WO2021089220A1 - A pumping device of the annular chamber of a device for the extraction of elements contained into a cavity - Google Patents

A pumping device of the annular chamber of a device for the extraction of elements contained into a cavity Download PDF

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Publication number
WO2021089220A1
WO2021089220A1 PCT/EP2020/075248 EP2020075248W WO2021089220A1 WO 2021089220 A1 WO2021089220 A1 WO 2021089220A1 EP 2020075248 W EP2020075248 W EP 2020075248W WO 2021089220 A1 WO2021089220 A1 WO 2021089220A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
pumping
frangible membrane
drilling means
peak
Prior art date
Application number
PCT/EP2020/075248
Other languages
French (fr)
Inventor
Jorge Ernesto Odon
Original Assignee
Air Bag One Sarl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Air Bag One Sarl filed Critical Air Bag One Sarl
Publication of WO2021089220A1 publication Critical patent/WO2021089220A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/42—Gynaecological or obstetrical instruments or methods
    • A61B17/44—Obstetrical forceps
    • A61B17/442—Obstetrical forceps without pivotal connections, e.g. using vacuum

Definitions

  • Applicant does not have knowledge of the application of pumping media for fluids contained in cylinders in devices intended for birth assistance.
  • Odon Device In the state of the art there exists a device for birth assistance known as Odon Device”.
  • This device consists of a sleeve with an annular chamber which is inflated closing around the fetus head, with the necessary pressure to drag the fetus when pulling one of the ends of the device. This effect is known as “air clamp”.
  • the annular chamber In one of the variations of this device, the annular chamber is manually inflated to press over the cephalic pole of a fetus and to have enough grip so as to drag it out of the birth canal.
  • the manual pumping is made by means of an inflating baloon and that is regulated opening/closing the relief valve of same.
  • an inflating baloon that is regulated opening/closing the relief valve of same.
  • a pumping device which in a unique and simple operation inflates the annular chamber at a desired pressure, and the birth assistant gets released from the pumping activities.
  • the mechanism also includes a means to free the pressure within the device.
  • Figure 1 shows an extraction bag (1) of elements contained within a cavity with the pumping device located on the handle.
  • Figure 2 shows a first embodiment of the triggering mechanism of the cylinder in a first position of the intact frangible membrane.
  • Figure 3 shows the embodiment of the triggering mechanism of the cylinder of Figure 2 in a second position of the broken frangible membrane.
  • Figure 4 shows a second embodiment of the triggering mechanism of the cylinder in a first position of the intact frangible membrane.
  • Figure 5 shows the embodiment of the triggering mechanism of the cylinder of Figure 4 in a second position of the broken frangible membrane.
  • Figure 6 shows a third embodiment of the triggering mechanism of the cylinder in a first position of the intact frangible membrane.
  • Figure 7 shows the embodiment of the triggering mechanism of the cylinder of Figure 6 in a second position of the broken frangible membrane.
  • Figure 1 shows an extraction bag (1) (shown in dotted lines) of elements contained into a cavity in which the pumping device of this invention has been placed.
  • the air chamber (3); the bag handle (4), the support (5) of the cylinder, with the supporting foot (6), the cylinder (7) with an end closed (8) and an end with a peak (9), the pushing means of the cylinder (10) and the pumping duct (11) are seen.
  • the cylinder support presents a cavity (12) in which the cylinder is located and allows a relative movement between the support and the cylinder.
  • the support has an expansion spring (13) which maintains the cylinder leaning against the pushing means.
  • the cylinder support is fixed to the handle of the extraction bag.
  • the supporting foot provides a drilling means (14) that is a hollow tube with a free end diagonally cut, and the opposite end is connected to the vinculation duct (15).
  • the cylinder has, on its end with a peak, a frangible membrane (16) to prevent its reuse.
  • a drilling means breaks said membrane, communicating the cylinder with the air chamber. Once the membrane is broken, the cylinder cannot be refilled. The diagonally cut end of the drilling means facilitates the breakage of the frangible membrane.
  • the outer body of the supporting foot forms a housing to place the expansion spring which pushes the cylinder against the pushing means.
  • the supporting foot presents a concentric inner ring. In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use.
  • the inner tube of the inner ring presents a circular transverse cut to facilitate the insertion of the cylinder peak.
  • a circular slot that lodges the o’ring on the inner wall of the concentric ring is foreseen.
  • the o’ring is intended to prevent the loss of pressure when operating the device.
  • the cylinder peak fits tightly within the o’ring so as to form an enclosed vinculation, forcing the compressed air to move through the drilling means.
  • the supporting foot has the drilling means to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
  • the frangible membrane When in use, once the device to extract elements contained within a cavity is in its position, intead of pumping a bulb to inflate the annular chamber, the frangible membrane is broken by pushing the cylinder against the drilling means, up to the moment the frangible membrane is broken and the cylinder pressure is released. This pressure fills the annular chamber up to a pressure level predetermined by the cylinder load.
  • Figures 2 and 3 show, transversely, a first embodiment of the pumping device of the present invention where the pushing means is an eccentric item (17) operated by an arm (18) in two positions: a first position where the cylinder is with the intact frangible membrane (Figure 2) and a second position where the cylinder is with the broken frangible membrane (Figure 3).
  • the cylinder is placed within the cylinder support with the closed end towards the pushing means and the end with the peak facing towards the supporting foot.
  • the outer body of the supporting foot forms a housing (19) to place the expansion spring which pushes the cylinder against the eccentric item.
  • the supporting foot presents a concentric inner ring (20). In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use.
  • the inner tube of the inner ring presents a circular transverse cut (21) to facilitate the insertion of the cylinder peak.
  • a circular slot that lodges an o’ring (22) on the inner wall of the concentric ring is foreseen.
  • the o’ring is intended to prevent the loss of pressure when operating the device.
  • the cylinder peak fits tightly within the o’ring so as to form an enclosed vinculation, forcing the compressed air to move through the drilling means.
  • the supporting foot has the drilling means to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber
  • the eccentric item When operating the arm of the pushing means, the eccentric item pushes the cylinder by the closed end against the spring causing the relative movement between the cylinder and the support, and getting the frangible membrane close to the drilling means.
  • the cylinder peak is inserted into the concentric inner ring up to the moment the drilling means breaks the frangible membrane and frees air towards the annular chamber.
  • the eccentric item of the pushing means presents a configuration such that, with the cylinder in its first position, the spring prevents the operation of the drilling means over the frangible membrane due to the push of the latter, moving the peak away from the drilling means. With the cylinder in its second position, the eccentric item pushes the cylinder towards the supporting foot so that the drilling means breaks the frangible membrane of the cylinder, allowing the circulation of the compressed fluid through the cylinder peak. The o’ring prevents that the air escapes through the sides, sending all the flow along the hollow of the drilling means to the vinculation duct.
  • the eccentric item has a configuration such that, in the second position of the cylinder, the arm gets locked, preventing that the spring moves the cylinder. This is to prevent any non intentional deflation of the air chamber.
  • the arm is turned to the first position.
  • the spring pushes the cylinder moving and freeing the peak of the o’ring and allowing that the air compressed within the circuit may escape through the space between the o’ring and the peak.
  • the pumping duct may have a pumping sample ball (23).
  • Figures 4 and 5 show, transversely, a second embodiment of the pumping device of the present invention where the pushing means is an screw (24) operated by a wheel (25) between two extreme positions: a first position where the cylinder is with the intact frangible membrane ( Figure 4) and a second position where the cylinder is with the broken frangible membrane ( Figure 5).
  • the screw thread is preferably thick.
  • This embodiment comprises an air relief channel (26).
  • the outer body of the supporting foot forms a housing (19) to place the expansion spring (13) which pushes the cylinder (7) against the screw.
  • the supporting foot presents a concentric inner ring (20). In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use.
  • the inner tube of the inner ring presents a circular transverse cut to facilitate the insertion of the cylinder peak.
  • a circular slot that lodges the o’ring on the inner wall of the concentric ring is foreseen.
  • the o’ring is intended to prevent the loss of pressure when operating the device.
  • the supporting foot has the drilling means to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
  • the screw When operating the wheel, the screw pushes the cylinder by the closed end against the spring causing the relative movement between the cylinder and the support, and getting the frangible membrane close to the drilling means.
  • the cylinder peak is inserted into the concentric inner ring up to the moment the drilling means breaks the frangible membrane.
  • the screw pushes the cylinder towards the supporting foot so that the drilling means breaks the frangible membrane of the cylinder, allowing the circulation of the compressed fluid through the cylinder peak.
  • the o’ring prevents that the air escapes through the sides, sending all the flow along the drilling means to the air chamber.
  • the air relief channel is linked to the drilling means through a hole momentarily closed.
  • a valve seat (27) blocks a lateral hole (28) in the drilling means.
  • Said valve seat is fixed to a stem (29) that is operated by a button (30).
  • the valve seat normally is in the position of the blocked hole by the action of a spring (31).
  • the button is operated freeing the lateral hole by which the fluid under pressure escapes.
  • the button may have a mechanism to avoid the reuse of the device. This mechanism may be a non return lock.
  • the pumping duct may have a pumping sample ball (23).
  • Figures 6 and 7 show, transversely, a third embodiment of the pumping device of the present invention where the pushing means is an screw (24) operated by a wheel (25) between two extreme positions: a first position where the cylinder is with the intact frangible membrane ( Figure 6) and a second position where the cylinder is with the broken frangible membrane ( Figure 7).
  • the screw thread is preferably thick.
  • the cylinder (7) is placed within the cylinder support (5) with the closed end towards the screw and the end with the peak facing towards the supporting foot.
  • the outer body of the supporting foot forms a housing (19) to place the expansion spring (13) which pushes the cylinder against the pushing means.
  • the supporting foot presents a concentric inner ring (20). In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use.
  • the inner tube of the inner ring presents a circular transverse cut (21 ) to facilitate the insertion of the cylinder peak.
  • a circular slot that lodges an o’ring (22) on the inner wall of the concentric ring is foreseen.
  • the o’ring is intended to prevent the loss of pressure when operating the device.
  • the supporting foot has the drilling means (14) to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
  • the screw When operating the wheel, the screw pushes the cylinder by the closed end against the spring causing the relative movement between the cylinder and the support, and getting the frangible membrane close to the drilling means.
  • the cylinder peak is inserted into the concentric inner ring up to the moment the drilling means breaks the frangible membrane.
  • the screw With the cylinder in its second position, the screw pushes the cylinder towards the supporting foot so that the drilling means breaks the frangible membrane of the cylinder, allowing the circulation of the compressed fluid through the cylinder peak.
  • the o’ring prevents that the air escapes through the sides, sending all the flow along the concentric tube to the vinculation duct.
  • the screw is turned back to the first position. The spring pushes the cylinder moving and freeing the peak of the o’ring and allowing that the air compressed within the circuit may escape through the space between the o’ring and the peak.
  • the pumping duct may have a pumping sample ball (23).

