Leak-tight fluid connection system

Abstract

Needleless fluid delivery devices can be coupled to a valve to deliver fluid to a patient. When the device is withdrawn from the valve, fluid leaks out of the valve. This problem can be solved with a leak-proof valve. The leak-proof valve may include a housing having a receiving lumen and a delivery lumen transverse to the receiving lumen. A guide bushing is positioned in the receiving lumen, and a silicone tube is supported outwardly against the delivery lumen. When the device is inserted into the receiving lumen, it displaces the guide bushing and compresses the silicone tube. This compression fluidly connects a through-hole in the guide bushing to the delivery lumen, facilitating fluid delivery. When the device is removed, the silicone tube seals the delivery lumen and limits fluid leakage from the valve.

Description

[0001] Cross-reference to related applications

[0002] This application claims priority to U.S. Application No. 19 / 002,497, filed on December 26, 2024, entitled “LEAK-PROOF FLUID CONNECTIONSYSTEM”. Technical Field

[0003] This disclosure generally relates to medical fluid valves, and more specifically, to valves modified to control medical fluids and connected to needleless fluid connector systems. Background Technology

[0004] Fluid connection systems may include stopcock valves with various ports configured to connect to needleless fluid connectors, such as neutral shift needleless connectors. The ports may be directly connected to the fluid delivery device or indirectly connected via extension tubing. For example, one port of the stopcock valve may be directly connected to a syringe, while another port may be connected to an extension tube that fluidly connects to other ports and other fluid delivery devices. Summary of the Invention

[0005] Fluid connection systems can be used to connect multiple fluid delivery devices and ports, such as stopcocks, intravenous (IV) cannulas, IV delivery kits, extension tubes, valves, syringes, etc. Specifically, a syringe (or other fluid delivery device) can be inserted into a valve housing to deliver fluid to the fluid connection system. When the syringe is withdrawn from the valve housing (intentionally or unintentionally), fluid (e.g., medication) can leak out because the withdrawal exposes the fluid to the surrounding environment. Therefore, a valve housing that prevents fluid leakage when the syringe is removed is needed.

[0006] Some embodiments of this disclosure relate to a leak-proof injection port for a fluid connection device, the injection port comprising: a housing including a receiving cavity and a delivery cavity, wherein the delivery cavity is transverse to the receiving cavity and intersects the most distal end of the receiving cavity; a guide bushing disposed within the receiving cavity and configured to receive a fluid delivery device, wherein the guide bushing includes an inner cavity and an orifice fluidly connected to the inner cavity; and an elastic member disposed within the delivery cavity and configured to restrict fluid flow through the delivery cavity in a default position and fluidly connect the fluid delivery device and the delivery cavity in a flow position, wherein the elastic member is configured to be compressed into the flow position when the guide bushing receives the fluid delivery device.

[0007] In some embodiments, the injection port is configured to fluidly connect a fluid delivery device to one or more extension tubes, IV cannulas, or plug valves.

[0008] In some embodiments, the housing includes a slot, and the guide bushing includes a key movably coupled to the slot. Optionally, the slot is positioned at a distal portion of the receiving lumen and adjacent to the delivery lumen. Optionally, the slot and the key are configured to facilitate continuous contact between the guide bushing and the resilient member. Optionally, the key is configured to advance distally along the slot when the guide bushing receives the fluid delivery device, and is configured to slide proximally along the slot when the fluid delivery device is withdrawn from the guide bushing.

[0009] In some embodiments, the guide bushing comprises a material that is more rigid than the elastic member.

[0010] In some embodiments, the guide bushing receives the fluid delivery device at its proximal end and contacts the resilient member at its distal end.

[0011] In some embodiments, the guide bushing is configured to be advanced distally by the fluid delivery device to compress the resilient member from a default position to a flow position.

[0012] In some embodiments, the guide bushing has a first height, the bore has a second height, and the ratio of the first height to the second height is approximately 3.

[0013] In some embodiments, the hole is located at the distal portion of the guide bushing.

[0014] In some embodiments, when the guide bushing receives the fluid delivery device and compresses the elastic member into the flow position, the orifice is configured to fluidly connect the inner lumen and the delivery lumen.

[0015] In some embodiments, the elastic member comprises a hollow column.

[0016] In some embodiments, the hollow cylinder includes an inner diameter and an outer diameter, and the ratio of the outer diameter to the inner diameter is approximately 1.5.

[0017] In some embodiments, the elastic member is configured to radially outward support against the delivery lumen.

[0018] In some embodiments, the elastic member comprises an elastic material and is configured to elastically transition from a flow position to a default position when the fluid delivery device is withdrawn from the guide bushing.

[0019] Other embodiments of this disclosure relate to a guide bushing for a leak-proof injection port. The guide bushing is configured to be movably coupled to a housing and includes an inner lumen, a bore fluidly connected to the inner lumen, and a key projecting from an outer surface of the guide bushing. The guide bushing is configured to receive a fluid delivery device that is advanced distally to displace a resilient member coupled to the housing and to facilitate fluid flow through the housing.

[0020] In some embodiments, the key is configured to movably engage with a slot in the housing of the leak-proof injection port.

[0021] In some embodiments, the hole is located on the distal portion of the guide bushing.

[0022] This disclosure also discloses a method for manufacturing a leak-proof injection port. The method includes first providing a housing including a receiving lumen, a slot on a surface of a distal portion of the receiving lumen, and a delivery lumen transverse to and intersecting the distal end of the receiving lumen; next, the method includes providing an elastic member, wherein the elastic member is hollow and cylindrical, and positioning the elastic member within the delivery lumen, wherein the elastic member is outwardly supported against the delivery lumen in a default position. Next, the method includes providing a guide bushing including an inner lumen, an orifice fluidly connected to the inner lumen, and a key projecting from the outer surface of the distal portion of the guide bushing. After providing the guide bushing, the method includes positioning the guide bushing within the receiving lumen such that the key is movably coupled to the slot, and the distal end of the guide bushing abuts the elastic member. The guide bushing is configured to be advanced distally by a fluid delivery device, thereby compressing the elastic member into a flow position and fluidly connecting the inner lumen to the delivery lumen via the orifice.

