities formed in said ribs, and further including channels formed in said ribs and said sleeve member communicating with said cavities for receiving connecting leads to said sensing devices.
- catheter means for connecting the proximate end of said conduit to a source of cerebrospinal fluid
- porous means covering the end of said catheter means and including expansible means for providing an umbrella-like liner thereabout for permitting passage therethrough of said cerebrospinal fluid but preventing the obstruction of said catheter means;
- catheter means is substantially tubular having a closed distal end provided with a plurality of lateral passageways adjacent to said distal end;
- said porous means comprises a plurality of elongate rib constructions normally disposed on said catheter tube parallel to the longitudinal axis thereof and to each other when in said unexpanded state, with one end of each of said ribs being secured to the outer wall of said catheter tube on the side of said passageways opposite said distal end, said ribs being preconditioned to assume a conical configuration when the unsecured ends thereof are released by said retaining means; and,
- said means for normally retaining said porous means in an unexpanded state comprises a substantially tubularshaped sleeve member having a stop therein for engaging said ribs upon being fully extended thereover,
- said sensing means comprises sensing devices disposed in cavities formed in said ribs, and channels formed in said ribs and said sleeve member communicating with said cavities for receiving connecting leads for said sensing devices.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Ophthalmology & Optometry (AREA)
- Otolaryngology (AREA)
- External Artificial Organs (AREA)
Abstract
A modified ventricular end for a ventriculo-cardiac shunt used in the treatment of hydrocephalus and similar conditions is provided for removing fluids which accumulate in the cavity of the brain and must be drained to the heart. An umbrella-shaped cover protects an apertured end of the shunt for preventing the same from becoming attachad to the ventricular walls by growth of brain tissue thereon. The device, which is inserted into the brain in a closed position and is subsequently opened, has supporting rib structures which may carry various sensing elements for observing conditions in the brain.
Description
United States Patent Wortman et al.
1 51 Sept. 12, 1972 [54] DEVICE FOR DRAINING VENTRICULAR FLUID IN CASES OF HYDROCEPHALUS [72] Inventors: Donald E. Wortman, Rockville,
Md.; Lawrence J. Mervis, Milwaukee, Wis.
[73] Assignee: The United States of America as represented by the Secretary of the Army 22 Filed: Dec. 1,1970 21 Appl.No.: 94,069
[52] US. Cl. ..128/350 R [51] Int. Cl. ..A61m 27/00 [58] FieldofSeai-ch ..128/1 R,2l-l,2R,35 OR, 35 CV [56] References Cited UNITED STATES PATENTS 1,863,057 6/1932 Innes ..128/350 R 3,540,431 1 H1970 Mobin-Uddin ..128/1 R 3,565,056 2/1971 Statham ..128/2 R FOREIGN PATENTS OR APPLICATIONS 1,166,977 4/1964 Germany ..128/351 158,613 4/1957 Sweden ..128/2 R OTHER PUBLICATIONS Ellenwood, E. R. et al., Central-Body Temperature Apparatus," IBM Tech. Disclosure Bulletin, Vol. 11, N0. 11, Apr. 1969 Primary Examiner-Channing L. Pace Attorney-Harry M. Saragovitz, Edward J. Kelly, l-Ierbert Berl and Saul Elbaum [57] ABSTRACT A modified ventricular end for a ventriculo-cardiac shunt used in the treatment of hydrocephalus and similar conditions is provided for removing fluids which accumulate in the cavity of the brain and must be drained to the heart. An umbrella-shaped cover protects an apertured end of the shunt for preventing the same from becoming attachad to the ventricular walls by growth of brain tissue thereon. The device, which is inserted into the brain in a closed position and is subsequently opened, has supporting rib structures which may carry various sensing elements for observing conditions in the brain.
10 Claims, 4 Drawing Figures P'A'IENTEDSEP 12 m2 3.690.323
FIG 4 DONALD E. w R Aw'ENTOR LJ- MERVIS BY W' i ATTORNEYS DEVICE FOR DRAINING VENTRICULAR FLUID IN CASES OF HYDROCEPHALUS RIGHTS OF GOVERNMENT The invention described herein may be manufactured, used, and licensed by or for The United States Government for governmental purposes without the payment to us of any royalty thereon.
BACKGROUND OF THE INVENTION The invention relates generally to surgical devices for controlling the drainage of fluids between different portions of the body of a patient, and more particularly, to improvements in ventriculo-cardiac shunts for draining cerebrospinal fluid from the cerebral ventricles to other areas of the body in the treatment of hydrocephalus and similar conditions in which there is difficulty in the free circulation and absorption of cerebrospinal fluid.
The practice of treating communicating or obstructive hydrocephalus by establishing communication between the cerebrospinal fluid pathways and the vascular system is well known and several mechanical devices are presently available for draining away the cerebrospinal fluid which accumulates within the skull and exerts pressure therein. Once inserted, it is desirable that these devices permanently remain in the patient, to be replaced if some maloperation occurs. These devices normally include a closed-end drainage tube of quite small diameter which is inserted through an opening in the skull into the cranial cavity of the head, or more specifically, into a lateral cerebral ventricle of the patient, and which is provided with a plurality of small apertures in the wall thereof near the distal end of the tube in the brain of the patient for permitting passage therethrough of fluids collected from the'cerebral ventricles to the bloodstream. It has been found, however, that cerebral tissue ordinarily collects, or grows, about the end of these devices, or shunts, after they have been in use only a reasonably short period of time, causing the same to become attached to the ventricular or other membrane walls and thereby obstructing the normal flow of fluids thereinto. As a result, the patient often exhibits symptoms of intracranial hypertension (shunt malfunction). When this occurs, or, if the shunt fails for any other reason, it is necessary to replace the shunt, and this requires additional surgical procedures which could be of some danger to a patient.
