CA2314588A1 - Wound irrigation nozzle attachment for a syringe - Google Patents
Wound irrigation nozzle attachment for a syringe Download PDFInfo
- Publication number
- CA2314588A1 CA2314588A1 CA002314588A CA2314588A CA2314588A1 CA 2314588 A1 CA2314588 A1 CA 2314588A1 CA 002314588 A CA002314588 A CA 002314588A CA 2314588 A CA2314588 A CA 2314588A CA 2314588 A1 CA2314588 A1 CA 2314588A1
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- CA
- Canada
- Prior art keywords
- wound irrigation
- fluid
- nozzle attachment
- nozzle body
- shield 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.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
- A61M3/0287—Cannula; Nozzles; Tips; their connection means with an external liquid collector
-
- 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
- A61M1/60—Containers for suction drainage, adapted to be used with an external suction source
- A61M1/63—Containers for suction drainage, adapted to be used with an external suction source with means for emptying the suction container, e.g. by interrupting suction
-
- 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
- A61M1/71—Suction drainage systems
- A61M1/77—Suction-irrigation systems
-
- 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
- A61M3/00—Medical syringes, e.g. enemata; Irrigators
- A61M3/02—Enemata; Irrigators
- A61M3/0279—Cannula; Nozzles; Tips; their connection means
- A61M3/0283—Cannula; Nozzles; Tips; their connection means with at least two inner passageways, a first one for irrigating and a second for evacuating
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- Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Anesthesiology (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Vascular Medicine (AREA)
- Pulmonology (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention is concerned with a wound irrigation nozzle attachment for a syringe having an elongated hollow syringe body with a fluid supply chamber defined therein and a plunger movable within the syringe body.
The wound irrigation nozzle attachment according to the invention comprises an elongated nozzle body having opposite first and second ends and a fluid passageway extending therebetween, an inlet passage and an outlet passage disposed at the first end of the nozzle body and each in fluid flow communication with the passageway, the inlet and outlet passages having respective free ends disposed adjacent to one another. The nozzle attachment further includes valve means displaceable between open and closed positions, and releasable coupling means arranged at the second end of the nozzle body for releasably connecting the nozzle body to the syringe body to provide fluid flow communication between the passageway and the chamber. When the valve means is in the open position, fluid is conveyable through the inlet passage, the passageway and into the chamber in response to an outward displacement of the plunger within the syringe body and, when the valve means is in the closed position, fluid discharged from the chamber, in response to an inward displacement of the plunger within the syringe body, flows through the passageway and the outlet passage for delivery onto a wound while being prevented by the valve means from flowing from the passageway through the inlet passage. A shield member is pivotally mounted to the nozzle body and can also be slidably displaced therealong such that the shield member can be selectively positioned in an operative position adjacent to the first end of the nozzle body and transverse thereto, or in a storage position where the shield member is collapsed against the nozzle body.
The wound irrigation nozzle attachment according to the invention comprises an elongated nozzle body having opposite first and second ends and a fluid passageway extending therebetween, an inlet passage and an outlet passage disposed at the first end of the nozzle body and each in fluid flow communication with the passageway, the inlet and outlet passages having respective free ends disposed adjacent to one another. The nozzle attachment further includes valve means displaceable between open and closed positions, and releasable coupling means arranged at the second end of the nozzle body for releasably connecting the nozzle body to the syringe body to provide fluid flow communication between the passageway and the chamber. When the valve means is in the open position, fluid is conveyable through the inlet passage, the passageway and into the chamber in response to an outward displacement of the plunger within the syringe body and, when the valve means is in the closed position, fluid discharged from the chamber, in response to an inward displacement of the plunger within the syringe body, flows through the passageway and the outlet passage for delivery onto a wound while being prevented by the valve means from flowing from the passageway through the inlet passage. A shield member is pivotally mounted to the nozzle body and can also be slidably displaced therealong such that the shield member can be selectively positioned in an operative position adjacent to the first end of the nozzle body and transverse thereto, or in a storage position where the shield member is collapsed against the nozzle body.
Description
"WOUND IRRIGATION NOZZl~E ATTACHMENT
FOR A SYRINCiE"
The present invention pertains to improvements in the field of medical care. More particularly, the invention relates to a wound irrigation nozzle attachment for a syringe.
Wounds require irrigation or washing with a fluid such as sterile water, a sterile saline solution or a Ringer lactate solution in order to dislodge any foreign particles contaminating the wound. Various wound irrigation systems are known. One such system comprises a syringe with a plunger movable therein and a one-way valve, a first flexible conduit connecting the valve to a bulk container of fluid for filling the syringe with fluid from the bulk container in response to an outward displacement of the plunger, and a second flexible conduit connected to the syringe for discharging the fluid therefrom onto the wound in response to an inward displacement of the plunger, the valve preventing the outflow of fluid back into the bulk container during the inward displacement of the plunger. Such a wound irrigation system is not only time-consuming to install, but also requires several pieces which add to the cost.