[0023] Further features and advantages of this subject matter will be set forth in the description which follows, and some features and advantages will become apparent from the description or may be learned by practice of the subject matter. The advantages of this subject matter will be realized and obtained through the written description and embodiments, as well as the structures specifically pointed out in the accompanying drawings.

[0024] It should be understood that the general description above and the detailed description below are exemplary and illustrative, and are intended to provide further explanation of the technical subject matter. Attached Figure Description

[0025] Various features of illustrative embodiments of the invention are described below with reference to the accompanying drawings. The illustrated embodiments are intended to illustrate, not limit, the invention. The drawings include the following figures:

[0026] Figure 1 A fluid connection device for connecting a fluid delivery device and an IV cannula, according to some embodiments disclosed herein, is shown.

[0027] Figure 2 Leak-proof injection ports for fluid connection devices according to some embodiments disclosed herein are shown.

[0028] Figure 3 A cross-sectional view of an injection port for a fluid connection device according to some embodiments disclosed herein is shown.

[0029] Figure 4A A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the fluid delivery device is coupled to the guide bushing and the resilient member is in the default position.

[0030] Figure 4B A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the fluid delivery device displaces the guide bushing such that the guide bushing compresses the elastic member into the flow position.

[0031] Figure 5A A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the elastic member is in the default position.

[0032] Figure 5B A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the elastic member is in the flow position.

[0033] Figure 6 A cross-sectional view of the housing of the injection port according to some embodiments disclosed herein is shown.

[0034] Figure 7 A perspective view of a guide bushing for an injection port according to some embodiments disclosed herein is shown.

[0035] Figure 8 A perspective view of the elastic member of the injection port according to some embodiments disclosed herein is shown. Detailed Implementation

[0036] In the following detailed description, numerous specific details are set forth to provide a full understanding of the subject matter. The subject matter can be practiced without these specific details. In other instances, well-known structures and techniques are not shown in detail to avoid obscuring the subject matter.

[0037] Furthermore, although this specification sets forth specific details of various embodiments, it should be understood that this specification is illustrative only and should not be construed as restrictive in any way. Moreover, it is conceivable that although specific embodiments of this disclosure may be disclosed or illustrated in the context of IV kits, these embodiments can be used in other fluid delivery systems. Furthermore, various applications and modifications of such embodiments that may occur to those skilled in the art are also included within the general concepts described herein.

[0038] Needleless connectors are fundamental devices for delivering fluids to patients via intravenous (IV) catheters. They can be used by the general patient population, including newborns, children, and adults. Integrating needleless connectors with typical control valves or injection ports has disadvantages. For example, when the needleless connector is withdrawn from the injection port, the ordinary injection port exposes the fluid to the environment. This can lead to fluid leakage from the injection port, resulting in unnecessary time spent on cleanup, wasted medication, or premature IV catheter replacement. The following devices and methods offer design modifications to overcome these problems.

[0039] Now refer to the attached diagram, Figure 1 A fluid connection device for connecting a fluid delivery device and an IV cannula, according to some embodiments disclosed herein, is shown. The fluid connection device 1 includes an IV port 2, a stopcock valve 6, and an injection port 10. (As...) Figure 1 As shown, IV port 2 can be connected to IV cannula 4 or to an extension tube. The stopcock valve 6 includes at least one port that can be connected to a fluid delivery device or a needleless fluid connector. Finally, injection port 10 can be connected to a fluid delivery device or a needleless fluid connector, such as syringe 8. Injection port 10 will be discussed in more detail below.

[0040] Figure 2 A leak-proof injection port for a fluid connection device according to some embodiments disclosed herein is shown. The injection port 10 can be described as having two parts: a receiving part 12 and a delivery part 16. The receiving part 12 is configured to connect with a fluid delivery device (e.g., Figure 1 The syringe 8 shown is connected, and the delivery portion 16 is configured to connect to a fluid delivery port (e.g., Figure 1 The IV port 2 and / or the stop valve 6 shown are connected via tubing. The receiving section 12 has a cover 14 that can be removed to expose the receiving lumen (not shown) inside the receiving section 12. The delivery section 16 has a delivery lumen 108 that can be fluidly connected to the IV port 2 and the stop valve 6 (as shown). Figure 1 (As shown).

[0041] Figure 3 A cross-sectional view of an injection port for a fluid connection device according to some embodiments disclosed herein is shown. The cross-section is along... Figure 2The line AA in the figure is cut off. The injection port 10 consists of a housing 100, a guide bushing 200, and an elastic member 300. As shown, the housing 100 includes a receiving cavity 102 and a delivery cavity 108. The receiving cavity 102 is transverse to the delivery cavity 108. Optionally, the receiving cavity 102 is perpendicular to the delivery cavity 108. The receiving cavity 102 intersects the delivery cavity 108 at its farthest end. This intersection is at... Figure 6 This will be shown in more detail below.

[0042] As mentioned above Figure 1 The injection port 10 is configured to receive a fluid delivery device, such as a syringe 8. Specifically, the fluid delivery device is received at the guide bushing 200 within a receiving cavity 102 of the housing 100. (This is discussed below.) Figure 4A and Figure 4B (As shown in the image).