SUMMARY OF THE INVENTION Accordingly, it is an object of this invention to provide an improved ventricular end portion for a ventriculo-cardiac shunt which is simple in construction and highly reliable and can be utilized with the maxim um degree of safety to the patient.
Another object of this invention is to provide a device for draining cerebral-spinal fluid from the cerebral ventricles into other areas of the body for cases of hydrocephalus and similar conditions which does not tend to become obstructed with cerebral debris or tissue growths.
Still another object of this invention is to provide a ventriculo-cardiac shunt for draining cerebrospinal fluid having an improved ventricular end portion which is not susceptible to becoming blocked or obstructed by brain tissue growth thereon and which is capable of supporting sensing devices for detecting various environmental conditions in the brain to assist in the treatment of such illnesses as hydrocephalus, brain cancer, and stroke.
The foregoing and other objects are attained by a ventriculo-cardiac shunt having a tubular end portion which is provided with a plurality of apertures for receiving fluid which may have accumulated in the regions of the brain cavity and which is enclosed within a novel umbrella-type cover slidably disposed thereover that is normally closed during insertion of the same into the brain cavity and may be readily opened once in place for supporting the tubular end portion in a standup relation from the ventricular walls. The umbrella includes a gauze-like or cheesecloth type material porous to the cerebrospinal fluid and suitably attached to or covering a plurality of elongate rib constructions of a firm elastic material which are preconditioned as a whole to form an open or conical configuration when supported or retained at one end thereof and released at the other end for permitting the same to expand, or open. A tubular sleeve which is slidably disposed over the tubular end portion and the umbrella portion of the device is provided for the purpose of normally maintaining the umbrella in a closed position and, whenever desired, upon withdrawal of the same a predetermined amount, for permitting the umbrella portion to be opened. The rib constructions of the umbrella are designed to carry sensing devices and to support the necessary connections thereto for observing conditions such as pressure, temperature and the like within the brain for conducting long-term study and treatment of hydrocephalus, brain cancer, stroke, and similar illnesses.
BRIEF DESCRIPTION OF THE DRAWINGS Other objects and many of the attendant features and advantages of the present invention will be more readily appreciated as the same becomes better understood from the following detailed description when considered in connection with the accompanying drawings in which like reference numerals indicate like or corresponding parts throughout the several views thereof and wherein:
FIG. 1 is a longitudinal view in cross-section of a modified ventricular end portion of a ventriculo-cardiac shunt constructed in accordance with the teachings of the present invention and showing the same in a closed position ready for insertion into the brain cavity.
FIG. 2 is a similar cross-sectional view showing the umbrella portion of the device in an expanded condition, such as occurs following insertion of the device into the brain cavity, after the outer sleeve has been withdrawn a predetermined amount;
FIG. 3 is an enlarged view of the embodiment shown in FIGS. 1 and 2 which illustrates a preferred arrangement of a condition-sensing device in one of the rib constructions of the umbrella portion of this embodiment; and,
FIG. 4 is a diagrammatic representation of the application of the device in the establishment of a ventriculo-cardiac shunt.
DESCRIPTION OF AN ILLUSTRATED EMBODIMENT Referring now to the drawings, and more particularly, to FIGS. 1 and 2 thereof, the end portion of a ventriculo-cardiac shunt is generally indicated by the reference numeral 10. This ventricular end portion comprises a conventional elongated catheter member 12 of substantially tubular configuration which is provided with a plurality of radial, or lateral, passageways 14 near one end thereof which are adapted to form communication between the cerebral ventricles and the interior of the catheter, or main tube 12, for draining cerebrospinal fluid therefrom.
A protective cover for the end of the main tube 12 having the passageways 14 therein is provided by a plurality of rib constructions 16 which are arranged about the periphery of the main tube 12 substantially aligned with respect to one another and in parallel relation to the longitudinal axis of the main tube 12. Each of the rib constructions 16 is secured at one end to the main tube 12 by any suitable means, and the other ends of the rib constructions extend beyond the end of the main tube 12 a predetermined distance. A cheesecloth, or gauze-like, material 18 porous to the cerebrospinal fluids is suitably attached to the rod-like rib constructions 16 in the same manner as the cloth material of an umbrella is attached to the flexible, supporting ribs thereof.
An elongated sleeve 20 formed from a cylinder having a bore 22 and a counter-bore 24 is slidably disposed over the main tube 12 and-the rib constructions 16, with the main tube 12 being slidably received within the bore 22 and the end of the sleeve member 20 having the counter-bore 24 therein being slidably disposed over the rib constructions 16. As shown in FIG. 1, with the device in the normal, inoperative condition, ready for insertion into the brain cavity, one end of the sleeve member 20 extends beyond the end of the main catheter tube 12 substantially the same amount as do the rib constructions 16, and when the sleeve 20 is so fully extended, the ends of the rib constructions 16 abut the shoulder 26 formed between the bore 22 and the counter-bore 24 within the sleeve.
Both the sleeve 20 and the main tube 12 are made of material compatible with body tissues such as rubber and" nylon, which preferably have the property of necessary yielding when being inserted into a body cavity. The rib constructions 16 are preconditioned to assume an angular, or conical, configuration relative to the main catheter tube 12, as illustrated in FIG. 2, whenever the sleeve member 20 is withdrawn or retracted, a predetermined distance over such rib constructions. The rib constructions 16 are made from firm, flexible material'preferably selected from such suitable plastic or metallic materials having the desired resilient characteristics. It is contemplated also that some of the new materials having plastic memory characteristics so as to retain form and dimensions under normal temperature conditions but which, upon heating to a critical temperature, change their form and return to their pretreatment form and dimension, may be readily adapted for constructing the ribs 16 herein.
