JP7095097B2 - Breakerway medical tubing connector - Google Patents

Description

The present disclosure relates generally to tubing connectors for venous medicine. More specifically, the present disclosure relates to automatically sealing the breaker way venous line connector.

The use of medical tubing to transfer liquids to and from the patient is a common practice in the medical setting. Vein techniques and techniques have evolved to the point where many devices associated with venous applications are unobtrusive and patients often forget. Therefore, it is not uncommon for a patient to try physical activity when restricted by a medical tubing and a device connected at each end of the medical tubing. This often results in damage to the patient's access points into the blood vessels, resulting in discomfort, pain, and even danger to the patient. This can result in deep abrasions, lacerations and even bleeding. This is especially dangerous for patients if the access point is a major blood vessel, artery or organ.

When the access point is compromised by accidental physical activity, the patient may bleed as a result, and the liquid that was being collected or introduced by the patient overflows the storage container, making it unsanitary and dangerous. It can be an environment. Patients may panic and try to reestablish connections, but such behavior can be dangerous. The reason is that patients are not trained to play a role in preventing line contamination, although there is a risk of line contamination that can have extremely dangerous consequences for the patient. If the line, insertion point and liquid may be contaminated upon removal and the patient is able to reestablish the line, the patient is potentially pathogen and other contaminants. Is introduced directly into the body. This can result in serious and fatal infections and other serious complications.

Therefore, what is needed is an improvement in the device and method for preventing accidental removal of the venous insertion site and the breaker way connector for medical tubing.

This overview is provided to introduce a selection of concepts in a simplified form, further described below in a detailed description. This summary is not intended to identify the main or essential features of the invention described in the claims and is used as an aid in determining the invention described in the claims. It is not intended to be.

One aspect of the present disclosure is a circuit breaker connector device disposed between two medical tubing devices. Current medical practice generally involves a device or tubing that is inserted into the patient's body, but this device or tubing is a device that exits the patient's body and connects to an external tubing. Presented. Secondary containers of liquid for injection or containers for liquid removal are sometimes equipped with a pumping mechanism along the tubing between the container and the patient. The connection points between these medical tubing segments are of utmost importance. This is because the connection point becomes the entry point for the pathogen. Also, the connection point is usually very close to the patient and therefore close to the insertion site.

The present disclosure allows for a sealed liquid connection between two connections of a medical tubing, but once a particular tension threshold or threshold range is applied before the adhesive or fixation device fails. The tubing sections then disengage from each other, ultimately allowing the adverse event of device removal earlier than expected. Both ends of the device remain attached to their respective sides of the tubing, acting as a protective barrier against external pathogens and blocking the flow of fluid, from the patient or ultimately from the container. Acts as a protective barrier against leaks. The device can only be mounted with special tools that have access to the mechanism for mounting within the device.

Many other objects, advantages and features of the present disclosure will be readily apparent to those of skill in the art by looking at the drawings below and the description of preferred embodiments.

It is a figure of the embodiment of the typical device in use.

FIG. 6 is a diagram of an embodiment of a typical device after being separated during use.

It is a perspective view of the embodiment of a typical device.

It is a side sectional view of the embodiment of a typical device.

It is a front view of a typical pump-side member in which a first valve is arranged in a pump-side member.

It is a front view of a typical patient-side member in which a second valve is arranged in a patient-side member.

It is a side sectional view of the typical embodiment of the 1st valve arranged in the pump side member.

It is a side sectional view of the typical embodiment of the second valve arranged in the patient side member.

It is a perspective view of a typical embodiment of a pump-side member and a patient-side member when the coupling is released.

It is a perspective sectional view of a typical embodiment of a pump-side member and a patient-side member when the coupling is disengaged.

It is an exploded perspective view of the typical embodiment of an apparatus.

It is a side sectional view of a typical embodiment of a reconnection prevention device.

It is a perspective sectional view of a typical embodiment of a key slot device.

FIG. 3 is a perspective sectional view of a typical embodiment of a key slot device coupled with a reconnection prevention device.

It is a side sectional view of the typical embodiment of a pump side member.

It is a perspective sectional view of a typical embodiment of a snap-fit connector.

FIG. 6 is a side sectional view of an embodiment of a snap-fit connector and a reconnection prevention device when an axial force is applied to the device.

FIG. 6 is a close-up side sectional view of an embodiment of a snap-fit connector and a reconnection prevention device when an axial force is applied to the device.