Another type of wound irrigation device is known, which consists of a syringe having; a plunger movable therein and a single tube which serve for both filling the syringe with fluid and discharging the fluid therefrom onto a wound. Since use is made of a single tube having a diameter such as to provide a fluid pressure sufficient to adequately irrigate the wound, the filling operation is difficult and time-consuming.
It is therefore an object of the present invention to overcome the above drawbacks and to provide a wound irrigation nozzle attachment for a syringe, having improved fluid flow characteristics.
In accordance with the invention, there is provided a wound irrigation nozzle attachment for a syringe having an elongated hollow syringe body with a fluid supply chamber defined therein and a plunger movable within the syringe body. The wound irrigation nozzle attachment according to the invention comprises an elongated nozzle body having opposite first and second ends and a fluid passageway extending therebetween, an inlet passage and an outlet passage disposed at the first end of the nozzle body and each in fluid flow communication with the passageway, the inlet and outlet passages having respective free ends disposed adjacent to one another. The nozzle attachment further includes valve means displaceable between open and closed positions, and releasable coupling means arranged at the second end of the nozzle body for releasably connecting the nozzle body to the syringe body to provide fluid flow communication between the passageway a.nd the chamber. When the valve means is in the opf;n position, fluid is conveyable through the inlet passage, the passageway and into the chamber in response to an outward displacement of the plunger within the syringe body and, when the valve means is in the closed position, fluid discharged from the chamber, in response to an inward displacement of the plunger within the syringe body, flows through the passageway and the outlet passage for delivery onto a wound while being prevented by the valve means from flowing from the passageway through the inlet passage.
According to a preferred embodiment of the invention, the releasable coupling means comprises a thread engaging element adapted to threadably engage a complementary threaded member provided at one end of the syringe body. Preferably, the complementary threaded member has an internally threaded terminal portion, which includes a pair of identical threads extending parallel and in a coextensive manner with respect to one another.
The thread engaging element is provided with first and second thread engaging portions adapted to simultaneously engage a. respective one of the pair of threads.
According to another preferred embodiment, the inlet passage is defined outwardly of the outlet passage. Preferably, the inlet passage defines a flow area greater than that of the outlet passage for high flow filling of the chamber during thf; outward displacement of the plunger and for high pressure dispensing of the fluid during the inward displacement of the plunger. The valve means preferably comprises a valve member disposed within the first end of the nozzle body and adapted to be displaced along a longitudinal axis of the first end in response to the displacement of the plunger. The first end has an outwardly converging end section and the valve member has an outwardly converging distal ;section, the outlet passage being defined in the valve member.
In the open position, the valve member is in a retracted position thereof in the first end such that the end section and the distal section are spaced apart thereby defining therebetween the inlet passage, whereas, in the closed position, the valve member is in an extended position thereof in the first end such that the distal section sealingly contacts the end section to thereby close the inlet passage. Preferably, the end section and distal section each have a substantially frusto-conical shape.
According to a further preferred embodiment, inwardly of each of the distal section and the end section, the valve member and the first end define respective concentrically disposed inner and outer cylindrical sections which cooperate together to guide the valve member during inward and outward axial displacements thereof within the first end. The first end preferably defines an inner abutment shoulder at a proximal end of the outer cylindrical section, the abutment shoulder and the end section limiting the inward and outward axial displacements of the valve member. Preferably, the inner cylindrical section of the valve member has peripherally spaced-apart longitudinal outer ribs contacting the outer cylindrical section to guide the valve member within the first end during the inward and outward axial displacements of the valve member, the abutment shoulder being adapted to engage the ribs for limiting the inward axial displacement of the valve member. The inlet passage preferably includes further fluid passageways defined radially between the inner and outer cylindrical sections and circumferentially between the ribs.
According to yet another preferred embodiment, the wound irrigation nozzle attachment further includes fluid splash arresting means mounted on the nozzle body for preventing fluid splashes contaminated by the wound from reaching a user of the wound irrigation nozzle attachment and syringe. Preferably, the fluid arresting means comprises a shield member having an opening defined therethrough, the nozzle body extending through the opening. In a particularly preferred embodiment, the shield member is pivotally mounted on the nozzle body for pivotal movement about a pivot axis extending transversely of the nozzle body, between a storage position whereat the shield member is collapsed against the nozzle body and an operative position whereat the shield member extends away from the nozzle body transversely thereof. A
pair of spaced-apart, longitudinally extending parallel ribs are provided on each of opposite sides of the nozzle body, each pair of ribs defining therebetween a guideway, and a pair of pivot elements extend inwardly of the shield member to engage a respective one of the guideways. Preferably, the pivot elements are slidably displaceable along the guideways so as to be positioned adjacent the first end of the no~:zle body when the shield member is in the operative position or to be positioned at a distance away from the first end when the shield member is in the storage position.
According to a preferred embodiment, the wound irrigation nozzle attachment further includes retainer means for retaining the shield member in the storage or operative position. Preferably, the retainer means comprise a pair of retainer elements extending inwardly of the shield member and adapted to lodge in a respective one of the guideways when the shield member is in the storage position arid to engage an outer surface of a respective one of the ribs when the shield member is in the operative position.