Another important feature of the present invention, which is illustrated in FIG. 3, the is provision of means for sensing various conditions in the brain cavity such as, for example, pressure, temperature and the like, for
the purpose of observing the same and thereby-detecting the presence of infection, brain damage, or the like. This is permitted by the provision of a plurality of sensing devices 28 which are disposed in cavities formed in the rib constructions 16. Connections to the sensing devices 28 are strung through slots, or channels, 32 and 34, respectively formed in the sleeve member 20 and the rib constructions 16.
FIG. 4 is a simplified diagrammatic representation of the apparatus of the present invention in use. It should be appreciated that nothing shown therein is actually visible, the entire ventricular end portion 10 containing the main catheter tube 12 is connected through a trephined opening 36 in the skull to a source of cerebrospinal fluid such as, for example, a lateral ventricle. The other end of the device 10 is connected to a suitable tubular valving arrangement 38, of conventional design, permitting flow in one direction only, and this, in turn, is connected to an outlet tube 40 which is directed to the circulatory system, such as, for example by having its distal end inserted into and secured to the the internal jugular vein or heart.
In the use of the device, therefore, the ventricular end portion 10 is inserted through the opening 36 in the skull to a cerebral ventricle whereby it is connected to a source of cerebrospinal fluid, and thereafter the sleeve member 20 is withdrawn, or retracted, a predetermined distance, whereupon the rib construction 16 opens, or assumes the predetermined position illustrated in FIG. 2. The device 10 is now ready to receive cerebrospinal fluid through the cheesecloth covering 18 and through the passageways 14 for draining the same from the cerebral ventricles. This novel arrangement reduces shunt failure by preventing blockage or obstruction of the passageways 14 in the catheter tube 12 due to growth of brain tissue thereon, and hence cuts down on the number of surgical procedures which, understandably, ought to be avoided. Through the sensing devices 28, the present invention also permits long term study and observation to readily be made when treating illnesses such as hydrocephalus, brain cancer, and stroke.
It will be seen from the foregoing description that there has been provided a number of new and useful improvements in ventriculo-cardiac shuts for draining cerebrospinal fluids from he cerebral ventricles to the jugular vein or to the heat in the treatment of hydrocephalus and similar conditions.
We wish it to be understood that we do not desire to be limited to the exact details of construction shown and described, for obvious modifications will occur to a person skilled in the art.
What is claimed is:
l. A device suitable for placement in a body cavity for draining fluids therefrom, comprising:
a drainage tube having a closed distal end provided with lateral passageways adjacent thereto, the tube being of sufficient length so that its proximal end is adapted to extend beyond a body cavity into the atmosphere;
porous means covering said distal end of said tube and said lateral passageways therein, said porous means including expansible means for providing an umbrella-like liner thereabout for permitting passage therethrough of fluid but preventing obstruction of said lateral passageways; and,
means for normally retaining said porous means in an unexpanded state during insertion of said drainage tube into a body cavity.
2. The device set forth in claim 1, further comprising means supported on said porous means for sensing predetermined conditions when inserted into a body cavity.
3. The device set forth in claim 2, wherein said porous means comprises a plurality of elongate, resilient rib constructions normally disposed on said tube parallel to the longitudinal axis thereof and to each other when in said unexpanded state, with one end of each of said ribs being secured to the outer wall of said tube, said ribs being preconditioned to assume a funnel-shaped configuration when the unsecured ends thereof are released by said retaining means; and,
a porous material covering the same and attached thereto at spaced intervals for permitting said ribs to expand into said substantially funnel-shaped configuration.
4. The device set forth in claim 3, wherein said retaining means comprises a sleeve member slidably disposed over said drainage tube and said porous covering means,
said sleeve member having a stop therein for engaging said ribs upon being fully extended thereover, and,
said sleeve member, upon withdrawal thereof at a predetermined distance substantially equal to the length of said unsecured portion of said ribs, permitting said porous covering means to assume said I funnel-shaped configuration.
5. The device set forth in claim 4, wherein said sensing means comprises sensing devices disposed in cavities formed in said ribs, and further including channels formed in said ribs and said sleeve member communicating with said cavities for receiving connecting leads to said sensing devices.
6. The device set forth in claim 5, wherein said sensing devices are responsive to pressure.
7. The device set forth in claim 5 wherein said sensing devices are responsive to temperature.
8. In an apparatus for draining cerebrospinal fluid into the circulatory system, the combination of a resilient conduit adapted to be connected to said circulatory system;
catheter means for connecting the proximate end of said conduit to a source of cerebrospinal fluid;
porous means covering the end of said catheter means and including expansible means for providing an umbrella-like liner thereabout for permitting passage therethrough of said cerebrospinal fluid but preventing the obstruction of said catheter means;
means for normally retaining said porous means in an unexpanded state during insertion into said source of cerebrospinal fluid; and,
means supported on said expandible porous means for sensing predetermined conditions within said source of cerebrospinal fluid.
9. The combination set forth in claim 8, wherein said catheter means is substantially tubular having a closed distal end provided with a plurality of lateral passageways adjacent to said distal end; and,
said porous means comprises a plurality of elongate rib constructions normally disposed on said catheter tube parallel to the longitudinal axis thereof and to each other when in said unexpanded state, with one end of each of said ribs being secured to the outer wall of said catheter tube on the side of said passageways opposite said distal end, said ribs being preconditioned to assume a conical configuration when the unsecured ends thereof are released by said retaining means; and,
a porous material covering said rib constructions and attached thereto at spaced intervals for permitting the same to expand to said conical configuration while providing a tight porous cover thereabout.