Although the manufacture and use of various embodiments of the invention are detailed below, it is understood that the invention provides many applicable invention concepts embodied in a wide variety of specific contexts. Should be. The particular embodiments described herein are merely exemplary of the particular method of making and using the invention and do not limit the scope of the invention. One of ordinary skill in the art will be aware of many equivalents for the particular devices and methods described herein. Such equivalents are considered to be within the scope of the invention and belong to the technical scope of the patented invention.

In the drawings, for clarity, not all reference numbers are included in each drawing. In addition, positional terms such as "top", "bottom", "side", "top", and "bottom" refer to the device in the orientation shown in the drawings or when otherwise indicated. One of ordinary skill in the art can recognize that the device can take different orientations during use.

Further with reference to the drawings, FIG. 1 illustrates, by way of example, an application that can be safely cut from a patient and shows a breaker way medical tubing connector device (device) 10 located on a medical tube line. The device 10 can be used within any suitable medical gas, liquid or solid delivery line, discharge line or monitoring line, such as an intravenous (IV) line. The device 10 includes, in some embodiments, a pump-side member 12 and a patient-side member 14. The device 10 is configured to release the coupling, whereby when a tension exceeding the threshold amount is applied in the axial direction facing the device 10, the pump side member 12 and the patient side member 14 Separates. As seen in FIG. 1, a delivery site 100, such as a catheter or other indwelling needle device, is immobilized on the patient 102. A first line 104 extends between the device 10 and a source or sink, which source or sink is for a liquid, gas or solid material moving through the line. The first line 104 has a free end coupled to the device 10. A second line 106 extends between the device 10 and the delivery site 100. The second line 106 is coupled to the free end of the device 10. When the pump-side member 12 and the patient-side member 14 are coupled, one or more valves in the device 10 open and a liquid, gas and / or solid is between the first line 104 and the second line 106. Can be traveled through the device 10. If the patient 102 exercises in such a way that threshold tension is applied to the first and second lines 104, 106, the device 10 separates, which causes the pump side member 12 to separate, as shown in FIG. It can be disengaged from the patient-side member 14. When the pump-side and patient-side members 12, 14 disengage, one or more valves in the device 10 close, which allows the flow of liquid, gas or solid to flow into the pump-side and patient-side members 12, 14 Escape from each can be prevented.

In some embodiments, the device 10 measures the level of tension required to disengage the pump-side and patient-side members 12, 14 before the delivery site 100 is unintentionally removed from the patient 102. It is designed to be low enough to disengage the device 10.

Referring to FIG. 3, in some embodiments, the device 10 includes a pump-side member 12 and a patient-side member 14 located axially opposite to the pump-side member 12. The pump side member 12 includes, in some embodiments, a first fitting 13. The first fitting 13 can include any suitable tube or hose fitting configured to engage the corresponding free end of the medical tube. For example, in some embodiments, the first fitting 13 includes a hose barb fitting, a female lure fitting, a male lure fitting, a male thread fitting, a female thread fitting or any other suitable fitting. Can be done. Similarly, the patient-side member 14 includes a second fitting 15 in some embodiments. The second fitting 15 can be any suitable tube or hose fitting configured to engage the corresponding free end of the medical tube. For example, in some embodiments, the second fitting 15 includes a hose barb fitting, a female lure fitting, a male lure fitting, a male thread fitting, a female thread fitting or any other suitable fitting. Can be done.

Although many forms, embodiments and implementation examples are possible, this particular embodiment as shown in FIG. 3 will be described in detail. On the other hand, as another embodiment, sub-parts may be combined into a single component, or a specific mounting example of the device may be modified. These embodiments will be described in the present application. The device 10 can be inserted into an existing medical line. One end may be specifically adapted to connect directly to the medical line. Other embodiments may provide alternative connections to medical lines such as luer locks and other similar adapters. One end of the device 10 may be pre-installed on some part of the medical line. This is the patient end of a second medical line, typically a medical line with a delivery site 100 into the patient 102, on the patient side of the device 10 via an adapter, luer lock or quick cutting coupling. It is possible to directly connect to the member 14. However, the device 10 can be configured to connect to many existing lines, since these lines are often currently configured with a luer lock at the end of the medical line. Is.

In FIG. 4, the pump-side and patient-side members 12, 14 are coupled together so that a liquid, gas or solid can pass through the device 10 and be delivered to the delivery site 100 of the patient 102. A typical embodiment of the device 10 is shown. For example, a healthcare provider may be administering saline to a patient 102 through a medical line. The first line 104 may be coupled to the first fitting 13 of the pump side member 12. The saline solution then enters through the inlet 16 of the device 10. In one embodiment, the channel 26 arranged on the shaft 24 travels through the pump-side and patient-side members 12, 14 when the pump-side and patient-side members 12, 14 are coupled together. Saline flows through the channel 26 through the pump-side member 12 to the patient-side member 14. The second line 106 may be coupled to the second fitting 15 of the patient side member 14. The saline solution then flows out of the patient side member 14 and the device 10 into the second line 106 via the outlet 18, which line then delivers the saline solution to the patient 102 via the delivery site 100. Deliver.

In some embodiments, the device 10 comprises at least one valve that prevents the flow of liquid, gas or solid when the pump side member 12 is disengaged from the patient side member 14. In one embodiment, the first valve 20 is arranged within the pump side member 12. The first valve 20 may include an active valve. The active valve 20 is configured to allow liquid to pass through the active valve 20 when the pump-side and patient-side members 12, 14 are coupled. Therefore, when the pump-side and patient-side members 12, 14 are coupled, the active valve 20 is activated and the liquid can pass through the pump-side member 12, and the pump-side and patient-side members 12, 14 When disengaged, the active valve 20 is not activated and the liquid cannot pass through the pump side member 12. This prevents liquid loss in the event of cutting, whether accidental or intentional. Those skilled in the art will readily appreciate that various active valves, including QOSINA ™ check valves, can be implemented in this embodiment.

The second valve may be located inside the patient side member. The second valve 22 may include a passive valve. The passive valve 22 may be configured to allow the flow to occur in one direction. The passive valve 22 can also be referred to as a one-way valve. When the liquid is pushed from the pump side member 12 to the patient side member 14 through the device 10, the liquid is free to flow through the passive valve 22. However, if for some reason the liquid is pushed through the device 10 in the opposite direction as previously described, it is not possible for the liquid to pass through the passive valve 22 in the opposite direction. This prevents liquid loss from occurring in the case of cutting, whether accidental or intentional. It also prevents backflow of liquid from the patient 102 to the pump side member 12 and the first line 104. Occasionally, fluid regurgitates from patient 102, but in situations where the venous delivery bag is emptied, a small amount of blood and fluid is released due to the force due to the pressure gradient or due to diffusion. It will move from patient 102. Liquids moving from the patient into the first and second lines 104, 106 contaminate the lines 104, 106, which requires the line to be replaced. With the passive valve 22 or one-way valve located within the patient-side member 14, it is not possible for the liquid to travel in the opposite direction and contaminate the pump-side member 12 and the first line 104. Those skilled in the art will readily appreciate that various one-way or passive valves, including duck bill valves, can be implemented in this embodiment.

FIG. 5 shows a typical embodiment in which the first valve 20 is arranged in the pump side member 12 of the device 10. FIG. 6 shows a typical embodiment in which the second valve 22 is located within the patient-side member 14 of the device 10.

FIG. 7 provides a diagram of a typical first valve 20 disposed within the first valve chamber 21 of the pump side member 12 of the device 10. In this embodiment, the first valve 20 is an active valve. The first valve 20 includes a piston 28, a support base 29 and a diaphragm 30. When the first valve 20 is not activated, the diaphragm 30 forms a seal with the inner wall 31 of the pump side member 12, which prevents liquid from passing through the pump side member 12. The piston 28 is manually biased towards the diaphragm 30, thereby biasing the diaphragm 30 away from the inner wall 31 so that the seal between the diaphragm 30 and the inner wall 31 cannot be maintained. When the diaphragm 30 is biased away from the inner wall 31, the liquid can flow through the diaphragm 30, through the piston 29, and through the pump-side member 12. The diaphragm 30 may rest on the support base 29 in the first valve chamber 21. The support base 29 may be configured to allow liquid to pass from the inlet 16 into the first valve chamber 21. The support base 29 can also bias the diaphragm 30 towards the inner wall 31 of the pump side member 12 when the piston 28 is not exerting force on the diaphragm 30, thereby maintaining a seal between the diaphragm 30 and the inner wall 31. Can be configured as The seal between the diaphragm 30 and the inner wall 31 may also be the result of liquid being pushed from the pump into the pump side member 12 and pressing the diaphragm 30 against the inner wall 31. Sealing can be the result of both forces already described.

Here, with reference to FIG. 8, a typical embodiment of the patient-side member 14 arranged on the shaft 24 is shown. The patient-side member 14 further includes a stem or cannula 32, a second valve chamber 23, an outlet 18, and a channel 26 running through the patient-side member 14. The second valve 22 may be located within the second valve chamber 23. The second valve 22 is a one-way valve or, more specifically, a duck bill valve, which may allow the liquid to travel through the second valve 22 in a single direction. In one embodiment, the cannula 32 extends from the second valve chamber 23 and the outlet is located on or near the second valve chamber 23 on the opposite side of the cannula 32. In this embodiment, the liquid can flow into the cannula 32 and travel through the channel 26 to the second valve chamber 23. The second valve 22 located in the second valve chamber 23 is configured to allow the liquid to flow from the cannula portion of the channel 26 to the liquid outlet portion of the channel 18. The liquid then exits through the patient-side member 14 of the device 10. The liquid moving from the cannula portion of the channel 26 creates an internal pressure on the duckbill valve to open the valve. When the liquid is moving in the opposite direction from the outlet portion of the channel 18, external pressure on the duckbill valve seals the valve.

9 and 10 show embodiments in which various components are coupled together to form a pump-side member 12 and a patient-side member 14. In some embodiments, the pump side member 12 may include a female luer lock adapter 160, a luer activated check valve enclosure 150 and a snap fit connector 140. In some embodiments, the female luer lock 160, the luer-activated check valve enclosure 150 and the snap-fit connector 140 may be integrated into a single unit. The patient-side member 14 includes a reconnection prevention device 120 and a key slot device 130. In some embodiments, the reconnection prevention device 120 and the key slot device 130 may be integrated into a single unit. Each of these elements and the various embodiments will be described in more detail below.

In one embodiment, the cannula 32 of the patient-side member 14 extends from the patient-side member 14. The channel 26b disposed on the shaft 24 may travel through the cannula 32 and the patient-side member. When the cannula 32 is inserted into the pump-side member 12, the channel 26a of the pump-side member 12 has a closed structure with the channel 26b of the patient-side member 14. The pump-side member 12 and the patient-side member 14 consist of the various elements already listed as shown in FIG. 11, where each of the elements is coupled together when channels 26a-26e are formed in the individual elements. When in a closed structure, the individual channels 26a-26e will form a single channel and the liquid can flow through the single channel of the device 10. The various components may remain separate. Alternatively, these components may be combined in various ways to be manufactured as an integrated component. The integrated components do not even integrate the snap-fit connector 140 and the reconnect prevention device 120.

FIG. 12 shows an embodiment of the reconnection prevention device 120. The reconnection prevention device 120 includes a neck 121 and a stem or cannula 32. Channel 26 passes through both the neck 121 and the cannula 32. The channel 26 and the reconnection prevention device 120 may be arranged on the shaft 24. In one embodiment, the neck 121 defines a second valve chamber 23 in which the second valve 22 may be located to control the flow and direction of the liquid through the device 10. Many different valves can be placed in the chamber, however, one embodiment includes a duck bill valve that controls the direction of liquid flow in device 10.

The reconnection prevention device 120 may further include at least one fixed arm 122. The fixation arm 122 is configured such that the device 10 can be detachably coupled to allow the medical line to be opened when a force is applied to the medical line across the device 10. In some embodiments, the fixation arm 122 extends from the reconnection prevention device 120 at the distal end of the neck 121. The fixed arm 122 extends from the neck 121, thereby ensuring that the fixed arm is located radially outward from the cannula 32. In some embodiments, the fixed arm 122 may be substantially perpendicular to the axis 24. At the distal end of the fixed arm 122, the fixed joint 123 has a bend where the fixed arm 122 is no longer parallel to the axis 24 and begins to extend radially outward from the axis 24 at an angle greater than 90 degrees. Define. Therefore, the gripping surface 124 extending from the fixed arm 122 at the fixed joint 123 forms an angle 125 of less than 90 degrees with respect to the radial axis 126 extending vertically from the first axis 24 traveling through the channel 26. See FIGS. 17e and 18d.

Another embodiment of the reconnection prevention device 120 may include a shield 127. The shield 127 may be arranged radially outward from the gripping surface 124, but in other embodiments it may be arranged on the fixed arm 122. The shield 127 prevents the fixed arm 122 from coming into contact with the fixed arm 122, whether intended by the patient or a third party or not by the patient or a third party. In some embodiments, the shield 127 defines a fixed arm guard receiving slot 128. The fixed arm guard receiving slot 128 is configured to receive the fixed arm guard 136 described further below.