Further features and advantages of the invention will become more readily apparent from the following description of a preferred embodiment as illustrated by way of example in the accompanying drawings, in which:
Figure 1 is a partial bottom perspective view of a wound irrigation nozzle attachment according to a preferred embodiment of the invention, shown coupled to a syringe;
Figure 2 is a partial exploded view showing how the nozzle attachment and the syringe are coupled together;
Figure 3 is a partial longitudinal sectional view showing details of a coupling system used for coupling the nozzle attachment to the syringe;
FOR A SYRINCiE"
The present invention pertains to improvements in the field of medical care. More particularly, the invention relates to a wound irrigation nozzle attachment for a syringe.
Wounds require irrigation or washing with a fluid such as sterile water, a sterile saline solution or a Ringer lactate solution in order to dislodge any foreign particles contaminating the wound. Various wound irrigation systems are known. One such system comprises a syringe with a plunger movable therein and a one-way valve, a first flexible conduit connecting the valve to a bulk container of fluid for filling the syringe with fluid from the bulk container in response to an outward displacement of the plunger, and a second flexible conduit connected to the syringe for discharging the fluid therefrom onto the wound in response to an inward displacement of the plunger, the valve preventing the outflow of fluid back into the bulk container during the inward displacement of the plunger. Such a wound irrigation system is not only time-consuming to install, but also requires several pieces which add to the cost.
Another type of wound irrigation device is known, which consists of a syringe having; a plunger movable therein and a single tube which serve for both filling the syringe with fluid and discharging the fluid therefrom onto a wound. Since use is made of a single tube having a diameter such as to provide a fluid pressure sufficient to adequately irrigate the wound, the filling operation is difficult and time-consuming.
It is therefore an object of the present invention to overcome the above drawbacks and to provide a wound irrigation nozzle attachment for a syringe, having improved fluid flow characteristics.
In accordance with the invention, there is provided a wound irrigation nozzle attachment for a syringe having an elongated hollow syringe body with a fluid supply chamber defined therein and a plunger movable within the syringe body. The wound irrigation nozzle attachment according to the invention comprises an elongated nozzle body having opposite first and second ends and a fluid passageway extending therebetween, an inlet passage and an outlet passage disposed at the first end of the nozzle body and each in fluid flow communication with the passageway, the inlet and outlet passages having respective free ends disposed adjacent to one another. The nozzle attachment further includes valve means displaceable between open and closed positions, and releasable coupling means arranged at the second end of the nozzle body for releasably connecting the nozzle body to the syringe body to provide fluid flow communication between the passageway a.nd the chamber. When the valve means is in the opf;n position, fluid is conveyable through the inlet passage, the passageway and into the chamber in response to an outward displacement of the plunger within the syringe body and, when the valve means is in the closed position, fluid discharged from the chamber, in response to an inward displacement of the plunger within the syringe body, flows through the passageway and the outlet passage for delivery onto a wound while being prevented by the valve means from flowing from the passageway through the inlet passage.
According to a preferred embodiment of the invention, the releasable coupling means comprises a thread engaging element adapted to threadably engage a complementary threaded member provided at one end of the syringe body. Preferably, the complementary threaded member has an internally threaded terminal portion, which includes a pair of identical threads extending parallel and in a coextensive manner with respect to one another.
The thread engaging element is provided with first and second thread engaging portions adapted to simultaneously engage a. respective one of the pair of threads.
According to another preferred embodiment, the inlet passage is defined outwardly of the outlet passage. Preferably, the inlet passage defines a flow area greater than that of the outlet passage for high flow filling of the chamber during thf; outward displacement of the plunger and for high pressure dispensing of the fluid during the inward displacement of the plunger. The valve means preferably comprises a valve member disposed within the first end of the nozzle body and adapted to be displaced along a longitudinal axis of the first end in response to the displacement of the plunger. The first end has an outwardly converging end section and the valve member has an outwardly converging distal ;section, the outlet passage being defined in the valve member.
In the open position, the valve member is in a retracted position thereof in the first end such that the end section and the distal section are spaced apart thereby defining therebetween the inlet passage, whereas, in the closed position, the valve member is in an extended position thereof in the first end such that the distal section sealingly contacts the end section to thereby close the inlet passage. Preferably, the end section and distal section each have a substantially frusto-conical shape.
According to a further preferred embodiment, inwardly of each of the distal section and the end section, the valve member and the first end define respective concentrically disposed inner and outer cylindrical sections which cooperate together to guide the valve member during inward and outward axial displacements thereof within the first end. The first end preferably defines an inner abutment shoulder at a proximal end of the outer cylindrical section, the abutment shoulder and the end section limiting the inward and outward axial displacements of the valve member. Preferably, the inner cylindrical section of the valve member has peripherally spaced-apart longitudinal outer ribs contacting the outer cylindrical section to guide the valve member within the first end during the inward and outward axial displacements of the valve member, the abutment shoulder being adapted to engage the ribs for limiting the inward axial displacement of the valve member. The inlet passage preferably includes further fluid passageways defined radially between the inner and outer cylindrical sections and circumferentially between the ribs.