[0043] The guide bushing 200 is positioned within the receiving cavity 102 of the housing 100. The guide bushing 200 has a generally cylindrical shape, but other shapes are also possible. The shape and height of the guide bushing 200 can be adjusted to fit housings 100 of different shapes and sizes. In some embodiments, the guide bushing 200 is shorter than the receiving portion 12 of the housing 100, allowing the fluid delivery device (e.g., Figure 1 The syringe 8) can be connected to the guide bushing 200 inside the receiving lumen 102. Optionally, the guide bushing 200 is connected to a fluid delivery device outside the housing 100.

[0044] The guide bushing 200 has an inner lumen 202. This inner lumen 202 can extend along the entire length of the guide bushing 200 (e.g., ...). Figure 3 (as shown), or simply extends along a portion of the length of the guide bushing 200. In some embodiments, the inner lumen 202 is parallel to the receiving lumen 102. The inner lumen 202 is configured to receive fluid from a fluid delivery device (e.g., Figure 1 The fluid in the syringe 8) is fluidly connected to the hole 204.

[0045] Hole 204 is a through hole in the outer surface of the guide bushing 200, extending into the inner cavity 202 of the guide bushing 200, such that fluid received from the fluid delivery device at the proximal end of the guide bushing 200 is also received at hole 204. Figure 3 As shown, the hole 204 is located at the distal portion of the guide bushing 200. In some embodiments, the hole 204 may be located at the distal end of the guide bushing 200 such that the hole 204 is a notch or recess located at the distal end of the guide bushing 200.

[0046] The guide bushing 200 abuts the elastic member 300. The distal end of the guide bushing 200 contacts the outer surface of the elastic member 300. The elastic member 300 is radially outwardly supported against the delivery cavity 108 of the housing 100. In this position (which may be referred to as the default position), the elastic member 300 restricts fluid flow between the receiving cavity 102 and the delivery cavity 108. Because the elastic member 300 is made of an elastic material, it can also be displaced by the guide bushing 200 to a flow position. These two positions are... Figure 4A and Figure 4B It is shown in the figure and described in more detail below.

[0047] Figure 4A A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the fluid delivery device is coupled to the guide bushing and the resilient member in the default position. As shown, the fluid delivery device 8 is inserted into the receiving lumen 102 of the housing 100. The fluid delivery device 8 is coupled to the proximal end 208 of the guide bushing 200 and delivers fluid to the inner lumen 202 of the guide bushing 200. Figure 4A In this configuration, the distal end 210 of the guide bushing 200 rests on the elastic member 300. The elastic member 300 remains radially pressed against the delivery cavity 108 and remains in its default position, meaning that the delivery cavity 108 is not fluidly connected to the fluid delivery device 8. This also means that fluid from the fluid delivery device 8 reaches the orifice 204 of the guide bushing 200 and stops there. This is due to... Figure 4A The first fluid flow path f1 is shown in the diagram.

[0048] Figure 4B A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the fluid delivery device displaces the guide bushing such that the guide bushing compresses the resilient member into a flow position. A force F is applied to the fluid delivery device 8, which causes the guide bushing 200 to be distally advanced into the resilient member 300. As the guide bushing 200 is distally advanced, the resilient member 300 is compressed and transitions into the flow position. In this flow position, the orifice 204 of the guide bushing 200 is fluidly connected to the delivery lumen 108. (This is also in...) Figure 5B (As shown in the diagram, which will be discussed below). As a result, fluid from the fluid delivery device 8 passes through the inner cavity 202 of the guide bushing 200, outflows through the orifice 204, and enters the delivery cavity 108. This is shown by the second fluid flow path f2.

[0049] like Figure 3 , Figure 4A and Figure 4BAs shown, the guide bushing 200 contacts and compresses the elastic member 300 at a position closer to the first end 302 than the second end 304. Positioning the guide bushing 200 near the first end 302 of the elastic member 300 facilitates fluid flow forward (towards) along the second fluid flow path f2. Figure 1 The stopcock valve 6 in the middle is not turned backward (towards) Figure 1 The flow occurs at port 2 of IV in the fluid because the second end 304 of the elastic member 300 is still radially outwardly supported against the delivery lumen 108, even when the elastic member 300 is in the flow position. Alternatively, the guide bushing 200 may contact and compress the elastic member 300 at a position closer to the second end 304 than the first end 302, which will facilitate backward fluid flow.

[0050] The elastic member 300 is made of an elastic material (e.g., silicon) biased toward the default position. Therefore, when the fluid delivery device 8 is withdrawn proximally, the elastic member 300 immediately begins to expand and return to its original position. Figure 4A The default position is shown. Due to the elastic and expandable nature of the elastic member 300, the delivery cavity 108 is isolated from the environment when the fluid delivery device 8 is withdrawn from the housing 100. This means that the fluid now in the delivery cavity 108 will not leak upwards back into the inner cavity 202 of the guide bushing 200 and flow out from the injection port.

[0051] Figure 3 , Figure 4A and Figure 4B It is shown that the orifice 204 of the guide bushing 200 is not aligned with the first end 302 of the elastic member 300. This positioning of the guide bushing 200 relative to the elastic member 300 prevents fluid from re-entering the inner cavity 202 of the guide bushing 200 and leaking from the injection port when the fluid delivery device 8 is withdrawn from the injection port. Because the orifice 204 is not aligned with the first end 302 of the elastic member 300, the first end 302 returns to radially outwardly support against the delivery cavity 108 (and seals the delivery cavity 108 away from the orifice 204 and the inner cavity 202) before the fluid delivery device 8 and the guide bushing 200 are fully withdrawn.

[0052] Figure 5A A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the elastic member is in the default position. The cross-section is along... Figure 2 The image was taken from the BB line. See above for reference. Figure 4A The guide bushing 200 rests on top of the elastic member 300 such that the hole 204 of the guide bushing 200 is not fluidly connected to the delivery cavity 108.