FIG. 13 shows an embodiment of the key slot device 130. The key slot device 130 forms a patient-side member 14 substantially corresponding to the reconnection prevention device 120. In one embodiment, the key slot device 130 may include a male luer lock 132 having a chamber wall 134 extending from the distal end of the male luer lock 132, wherein the chamber wall 134 is a second valve chamber. 23 is defined. In some embodiments, the second valve chamber 23 of the reconnection prevention device 120 and the second valve chamber 23 of the key slot device 130 are the same chamber. The walls of each of the anti-reconnection device 120 and the key slot device correspond so that they can form a single second valve chamber 23 as shown in FIG. The second valve 22 is inserted into the second valve chamber 23 to regulate the flow and direction of liquid flow within the device 10.

The key slot device 130 is located on the axis 24, which corresponds to the axis 24 on which the reconnection prevention device 120 is located. As a result, there is a single shaft 24 that is placed on the patient-side member 14 when the key slot device 130 and the reconnection prevention device 120 are coupled. The channel 26 travels through the key slot device.

In some embodiments, the key slot device 130 further comprises a fixed arm guard 136. The fixed arm guard 136 is arranged radially outward from the fixed arm 122 of the reconnection prevention device 120 when coupled to the key slot device 130 as shown in FIG. The fixed arm guard 136 functions as a shield that prevents access to the fixed arm 122. The fixed arm guard 136 may further define the keyhole 138. Occasionally a patient or another individual may attempt to reestablish the connection of device 10 when the medical line becomes disconnected. However, this can be dangerous to the patient as the line can be contaminated during cutting. Therefore, when the connection is being reestablished, the fixed arm guard 136 and the shield 127 interfere with direct access to the fixed arm 122, so that the fixed arm 122 cannot be accessed. The fixed arm 122 can only be accessed through a keyhole 138 that may be located in the fixed arm guard 136 or shield 127. The keyhole 138 may be configured such that the only way to access the fixation arm 122 is to use a special tool designed for the keyhole 138. This limits the ability to establish a connection between the pump-side and patient-side members 12, 14 and ultimately between the venous bag and the patient 102. Therefore, when an accidental disconnection occurs, the healthcare professional can properly assess the situation and determine if it is necessary to provide a new connection because of contamination.

FIG. 14 shows a typical embodiment of the patient-side member 14. The patient-side member 14 can be manufactured as three separate sub-parts (duck bill valve 22, reconnection prevention device 120 and key slot device 130). Sub-parts can be assembled and bonded using common techniques such as bonding materials, connectors and the like. Another embodiment can be realized as an integrated structure for sub-components. This can include 3D printing techniques. However, it should be understood that the concepts disclosed herein do not depend on the patient-side member 14, which is a plurality of assembled subparts or an integrated single member.

In order to further understand the device 10, the pump side member 12 will be described in more detail here. The pump-side member 12 provides a mounting point to which the fixed arm 122 of the patient-side member 14 can be coupled, whereby the pump-side member 12 and the patient-side member 14 are coupled to form the device 10.

FIG. 15 discloses a typical embodiment of the pump side member 12. In some embodiments, the pump side member 12 may include a female luer lock 160, a luer activated check valve device 150 and a snap fit connector 140. Depending on the line used, the pump side member 12 may include different sub-components such as quick connectors, male luer locks, bayonet connectors, compression fittings, barbed connectors, flared connectors, swappable valves and the like. In other embodiments, the pump-side member 12 may be the entire integrated sub-component and the components and components disclosed by the female luer lock 160, the luer-activated check valve device 150 and the snap-fit connector 140. All of the functions can be integrated into a single unit.

FIG. 16 shows a typical embodiment of the snap-fit connector 140. The snap-fit connector 140 may be located on the shaft 24. The shaft 24 is all of the various sub-parts of the pump-side member 12 when coupled and aligned with the shaft 24 of the patient-side member 14 and when the pump-side member 12 and the patient-side member 12 are detachably coupled. Can run through. In addition, the channel 26 may be located within the snap-fit connector 140. When the channel 26 and the patient-side member 14 are detachably coupled, the members 12, 14 form a single channel 26.

The snap-fit connector 140 may also define an annular joint recess 142. The recess 142 is configured to receive the annular joint 144 and prevent liquid leakage when the members 12 and 14 are removably coupled.

A typical embodiment of the snap-fit connector 140 may further include a fixed bar 146. The fixation bar 146 is configured to receive the fixation arm 122 of the reconnection prevention device 120. In one embodiment, the relationship between the fixed arm 122 and the fixed bar 146 provides the device 10 with reconnection prevention and breaker way functionality.

The fixed bar 146 in some typical embodiments may further include an angled receiving surface 148. The angled receiving surface 148 can have an angle of less than 90 degrees with respect to the radial axis 126 extending perpendicularly outward from the first axis 24. See FIGS. 17e and 18d. The angled receiving surface 148 of the fixed bar 146 and the gripping surface 124 of the fixed arm 122 are configured to be complementary to each other. In some embodiments, this results in the angled receptive surface 148 and the gripping surface 124 being coplanar when the pump-side and patient-side members 12, 14 are removably coupled. Can be. Therefore, when the pump-side and patient-side members 12, 14 are removably coupled, the gripping surface 124 and the angled receiving surface 148 are substantially in contact. In other embodiments, the surfaces 124, 128 are substantially parallel, but not perfectly parallel, and therefore it is not possible to maintain a perfectly coplanar contact surface. In some embodiments, when the pump-side and patient-side members 12, 14 are detachably coupled, the fixation arm 122 is slightly radially inwardly biased by the fixation bar 146. This means that the fixed arm 122 is radially outwardly biased, as the material prefers to remain unbiased. In another embodiment, the fixed bar 146 ensures that the fixed arm 122 and the fixed bar 146 are in contact with each other when the members 12, 14 are detachably coupled, but the fixed arm 122 is not radially inwardly biased. Located in.

17a-17f and 18a-18e show the process of removing the pump-side member 12 from the patient-side member 14 and binding to it. In order to remove the pump-side member 12 from the patient-side member 14, the fixation arm 122 must pass or pass through the fixation bar 146.

As already mentioned, sometimes the patient or other circumstances can accidentally apply force to the venous tubing. As a result, the delivery site 100 can be shed from the patient 102, potentially causing extensive damage to the tissue of the patient 102 and severe pain. In some embodiments, the complementary nature of the angled receiving surface 148 of the fixation bar 146 and the gripping surface 124 of the fixation arm 122 may allow the pump side member 12 to be removed from the patient side member 14. When an outwardly opposed axial force 170 is applied across the device 10 (eg, by pulling a venous tubing), the angled receiving surface 148 and gripping surface 124 are neither parallel nor perpendicular to the radiation axis 126. So, in response to an outwardly opposed axial force 170 applied across the device 10, the angled receiving surface 148 exerts a force 172 on the gripping surface 124 perpendicular to the plane of the angled receiving surface 148. To exert. This force 172 is transmitted to the fixed arm 122. The fixed arm 122 is then radially inwardly biased from the force 172 exerted by the angled receiving surface 148 as a result of the outwardly opposed axial force 170 being applied across the device 10. See FIGS. 17b and 18b. When the fixed arm 122 is biased inward in the radial direction, the material of the fixed arm 122 has some elasticity and a radial outward force 174 is applied to return the fixed arm 122 to its resting position. To exert. After the members 12 and 14 have been removed, the fixed arm 122 snaps back to a non-biased position, as shown in FIG. 18e.

The outwardly opposed axial forces 170 required to achieve the removal of the pump-side and patient-side members 12, 14 can be varied by varying some features of the device 10. First, the angles 125 and 149 in which the angled receiving surface 148 and the gripping surface 124 are located, as a result, change the degree of resistance to removal. See FIG. 18d. For example, if the angled receiving surface 148 and gripping surface 124 are set at an angle close to 90 degrees with respect to the radial axis 126, the resulting force 172 will be relative to the bias direction of the fixed arm 122 for removal. It becomes more complementary, and as a result, a radial inward force is applied to the fixed arm 122 and no axial force with respect to the fixed arm 122 occurs as a result. The radial inward force biases the fixed arm 122 in the radial inward direction. Axial forces result in tension applied to the fixed arm 122 but not biasing the fixed arm 122. Instead, tension provides resistance to outwardly opposed axial forces 170. Therefore, as the angled receiving surface 148 and the gripping surface 124 approach parallel to the radial axis 126, the force between the two components 124 and 148 becomes more axial and not radial. Therefore, a larger outwardly opposed axial force 170 is required for the fixed arm 122 to be radially inwardly biased as a result. See FIG. 17e.

Second, the outwardly opposed axial force 170 required to achieve removal can vary with the length of the gripping surface 124. If the gripping surface 124 is longer, the fixation arm 122 must be radially inwardly biased by a greater distance past the angled receiving surface 148 and the fixation bar 146. If a larger amount of force is required to bias the fixed arm 122 inward in the radial direction, and therefore a larger or lesser amount of outwardly opposed axial force 170 is desired for removal. The length of the gripping surface 124 can be increased or decreased, respectively. This may result in certain material stresses on the fixation arm 122, thus the fixation arm 122 may also include a reinforced joint 122a in which the fixation arm 122 extends from the reconnection prevention device 120.

Third, the texture of the angled receptive surface 148 and the gripping surface 124 can be modified to provide greater resistance. The gripping surface 124 slides relative to the angled receiving surface 148 as an outwardly opposed axial force 170 is applied to the device 10. The sliding movement produces opposing frictional forces. The greater the coefficient of friction on the two surfaces 124 and 148, the greater outwardly opposed axial forces 170 are required to remove the device 10. The surface areas of the two surfaces 124, 128 can be adjusted to provide different levels of resistance. This includes larger or smaller surfaces 124, 148 or incomplete contact between two surfaces 124, 148.

Fourth, the material and thickness of the fixed arm 122 may also change the amount of outwardly opposed axial force 170 required to remove the device 10. When the fixed arm 122 is made of a thicker and more rigid material, a greater force is required to bias the fixed arm 122 in the radial direction. Therefore, the force required to disconnect the two members 12, 14 can be modified to maximize the effectiveness of the device 10. For a particular patient or insertion point, the tissue or patient can be particularly sensitive to injury or special susceptibility, so low threshold tension or outwardly opposed axial to induce removal. It may be necessary to have a force 170. Other situations may require higher thresholds for uncoupling. The annular joint 144 may also provide extra resistance to disengagement of the two members 12, 14.

The relationship between the fixed arm 122 and the fixed bar 146 associated with the fixed arm guard 136 provides the reconnection prevention feature of the present disclosure. The fixed arm 122 further defines the deflection surface 129. When the pump-side and patient-side members 12 and 14 are not coupled and the corresponding axes are aligned, the fixed arm 122 and the fixed bar 146 are aligned so that the two members 12 and 14 sandwich the shaft 24. It translates toward each other so that the deflection surface 129 of the fixation arm 122 comes into contact with the fixation bar 146. The deflection surface 129 interferes with further body movements, making it impossible for the two members 12, 14 to join. In some embodiments, the deflection surface 129 is angled substantially parallel to the gripping surface 124. The fixed bar 146 is also angled or rounded so that when the user applies an inwardly opposed axial force 171 to the two members 12, 14 and the fixed bar 146 is in contact with the deflection surface 129. The fixed arm 122 is radially biased outward, thereby preventing the two members 12, 14 from being coupled.

Since the deflection surface 129 and the fixing bar 146 are aligned to prevent coupling when the fixing arm 122 is not biased, the user manually adjusts the fixing arm 122 in order to achieve the coupling of the two members 12, 14 Radially inwardly biased at, thereby causing the fixed arm 122 to slide past the fixed bar 146 as the two members 12, 14 translate toward the other along the axis 24. In some embodiments, the fixed arm guard 136 prevents access to the fixed arm 122. Access is only possible through keyhole 138. A special key is required to bias the fixed arm 122 inward in the radial direction. This allows the healthcare provider to limit the ability of the two members 12, 14 to join to those who have access to the key. When unintentional disconnection occurs, the healthcare provider assesses the situation to determine if the line can be reconnected or if a new line needs to be used because of contamination or damage to the line. obtain.

Those skilled in the art will readily appreciate that the components already mentioned can be placed on either member 12, 14 and can be repositioned or replaced on each of member 12, 14. Therefore, the fixed arm 122, the fixed arm guard 146 and any other components identified in the present disclosure located on the patient side member 14 are repositioned on the pump side member 12 and fixed on the pump side member 12. It is within the scope of the present disclosure that the bar 146 and other ancillary elements are repositioned to the patient-side member 14. Further, the valves 20, 22 and the activation structure (cannula 32 and activation surface 32) are opposed members 12 when the liquid is being extracted from the patient 102 rather than being administered to the patient 102 as previously described. , 14 can be resident.

In some embodiments, the two members 12, 14 may also include a terminal cap. The terminal cap is configured to prevent contamination of the inner channel with the components of the members 12, 14. In some embodiments, the terminal cap may include existing components such as a shield 127, a fixed bar 146 and a fixed arm guard 136. In other embodiments, the second end of the patient-side member is capable of acting as a first terminal cap and the proximal end of the pump-side member 12 is to function as a second terminal cap. It is possible to operate. In other embodiments, the diameters of the channel 26 and the cannula 32 provide protection from interfering with the valves 20, 22 of the device 10. The patient may attempt to reconnect device 10 if accidentally disconnected, but the diameters of channel 26 and cannula 32 prevent contact with valves 20, 22. This contact can damage valves 20 and 22 and result in loss of liquid due to the damaged valve.

Since the device 10 is used in the field of liquid transfer applications, in the event of a cut, the flow of liquid through the device is stopped to prevent liquid loss from the patient and also to prevent liquid leakage from, for example, a venous bag. It is important to prevent it. Some embodiments may implement a series of valves that prevent the loss of liquid and the resulting cleanup and the hazards of non-contained liquids. As already mentioned, the duck bill valve 22 may be mounted in the device 10 to prevent the liquid from flowing back in the direction opposite to the desired flow. The duck bill valve 22 is located in the downstream portion of the two members 12, 14. Other one-way valves can also be implemented in various other embodiments, along with multi-directional valves. Thus, if the liquid has been removed from the patient, the duckbill valve 22 will be in the pump side member 12 downstream of the patient 102, while if the liquid has been administered to the patient 102, the duckbill valve 22 will be. Will be in close proximity to patient 102.

As already mentioned, the first valve 20 is needed to prevent the liquid from continuing to flow from the source when the two members 12, 14 are removed. In some embodiments, this is achieved by providing a first valve 20 that is activated only when the two members 12, 14 are coupled together. This can be achieved by providing a cannula 32 that extends into the pump side member 12 and activates the check valve or the first valve 20. The pressure provided by the valve activation surface 34 of the cannula 32 activates the first valve 20 when the two members 12, 14 are coupled. When the two members 12, 14 are separated, the valve starting surface 34 no longer applies pressure to the first valve 20, thereby preventing liquid from flowing through the first valve 20. Some embodiments may utilize commercially available check valves such as the QOSINA ™ luer-activated check valve.

In some embodiments, the annular joint 144 may be placed within the device 10 to minimize liquid loss during disengagement. As the two members 12, 14 are separated from each other, the valve starting surface 34 of the cannula 32 loses contact with the first valve 20. The annular joint 144 is located within the channel 26 so that the seal around the cannula 32 remains sealed even after the first valve 20 has been deactivated. Thus, the system remains sealed for a period of time even after the first valve 20 is no longer in the activated state and liquid cannot pass into or through the device 10. See FIGS. 17e and 17f.

Thus, although specific embodiments of the present invention of novel and useful breakaway medical tubing connectors have been described, such references are to be construed as limiting to the scope of the invention. Not intended.

Claims (5)

A pump-side member housing having a first end and a second end,
The first channel arranged in the pump side member housing and
An inflow port arranged at the first end portion of the pump-side member housing and communicating with the first channel,
A first valve located in the first channel downstream of the inlet,
With the pump side member including the fixing bar coupled to the second end of the pump side member housing;
A patient-side member housing with proximal and distal ends,
The second channel arranged in the patient-side member housing and
An outlet located at the distal end of the patient-side member housing and communicating with the second channel,
A second valve located upstream of the outlet and in the second channel,
With patient-side members, including a fixed arm coupled to the distal end of the pump-side member housing;
It is a device equipped with
The pump-side member is configured to be separably coupled to the patient-side member via the fixing bar and the fixing arm.
The fixed arm is a device configured to bias inward in the radial direction when the pump-side member is disengaged from the patient-side member.
The fixed bar further comprises a first surface of the fixed bar that is substantially parallel to the first axis and a second surface of the fixed bar that forms a first angle of less than 90 degrees with respect to the radial axis. A device that defines and the radial axis is perpendicular to the first axis and defines a fixed angle between the first surface of the fixed bar and the second surface of the fixed bar. The fixed arm further defines a first surface of the fixed arm and a second surface of the fixed arm.
The first surface of the fixed arm is located at a position of the fixed arm with respect to the second surface at a second angle that is substantially complementary to the fixed angle.
The second surface of the fixing arm is substantially in contact with the second surface of the fixing bar when the patient-side member and the pump-side member are separably coupled. The device described in. The first angle and the fixing angle of the second surface of the fixing bar are such that the patient-side member and the pump-side member are separably coupled, and an outwardly opposed axial force is applied to the patient-side. The device according to claim 2 , wherein the fixed arm is configured to bias inward in the radial direction when applied to the member and the pump side member. The fixed arm is located on the pump-side member, whereby the patient-side member and the pump-side member are disengaged, and an inwardly opposed axial force is applied to the patient-side member and the pump-side member. When applied to, the distal end of the fixation arm contacts the distal portion of the fixation bar, preventing the patient-side member and the pump-side member from being separably coupled. The device according to claim 1 . The device of claim 1 , wherein the fixation arm is configured to slide past the fixation bar when the fixation arm is manually biased inward in the radial direction.

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