According to yet another preferred embodiment, the wound irrigation nozzle attachment further includes fluid splash arresting means mounted on the nozzle body for preventing fluid splashes contaminated by the wound from reaching a user of the wound irrigation nozzle attachment and syringe. Preferably, the fluid arresting means comprises a shield member having an opening defined therethrough, the nozzle body extending through the opening. In a particularly preferred embodiment, the shield member is pivotally mounted on the nozzle body for pivotal movement about a pivot axis extending transversely of the nozzle body, between a storage position whereat the shield member is collapsed against the nozzle body and an operative position whereat the shield member extends away from the nozzle body transversely thereof. A
pair of spaced-apart, longitudinally extending parallel ribs are provided on each of opposite sides of the nozzle body, each pair of ribs defining therebetween a guideway, and a pair of pivot elements extend inwardly of the shield member to engage a respective one of the guideways. Preferably, the pivot elements are slidably displaceable along the guideways so as to be positioned adjacent the first end of the no~:zle body when the shield member is in the operative position or to be positioned at a distance away from the first end when the shield member is in the storage position.
According to a preferred embodiment, the wound irrigation nozzle attachment further includes retainer means for retaining the shield member in the storage or operative position. Preferably, the retainer means comprise a pair of retainer elements extending inwardly of the shield member and adapted to lodge in a respective one of the guideways when the shield member is in the storage position arid to engage an outer surface of a respective one of the ribs when the shield member is in the operative position.
Further features and advantages of the invention will become more readily apparent from the following description of a preferred embodiment as illustrated by way of example in the accompanying drawings, in which:
Figure 1 is a partial bottom perspective view of a wound irrigation nozzle attachment according to a preferred embodiment of the invention, shown coupled to a syringe;
Figure 2 is a partial exploded view showing how the nozzle attachment and the syringe are coupled together;
Figure 3 is a partial longitudinal sectional view showing details of a coupling system used for coupling the nozzle attachment to the syringe;
Figure 4 is a bottom perspective view of the wound irrigation nozzle attachment illustrated in Fig. 1;
Figure 5 is a partial longitudinal sectional view of the nozzle attachment illustrated in Fig. 4, showing one end thereof and a valve member thereof in its open position;
Figure 6 is a sectional view taken along line 6-6 of Fig. 5;
Figure 7 is a view similar to Fig. 5, but showing the valve member in its closed position;
Figure 8 is a side elevational view of the nozzle attachment illustrated in Fig. 4, showing a shield member thereof in its storage position;
Figure 9 is a view similar to Fig. 8, but showing the shield member thereof in its operative position; and Figure 10 is an end view of the nozzle attachment illustrated in Fig. 9, taken from the right-hand side of Fig. 9.
Referring first to Figs 1-3, there is illustrated a wound irrigation nozzle attachment 10 coupled to a syringe 12 having an elongated hollow body 14 with a fluid supply chamber 16 defined therein and a plunger 18 movable within the body 14, the plunger 18 being provided with a rubber seal member 20. The nozzle attachment 10 comprises an elongated body 22 having a fluid passageway 24 (shown in Fig. 3) extending between the ends thereof, a main portion 26 and a cylindrical end portion 28 (shown in Figs. 2 and 3). The main portion 26 of the body 22 is provided at its distal end with a head member 30.
As shown in Fig. 1, the head member 30 has an opening 32 and houses a movable valve member 34.
As shown in Figures 2 and 3, the syringe 12 is provided with an internally double-threaded member 36 extending longitudinally outwardly from the syringe body 14 and having an inner supply conduit 38 in fluid flow communication with the chamber 16. The member 36 is provided with a pair of continuous helical lands 40,40' forming a pair of continuous helical grooves 42,42'. The lands 40,40' and grooves 42,42' are coextensive and surround the supply conduit 38. The cylindrical end portion 28 of the nozzle body 22, on the other hand, is provided with a pair of thread engaging elements 44,44' extending laterally outwardly from the distal end of the cylindrical portion 28.
Coupling of the nozzle body 22 to the syringe body 14 is achieved by inserting the thread engaging elements 44,44' of the cylindrical end portion 28 into the grooves 42,42' of the member 36 and rotating the nozzle attachment 10 and syringe 12 relative: to one another, the elements 44,44' occupying the coupling position shown in Fig. 3. In such a position, the supply conduit 38 extends into the cylindrical end portion 28 in fluid tight engagement therewith. To this end, the supply conduit tapers longitudinally outwardly. Thus, when the nozzle body 22 is coupled to the syringe body 14, fluid slow communication is provided between the passageway 24 and the chamber 16.