10. The combination set forth in claim 9, wherein said means for normally retaining said porous means in an unexpanded state comprises a substantially tubularshaped sleeve member having a stop therein for engaging said ribs upon being fully extended thereover,
said sleeve member, upon withdrawal thereof a predetermined distance substantially equal to the length of said unsecured portion of said ribs, permitting the expansion of said porous covering means, and,
said sensing means comprises sensing devices disposed in cavities formed in said ribs, and channels formed in said ribs and said sleeve member communicating with said cavities for receiving connecting leads for said sensing devices.
Claims (10)
1. A device suitable for placement in a body cavity for draining fluids therefrom, comprising: a drainage tube having a closed distal end provided with lateral passageways adjacent thereto, the tube being of sufficient length so that its proximal end is adapted to extend beyond a body cavity into the atmosphere; porous means covering said distal end of said tube and said lateral passageways therein, said porous means including expansible means for providing an umbrella-like liner thereabout for permitting passage therethrough of fluid but preventing obstruction of said lateral passageways; and, means for normally retaining said porous means in an unexpanded state during insertion of said drainage tube into a body cavity.
2. The device set forth in claim 1, further comprising means supported on said porous means for sensing predetermined conditions when inserted into a body cavity.
3. The device set forth in claim 2, wherein said porous means comprises a plurality of elongate, resilient rib constructions normally disposed on said tube parallel to the longitudinal axis thereof and to each other when in said unexpanded state, with one end of each of said ribs being secured to the outer wall of said tube, said ribs being preconditioned to assume a funnel-shaped configuration when the unsecured ends thereof are released by said retaining means; and, a porous material covering the same and attached thereto at spaced intervals for permitting said ribs to expand into said substantially funnel-shaped configuration.
4. The device set forth in claim 3, wherein said retaining means comprises a sleeve member slidably disposed over said drainage tube and said porous covering means, said sleeve member having a stop therein for engaging said ribs upon being fully extended thereover, and, said sleeve member, upon withdrawal thereof at a predetermined distance substantially equal to the length of said unsecured portion of said ribs, permitting said porous covering means to assume said funnel-shaped configuration.
5. The device set forth in claim 4, wherein said sensing means comprises sensing devices disposed in cavities formed in said ribs, and further including channels formed in said ribs and said sleeve member communicating with said cavities for receiving connecting leads to said sensing devices.
6. The device set forth in claim 5, wherein said sensing devices are responsive to pressure.
7. The device set forth in claim 5 wherein said sensing devices are responsive to temperature.
8. In an apparatus for draining cerebrospinal fluid into the circulatory system, the combination of a resilient conduit adapted to be connected to said circulatory system; catheter means for connecting the proximate end of said conduit to a source of cerebrospinal fluid; porous means covering the end of said catheter means and including expansible means for providing an umbrella-like liner thereabout for permitting passage therethrough of said cerebrospinal fluid but preventing the obstruction of said catheter means; means for normally retaining said porous means in an unexpanded state during insertion into said source of cerebrospinal fluid; and, means supported on said expandible porous means for sensing predetermined conditions within said source of cerebrospinal fluid.
9. The combination set forth in claim 8, wherein said catheter means is substantially tubular having a closed distal end provided with a plurality of lateral passageways adjacent to said distal end; and, said porous means comprises a plurality of elongate rib constructions normally disposed on said catheter tube parallel to the longitudinal axis thereof and to each other when in said unexpanded state, with one end of each of said ribs being secured to the outer wall of said catheter tube on the side of said passageways opposite said distal end, said ribs being preconditioned to assume a conical configuration when the unsecured ends thereof are released by said retaining means; and, a porous material covering said rib constructions and attached thereto at spaced intervals for permitting the same to expand to said conical configuration while providing a tight porous cover thereabout.
10. The combination set forth in claim 9, wherein said means for normally retaining said porous means in an unexpanded state comprises a substantially tubular-shaped sleeve member having a stop therein for engaging said ribs upon being fully extended thereover, said sleeve member, upon withdrawal thereof a predetermined distance substantially equal to the length of said unsecured portion of said ribs, permitting the expansion of said porous covering means, and, said sensing means comprises sensing devices disposed in cavities formed in said ribs, and channels formed in said ribs and said sleeve member communicating with said cavities for receiving connecting leads for said sensing devices.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9406970A | 1970-12-01 | 1970-12-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3690323A true US3690323A (en) | 1972-09-12 |
