WO2023129003A2

WO2023129003A2 - An intravenous cannula with closure element

Info

Publication number: WO2023129003A2
Application number: PCT/TR2022/051246
Authority: WO
Inventors: Umut Emrah KOCATUFEK
Original assignee: Bicakcilar Tibbi Cihazlar Sanayi Ve Ticaret A.S.
Priority date: 2021-12-29
Filing date: 2022-11-04
Publication date: 2023-07-06
Also published as: TR2021021613A2; WO2023129003A3

Abstract

The invention relates to an intravenous cannula (10) comprising at least one needle (11) for establishing vascular access by inserting it on at least one branule (30), at least one sticking portion (111) and at least one slider portion (112) on the needle (11) for allowing sticking, and at least one knob (113) between the said slider portion (112) and the sticking portion (111). The novelty of the invention is that for preventing the needle (11) from causing unwanted injuries and contamination; at least one closure element (20) positioned on the needle (11) comprises at least one first part (21) and at least one second part (22), at least one stopping plate (24) positioned to move by leaning the knob (113) portion of the needle (11) in at least one inner cavity (23) provided between the said first part (21) and the said second part (22), at least one locking element (25) for preventing the sticking part (111) from moving backward by leaning the knob (113) portion of the needle (11) against the said stopping plate (24), and is configured to engage at least one male portion (243) into at least one female portion (222) on the second part (22) through the movement of stopping plate (24).

Description

AN INTRAVENOUS CANNULA WITH CLOSURE ELEMENT

TECHNICAL FIELD

The invention relates to an intravenous cannula comprising at least one needle for establishing vascular access by inserting it on at least one branule, at least one sticking portion and at least one slider portion on the needle for allowing sticking, and at least one knob between the said slider portion and the sticking portion

BACKGROUND OF THE INVENTION

A branule is a medical device that is used to establish vascular access, draw blood, and administer serum and other similar fluids intravenously. The needle inserted into the branule using intravenous cannulas (IV cannula) is used to establish vascular access. The branule, due to its structural feature, provides a flow channel between the vessel and the external environment without causing tissue or vessel damage.

Vascular access is established using IV cannulas during the process of establishing vascular access. The branule and IV cannula are then detached, and the branule's function is complete. During this procedure, the needle tip of the IV cannula remains exposed, causing the healthcare professional to sustain unintended injury. Microorganisms in the blood of the patient whose vascular access is established can also be transmitted to the personnel who conduct the process of establishing vascular access as a result of unintended needle sticks. As a result, protected IV cannulas have been employed in the current procedure.

Application No. TR2412/03979 which is known in the literature relates to a needle tip protection system with a lower jaw arm and an upper jaw arm to prevent needle tip injuries, which comprises a stopping wall in this tip protection system, which allows the tip protection apparatus to be connected to the needle during the withdrawal of the needle and to be removed from the cannula carrier together with the needle, a lower jaw and an upper jaw that move toward each other during removal of the said needle from the cannula carrier to close the needle tip, and a needle tip protection system comprising a lower wing and an upper wing that compress in the cannula carrier during insertion of said tip protection system into the cannula carrier to open said lower jaw and upper jaw and allow the needle to move forward. Currently, there are numerous needle tip protection devices available to prevent needle tip injuries. The needle tip protection apparatus in the current art has various drawbacks. These protection products can generate friction by exerting pressure on the needle. Furthermore, the existing tip protection devices frequently require the installation of an additional auxiliary device and cannot be utilized properly. Additionally, while attempts have been made to prevent the needle from sticking in the structures in the current art, an issue such as blood at the tip of the needle contacting the health personnel may occur. This raises the possibility of transmission even in the absence of a needle stick.

As a result, the aforementioned issues have made it necessary to make an innovation in the related technical field.

BRIEF DESCRIPTION OF THE INVENTION

The present invention relates to an intravenous cannula that eliminates the aforementioned drawbacks and brings new advantages to the related technical field.

One of the objectives of the invention is to provide an intravenous cannula for preventing undesired needle sticking problems in the process of establishing vascular access.

An additional objective of the invention is to produce an intravenous cannula with a better esthetic posture during closure.

Another objective of the invention is to offer an intravenous cannula that prevents contamination of the needle tip by body fluids such as blood in the process of establishing vascular access.

In order to achieve all the objectives mentioned above and will emerge from the following detailed description, the present invention is an intravenous cannula comprising at least one needle for establishing vascular access by inserting on at least one branule, at least one sticking portion and at least one slider portion on the needle for allowing sticking, and at least one knob between the said slider portion and the sticking portion. Accordingly, its novelty is that for preventing the needle from causing unwanted injuries and contamination; at least one closure element positioned on the needle comprises at least one first part and at least one second part, at least one stopping plate positioned to move by leaning the knob portion of the needle in at least one inner cavity provided between the said first part and the said second part, at least one locking element for preventing the sticking part from moving backward by leaning the knob portion of the needle against the said stopping plate, and is configured to engage at least one male portion into at least one female portion on the second part through the movement of stopping plate. This ensures that the closure element can close the needle tip of the intravenous cannula and that it is held in the needle's direction throughout this closure. Furthermore, the risk of pricking the needle used to open the intravenous cannula and contamination by body fluids such as blood present at the tip of the needle are removed.

A possible embodiment of the invention is characterized in that said male and female portions are at least partially conical in shape to fit together.

Another possible embodiment of the invention is characterized in that the stopping comprises at least one outer layer.

Another possible embodiment of the invention is characterized in that it comprises at least one mount for placing the locking element relative to the needle.

Another possible embodiment of the invention is characterized in that it comprises at least one flexing form for flexing the locking element.

Another possible embodiment of the invention is characterized in that the locking element rests on the needle in a radial direction and it is configured to cover the extension direction of the needle by moving linearly in the radial direction by resting against the needle stopping plate for locking the needle.

BRIEF DESCRIPTION OF THE FIGURES

Figure 1 illustrates a representative perspective view of the intravenous cannula of the invention and the branule in which it is inserted.

Figure 2 illustrates an exploded view of the intravenous cannula of the invention and the branule in which it is inserted.

Figure 3 illustrates a representative exploded view of the closure element of the intravenous cannula of the invention. Figure 4 illustrates a representative perspective view of the closure element of the intravenous cannula of the invention.

Figure 5 illustrates another representative perspective view of the closure element of the intravenous cannula of the invention.

DETAILED DESCRIPTION OF THE INVENTION

In this detailed description, the subject matter of the invention is described through examples that have no limiting effect for a better understanding of the subject.

Referring to Figures 1 and 2, the invention relates to an intravenous cannula (10). The intravenous cannula (10) of the invention is utilized to establish vascular access with at least one branule (30). Once vascular access has been established in blood collection and serum connection operations, the stated branule (30) has a structure that permits varied materials to be connected and a different process to be conducted without re-puncture in the same spot. There is at least one connection body (31) on the branule (30). There is at least one slot (32) for the connection of at least one intravenous cannula (10) on that connection body (31). The vascular access is established by inserting the intravenous cannula (10) into the slot (32) that was created to match its shape. The slot (32) is located on one side of the connection body (31 ) on the branule (30), whereas at least one needle shell is located on the opposite side. When the intravenous cannula (10) is introduced into the slot (32), the needle shell at least partially encloses a needle (11) provided at the tip of the intravenous cannula (10). The needle shell also enters the vessel when the needle (11 ) is inserted. A cover (33) is further included with the branule (30) to conceal the needle shell. The cover (33) acts as a cap to preserve the branule's (30) sterility before application.

An exemplary exploded view of the closure element (20) of the intravenous cannula (10) of the invention is illustrated in Figure 3. Accordingly, after establishing vascular access, the intravenous cannula (10) is designed to cover the needle's tip (11). Unwanted needle (11 ) sticking issues can be avoided in this approach. The intravenous cannula (10) is connected to at least one closure element for this purpose (20). The closure element (20) is configured to fit at least partially into the slot (32) on the branule (30).

The closure element (20) ensures the intravenous cannula (10) is closed by retaining the needle (11) tip during separation from the branule (30). For this closure element (20) to operate, the needle (11) must have at least one knob (113). This knob (113) allows the closure element (20) to be secured to it. The needle (11) comprises two main components. The knob (113) serves as a separator between these two components. The side of the needle (11 ) that faces the branule (30) through the knob (113) is a sticking portion (111 ), whereas the other side is a slider portion (112). The sticking portion (111) is the part of the needle (11) that begins to penetrate the human body. The slider portion (112) makes sure that the flow channel inside the needle (11) is completed.

Figure 4 depicts an exemplary perspective view of the closure element (20) of the intravenous cannula (10) of the invention. Accordingly, the closure element (20) comprises at least one first part (21) and at least one second part (22). Between the first part (21) and said second part (22) is supplied at least one inner cavity (23). The first part (21) is positioned on the side of the closure element (20) that faces the branule (30). The inner cavity (23) is primarily provided by the first part (21). The second part (22) is attached to the closure element (20) on the side facing the intravenous cannula (10). The first part (21) and the second part (22) are attached in a manner that can be reassembled.

At least one stopping plate (24) can be placed between the first part (21) and the second part (22). The stopping plate (24) is positioned in the inner cavity (23) and has free movement along the inner cavity (23). The knob (113) advances the stopping plate (24) towards the second part (22) if the sticking portion (111 ) of the needle (11 ) protrudes from the branule (30).

On the first part (21), the second part (22), and the stopping plate (24), the closure element (20) has at least one through hole. The needle (11) is inserted through the previously described through holes. In order to establish vascular access, the needle (11) is therefore stretched on the closure element (20). The through holes are formed to have various hole diameters. There is at least one first through hole (211) in the first part (21), at least one plate through hole (241 ) in the stopping plate (24), and at least one second through hole (221) in the second part (22). The first through hole (211 ) is formed to allow the needle (11) to smoothly pass through the knob (113). The plate through hole (241 ) is formed to restrict the passage of the needle's (11 ) knob (113). The second through hole (221 ) is formed to allow at least part of the stopping plate (24) to be inserted therein.

The stopping plate (24) has at least one outer layer (242) that wraps around the plate through hole (241 ). The outer layer (242) supplies the stopping plate (24) with strength during needle (11) movement. The outer layer (242) is primarily formed of metallic material for this purpose. Thus, the knob (113) of the needle (11) is held by leaning against the outer layer (242) in the stopping plate (24). For this reason, the outer layer (242) could be an element formed in line with the needle's (11 ) diameter. The needle (11) is held in place by the outer layer (242). Therefore, it may also be made of a metallic or non-metallic material in alternate embodiments. At least one male portion (243) is supplied on the side of the stopping plate (24) facing the second part (22). At least one female portion (222) is present on the side of the second part (22) facing the stopping plate (24). The male portion (243) and female portion (222) are designed to engage each other at least partially. The male portion (243) is positioned around the plate through hole (241) in the stopping plate (24), while the female portion (222) is positioned around the second through-hole (221) in the second part (22). The male portion (243) and female portion (222) are virtually conical conjugates. Thus, the needle (11 ) advances the stopping plate (24) into the inner cavity (23) to engage the second part (22). If the needle (11) is separated from the branule (30), the closure element (20) can be held without bending or twisting in the extension direction of the needle (11).

Figure 5 depicts another exemplary perspective view of the closure element (20) of the intravenous cannula (10) of the invention. Therefore, at least one locking element (25) is positioned between the first part (21) and the second part (22). This locking element (25) can flex at least partially. Preferably, the locking element (25) is positioned on the first part (21). The locking element (25) is recessed in the radial direction of the needle (11). When the locking element (25) is resting in this manner, it is at least partially compressed. When the locking element (25) is placed on the stopping plate (24) at the needle's (11) knob (113), the locking element (25) travels in a radial way relative to the needle (11), closing the extension direction of the needle (11). Hence, the front of the sticking portion (111 ) of the needle (11) is also closed, preventing the needle (11) from sliding backward.

There is at least one mount (251 ) included on the locking element (25). When the locking element (251) is at least partially compressed by the user when the locking element (25) is placed on the first part (21 ). The mount (251) on the locking element (25) extends at least partially through a hole in the first part (21) for this purpose. The locking element (25) possesses a flexing form (252) for bending. This flexing form (252) is essentially in the shape of an "S". Thus, in the locking element (25), the S-shaped edges lean against one another and enable movement. There is at least one abutment wall (253) in the locking element (25). This abutment wall (253) is the part of the locking element (25) that comes into contact with the lateral surface of the needle (11). The locking element (25) flexes and stops the needle (11) in the direction of its extension if the abutment wall (253) is separated from the needle (11)- In a possible embodiment of the invention, the intravenous cannula (10) is inserted into the slot (32) on the branule (30) through the closure element (20). The needle (11) is also inserted into the needle shell during this procedure. The patient is subsequently subjected to the procedure of establishing vascular access. The intravenous cannula (10) is detached from the branule once vascular access is established (30). As the needle (11) retracts, it leaves the first through hole (211) and abuts the plate through hole (241) through the knob (113). In the meantime, the stopping plate (24) is transferred to the second part (22) by the knob (113). With this movement of the needle (11 ), the locking element (25) also flexes, preventing the sticking portion (111) from moving backward in the extension direction. The closure element (20) is offered to seal the needle tip (11 ). The male portion (243) and the female portion (222) also ensure that the closure element (20) can be held in the direction of the needle (11 ) extension.

All of this structuring prevents issues such as needle (11 ) tip sticking or contamination by a body fluid such as blood that may be on the needle (11) during procedures such as establishing vascular access, drawing blood, and administering serum. Furthermore, aesthetic concerns are avoided by orienting the closure element (20) in the direction of the needle (11 ). The need for additional compression and stretching elements is avoided during the procedure of obtaining this structure, resulting in a structure that is easier to install and safer to operate.

The scope of protection for the invention is specified in the attached claims and is not limited to what is stated in this detailed description for illustrative purposes. This is because it is evident that a person versed in the technique can create similar structures in light of the above without diverging from the invention's core concept.

REFERENCE NUMBERS GIVEN IN THE FIGURE

10 Intravenous Cannula

11 Needle

111 Sticking Portion

112 Slider Portion

113 Knob

20 Closure Element

21 First Part

211 First Through Hole

22 Second Part

221 Second Through Hole

222 Female Portion

23 Inner Cavity

24 Stopping Plate

241 Plate Through Hole

242 Outer Layer

243 Male Portion

25 Locking Element

251 Mount

252 Flexing Form

253 Abutment Wall

30 Branule

31 Connection Body

32 Slot

33 Cover

Claims

1. An intravenous cannula (10), comprising at least one needle (11 ) for establishing vascular access by inserting on at least one branule (30), at least one sticking portion (111 ) and at least one slider portion (112) on the needle (11 ) for allowing sticking, and at least one knob (113) between the said slider portion (112) and the sticking portion (111 ); characterized in that for preventing the needle (11) from causing unwanted injuries and contamination; at least one closure element (20) positioned on the needle (11 ) comprises at least one first part (21) and at least one second part (22), at least one stopping plate (24) positioned to move by leaning the knob (113) portion of the needle (11 ) in at least one inner cavity (23) provided between the said first part (21) and the said second part (22), at least one locking element (25) for preventing the sticking part (111 ) from moving backward by leaning the knob (113) portion of the needle (11) against the said stopping plate (24), and is configured to engage at least one male portion (243) into at least one female portion (222) on the second part (22) through the movement of the stopping plate (24).

2. An intravenous cannula (10) according to claim 1 , characterized in that it comprises at least one mount (251 ) for positioning the locking element (25) relative to the needle (11).

3. An intravenous cannula (10) according to claim 1 , characterized in that it comprises at least one flexing form (252) for bending the locking element (25).

4. An intravenous cannula (10) according to claim 1 , characterized in that the locking element (25) rests on the needle (11) in a radial direction and it is configured to cover the extension direction of the needle (11 ) by moving linearly in the radial direction by resting against the needle stopping plate (24) for locking the needle (11).

5. An intravenous cannula (10) according to claim 1 , characterized in that the said male portion (243) and female portion (222) are at least partially conical forms to engage each other.

6. An intravenous cannula (10) according to claim 1 , characterized in that the stopping plate (24) comprises at least one outer layer (242).

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