As shown in Figures S-7, the main portion 26 of the nozzle body 22 and the head member 30 are sealingly connected using overlapping mating ends and an O-ring; 46 disposed therebetween. 'The valve member 34 is movable within the head mf;mber 30 along the longitudinal axis 48 thereof, between the open position illustrated in Fig. 5 and the closed position illustrated in Fig. 7, in response to the displacement of the plunger 18, The head member 30 comprises a cylindrical section 50 and an outwardly converging end section 52. The valve member 34, on the other hand, comprises a cylindrical section 54 and an outwardly converging distal section 56 and has an orifice 58 formed therein, the orifice 58 defining an outlet passage. The end section 52 and the distal section 56 each have substantially a frusto-conical shape. In the open position shown in Fig. 5, the valve member 34 is in a retracted position thereof in the head member 30 such that the end section 52 and the distal section 56 are spaced apart, thereby defining therebetween an inlet passage 60. In the closed position shown in Fig. 7, the valve member 34 is in an extended position thereof in the head member 30 such that the distal section 56 sealingly contacts the end section 52 to thereby close the inlet passage 60. In such a position, the distal section 56 extends through the opening 32.
Figure 5 is a partial longitudinal sectional view of the nozzle attachment illustrated in Fig. 4, showing one end thereof and a valve member thereof in its open position;
Figure 6 is a sectional view taken along line 6-6 of Fig. 5;
Figure 7 is a view similar to Fig. 5, but showing the valve member in its closed position;
Figure 8 is a side elevational view of the nozzle attachment illustrated in Fig. 4, showing a shield member thereof in its storage position;
Figure 9 is a view similar to Fig. 8, but showing the shield member thereof in its operative position; and Figure 10 is an end view of the nozzle attachment illustrated in Fig. 9, taken from the right-hand side of Fig. 9.
Referring first to Figs 1-3, there is illustrated a wound irrigation nozzle attachment 10 coupled to a syringe 12 having an elongated hollow body 14 with a fluid supply chamber 16 defined therein and a plunger 18 movable within the body 14, the plunger 18 being provided with a rubber seal member 20. The nozzle attachment 10 comprises an elongated body 22 having a fluid passageway 24 (shown in Fig. 3) extending between the ends thereof, a main portion 26 and a cylindrical end portion 28 (shown in Figs. 2 and 3). The main portion 26 of the body 22 is provided at its distal end with a head member 30.
As shown in Fig. 1, the head member 30 has an opening 32 and houses a movable valve member 34.
As shown in Figures 2 and 3, the syringe 12 is provided with an internally double-threaded member 36 extending longitudinally outwardly from the syringe body 14 and having an inner supply conduit 38 in fluid flow communication with the chamber 16. The member 36 is provided with a pair of continuous helical lands 40,40' forming a pair of continuous helical grooves 42,42'. The lands 40,40' and grooves 42,42' are coextensive and surround the supply conduit 38. The cylindrical end portion 28 of the nozzle body 22, on the other hand, is provided with a pair of thread engaging elements 44,44' extending laterally outwardly from the distal end of the cylindrical portion 28.
Coupling of the nozzle body 22 to the syringe body 14 is achieved by inserting the thread engaging elements 44,44' of the cylindrical end portion 28 into the grooves 42,42' of the member 36 and rotating the nozzle attachment 10 and syringe 12 relative: to one another, the elements 44,44' occupying the coupling position shown in Fig. 3. In such a position, the supply conduit 38 extends into the cylindrical end portion 28 in fluid tight engagement therewith. To this end, the supply conduit tapers longitudinally outwardly. Thus, when the nozzle body 22 is coupled to the syringe body 14, fluid slow communication is provided between the passageway 24 and the chamber 16.
As shown in Figures S-7, the main portion 26 of the nozzle body 22 and the head member 30 are sealingly connected using overlapping mating ends and an O-ring; 46 disposed therebetween. 'The valve member 34 is movable within the head mf;mber 30 along the longitudinal axis 48 thereof, between the open position illustrated in Fig. 5 and the closed position illustrated in Fig. 7, in response to the displacement of the plunger 18, The head member 30 comprises a cylindrical section 50 and an outwardly converging end section 52. The valve member 34, on the other hand, comprises a cylindrical section 54 and an outwardly converging distal section 56 and has an orifice 58 formed therein, the orifice 58 defining an outlet passage. The end section 52 and the distal section 56 each have substantially a frusto-conical shape. In the open position shown in Fig. 5, the valve member 34 is in a retracted position thereof in the head member 30 such that the end section 52 and the distal section 56 are spaced apart, thereby defining therebetween an inlet passage 60. In the closed position shown in Fig. 7, the valve member 34 is in an extended position thereof in the head member 30 such that the distal section 56 sealingly contacts the end section 52 to thereby close the inlet passage 60. In such a position, the distal section 56 extends through the opening 32.
The cylindrical section 54 of the valve member 34 has a plurality of peripherally spaced-apart longitudinal outer ribs 62 contacting the cylindrical section 50 of the head member 30 to guide 'the valve member 34 within the head member 30 during the inward and outward axial displacements of the valve member 34. The main portion 26 of the nozzle body 22 defines at its distal end an annular abutment shoulder 64 adapted to engage the ribs 62 for limiting the inward axial displacement of the valve member 34. A plurality of fluid passageways 66 are defined radially between the cylindrical sections SO
and 54 and circumferentially between the ribs 62, and provide fluid flow communication between the inlet passage 60 and the passageway 24 when the valve member 34 is in the open position.
In operation, the distal end of the nozzle attachment 10 is inserted into a bulk container (not shown) of fluid so that the opening 32 of the head member 30 is immersed into the fluid, and the plunger 18 of the syringe 12 is displaced outwardly to draw fluid from the container, thereby causing the valve member 34 to move to the open position, the fluid flowing through the inlet passage 60 (and possibly also through the orifice 58), through fluid passageways 66 and then through fluid passageway 24 into the chamber 16 to fill same. The head member 30 is then removed from the bulk container and directed towards a wound to be irrigated, and the plunger 18 is displaced inwardly within the syringe body 14 to cause the fluid to flow from the chamber 16 through the passageway 24 and the orifice 58 so as to be discharged under pressure therefrorr~ onto the wound. This flow of fluid also exerts pressure against the valve rr~ember 34, thereby moving same to the closed position.
As shown in Figures 1, 4 and 8-10, a shield member 68 is mounted on the rr.~ain portion 26 of the nozzle body 22 for preventing fluid splashes contaminated by the wound from reaching a user of the nozzle attachment 10 and syringe 12 during the inward displacement of the plunger 18.
The shield member 68 has a fluid splash arresting wall 70 with a peripheral flange 72 and an opening 74 through which extends the main portion 26 of the nozzle body 22. The member 68 is pivotally mounted on the main portion 26 for pivotal movement about a pivot axis (not shown) extending transversely of the portion 26, between the storage position illustrated in Fig. 8, whereat the shield member 68 is collapsed against the main portion 26, and the operative position illustrated in Fig. 9, whereat the shield member 68 extends away from the portion 26 transversely thereof. The wall 70 has an elongate recessed portion 76 which :is integrally formed therewith and adapted to receive part of the main portion 26 of the nozzle body 22 when the shield member 68 is in the storage position. The wall 70 has also a cut-out portion or notch 78 for the same purpose.
As shown in Figures 1, 4, 8 and 9, a pair of spaced-apart, longitudinally extending ribs 80,80' are provided on each of opposite sides of the main portion 2.6 of the nozzle body 22, the ribs 80 and 80' being joined at their distal end to define a stop 82. The ribs 80 and 80' also define therebetween a guideway 84. A pair of pivot elements 86 extend inwardly of the recessed portion 76 and engage a respective one oi' the guideways 84. The pivot elements 86 are slidably displaceable along the guideways 84 so as to abut against the stops 82 when the shield member 68 is in the operative position, or to be positioned at a distance away from the stops 82 when the shield member 68 is in the storage position. A pair of retainer elements 88 extends inwardly of the recessed portion 76 and are adapted to lodge in a respective one of the guideways 84 for retaining the shield member 68 in the storage position, or to engage an outer surface 90 (shown in Fig. 9) of a respective one of the ribs 80' for retaining the shield member 68 in the operative position. The shield member 68 is pivotally moved between the storage and operative positions and is effected by manipulating the member 68 so as to force the retainer elements 88 to pass over the ribs 80' and to either lodge in the guideways 84 or engage the outer surfaces 90, in a snapping action.
_g_
and 54 and circumferentially between the ribs 62, and provide fluid flow communication between the inlet passage 60 and the passageway 24 when the valve member 34 is in the open position.
In operation, the distal end of the nozzle attachment 10 is inserted into a bulk container (not shown) of fluid so that the opening 32 of the head member 30 is immersed into the fluid, and the plunger 18 of the syringe 12 is displaced outwardly to draw fluid from the container, thereby causing the valve member 34 to move to the open position, the fluid flowing through the inlet passage 60 (and possibly also through the orifice 58), through fluid passageways 66 and then through fluid passageway 24 into the chamber 16 to fill same. The head member 30 is then removed from the bulk container and directed towards a wound to be irrigated, and the plunger 18 is displaced inwardly within the syringe body 14 to cause the fluid to flow from the chamber 16 through the passageway 24 and the orifice 58 so as to be discharged under pressure therefrorr~ onto the wound. This flow of fluid also exerts pressure against the valve rr~ember 34, thereby moving same to the closed position.
As shown in Figures 1, 4 and 8-10, a shield member 68 is mounted on the rr.~ain portion 26 of the nozzle body 22 for preventing fluid splashes contaminated by the wound from reaching a user of the nozzle attachment 10 and syringe 12 during the inward displacement of the plunger 18.
The shield member 68 has a fluid splash arresting wall 70 with a peripheral flange 72 and an opening 74 through which extends the main portion 26 of the nozzle body 22. The member 68 is pivotally mounted on the main portion 26 for pivotal movement about a pivot axis (not shown) extending transversely of the portion 26, between the storage position illustrated in Fig. 8, whereat the shield member 68 is collapsed against the main portion 26, and the operative position illustrated in Fig. 9, whereat the shield member 68 extends away from the portion 26 transversely thereof. The wall 70 has an elongate recessed portion 76 which :is integrally formed therewith and adapted to receive part of the main portion 26 of the nozzle body 22 when the shield member 68 is in the storage position. The wall 70 has also a cut-out portion or notch 78 for the same purpose.