[0053] This view of the housing 100 and guide bushing 200 also shows key and slot features that movably engage the guide bushing 200 to the housing 100. Specifically, the guide bushing 200 has a key 206 movably engaged with a slot 110 in the receiving lumen 102 of the housing 100. When the guide bushing 200 is advanced distally toward the resilient member 300 by the fluid delivery device, the key 206 slides distally along the slot 110. When the resilient member 300 springs back to its default position, and the guide bushing 200 is advanced proximally back into the inner lumen, the key 206 also slides proximally along the slot 100. The slot and key configuration prevents the guide bushing 200 from rotating within the receiving lumen 102 of the housing 100, which helps ensure that the orifice 204 remains correctly oriented relative to the delivery lumen 108. Optionally, the housing 100 has a key corresponding to the slot on the guide bushing 200.

[0054] In some embodiments, the housing 100 may also have a key 112 at the proximal end of the slot 110, which prevents the guide bushing 200 from sliding out of the housing 100. Optionally, the key 112 may be positioned such that the guide bushing 200 maintains constant contact with the resilient member 300.

[0055] Figure 5B A cross-sectional view of the injection port according to some embodiments disclosed herein is shown, wherein the elastic member is in the flow position. The guide bushing 200 is guided by a fluid delivery device (e.g., Figure 1 The syringe 8) is advanced distally until the guide bushing 200 compresses the elastic member 300. As shown, when the elastic member 300 is compressed into the flow position, the orifice 204 of the guide bushing 200 is exposed to the delivery lumen 108 of the housing 100, thus fluidly connecting the fluid delivery device, the inner lumen of the guide bushing 200, the orifice 204, and the delivery lumen 108. It is worth noting that in Figure 5B In this case, the hole 204 is not exposed to the entire delivery cavity 108. As shown in the figure, the hole 204 is only exposed to the first part 108A of the delivery cavity, while the second part 108B of the delivery cavity is still sealed by the elastic member 300.

[0056] As the guide bushing 200 is advanced distally by the fluid delivery device, the key 206 of the guide bushing 200 slides distally along a slot 110 positioned in the inner cavity 102 of the housing 100. When the fluid delivery device is withdrawn, the key 206 slides proximally back into the slot 110. In some embodiments, the key 206 of the guide bushing 200 slides proximally upward along the slot 110 until it reaches a key 112 protruding from the inner cavity 102 of the housing 100. In other embodiments, the key 206 of the guide bushing 200 stops sliding along the slot 110 before reaching the key 112 of the housing 100.

[0057] Figure 6 A cross-sectional view of the housing of the injection port according to some embodiments disclosed herein is shown. The cross-section is along... Figure 2 The line AA is cut from the middle. The shell 100 may be made of polycarbonate or other rigid, biocompatible materials.

[0058] The housing 100 has a receiving cavity 102, which is configured to receive a guide bushing (e.g., Figures 3-5B The guide bushing 200 shown) and the fluid conveying device (e.g., Figure 1 The syringe 8 shown Figure 4A and Figure 4B The fluid delivery device 8 shown. The housing 100 also has a delivery cavity 108 configured to receive an elastic member (e.g., Figures 3-5B (The elastic member 300 is shown). The receiving cavity 102 is transverse to the delivery cavity 108. The receiving cavity 102 intersects the delivery cavity 108 at its farthest end 104.

[0059] As mentioned above Figure 5A and Figure 5B The housing 100 also includes a slot 110. Figure 6 The slot 110 shown extends from the distal portion of the receiving cavity 102, beyond the distal end 104 of the receiving cavity, and enters the delivery cavity 108. In other embodiments, the slot 110 does not extend into the delivery cavity 108. In some embodiments, the housing 100 includes only one slot 110. In other embodiments, the housing 100 includes two slots 110. Optionally, the housing 100 includes three or more slots 110. In some embodiments, the slots 110 are symmetrically positioned around the receiving cavity 102. In other embodiments, the slots 110 are asymmetrically positioned around the receiving cavity 102.

[0060] exist Figure 6 In this embodiment, the delivery cavity 108 of the housing 100 has different sections comprising different diameters. The delivery cavity 108 may be gradually tapered and have a continuously varying diameter. The delivery cavity 108 may also have multiple sections, each having its own diameter different from other sections but consistent within any given section. In the illustrated embodiment, the section of the delivery cavity 108 intersecting with the receiving cavity 102 has a section particularly suitable for an elastic member (i.e., Figures 3-5B and Figure 8 The diameter of the elastic member 300 shown. This ensures that the elastic member will not slide along the delivery lumen 108.

[0061] Figure 7A perspective view of a guide bushing for an injection port according to some embodiments disclosed herein is shown. The guide bushing 200 may be made of polypropylene, an acrylic copolymer, or any other rigid material. The guide bushing 200 has an inner lumen 202, a hole 204 located at or near the distal end of the guide bushing 200, and a key 206 protruding from the outer surface of the guide bushing 200 at or near the distal end of the guide bushing 200.

[0062] exist Figures 3-5B and Figure 7 In the illustrated embodiment, the inner lumen 202 extends through the entire length of the guide bushing 200 and is fluidly connected to the orifice 204. That is, the entire guide bushing 200 is hollow from the proximal end to the distal end, which reduces the amount of material required to manufacture the guide bushing 200 and allows for a lighter injection port. In other embodiments, the inner lumen 202 extends only along a portion of the length of the guide bushing 200. For example, the inner lumen 202 may extend from the proximal end of the guide bushing 200 and only reach the orifice 204, such that the inner lumen 202 and the orifice 204 remain fluidly connected. In this embodiment, the distal end of the guide bushing 200 will be closed, which helps control the flow path of the fluid delivered by the fluid delivery device.