Family
ID=22242685
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US94069A Expired - Lifetime US3690323A (en) | 1970-12-01 | 1970-12-01 | Device for draining ventricular fluid in cases of hydrocephalus |
Country Status (1)
Country | Link |
---|---|
US (1) | US3690323A (en) |
Cited By (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3831587A (en) * | 1973-02-08 | 1974-08-27 | Mc Anally R | Multipurpose vaginal and cervical device |
FR2512341A1 (en) * | 1981-09-04 | 1983-03-11 | Murray William | SURGICAL CEMENT INJECTION TUBE FOR BONE |
US4378797A (en) * | 1980-04-14 | 1983-04-05 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445887A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446154A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445514A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446155A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445886A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445500A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445888A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4451251A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4450841A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4601724A (en) * | 1984-05-29 | 1986-07-22 | Cordis Corporation | Manufacture of tubing assembly for drainage catheter |
US4610661A (en) * | 1984-06-13 | 1986-09-09 | Possis Medical, Incorporated | Perfusion device |
US4625722A (en) * | 1985-05-03 | 1986-12-02 | Murray William M | Bone cement system and method |
US4655745A (en) * | 1985-07-29 | 1987-04-07 | Corbett Joseph E | Ventricular catheter |
US4657532A (en) * | 1985-07-19 | 1987-04-14 | Thomas Jefferson University | Intra-peritoneal perfusion of oxygenated fluorocarbon |
US4686085A (en) * | 1980-04-14 | 1987-08-11 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4692140A (en) * | 1985-07-01 | 1987-09-08 | Snyder Laboratories, Inc. | Lavage/suction tip with dual splash shield |
US4741730A (en) * | 1982-10-04 | 1988-05-03 | American Hospital Supply | Hydrocephalus shunt with in-line filter |
US4758431A (en) * | 1980-04-14 | 1988-07-19 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4795423A (en) * | 1980-04-14 | 1989-01-03 | Thomas Jefferson University | Oxygenated perfluorinated perfusion of the ocular globe to treat ischemic retinopathy |
US4830849A (en) * | 1980-04-14 | 1989-05-16 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4840617A (en) * | 1980-04-14 | 1989-06-20 | Thomas Jefferson University | Cerebral and lumbar perfusion catheterization apparatus for use in treating hypoxic/ischemic neurologic tissue |
US4861331A (en) * | 1988-03-24 | 1989-08-29 | Pudenz-Schulte Medical Research Corp. | Implantable shunt system and method of assembly |
US4867740A (en) * | 1988-03-24 | 1989-09-19 | Pudenz-Schulte Medical Research Corp. | Multiple-membrane flow control valve and implantable shunt system |
WO1989009634A1 (en) * | 1988-04-13 | 1989-10-19 | Theodor Greive | Catheter with distally moulded-on catheter point and securing fibre |
WO1990000911A1 (en) * | 1988-07-26 | 1990-02-08 | Automedix Sciences, Inc. | Lymph access catheters and methods of administration |
US5176626A (en) * | 1992-01-15 | 1993-01-05 | Wilson-Cook Medical, Inc. | Indwelling stent |
US5728061A (en) * | 1988-10-07 | 1998-03-17 | Ahmed; Abdul Mateen | Device and method for treating hydrocephalus |
US6193682B1 (en) | 1998-03-16 | 2001-02-27 | Abdul Mateen Ahmed | Low profile neonatal hydrocephalus device and methods |
US20040236309A1 (en) * | 2003-05-19 | 2004-11-25 | Benson Yang | Mesh ventricular catheter with antithrombogenic coating |
US20050113802A1 (en) * | 2001-03-01 | 2005-05-26 | Watson David A. | Process for creating an ingrowth preventing indwelling catheter assembly |
US20060074388A1 (en) * | 2004-09-30 | 2006-04-06 | Alan Dextradeur | Fluid management flow implants of improved occlusion resistance |
WO2006050225A2 (en) * | 2004-10-28 | 2006-05-11 | Strategic Technology Assessment Group | Apparatus and methods for performing brain surgery |
US20070129663A1 (en) * | 2005-12-01 | 2007-06-07 | Medtronic, Inc. | Implantable cerebrospinal fluid flow device and method of controlling flow of cerebrospinal fluid |
US20070197962A1 (en) * | 2006-02-22 | 2007-08-23 | Masuo Morikawa | Catheter for removing foreign substance in blood vessel |
US20080109026A1 (en) * | 2004-10-28 | 2008-05-08 | Strategic Technology Assessment Group | Apparatus and Methods for Performing Brain Surgery |
EA010844B1 (en) * | 2007-02-21 | 2008-12-30 | Болот Усенович АСАНОВ | Device for aspiration method of detection and catheterization a mouth of large lymphatic basins |
US20090048622A1 (en) * | 2004-10-28 | 2009-02-19 | Wilson Jeffrey A | Apparatus and methods for performing brain surgery |
US9161820B2 (en) | 2004-10-28 | 2015-10-20 | Nico Corporation | Surgical access assembly and method of using same |
US9186175B2 (en) | 2004-10-28 | 2015-11-17 | Nico Corporation | Surgical access assembly and method of using same |
US9265523B2 (en) | 2011-10-24 | 2016-02-23 | Nico Corporation | Surgical access system with navigation element and method of using same |
US9307969B2 (en) | 2005-06-17 | 2016-04-12 | Vycor Medical, Inc. | Tissue retractor apparatus and methods |
US9364647B1 (en) | 2014-07-30 | 2016-06-14 | University Of South Florida | Shunt catheter system |
US9387010B2 (en) | 2004-10-28 | 2016-07-12 | Nico Corporation | Surgical access assembly and method of using same |