As shown in Figures 1, 4, 8 and 9, a pair of spaced-apart, longitudinally extending ribs 80,80' are provided on each of opposite sides of the main portion 2.6 of the nozzle body 22, the ribs 80 and 80' being joined at their distal end to define a stop 82. The ribs 80 and 80' also define therebetween a guideway 84. A pair of pivot elements 86 extend inwardly of the recessed portion 76 and engage a respective one oi' the guideways 84. The pivot elements 86 are slidably displaceable along the guideways 84 so as to abut against the stops 82 when the shield member 68 is in the operative position, or to be positioned at a distance away from the stops 82 when the shield member 68 is in the storage position. A pair of retainer elements 88 extends inwardly of the recessed portion 76 and are adapted to lodge in a respective one of the guideways 84 for retaining the shield member 68 in the storage position, or to engage an outer surface 90 (shown in Fig. 9) of a respective one of the ribs 80' for retaining the shield member 68 in the operative position. The shield member 68 is pivotally moved between the storage and operative positions and is effected by manipulating the member 68 so as to force the retainer elements 88 to pass over the ribs 80' and to either lodge in the guideways 84 or engage the outer surfaces 90, in a snapping action.
_g_
Claims (21)
1. A wound irrigation nozzle attachment for a syringe having an elongated hollow syringe body with a fluid supply chamber defined therein and a plunger movable within the syringe body, said wound irrigation nozzle attachment comprising:
an elongated nozzle body having opposite first and second ends and a fluid passageway extending therebetween;
an inlet passage and an outlet passage disposed at the first end of said nozzle body and each in fluid flow communication with said passageway, said inlet and outlet passages having respective free ends disposed adjacent to one another;
valve means displaceable between open and closed positions; and releasable coupling means arranged at the second end of said nozzle body for releasably connecting said nozzle body to said syringe body to provide fluid flow communication between said passageway and said chamber;
whereby, when said valve means is in said open position, fluid is conveyable through said inlet passage, said passageway and into said chamber in response to an outward displacement of said plunger within said syringe body and, when said valve means is in said closed position, fluid discharged from said chamber, in response to an inward displacement of said plunger within said syringe body, flows through said passageway and said outlet passage for delivery onto a wound while being prevented by said valve means from flowing from said passageway through said inlet passage.
an elongated nozzle body having opposite first and second ends and a fluid passageway extending therebetween;
an inlet passage and an outlet passage disposed at the first end of said nozzle body and each in fluid flow communication with said passageway, said inlet and outlet passages having respective free ends disposed adjacent to one another;
valve means displaceable between open and closed positions; and releasable coupling means arranged at the second end of said nozzle body for releasably connecting said nozzle body to said syringe body to provide fluid flow communication between said passageway and said chamber;
whereby, when said valve means is in said open position, fluid is conveyable through said inlet passage, said passageway and into said chamber in response to an outward displacement of said plunger within said syringe body and, when said valve means is in said closed position, fluid discharged from said chamber, in response to an inward displacement of said plunger within said syringe body, flows through said passageway and said outlet passage for delivery onto a wound while being prevented by said valve means from flowing from said passageway through said inlet passage.
2. A wound irrigation nozzle attachment as claimed in claim 1, wherein said releasable coupling means comprises a thread engaging element adapted to threadably engage a complementary threaded member provided at one end of said syringe body.
3. A wound irrigation nozzle attachment as claimed in claim 2, wherein said complementary threaded member has an internally threaded terminal portion, said threaded terminal portion including a pair of identical threads extending parallel and in a coextensive manner with respect to one another, and wherein said thread engaging element is provided with first and second thread engaging portions adapted to simultaneously engage a respective one of said pair of threads.
4. A wound irrigation nozzle attachment as claimed in claim 3, wherein said threaded terminal portion surrounds a supply conduit of the syringe, said supply conduit being in fluid flow communication with said chamber, and wherein said nozzle body has a cylindrical portion at said second end thereof and said first and second thread engaging portions of said thread engaging element extend laterally outwardly from a distal end of said cylindrical portion, said cylindrical portion being adapted to receive said supply conduit in fluid tight engagement when said thread engaging element and said complementary threaded member are engaged with one another.
5. A wound irrigation nozzle attachment as claimed in claim 1, wherein said inlet passage defines a flow area greater than that of said outlet passage for high flow filling of said chamber during said outward displacement of said plunger and for high pressure dispensing of the fluid during said inward displacement of said plunger.
6. A wound irrigation nozzle attachment as claimed in claim 1, wherein said inlet passage is defined outwardly of said outlet passage.