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Gynecology & Obstetrics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Reproductive Health (AREA)
  • Engineering & Computer Science (AREA)
  • Pregnancy & Childbirth (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Reciprocating Pumps (AREA)
  • Extraction Or Liquid Replacement (AREA)

Abstract

A pumping device of the annular chamber of a device for the extraction of elements contained into a cavity, comprising a cylinder with compressed fluid provided on a cylinder support on the handle of the device, where the cylinder has a cylinder peak with a frangible membrane and being said cylinder with the closed end leaning against a pushing means due to the action of the spring, and the opposite end with the peak fitted within the supporting foot of the cylinder; a vinculation duct provided within the supporting foot between the cylinder peak and the pumping duct, which is connected to the annular chamber; where the vinculation duct presents a hollow body with an internal passage; said cylinder having drilling means of the frangile membrane of the cylinder peak.

Description

A PUMPING DEVICE OF THE ANNULAR CHAMBER OF A DEVICE FOR THE EXTRACTION OF ELEMENTS CONTAINED INTO A CAVITY
DESCRIPTION
Background
Applicant does not have knowledge of the application of pumping media for fluids contained in cylinders in devices intended for birth assistance.
Objectives
Certainty in the pumping pressure of the annular chamber.
Quickness in pumping the annular chamber. Easy liberation of the pressure of the annular chamber at the required moment.
Disposable device.
State of the Art
In the state of the art there exists a device for birth assistance known as Odon Device”. This device consists of a sleeve with an annular chamber which is inflated closing around the fetus head, with the necessary pressure to drag the fetus when pulling one of the ends of the device. This effect is known as “air clamp”. In one of the variations of this device, the annular chamber is manually inflated to press over the cephalic pole of a fetus and to have enough grip so as to drag it out of the birth canal.
The manual pumping is made by means of an inflating baloon and that is regulated opening/closing the relief valve of same. At the time of the delivery, it is not convenient that the birth assistant be distracted with procedures not related to the birth itself: that is: occupating one hand for pumping, inflating the annular chamber, the pumping pressure, regulation, etc.
For this reason, a pumping device is revealed which in a unique and simple operation inflates the annular chamber at a desired pressure, and the birth assistant gets released from the pumping activities. The same hand which grabs the bag, has access to a security lock and the pushing means that triggers the pump of the annular chamber. The mechanism also includes a means to free the pressure within the device.
Brief description of the figures
Figure 1 shows an extraction bag (1) of elements contained within a cavity with the pumping device located on the handle.
Figure 2 shows a first embodiment of the triggering mechanism of the cylinder in a first position of the intact frangible membrane. Figure 3 shows the embodiment of the triggering mechanism of the cylinder of Figure 2 in a second position of the broken frangible membrane. Figure 4 shows a second embodiment of the triggering mechanism of the cylinder in a first position of the intact frangible membrane.
Figure 5 shows the embodiment of the triggering mechanism of the cylinder of Figure 4 in a second position of the broken frangible membrane.
Figure 6 shows a third embodiment of the triggering mechanism of the cylinder in a first position of the intact frangible membrane.
Figure 7 shows the embodiment of the triggering mechanism of the cylinder of Figure 6 in a second position of the broken frangible membrane.
Description of the invention
Figure 1 shows an extraction bag (1) (shown in dotted lines) of elements contained into a cavity in which the pumping device of this invention has been placed. The air chamber (3); the bag handle (4), the support (5) of the cylinder, with the supporting foot (6), the cylinder (7) with an end closed (8) and an end with a peak (9), the pushing means of the cylinder (10) and the pumping duct (11) are seen.
The cylinder support presents a cavity (12) in which the cylinder is located and allows a relative movement between the support and the cylinder. The support has an expansion spring (13) which maintains the cylinder leaning against the pushing means. The cylinder support is fixed to the handle of the extraction bag.
The supporting foot provides a drilling means (14) that is a hollow tube with a free end diagonally cut, and the opposite end is connected to the vinculation duct (15).