[0063] exist Figures 3-5B and Figure 7 In the illustrated embodiment, the hole 204 is positioned near the distal end of the guide bushing 200 and has a generally semi-circular shape. Other positions and shapes are also possible. For example, the hole 204 may be positioned adjacent to the distal end of the guide bushing 200 such that the hole 204 is cut out from the base of the guide bushing 200 and is close to the elastic member (e.g., when assembling the injection port). Figures 3-5B (As shown). Hole 204 can also be a complete circle, square, rectangle, etc.

[0064] Hole 204 can also have different sizes. For example... Figure 7 As shown, the guide bushing 200 has a height H1, and the hole 204 has a height H2. Figures 3-5B and Figure 7 In the illustrated embodiment, H2 is approximately one-third the height of H1. In some embodiments, H2 is approximately one-quarter to one-half the height of H1. Other dimensional ratios are also possible.

[0065] The guide bushing also includes keys 206. The size and number of keys 206 on the guide bushing 200 can correspond to the size and number of slots in the housing (i.e., slots 110 in the receiving cavity 102 of the housing 100, such as...). Figure 6(As shown). Key 206 can be fitted inside a slot within the receiving cavity of the housing and slide along the slot. Key 206 is configured to prevent the guide bushing 200 from rotating within the housing at the injection port, which helps to ensure that the orifice 204 is relative to the delivery cavity (i.e., the delivery cavity 108 of the housing 100, as shown). Figure 6 (As shown) Correct orientation.

[0066] Key 206 protrudes from the outer surface of guide bushing 200 at different locations. In some embodiments, key 206 may extend from the distal end of guide bushing 200 towards the proximal end. Figure 7 In the illustrated embodiment, the key is positioned on the distal portion of the guide bushing 200, not reaching the distal end of the guide bushing 200. Besides having different positions, the key 206 can also have different dimensions. Figure 7 In this embodiment, key 206 is shorter than hole 204. In other embodiments, key 206 may be taller than hole 204. Key 206 may also have different widths and depths, which may correspond to slots in the receiving cavity of the housing.

[0067] Guide bushing 200 has a proximal diameter D p and distal diameter D d .like Figure 7 As shown, D d Less than D p This is because the distal portion of the guide bushing 200 is stepped relative to the rest of the guide bushing 200. This reduces friction between the outer surface of the guide bushing 200 and the receiving cavity of the housing as the guide bushing 200 slides within the receiving cavity. By reducing the amount of guide bushing material in the gap formed in the delivery cavity when the elastic member is compressed into the flow position, a smaller distal diameter D is achieved when the elastic member is in the flow position. d It also improves the fluid flow between the inner cavity 202 of the guide bushing 200 and the delivery cavity of the housing.

[0068] Figure 8 A perspective view of an elastic member of an injection port according to some embodiments disclosed herein is shown. The elastic member 300 is made of an elastic material such as silicon. The elastic member 300 has a generally cylindrical shape and a hollow interior (i.e., the elastic member 300 may be tubular). The elastic member 300 has an outer diameter D. o and inner diameter D i D o With D i The ratio is approximately 1.5. In some embodiments, D o With D i The ratio is approximately 1.0 to 2.0. In other embodiments, D o With D i The ratio is greater than 2.0.

[0069] The thickness of the hollow tube constituting the elastic member 300 varies with D o With D i The thickness of the hollow tube is directly related to the elasticity of the elastic member 300. That is, a thicker hollow tube means that the elastic member 300 is more elastic and more biased toward the default position than an elastic member 300 with a thinner hollow tube.

[0070] This disclosure also includes a method of using an injection port. Before the fluid delivery device is connected to the injection port, a guide bushing rests on top of an elastic member, and the elastic member is in a default position, wherein the inner cavity and orifice of the guide bushing are sealed and isolated from the delivery cavity of the housing by the elastic member. (See reference...) Figure 4A The fluid delivery device 8 is inserted into the injection port. Specifically, the fluid delivery device 8 is inserted into the receiving cavity 102 of the housing 100 through an opening at the proximal end of the housing 100. The fluid delivery device 8 engages with the proximal end 208 of the guide bushing 200.

[0071] exist Figure 4B In this process, force F is applied to the fluid conveying device 8, which propels the guide bushing 200 distally. As the guide bushing 200 moves within the receiving cavity 102 of the housing 100, the key 206 in the guide bushing 200 (such as...) Figures 5A-5B (As shown) along the slot 110 of the housing 100 (as shown) Figures 5A-5B (As shown) slides. Furthermore, as the guide bushing 200 is advanced distally, the rigid guide bushing 200 applies a force F to the outer surface of the elastic member 300. As a result, the elastic member 300 moves from its default position (as shown)... Figure 4A (As shown) to switch to the flow position (e.g.) Figure 4B (As shown). In the flow position, the fluid delivery device 8, the inner cavity 202 of the guide bushing 200, the orifice 204 of the guide bushing 200, and the delivery cavity 108 of the housing 100 are in fluid communication with each other. This means that in the flow position, fluid will travel from the fluid delivery device 8 to the delivery cavity 108 (along the second flow path f2).

[0072] When fluid delivery is complete, the fluid delivery device 8 is withdrawn from the receiving cavity 102 of the housing 100. As a result, force F is removed from the guide bushing 200 and the elastic member 300. As the elastic member 300 returns to its default position, it applies an elastic or rebound force to the guide bushing 200. The elasticity of the elastic member 300 ensures that the second flow path f2 is quickly closed, which limits the upward return of fluid to the inner cavity 202 of the guide bushing 200 and prevents leakage from the injection port.

[0073] This disclosure also provides a method for manufacturing a leak-proof injection port. The method initially provides a housing (which may include a molded housing), such as... Figure 6 The housing 100 shown has at least two lumens: a receiving lumen 102 and a delivery lumen 108.