US9694166B2 (en) | 2002-03-26 | 2017-07-04 | Medtronics Ps Medical, Inc. | Method of draining cerebrospinal fluid |
US9737287B2 (en) | 2014-05-13 | 2017-08-22 | Vycor Medical, Inc. | Guidance system mounts for surgical introducers |
US9757147B2 (en) | 2012-04-11 | 2017-09-12 | Nico Corporation | Surgical access system with navigation element and method of using same |
US9770261B2 (en) | 2004-10-28 | 2017-09-26 | Nico Corporation | Surgical access assembly and method of using same |
US10022520B2 (en) | 2012-12-17 | 2018-07-17 | Nico Corporation | Surgical access system |
US10357280B2 (en) | 2015-04-30 | 2019-07-23 | Nico Corporation | Navigating introducer for tissue access system |
US10376258B2 (en) | 2016-11-07 | 2019-08-13 | Vycor Medical, Inc. | Surgical introducer with guidance system receptacle |
US10456061B2 (en) | 2014-11-12 | 2019-10-29 | Nico Corporation | Holding arrangement for a surgical access system |
US10543016B2 (en) | 2016-11-07 | 2020-01-28 | Vycor Medical, Inc. | Surgical introducer with guidance system receptacle |
US10543057B2 (en) | 2016-03-15 | 2020-01-28 | Nico Corporation | Selectively lockable holding arrangement for a surgical access system |
US10765450B2 (en) | 2016-03-15 | 2020-09-08 | Nico Corporation | Selectively lockable holding arrangement for a surgical access system |
USD916280S1 (en) | 2015-10-16 | 2021-04-13 | Angiodynamics, Inc. | Reinforcement arms and collar for a cannula tip |
USD916281S1 (en) | 2016-10-17 | 2021-04-13 | Angiodynamics, Inc. | Reinforcement arms and collar for a cannula tip |
US11413066B2 (en) | 2016-03-15 | 2022-08-16 | Nico Corporation | Selectively lockable holding arrangement for a surgical access system |
USD972723S1 (en) | 2021-03-17 | 2022-12-13 | Angiodynamics, Inc. | Reinforcement arms and collar for an expandable cannula tip |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1863057A (en) * | 1930-03-03 | 1932-06-14 | George A Innes | Surgical drain |
DE1166977B (en) * | 1959-11-07 | 1964-04-02 | Auergesellschaft Gmbh | Device for connecting ventilation, anesthesia and similar devices to the patient's airways |
US3540431A (en) * | 1968-04-04 | 1970-11-17 | Kazi Mobin Uddin | Collapsible filter for fluid flowing in closed passageway |
US3565056A (en) * | 1968-02-29 | 1971-02-23 | Statham Instrument Inc | Body fluid pressure measuring apparatus |
-
1970
- 1970-12-01 US US94069A patent/US3690323A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1863057A (en) * | 1930-03-03 | 1932-06-14 | George A Innes | Surgical drain |
DE1166977B (en) * | 1959-11-07 | 1964-04-02 | Auergesellschaft Gmbh | Device for connecting ventilation, anesthesia and similar devices to the patient's airways |
US3565056A (en) * | 1968-02-29 | 1971-02-23 | Statham Instrument Inc | Body fluid pressure measuring apparatus |
US3540431A (en) * | 1968-04-04 | 1970-11-17 | Kazi Mobin Uddin | Collapsible filter for fluid flowing in closed passageway |
Non-Patent Citations (1)
Title |
---|
Ellenwood, E. R. et al., Central Body Temperature Apparatus, IBM Tech. Disclosure Bulletin, Vol. 11, No. 11, Apr. 1969 * |
Cited By (101)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3831587A (en) * | 1973-02-08 | 1974-08-27 | Mc Anally R | Multipurpose vaginal and cervical device |
US4378797A (en) * | 1980-04-14 | 1983-04-05 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4840617A (en) * | 1980-04-14 | 1989-06-20 | Thomas Jefferson University | Cerebral and lumbar perfusion catheterization apparatus for use in treating hypoxic/ischemic neurologic tissue |
US4830849A (en) * | 1980-04-14 | 1989-05-16 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445514A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4795423A (en) * | 1980-04-14 | 1989-01-03 | Thomas Jefferson University | Oxygenated perfluorinated perfusion of the ocular globe to treat ischemic retinopathy |
US4445886A (en) * | 1980-04-14 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4758431A (en) * | 1980-04-14 | 1988-07-19 | Thomas Jefferson University | Extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4686085A (en) * | 1980-04-14 | 1987-08-11 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4466435A (en) * | 1981-09-04 | 1984-08-21 | Murray William M | Bone cement nozzle and method |
FR2512341A1 (en) * | 1981-09-04 | 1983-03-11 | Murray William | SURGICAL CEMENT INJECTION TUBE FOR BONE |
US4445500A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445887A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446154A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4450841A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4446155A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4451251A (en) * | 1982-03-03 | 1984-05-29 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4445888A (en) * | 1982-03-03 | 1984-05-01 | Thomas Jefferson University | Stroke treatment utilizing extravascular circulation of oxygenated synthetic nutrients to treat tissue hypoxic and ischemic disorders |
US4741730A (en) * | 1982-10-04 | 1988-05-03 | American Hospital Supply | Hydrocephalus shunt with in-line filter |
US4601724A (en) * | 1984-05-29 | 1986-07-22 | Cordis Corporation | Manufacture of tubing assembly for drainage catheter |
US4610661A (en) * | 1984-06-13 | 1986-09-09 | Possis Medical, Incorporated | Perfusion device |
US4625722A (en) * | 1985-05-03 | 1986-12-02 | Murray William M | Bone cement system and method |
US4627434A (en) * | 1985-05-03 | 1986-12-09 | Murray William M | Bone cement system and method |
US4692140A (en) * | 1985-07-01 | 1987-09-08 | Snyder Laboratories, Inc. | Lavage/suction tip with dual splash shield |
US4657532A (en) * | 1985-07-19 | 1987-04-14 | Thomas Jefferson University | Intra-peritoneal perfusion of oxygenated fluorocarbon |
US4655745A (en) * | 1985-07-29 | 1987-04-07 | Corbett Joseph E | Ventricular catheter |
US4861331A (en) * | 1988-03-24 | 1989-08-29 | Pudenz-Schulte Medical Research Corp. | Implantable shunt system and method of assembly |
US4867740A (en) * | 1988-03-24 | 1989-09-19 | Pudenz-Schulte Medical Research Corp. | Multiple-membrane flow control valve and implantable shunt system |
WO1989009634A1 (en) * | 1988-04-13 | 1989-10-19 | Theodor Greive | Catheter with distally moulded-on catheter point and securing fibre |
WO1990000911A1 (en) * | 1988-07-26 | 1990-02-08 | Automedix Sciences, Inc. | Lymph access catheters and methods of administration |
US4957484A (en) * | 1988-07-26 | 1990-09-18 | Automedix Sciences, Inc. | Lymph access catheters and methods of administration |
US5728061A (en) * | 1988-10-07 | 1998-03-17 | Ahmed; Abdul Mateen | Device and method for treating hydrocephalus |
US5176626A (en) * | 1992-01-15 | 1993-01-05 | Wilson-Cook Medical, Inc. | Indwelling stent |
USRE35849E (en) * | 1992-01-15 | 1998-07-14 | Wilson-Cook Medical, Inc. | Indwelling stent |
US6193682B1 (en) | 1998-03-16 | 2001-02-27 | Abdul Mateen Ahmed | Low profile neonatal hydrocephalus device and methods |
US20100282394A1 (en) * | 2001-03-01 | 2010-11-11 | Watson David A | Process for creating an ingrowth preventing indwelling catheter assembly |
US20100179471A1 (en) * | 2001-03-01 | 2010-07-15 | Watson David A | Ingrowth preventing indwelling catheter assembly |
US20050113802A1 (en) * | 2001-03-01 | 2005-05-26 | Watson David A. | Process for creating an ingrowth preventing indwelling catheter assembly |
US8376980B2 (en) | 2001-03-01 | 2013-02-19 | David A. Watson | Ingrowth preventing indwelling catheter assembly |
US7763142B2 (en) | 2001-03-01 | 2010-07-27 | Watson David A | Process for creating an ingrowth preventing indwelling catheter assembly |
US9694166B2 (en) | 2002-03-26 | 2017-07-04 | Medtronics Ps Medical, Inc. | Method of draining cerebrospinal fluid |
US20040236309A1 (en) * | 2003-05-19 | 2004-11-25 | Benson Yang | Mesh ventricular catheter with antithrombogenic coating |
US20060074388A1 (en) * | 2004-09-30 | 2006-04-06 | Alan Dextradeur | Fluid management flow implants of improved occlusion resistance |
US8221392B2 (en) | 2004-09-30 | 2012-07-17 | Codman & Shurtleff, Inc. | Fluid management flow implants of improved occlusion resistance |
US7976517B2 (en) | 2004-09-30 | 2011-07-12 | Codman & Shurtleff, Inc. | Fluid management flow implants of improved occlusion resistance |
US20080214982A1 (en) * | 2004-09-30 | 2008-09-04 | Alan Dextradeur | Fluid management flow implants of improved occlusion resistance |
US20080109026A1 (en) * | 2004-10-28 | 2008-05-08 | Strategic Technology Assessment Group | Apparatus and Methods for Performing Brain Surgery |
US9186175B2 (en) | 2004-10-28 | 2015-11-17 | Nico Corporation | Surgical access assembly and method of using same |
US11464539B2 (en) | 2004-10-28 | 2022-10-11 | Nico Corporation | Surgical access assembly and method of using same |
US11864793B2 (en) | 2004-10-28 | 2024-01-09 | Nico Corporation | Surgical access assembly and method of using same |
US11969187B2 (en) | 2004-10-28 | 2024-04-30 | Nico Corporation | Surgical access assembly and method of using same |
WO2006050225A3 (en) * | 2004-10-28 | 2006-09-08 | Strategic Technology Assessmen | Apparatus and methods for performing brain surgery |
WO2006050047A3 (en) * | 2004-10-28 | 2006-08-24 | Jeffrey A Wilson | Apparatus and methods for performing brain surgery |
US11412923B2 (en) | 2004-10-28 | 2022-08-16 | Nico Corporation | Surgical access assembly and method of using same |
US10449340B2 (en) | 2004-10-28 | 2019-10-22 | Nico Corporation | Surgical access assembly and method of using same |
WO2006050047A2 (en) * | 2004-10-28 | 2006-05-11 | Wilson Jeffrey A | Apparatus and methods for performing brain surgery |
US9161820B2 (en) | 2004-10-28 | 2015-10-20 | Nico Corporation | Surgical access assembly and method of using same |
US20090048622A1 (en) * | 2004-10-28 | 2009-02-19 | Wilson Jeffrey A | Apparatus and methods for performing brain surgery |
US9216015B2 (en) | 2004-10-28 | 2015-12-22 | Vycor Medical, Inc. | Apparatus and methods for performing brain surgery |
US10143366B2 (en) | 2004-10-28 | 2018-12-04 | Nico Corporation | Surgical access assembly and method of using same |
US9968414B2 (en) | 2004-10-28 | 2018-05-15 | Vycor Medical, Inc. | Apparatus and methods for performing brain surgery |
US9968415B2 (en) | 2004-10-28 | 2018-05-15 | Vycor Medical, Inc. | Apparatus and methods for performing brain surgery |
US9387010B2 (en) | 2004-10-28 | 2016-07-12 | Nico Corporation | Surgical access assembly and method of using same |
US9386974B2 (en) | 2004-10-28 | 2016-07-12 | Vycor Medical, Inc. | Apparatus and methods for performing brain surgery |
US9770261B2 (en) | 2004-10-28 | 2017-09-26 | Nico Corporation | Surgical access assembly and method of using same |
US9579121B2 (en) | 2004-10-28 | 2017-02-28 | Nico Corporation | Holding arrangement for a surgical access system |
US9622777B2 (en) | 2004-10-28 | 2017-04-18 | Nico Corporation | Surgical access assembly and method of using same |
WO2006050225A2 (en) * | 2004-10-28 | 2006-05-11 | Strategic Technology Assessment Group | Apparatus and methods for performing brain surgery |
US9675331B2 (en) | 2005-06-17 | 2017-06-13 | Vycor Medical, Inc. | Tissue retractor apparatus and methods |
US9566052B2 (en) | 2005-06-17 | 2017-02-14 | Vycor Medical, Inc. | Tissue retractor apparatus and methods |
US9782157B2 (en) | 2005-06-17 | 2017-10-10 | Vycor Medical, Inc. | Tissue retractor apparatus and methods |
US9307969B2 (en) | 2005-06-17 | 2016-04-12 | Vycor Medical, Inc. | Tissue retractor apparatus and methods |
US8333728B2 (en) * | 2005-12-01 | 2012-12-18 | Medtronic, Inc. | Implantable cerebrospinal fluid flow device and method of controlling flow of cerebrospinal fluid |
US20070129663A1 (en) * | 2005-12-01 | 2007-06-07 | Medtronic, Inc. | Implantable cerebrospinal fluid flow device and method of controlling flow of cerebrospinal fluid |
US20070197962A1 (en) * | 2006-02-22 | 2007-08-23 | Masuo Morikawa | Catheter for removing foreign substance in blood vessel |
EA010844B1 (en) * | 2007-02-21 | 2008-12-30 | Болот Усенович АСАНОВ | Device for aspiration method of detection and catheterization a mouth of large lymphatic basins |
CN101297987B (en) * | 2007-02-21 | 2012-09-05 | 博劳特·乌塞诺夫斯基·阿萨诺夫 | Body fluid suction and large lymph collector vessel mouth location device |
US11284917B2 (en) | 2011-10-24 | 2022-03-29 | Nico Corporation | Surgical access assembly and method of using same |
US10307183B2 (en) | 2011-10-24 | 2019-06-04 | Nico Corporation | Surgical access system with navigation element and method of using same |
US9265523B2 (en) | 2011-10-24 | 2016-02-23 | Nico Corporation | Surgical access system with navigation element and method of using same |
US9757147B2 (en) | 2012-04-11 | 2017-09-12 | Nico Corporation | Surgical access system with navigation element and method of using same |
US10022520B2 (en) | 2012-12-17 | 2018-07-17 | Nico Corporation | Surgical access system |
US10842970B2 (en) | 2012-12-17 | 2020-11-24 | Nico Corporation | Surgical access system |
US11116487B2 (en) | 2014-05-13 | 2021-09-14 | Vycor Medical, Inc. | Guidance system mounts for surgical introducers |
US10327748B2 (en) | 2014-05-13 | 2019-06-25 | Vycor Medical, Inc. | Guidance system mounts for surgical introducers |
US9737287B2 (en) | 2014-05-13 | 2017-08-22 | Vycor Medical, Inc. | Guidance system mounts for surgical introducers |
US9364647B1 (en) | 2014-07-30 | 2016-06-14 | University Of South Florida | Shunt catheter system |
US10391287B1 (en) | 2014-07-30 | 2019-08-27 | University Of South Florida | Shunt catheter system |
US10456061B2 (en) | 2014-11-12 | 2019-10-29 | Nico Corporation | Holding arrangement for a surgical access system |
US10357280B2 (en) | 2015-04-30 | 2019-07-23 | Nico Corporation | Navigating introducer for tissue access system |
USD916280S1 (en) | 2015-10-16 | 2021-04-13 | Angiodynamics, Inc. | Reinforcement arms and collar for a cannula tip |
US10765450B2 (en) | 2016-03-15 | 2020-09-08 | Nico Corporation | Selectively lockable holding arrangement for a surgical access system |
US11413066B2 (en) | 2016-03-15 | 2022-08-16 | Nico Corporation | Selectively lockable holding arrangement for a surgical access system |
US10543057B2 (en) | 2016-03-15 | 2020-01-28 | Nico Corporation | Selectively lockable holding arrangement for a surgical access system |
USD916281S1 (en) | 2016-10-17 | 2021-04-13 | Angiodynamics, Inc. | Reinforcement arms and collar for a cannula tip |
USD931447S1 (en) | 2016-10-17 | 2021-09-21 | Angiodynamics, Inc. | Reinforcement arms and collar for a cannula tip |
US11045182B2 (en) | 2016-11-07 | 2021-06-29 | Vycor Medical, Inc. | Surgical introducer with guidance system receptacle |
US10543016B2 (en) | 2016-11-07 | 2020-01-28 | Vycor Medical, Inc. | Surgical introducer with guidance system receptacle |
US11517347B2 (en) | 2016-11-07 | 2022-12-06 | Vycor Medical, Inc. | Surgical introducer with guidance system receptacle |
US10376258B2 (en) | 2016-11-07 | 2019-08-13 | Vycor Medical, Inc. | Surgical introducer with guidance system receptacle |
USD972723S1 (en) | 2021-03-17 | 2022-12-13 | Angiodynamics, Inc. | Reinforcement arms and collar for an expandable cannula tip |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3690323A (en) | Device for draining ventricular fluid in cases of hydrocephalus | |
US4655745A (en) | Ventricular catheter | |
US3516410A (en) | Cerebro-ventricular catheter | |
US3583387A (en) | Pressure absorbing appliance for treating hydrocephalus | |
US4986810A (en) | Toggle catheter | |
US4621654A (en) | Attitude and pressure responsive valve | |
ES2197883T3 (en) | EXTENSION PLACEMENT SYSTEM. | |
US3654932A (en) | Surgical drain for shunting fluid | |
US5290231A (en) | Auto-inflating catheter cuff | |
US3020913A (en) | Surgical drain | |
US6080134A (en) | Expandable parenchymal bolt with lever activation | |
US4710169A (en) | Urinary catheter with collapsible urethral tube | |
US3841308A (en) | Distally valved catheter device | |
US4233983A (en) | Catheter provided with a safety-fixing member, remotely adjustable and expandible by introducing fluids | |
US4813925A (en) | Spiral ureteral stent | |
US4950232A (en) | Cerebrospinal fluid shunt system | |
US5395330A (en) | Auto-inflating catheter cuff | |
US6338727B1 (en) | Indwelling heat exchange catheter and method of using same | |
US4659329A (en) | Liquid drainage system | |
US8376980B2 (en) | Ingrowth preventing indwelling catheter assembly | |
US3583404A (en) | Nonblocking catheter | |
US5925301A (en) | Expandable flowrate catheter assembly and method of making same | |
US20060015089A1 (en) | Catheter and method of fluid removal from a body cavity | |
US3109429A (en) | Ventriculo-venous shunt device for treatment of hydrocephalus | |
US4632668A (en) | Ventricular catheter |