The cylinder has, on its end with a peak, a frangible membrane (16) to prevent its reuse. When the device is in use, a drilling means breaks said membrane, communicating the cylinder with the air chamber. Once the membrane is broken, the cylinder cannot be refilled. The diagonally cut end of the drilling means facilitates the breakage of the frangible membrane.
The outer body of the supporting foot forms a housing to place the expansion spring which pushes the cylinder against the pushing means. The supporting foot presents a concentric inner ring. In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use. The inner tube of the inner ring presents a circular transverse cut to facilitate the insertion of the cylinder peak. A circular slot that lodges the o’ring on the inner wall of the concentric ring is foreseen. The o’ring is intended to prevent the loss of pressure when operating the device. The cylinder peak fits tightly within the o’ring so as to form an enclosed vinculation, forcing the compressed air to move through the drilling means. The supporting foot has the drilling means to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
When in use, once the device to extract elements contained within a cavity is in its position, intead of pumping a bulb to inflate the annular chamber, the frangible membrane is broken by pushing the cylinder against the drilling means, up to the moment the frangible membrane is broken and the cylinder pressure is released. This pressure fills the annular chamber up to a pressure level predetermined by the cylinder load.
Figures 2 and 3 show, transversely, a first embodiment of the pumping device of the present invention where the pushing means is an eccentric item (17) operated by an arm (18) in two positions: a first position where the cylinder is with the intact frangible membrane (Figure 2) and a second position where the cylinder is with the broken frangible membrane (Figure 3). The cylinder is placed within the cylinder support with the closed end towards the pushing means and the end with the peak facing towards the supporting foot.
The outer body of the supporting foot forms a housing (19) to place the expansion spring which pushes the cylinder against the eccentric item. The supporting foot presents a concentric inner ring (20). In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use. The inner tube of the inner ring presents a circular transverse cut (21) to facilitate the insertion of the cylinder peak. A circular slot that lodges an o’ring (22) on the inner wall of the concentric ring is foreseen. The o’ring is intended to prevent the loss of pressure when operating the device. The cylinder peak fits tightly within the o’ring so as to form an enclosed vinculation, forcing the compressed air to move through the drilling means. The supporting foot has the drilling means to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
When operating the arm of the pushing means, the eccentric item pushes the cylinder by the closed end against the spring causing the relative movement between the cylinder and the support, and getting the frangible membrane close to the drilling means. The cylinder peak is inserted into the concentric inner ring up to the moment the drilling means breaks the frangible membrane and frees air towards the annular chamber.
The eccentric item of the pushing means presents a configuration such that, with the cylinder in its first position, the spring prevents the operation of the drilling means over the frangible membrane due to the push of the latter, moving the peak away from the drilling means. With the cylinder in its second position, the eccentric item pushes the cylinder towards the supporting foot so that the drilling means breaks the frangible membrane of the cylinder, allowing the circulation of the compressed fluid through the cylinder peak. The o’ring prevents that the air escapes through the sides, sending all the flow along the hollow of the drilling means to the vinculation duct. The eccentric item has a configuration such that, in the second position of the cylinder, the arm gets locked, preventing that the spring moves the cylinder. This is to prevent any non intentional deflation of the air chamber. To free the pressure within the circuit of the pumping duct and of the annular chamber, the arm is turned to the first position. The spring pushes the cylinder moving and freeing the peak of the o’ring and allowing that the air compressed within the circuit may escape through the space between the o’ring and the peak.
The pumping duct may have a pumping sample ball (23).
Figures 4 and 5 show, transversely, a second embodiment of the pumping device of the present invention where the pushing means is an screw (24) operated by a wheel (25) between two extreme positions: a first position where the cylinder is with the intact frangible membrane (Figure 4) and a second position where the cylinder is with the broken frangible membrane (Figure 5). The screw thread is preferably thick.
This embodiment comprises an air relief channel (26).
The outer body of the supporting foot forms a housing (19) to place the expansion spring (13) which pushes the cylinder (7) against the screw. The supporting foot presents a concentric inner ring (20). In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use. The inner tube of the inner ring presents a circular transverse cut to facilitate the insertion of the cylinder peak. A circular slot that lodges the o’ring on the inner wall of the concentric ring is foreseen. The o’ring is intended to prevent the loss of pressure when operating the device. The supporting foot has the drilling means to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
When operating the wheel, the screw pushes the cylinder by the closed end against the spring causing the relative movement between the cylinder and the support, and getting the frangible membrane close to the drilling means. The cylinder peak is inserted into the concentric inner ring up to the moment the drilling means breaks the frangible membrane.
With the cylinder in its second position, the screw pushes the cylinder towards the supporting foot so that the drilling means breaks the frangible membrane of the cylinder, allowing the circulation of the compressed fluid through the cylinder peak. The o’ring prevents that the air escapes through the sides, sending all the flow along the drilling means to the air chamber.
The air relief channel is linked to the drilling means through a hole momentarily closed. A valve seat (27) blocks a lateral hole (28) in the drilling means. Said valve seat is fixed to a stem (29) that is operated by a button (30). The valve seat normally is in the position of the blocked hole by the action of a spring (31). When operating the button and overcoming the strength of the spring, the valve seat frees the lateral hole allowing that the fluid under pressure escapes by the air relief channel. Once the requirement of the pumping of the annular chamber is finished, the button is operated freeing the lateral hole by which the fluid under pressure escapes. The button may have a mechanism to avoid the reuse of the device. This mechanism may be a non return lock.
The pumping duct may have a pumping sample ball (23).
Figures 6 and 7 show, transversely, a third embodiment of the pumping device of the present invention where the pushing means is an screw (24) operated by a wheel (25) between two extreme positions: a first position where the cylinder is with the intact frangible membrane (Figure 6) and a second position where the cylinder is with the broken frangible membrane (Figure 7). The screw thread is preferably thick.
The cylinder (7) is placed within the cylinder support (5) with the closed end towards the screw and the end with the peak facing towards the supporting foot.
The outer body of the supporting foot forms a housing (19) to place the expansion spring (13) which pushes the cylinder against the pushing means. The supporting foot presents a concentric inner ring (20). In the interior of said concentric inner ring, the peak of said cylinder will be lodged when the device is in use. The inner tube of the inner ring presents a circular transverse cut (21 ) to facilitate the insertion of the cylinder peak. A circular slot that lodges an o’ring (22) on the inner wall of the concentric ring is foreseen. The o’ring is intended to prevent the loss of pressure when operating the device. The supporting foot has the drilling means (14) to break the frangible membrane of the cylinder peak when said cylinder is passed to the second position. Furthermore, said drilling means is fluidly communicated with the vinculation duct and to the pumping duct that leads directly to the annular chamber.
When operating the wheel, the screw pushes the cylinder by the closed end against the spring causing the relative movement between the cylinder and the support, and getting the frangible membrane close to the drilling means. The cylinder peak is inserted into the concentric inner ring up to the moment the drilling means breaks the frangible membrane.
With the cylinder in its second position, the screw pushes the cylinder towards the supporting foot so that the drilling means breaks the frangible membrane of the cylinder, allowing the circulation of the compressed fluid through the cylinder peak. The o’ring prevents that the air escapes through the sides, sending all the flow along the concentric tube to the vinculation duct. To free the pressure within the circuit of the pumping duct and of the annular chamber, the screw is turned back to the first position. The spring pushes the cylinder moving and freeing the peak of the o’ring and allowing that the air compressed within the circuit may escape through the space between the o’ring and the peak. The pumping duct may have a pumping sample ball (23).

Claims

1. A pumping device of the annular chamber of a device for the extraction of elements contained into a cavity, wherein it comprises: a cylinder with compressed fluid provided on a cylinder support on the handle of the device, where the cylinder has a first closed end that is leaned against the pushing means, and a second end with a cylinder peak, having a frangible membrane, to fit within the concentric tube of the supporting foot; a vinculation duct provided within the supporting foot between the drilling means and the pumping duct, which is connected to the annular chamber; where the drilling means is a hollow tube with an end capable of breaking the frangible membrane and the opposite end is connected to the vinculation duct; where the drilling means, in the normal position of the cylinder, does not act over the frangible membrane, and in operating position, it breaks same; a pushing means, which is operated offsetting the spring and pushing the cylinder towards the drilling means, to break the frangible membrane freeing the fluid contained in the cylinder to the pumping duct.
2. The pumping device of claim 1, wherein the supporting foot of the cylinder presents a concentric tube where the outer side has a first housing for a spring which acts against the cylinder and on the inner side, it has a circular slot to lodge an o'ring and the drilling means.
3. The pumping device of claim 2, wherein the pushing means is an eccentric item operated by an arm that overcomes the resistance of an expansion spring provided against the cylinder peak, and that pushes said cylinder against the drilling means breaking the frangible membrane.
4. The pumping device of claim 2, wherein by regressing the eccentric item, the liberation of fluid under pressure is allowed through the center of the o’ring within the interior of the concentric tube.
5. The pumping device of claim 1, wherein the pushing means is a screw operated by a wheel which, when operated, pushes the cylinder overcoming the resistance of the spring against the drilling means, breaking the frangible membrane.
6. The pumping device of claim 5, wherein by regressing the screw, the liberation of fluid under pressure is allowed through the center of the o’ring within the interior of the concentric tube.
7. The pumping device of claim 5, wherein the concentric tube further comprises a lateral hole momentarily closed by a stem seat which blockes same, being said valve seat fixed to a stem which is operated by a button operated by a spring that keeps the valve seat blocking the lateral hole.
PCT/EP2020/075248 2019-11-05 2020-09-09 A pumping device of the annular chamber of a device for the extraction of elements contained into a cavity WO2021089220A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ARP190103224A AR116983A1 (en) 2019-11-05 2019-11-05 INFLATING DEVICE OF THE ANNULAR CHAMBER OF A DEVICE FOR EXTRACTION OF ELEMENTS CONTAINED IN A CAVITY
ARP20190103224 2019-11-05

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WO2021089220A1 true WO2021089220A1 (en) 2021-05-14

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PCT/EP2020/075248 WO2021089220A1 (en) 2019-11-05 2020-09-09 A pumping device of the annular chamber of a device for the extraction of elements contained into a cavity

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198867A (en) * 1967-12-05 1970-07-15 Tadao Fujimoto An Improved Automatic Gas Filling Device of an Inflatable Life-Saving Equipment
US5217467A (en) * 1990-05-14 1993-06-08 Medisys Technologies, Inc. Device for assisting childbirth
EP2174606A1 (en) * 2007-07-20 2010-04-14 Jorge Ernesto Odon Device for extracting elements from a cavity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198867A (en) * 1967-12-05 1970-07-15 Tadao Fujimoto An Improved Automatic Gas Filling Device of an Inflatable Life-Saving Equipment
US5217467A (en) * 1990-05-14 1993-06-08 Medisys Technologies, Inc. Device for assisting childbirth
EP2174606A1 (en) * 2007-07-20 2010-04-14 Jorge Ernesto Odon Device for extracting elements from a cavity

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