[0074] The receiving cavity 102 may have a uniform diameter or a gradually tapering diameter. Optionally, the receiving cavity 102 may have multiple segments, each segment having a uniform diameter different from at least one other segment. The receiving cavity 102 is transverse relative to the delivery cavity 108 and is fluidly connected to the delivery cavity 108.

[0075] The delivery cavity 108 may have multiple segments, each segment having a diameter different from at least one other segment. Any given segment may have a tapering diameter or a uniform / uniform diameter. Optionally, the delivery cavity 108 is not divided into multiple segments and has a tapering diameter. In an embodiment where the delivery cavity 108 is constituted by a segment with a tapering diameter, the elastic member (whose manufacture will be described in more detail below) has a correspondingly tapering diameter, such that the elastic member can be fitted snugly within the delivery cavity 108.

[0076] Providing housing 100 also includes inserting one or more slots 110 into the receiving lumen 102 of housing 100. When housing 100 is molded, the slots 110 may be cut into the surface of the receiving lumen 102 or molded into housing 100. The slots 110 begin at a distal portion of the receiving lumen 102, near the delivery lumen 108, and extend distally toward the delivery lumen 108. In some embodiments, the slots 110 extend into the delivery lumen 108.

[0077] Next, provide elastic components, such as Figure 8 The elastic member 300 is shown. The elastic member 300 is generally cylindrical, hollow, and made of an elastic material such as silicon. The elastic member 300 is positioned inside the delivery cavity 108 of the housing 100. The elastic member 300 is sized to fit snugly within the delivery cavity and is radially outwardly supported against the delivery cavity in its default position.

[0078] After the elastic member 300 is placed inside the delivery cavity 108, a guide bushing is provided, such as Figure 7The guide bushing 200 is shown. The guide bushing 200 includes an inner cavity 202, an orifice 204 in fluid communication with the inner cavity 202, and one or more keys 206 protruding from the outer surface of the guide bushing 200. The guide bushing 200 is made of a rigid material and can be molded to include the inner cavity 202, the orifice 204, and the keys 206. Optionally, the guide bushing 200 begins as a hollow cylinder and is manufactured by cutting the orifice 204 into the outer surface of the hollow cylinder and applying the keys 206 to the outer surface of the hollow cylinder. Optionally, the guide bushing 200 begins as a solid cylinder, from which the inner cavity 202 and the orifice 204 are cut, and the keys 206 are applied to the outer surface of the solid cylinder.

[0079] Finally, the guide bushing 200 is positioned within the receiving cavity 102 of the housing 100. This includes connecting the key 206 of the guide bushing 200 to the slot 110 of the housing 100. When the resilient member 300 is in its default position, the guide bushing 200 rests on top of the resilient member 300.

[0080] Description of this technical topic

[0081] For example, the subject matter technique is illustrated according to the various aspects described below. For convenience, various examples of the various aspects of the subject matter technique are described according to numbered articles (1, 2, 3, etc.). These are provided by way of example only and do not limit the subject matter technique. It should be noted that any subordinate articles can be combined in any combination and placed in corresponding independent articles, such as article 1, article 9, or article 16. Other articles can be presented in a similar manner.

[0082] Clause 1. A leak-proof injection port for a fluid connection device, the injection port comprising: a housing including a receiving cavity and a delivery cavity, wherein the delivery cavity is transverse to the receiving cavity and intersects the most distal end of the receiving cavity; a guide bushing disposed within the receiving cavity and configured to receive a fluid delivery device, wherein the guide bushing includes an inner cavity and an orifice fluidly connected to the inner cavity; and an elastic member disposed within the delivery cavity and configured to restrict fluid flow through the delivery cavity in a default position and fluidly connect the fluid delivery device and the delivery cavity in a flow position, wherein the elastic member is configured to be compressed to the flow position when the guide bushing receives the fluid delivery device.

[0083] Clause 2. The injection port according to Clause 1, wherein the injection port is configured to fluidly connect the fluid delivery device to one or more extension tubes, IV cannulas, or plug valves.

[0084] Clause 3. The injection port according to Clause 1, wherein the housing includes a slot and the guide bushing includes a key movably coupled to the slot.

[0085] Clause 4. The injection port according to Clause 3, wherein the slot is located at the distal portion of the receiving lumen and adjacent to the delivery lumen.

[0086] Clause 5. The injection port according to Clause 3, wherein the slot and the key are configured to facilitate continuous contact between the guide bushing and the resilient member.

[0087] Clause 6. The injection port according to Clause 3, wherein the key is configured to advance distally along the slot when the guide bushing receives the fluid delivery device, and is configured to slide proximally along the slot when the fluid delivery device is withdrawn from the guide bushing.

[0088] Clause 7. The injection port according to Clause 1, wherein the guide bushing comprises a material that is more rigid than the elastic member.

[0089] Clause 8. The injection port according to Clause 1, wherein the guide bushing receives the fluid delivery device at a proximal end of the guide bushing and contacts the elastic member at a distal end of the guide bushing.

[0090] Clause 9. The injection port according to Clause 1, wherein the guide bushing is configured to be advanced distally by the fluid delivery device to compress the resilient member from the default position to the flow position.

[0091] Clause 10. The injection port according to Clause 1, wherein the guide bushing has a first height, the hole has a second height, and the ratio of the first height to the second height is approximately 3.

[0092] Clause 11. The injection port according to Clause 1, wherein the hole is located at the distal portion of the guide bushing.

[0093] Clause 12. The injection port according to Clause 1, wherein the orifice is configured to fluidly connect the inner lumen and the delivery lumen when the guide bushing receives the fluid delivery device and compresses the elastic member into the flow position.

[0094] Clause 13. The injection port according to Clause 1, wherein the elastic member comprises a hollow column.

[0095] Clause 14. The injection port according to Clause 1, wherein the hollow cylinder includes an inner diameter and an outer diameter, and the ratio of the outer diameter to the inner diameter is approximately 1.5.

[0096] Clause 15. The injection port according to Clause 1, wherein the elastic member is configured to radially outwardly support the delivery lumen.

[0097] Clause 16. The injection port according to Clause 1, wherein the elastic member comprises an elastic material and is configured to elastically transition from the flow position to the default position when the fluid delivery device is withdrawn from the guide bushing.

[0098] Clause 17. A guide bushing for a leak-proof injection port, the guide bushing being configured to be movably coupled to a housing and including an inner lumen, an orifice fluidly connected to the inner lumen, and a key protruding from an outer surface of the guide bushing, wherein the guide bushing is configured to receive a fluid delivery device, the fluid delivery device being advanced distally to displace an elastic member coupled to the housing and to facilitate fluid flow through the housing.

[0099] Clause 18. The guide bushing according to Clause 17, wherein the key is configured to be movably coupled to a slot in the housing of the leak-proof injection port.

[0100] Clause 19. The guide bushing according to Clause 17, wherein the hole is located on the distal portion of the guide bushing.

[0101] Item 20. A method for manufacturing a leak-proof injection port, the method comprising: providing a housing including a receiving lumen, a slot on a surface of a distal portion of the receiving lumen, and a delivery lumen transverse to and intersecting the distal end of the receiving lumen; providing an elastic member, wherein the elastic member is hollow and cylindrical; positioning the elastic member within the delivery lumen, wherein the elastic member is outwardly supported against the delivery lumen in a default position; providing a guide bushing including an inner lumen, an orifice fluidly connected to the inner lumen, and a key projecting from an outer surface of a distal portion of the guide bushing; and positioning the guide bushing within the receiving lumen such that the key is movably coupled to the slot, and the distal end of the guide bushing abuts the elastic member, wherein the guide bushing is configured to be advanced distally by a fluid delivery means, thereby compressing the elastic member to a flow position and fluidly connecting the inner lumen to the delivery lumen via the orifice.

[0102] Other considerations:

[0103] In some embodiments, any of the clauses herein can depend on any of the independent clauses or any of the dependent clauses. In one aspect, any of the clauses (e.g., dependent or independent clauses) can be combined with any other one or more clauses (e.g., dependent or independent clauses). In one aspect, a claim can include some or all of the text (e.g., steps, operations, means, or components) recited in a clause, sentence, phrase, or paragraph. In one aspect, a claim can include some or all of the text recited in one or more clauses, sentences, phrases, or paragraphs. In one aspect, some of the text in each of the clauses, sentences, phrases, or paragraphs can be removed. In one aspect, additional text or elements can be added to a clause, sentence, phrase, or paragraph. In one aspect, the subject matter can be implemented without utilizing some of the components, elements, functions, or operations described herein. In one aspect, the subject matter can be implemented using additional components, elements, functions, or operations.

[0104] This disclosure is provided to enable those skilled in the art to practice the various aspects described herein. This disclosure provides various examples of the subject matter, and the subject matter is not limited to these examples. Numerous modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects.

[0105] Unless otherwise expressly stated, elements referred to in the singular are not intended to mean "one and only one," but rather "one or more." Unless otherwise expressly stated, the term "some" refers to one or more. Masculine pronouns (e.g., his) include feminine and neuter genders (e.g., her and its), and vice versa. The use of titles and subtitles (if any) is for convenience only and does not limit the invention.

[0106] The term “exemplary” is used herein to mean “serving as an example or illustration.” Any aspect or design described herein as “exemplary” should not be construed as preferred or advantageous to other aspects or designs. In one respect, the various alternative configurations and operations described herein may be considered at least equivalent.

[0107] For example, phrases like "aspect" do not imply that such an aspect is essential to the present subject matter, or that such an aspect applies to all configurations of the present subject matter. Disclosure relating to an aspect may apply to all configurations or one or more configurations. An aspect may provide one or more examples. For example, phrases like "an aspect" may refer to one or more aspects, and vice versa. For example, phrases like "an embodiment" do not imply that such an embodiment is essential to the present subject matter, or that such an embodiment applies to all constructions of the present subject matter. Disclosure relating to an embodiment may apply to all embodiments or one or more embodiments. An embodiment may provide one or more examples. For example, phrases like "an embodiment" may refer to one or more embodiments, and vice versa. For example, phrases like "configuration" do not imply that such a configuration is essential to the present subject matter, or that such a configuration applies to all configurations of the present subject matter. Disclosure relating to a configuration may apply to all configurations or one or more configurations. A configuration may provide one or more examples. The phrase "such construction" may refer to one or more constructions, and vice versa.

[0108] In one respect, unless otherwise stated, all measurements, numerical values, ratings, positions, sizes, dimensions, and other specifications set forth in this specification, including those in the appended claims, are approximate, not precise. In another respect, they are intended to have a reasonable range consistent with the functions they pertain to and with the custom of the art to which they belong.

[0109] In one respect, the term "linkage" can refer to a direct connection. In another respect, the term "linkage" can refer to an indirect connection.

[0110] For example, the terms “top,” “bottom,” “front,” “rear,” etc., used in this disclosure should be understood to refer to any frame of reference rather than a general gravitational frame of reference. Therefore, the top surface, bottom surface, front surface, and rear surface can extend upward, downward, diagonally, or horizontally in a gravitational frame of reference.

[0111] Various items may be arranged differently (e.g., in different orders or divided in different ways) without departing from the scope of the subject matter. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure are known to or will be known to those skilled in the art, as expressly incorporated herein by reference and intended to be covered by the claims. Furthermore, the disclosure herein is not intended to be made public, whether or not such disclosure is expressly recited in the claims. No claim element may be construed as a means or step for performing a particular function without a description of the structure, material, or action thereof, unless the element is expressly stated using the phrase “for means of…” or, in the case of a method claim, the element is stated using the phrase “for steps of…”. In addition, the scope of the terms “comprising,” “having,” etc., is intended to be inclusive in a manner similar to the term “including,” as interpreted when “including” is used as a transitional word in the claims.

[0112] The title, background, summary, description of the drawings, and abstract of this disclosure are incorporated herein by reference and are provided as illustrative examples rather than as limiting descriptions. This application is filed on the understanding that they will not be used to limit the scope or meaning of the claims. Furthermore, in the detailed description, it will be apparent that the description provides illustrative examples, and various features are combined in various embodiments to simplify the disclosure. This disclosure approach should not be construed as reflecting an intention that the claimed subject matter requires more features than expressly stated in each claim. Rather, as reflected in the appended claims, the inventive subject matter lies in all features of fewer than those in a single disclosure configuration or operation. The appended claims are thus incorporated into the detailed description, wherein each claim is independently claimed as a separate subject matter.

[0113] The claims are not intended to be limited to the aspects described herein, but rather to conform to the full scope consistent with the language claims and to include all legal equivalents. Nevertheless, no claim is intended to include subject matter that does not meet the requirements of patent law, nor should it be interpreted in this manner.

Claims

1. A leak-proof injection port for a fluid connection device, the injection port comprising: A housing comprising a receiving cavity and a delivery cavity, wherein the delivery cavity is transverse to the receiving cavity and intersects with the farthest end of the receiving cavity; A guide bushing, disposed within the receiving cavity and configured to receive a fluid delivery device, wherein the guide bushing includes an inner cavity and an orifice fluidly connected to the inner cavity; and An elastic member is disposed within the delivery cavity and configured to restrict fluid flow through the delivery cavity in a default position, and fluidly connects the fluid delivery device and the delivery cavity in a flow position, wherein the elastic member is configured to be compressed into the flow position when the guide bushing receives the fluid delivery device.

2. The injection port according to claim 1, wherein, The injection port is configured to fluidly connect the fluid delivery device to one or more extension tubes, IV cannulas, or plug valves.

3. The injection port according to claim 1, wherein, The housing includes a slot, and the guide bushing includes a key movably coupled to the slot.

4. The injection port according to claim 3, wherein, The slot is located at the distal portion of the receiving cavity and adjacent to the delivery cavity.

5. The injection port according to claim 3, wherein, The slot and the key are configured to facilitate continuous contact between the guide bushing and the elastic member.

6. The injection port according to claim 3, wherein, The key is configured to advance distally along the slot when the guide bushing receives the fluid delivery device, and is configured to slide proximally along the slot when the fluid delivery device is withdrawn from the guide bushing.

7. The injection port according to claim 1, wherein, The guide bushing comprises a material that is more rigid than the elastic member.

8. The injection port according to claim 1, wherein, The guide bushing receives the fluid delivery device at its proximal end and contacts the elastic member at its distal end.

9. The injection port according to claim 1, wherein, The guide bushing is configured to be advanced distally by the fluid delivery device to compress the elastic member from the default position to the flow position.

10. The injection port according to claim 1, wherein, The guide bushing has a first height, the hole has a second height, and the ratio of the first height to the second height is approximately 3.

11. The injection port according to claim 1, wherein, The hole is located on the distal portion of the guide bushing.

12. The injection port according to claim 1, wherein, When the guide bushing receives the fluid delivery device and compresses the elastic member into the flow position, the orifice is configured to fluidly connect the inner lumen and the delivery lumen.

13. The injection port according to claim 1, wherein, The elastic member includes a hollow column.

14. The injection port according to claim 1, wherein, The hollow cylinder includes an inner diameter and an outer diameter, and the ratio of the outer diameter to the inner diameter is approximately 1.

5.

15. The injection port according to claim 1, wherein, The elastic member is configured to radially outward support against the delivery cavity.

16. The injection port according to claim 1, wherein, The elastic member comprises an elastic material and is configured to elastically transition from the flow position to the default position when the fluid delivery device is withdrawn from the guide bushing.

17. A guide bushing for a leak-proof injection port, the guide bushing being configured to be movably coupled to a housing and including an inner lumen, an orifice fluidly connected to the inner lumen, and a key projecting from an outer surface of the guide bushing, wherein, The guide bushing is configured to receive a fluid delivery device, which is advanced distally to displace an elastic member coupled to the housing and to facilitate fluid flow through the housing.

18. The guide bushing according to claim 17, wherein, The key is configured to be movably engaged with a slot in the housing of the leak-proof injection port.

19. The guide bushing according to claim 17, wherein, The hole is located on the distal portion of the guide bushing.

20. A method for manufacturing a leak-proof injection port, the method comprising: A housing is provided, the housing including a receiving cavity, a slot on a surface of a distal portion of the receiving cavity, and a delivery cavity transverse to the receiving cavity and intersecting the distal end of the receiving cavity; An elastic member is provided, wherein the elastic member is hollow and cylindrical; The elastic member is positioned within the delivery tube cavity, wherein the elastic member, in its default position, supports outward against the delivery tube cavity. A guide bushing is provided, the guide bushing including an inner lumen, an orifice fluidly connected to the inner lumen, and a key projecting from the outer surface of a distal portion of the guide bushing; and The guide bushing is positioned within the receiving cavity such that the key is movably connected to the slot, and the distal end of the guide bushing abuts the elastic member. The guide bushing is configured to be advanced distally by the fluid delivery device, thereby compressing the elastic member to a flow position and fluidly connecting the inner lumen to the delivery lumen via the orifice.

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