7. A wound irrigation nozzle attachment as claimed in claim 6, wherein said valve means comprises a valve member disposed within said first end of said nozzle body and adapted to be displaced along a longitudinal axis of said first end in response to the displacement of said plunger.
8. A wound irrigation nozzle attachment as claimed in claim 7, wherein said first end has an outwardly converging end section and said valve member has an outwardly converging distal section, said outlet passage being defined in said valve member, whereby, in said open position, said valve member is in a retracted position thereof in said first end such that said end section and said distal section are spaced-apart thereby defining therebetween said inlet passage, whereas, in said closed position, said valve member is in an extended position thereof in said first end such that said distal section sealingly contacts said end section to thereby close said inlet passage.
9. A wound irrigation nozzle attachment as claimed in claim 8, wherein said end section and said distal section each have a substantially frusto-conical shape.
10. A wound irrigation nozzle attachment as claimed in claim 8, wherein inwardly of each of said distal section and said end section, said valve member and said first end define respective concentrically disposed inner and outer cylindrical sections which cooperate together to guide said valve member during inward and outward axial displacement thereof within said first end.
11. A wound irrigation nozzle attachment as claimed in claim 10, wherein said one end defines an inner abutment shoulder at a proximal end of said outer cylindrical section, said abutment shoulder and said end section limiting the inward and outward axial displacements of said valve member.
12. A wound irrigation nozzle attachment as claimed in claim 11, wherein said inner cylindrical section of said valve member has peripherally spaced-apart longitudinal outer ribs contacting said outer cylindrical section to guide said valve member within said distal end during said inward and outward axial displacements of said valve member, said abutment shoulder being adapted to engage said ribs for limiting the inward axial displacement of said valve member.
13. A wound irrigation nozzle attachment as claimed in claim 12, wherein said inlet passage includes further fluid passageways defined radially between said inner and outer cylindrical sections and circumferentially between said ribs.
14. A wound irrigation nozzle attachment as claimed in claim 1, further including fluid splash arresting means mounted on said nozzle body for preventing fluid splashes contaminated by said wound from reaching a user of said wound irrigation nozzle attachment and said syringe during inward displacement of said plunger.
15. A wound irrigation nozzle attachment as claimed in claim 14, wherein said fluid arresting means comprises a shield member having an opening defined therethrough and wherein said nozzle body extends through said opening.
16. A wound irrigation nozzle attachment as claimed in claim 15, wherein said shield member is pivotally mounted on said nozzle body for pivotal movement about a pivot axis extending transversely of said nozzle body, between a storage position whereat said shield member is collapsed against said nozzle body and an operative position whereat said shield member extends away from said nozzle body transversely thereof.
17. A wound irrigation nozzle attachment as claimed in claim 16, wherein said shield member has an elongate recessed portion adapted to receive part of said nozzle body when said shield member is in said storage position.
18. A wound irrigation nozzle attachment as claimed in claim 16, wherein a pair of spaced-apart, longitudinally extending parallel ribs are provided on each of opposite sides of said nozzle body, each pair of ribs defining therebetween a guideway, and wherein a pair of pivot elements extend inwardly of said shield member and engage a respective one of said guideways.
19. A wound irrigation nozzle attachment as claimed in claim 18, wherein said pivot elements are slidably displaceable along said guideways so as to be positioned adjacent said first end of said nozzle body when said shield member is in said operative position or to be positioned at a distance away from said first end when said shield member is in said storage position.
20. A wound irrigation nozzle attachment as claimed in claim 19, further including retainer means for retaining said shield member in said storage or operative position.
21. A wound irrigation nozzle attachment as claimed in claim 20, wherein said retainer means comprise a pair of retainer elements extending inwardly of said shield member and adapted to lodge in a respective one of said guideways when said shield member is in said storage position and to engage an outer surface of a respective one of said ribs when said shield member is in said operative position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002314588A CA2314588A1 (en) | 1999-07-28 | 2000-07-27 | Wound irrigation nozzle attachment for a syringe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA2,278,968 | 1999-07-28 | ||
| CA002278968A CA2278968A1 (en) | 1998-07-28 | 1999-07-28 | Wound irrigation device |
| CA002314588A CA2314588A1 (en) | 1999-07-28 | 2000-07-27 | Wound irrigation nozzle attachment for a syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2314588A1 true CA2314588A1 (en) | 2001-01-28 |
Family
ID=25681084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002314588A Abandoned CA2314588A1 (en) | 1999-07-28 | 2000-07-27 | Wound irrigation nozzle attachment for a syringe |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2314588A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114206420A (en) * | 2019-06-11 | 2022-03-18 | 新鼻窦健康公司 | Device and method for delivering fluid to nasal cavity |
-
2000
- 2000-07-27 CA CA002314588A patent/CA2314588A1/en not_active Abandoned
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114206420A (en) * | 2019-06-11 | 2022-03-18 | 新鼻窦健康公司 | Device and method for delivering fluid to nasal cavity |
| US12053575B2 (en) | 2019-06-11 | 2024-08-06 | Neosinus Health Inc. | Devices and methods for delivering fluid to a nasal cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |