Title of Invention

VENOUS RESERVOIR WITH INTEGRAL CARDIOTOMY RESERVOIR FOR BLOOD OXYGENATOR

Abstract A venous reservoir with integral cardiotomy reservoir for blood oxygenator comprising: a housing, said housing having a venous chamber (4) and a cardiotomy chamber (3) in flotAl communication tAlith each other, said venous chamber having a venous blood inlet (5) and an outlet (6); said cardiotomy chalftber having inlet (7) and a coupling section (13) with said shell for connection to an oxygenator.
Full Text

FIELD OF INVENTION
This invention more particularly relates to improved venous reservoir with integral cardiotomy reservoir for blood oxygenator.
BACKGROUND OF INVENTION
Venous Reservoirs are disposable devices more often used with Blood Oxygenators in open heart surgeries to collect, defoam and temporarily store the venous and cardiotomy blood from the patient. The input to the device is the raw venous and cardiotomy blood from the patient. The output of the device is the filtered and defoamed blood.
OBJECTS OF THE INVENTION
An object of this invention is to propose an improved venous reservoir with integral cardiotomy reservoir for collection of venous blood and collection defoaming and filtering of cardiotomy blood.

Another object of this invention is to propose an improved venous reservoir with integral cardiotomy reservoir for collection of venous blood and collection, defoaming and filtering of cardiotomy blood which is easy to fabricate, sterilise and store for specified period without any impairment of efficiency.

DESCRIPTION OF INVENTION
According to this invention there is provided an improved venous reservoir with
integral craniotomy reservoir for blood oxygenator comprising:
a housing
said housing having a venous chamber and a cardiotomy chamber in flow

communication with each other ili) said venous chamber having a venous blood inlet and an outlet
said carditomy chamber having inlet y)/ a coupling section with said shell for connection to an oxygenator.

DESCRIPTION OF INVENTION WITH REFERENCE TO ACCOMPANYING DRAWINGS
Further objects and advantages of this invention will be more apparent from the
ensuing description with respect to the accompanying drawings and wherein:
Fig.l. shows a front perspective view of the venous reservoir
with integral cardiotomy reservoir; and
Fig.2. shows a sectional view of the venous reservoir with integral
carditomy reservoir.
Referring to the drawings the venous reservoir with integral cardiotomy reservoir
consisting
comprises a housing of a tapered shell (1) having a top cover (2) made
preferably of rigid plastics like Polycarbonate, Polystyrene There are two
chambers inside shell l,viz cardiotomy reservoir chamber (3) and venous reservior
chamber (4) both being connected to each other. Shell 1 has a venous blood inlet

(5) and outlet (6) port, cardiotomy inlet port (7), venous sampling ports (8), thermowell
and port (9) and air vents (10). There is also an auxiliary venous inlet port and quick
prime port (12). The venous inlet port (5) has the provision to rotate on it's own axis
to provide operator convenience. A neck (13) is provided for coupling to the
'Oxygenator' -another device to be used along with this device. The profile (14) and
projections (15) for the seating of suitable holder for the device.
The following are the major subsystems of the device
1. Cardiotomy reservoir and filter
This section of the device collects, defoam and store the cardiotomy blood Graded fine and coarse filters 16 are provided to give desired cutoff for

filtration. The stuffed defoamer with appropriate coating carry out the
defoaming function. Provision is also there to eliminate the free fall of blood
Which may damage it and also for the proper seating of the filter components.
The reservoir chamber directly communicates with the venous chamber and
profile is tapered to allow smooth flow of blood.
2. Venous reservoir
This section receives the venous blood and delivers to the venous chamber
through a coarse filter 17. The extension to the venous inlet assures the
delivery of venous blood at the bottom of the shell so as avoid any splash of
blood.




WE CLAIM:
1. An improved venous reservoir with integral cardiotomy
reservoir for blood oxygenator comprisings a housing. said housing having a venous chamber (4) and a
cardiotomy chamber (3) in flow communication with each other,
said venous chamber having a venous blood inlet and
an outlet (6>
said carditomy chamber having inlet (7) and
a coupling section (13) with said shel1 for connection to
an oxygenator.
2- An improved venous reservoir as claimed in claim 1 wherein
said venos blood inlet is rotatable.
3. An improved Venous reservoir as claimed in claim 1 wherein
said cardiotomy chamber (3) has a filter (16) comprising of fine
and coarse filters.
4. An improved venous reservoir as claimed in claim 1 wherein
said venous chamber (4) has a filter (17)
5. An improved venous resservoir as claimed in claim 1
wherein said housing is tapered.

6. An improved venous reservoir substantially as herein described and i1lustrated.


Documents:

203-mas-2000-abstract.pdf

203-mas-2000-claims duplicate.pdf

203-mas-2000-claims original.pdf

203-mas-2000-corresppondence other.pdf

203-mas-2000-corresppondence po.pdf

203-mas-2000-descripition complete duplicate.pdf

203-mas-2000-descripition complete original.pdf

203-mas-2000-drawings.pdf

203-mas-2000-form 1.pdf

203-mas-2000-form 19.pdf

203-mas-2000-form 26.pdf


Patent Number 206774
Indian Patent Application Number 203/MAS/2000
PG Journal Number 26/2007
Publication Date 29-Jun-2007
Grant Date 11-May-2007
Date of Filing 13-Mar-2000
Name of Patentee SOUTH INDIA DRUGS AND DEVICES PVT.LTD (SIDD)
Applicant Address PLOT NO.4,MMDA INDUSTRIAL ESTATE, MARAIMALAI NAGAR, TAMIL NADU-603 209.
Inventors:
# Inventor's Name Inventor's Address
1 BHUVANESHWAR GOBICHETTIPALAYM SUBBARATNAM SREE CHITRA TIRUNAL INSTITUTE FOR MEDICAL SCIENCES & TECHNOLOGY,BIOMEDICAL TECHNOLOGY WING SATEMOND PALACE, TRIVANDRUM-695 012.
2 MURALEEDHARAN CHIRATHODY VAYALAPPIL SREE CHITRA TIRUNAL INSTITUTE FOR MEDICAL SCIENCES & TECHNOLOGY,BIOMEDICAL TECHNOLOGY WING SATEMOND PALACE, TRIVANDRUM-695 012.
3 NAGESH DIVAKARAN SULOCHANA SREE CHITRA TIRUNAL INSTITUTE FOR MEDICAL SCIENCES & TECHNOLOGY,BIOMEDICAL TECHNOLOGY WING SATEMOND PALACE, TRIVANDRUM-695 012.
4 VIJAYAKUMAR HARIKRISHNAN SOUTH INDIA DRUGS AND DEVICES PVT.LTD.(SIDD),PLOT NO.4,MMDA INDUSTRIAL ESTATE,MARAIMALAI NAGAR,TAMIL NADU-603 209.
PCT International Classification Number A61M1/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA