Catheter system facilitating blood collection and related methods

Abstract

A catheter system includes a catheter adapter including a distal end, a proximal end, a lumen extending through the distal end and the proximal end, and a side port in fluid communication with the lumen; a catheter extending distally from the catheter adapter; a septum disposed within the lumen of the catheter adapter, wherein the septum includes a first slit and a second slit substantially parallel to the first slit, wherein the first slit is substantially aligned with a longitudinal axis of the catheter, wherein the second slit is offset from the longitudinal axis of the catheter; a needle hub; and a guide needle secured within the needle hub, wherein the guide needle is aligned with the longitudinal axis of the catheter and extends through the catheter and the first slit of the septum.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a catheter system that facilitates blood collection and related methods. BACKGROUND

[0002] Intravenous catheters are commonly used for various infusion therapies. For example, intravenous catheters can be used to infuse fluids such as saline solutions, various medications, and total parenteral nutrition into a patient. Intravenous catheters can also be used to withdraw blood from a patient.

[0003] A common type of intravenous catheter is a peripheral intravenous (IV) catheter ("PIVC"), a peripherally inserted central catheter ("PICC"), and a midline catheter. Intravenous catheters can include "over-the-needle" catheters that can be mounted over a needle having a sharp distal tip. The sharp distal tip can be used to pierce the skin and vasculature of a patient. The intravenous catheter can be inserted into the vasculature after the vasculature is pierced by the needle. The needle and intravenous catheter are typically inserted through the skin into the vasculature of a patient at a small angle, with the bevel of the needle facing upward and away from the skin of the patient.

[0004] To verify proper placement of the introducer needle and / or intravenous catheter in the vasculature, a user typically confirms the presence of a flash of blood that can be visible to the user. In some cases, the introducer needle can include a notch disposed toward the distal end of the introducer needle, and in response to the distal tip of the introducer needle being positioned within the vasculature, blood can flow proximally through the needle lumen, exit the needle lumen through the notch, and then travel proximally between the outer surface of the introducer needle and the inner surface of the intravenous catheter.

[0005] Accordingly, with the intravenous catheter at least partially transparent, the user can see a small amount of blood "flash" and thereby confirm placement of the intravenous catheter within the vasculature. The presence of a vasculature entry sign, such as a blood flash, can contribute to successful placement of the intravenous catheter. Once placement of the introducer needle within the vasculature has been confirmed, the user can temporarily occlude flow in the vasculature and withdraw the introducer needle, leaving the intravenous catheter in place for future blood withdrawal and / or fluid infusion.

[0006] The subject matter claimed herein is not limited to implementations that solve any disadvantages or that operate only in environments such as those described above. Rather, this background is included as merely representative of one example technology area where certain example implementations can be practiced. SUMMARY

[0007] The present disclosure relates generally to a catheter system that facilitates blood collection, and related devices and methods. In certain embodiments, a catheter system can include a catheter adapter that can include a distal end, a proximal end, a lumen extending through the distal end and the proximal end, and a side port in fluid communication with the lumen. In certain embodiments, the catheter system can include a catheter secured within the catheter adapter and extending distally therefrom.

[0008] In certain embodiments, the catheter system can include a septum disposed within the lumen of the catheter adapter. In certain embodiments, the septum can include a first slit and / or a second slit substantially parallel to the first slit. In certain embodiments, the first slit can be substantially aligned with a longitudinal axis of the catheter. In certain embodiments, the second slit can be offset from the longitudinal axis of the catheter. In certain embodiments, the proximal end of the catheter adapter can include a proximal opening. In certain embodiments, the longitudinal axis of the catheter can be offset from a center of the proximal opening.

[0009] In certain embodiments, the catheter system can include a needle hub and a guide needle secured within the needle hub. In certain embodiments, the guide needle can be aligned with the longitudinal axis of the catheter. In certain embodiments, the guide needle can extend through the catheter and the first slit of the septum. In certain embodiments, the septum can accommodate a blood collection device and the guide needle. In certain embodiments, the septum can include a substantially elliptical shape having a cutout along a plane angled relative to the longitudinal axis of the catheter. In certain embodiments, the cutout can form a first face at a distal end of the septum. In certain embodiments, the distal end of the septum can include a first face and a second face. In certain embodiments, the second face can be proximate the first face and / or substantially perpendicular to the longitudinal axis of the catheter.

[0010] In certain embodiments, the septum can include a channel extending along and / or through the first face. In certain embodiments, the channel can extend from the side port toward the longitudinal axis of the catheter. In certain embodiments, the catheter adapter can include a slot aligned with the second slit and extending from the proximal end of the catheter adapter.

[0011] In certain embodiments, the catheter system can include a winged needle set that can include one or more of: a body; a tab extending outwardly from the body; a needle extending distally from the body and extending through a second slit of the septum; and an extension tube extending from the body. In certain embodiments, the tab can be disposed within the slot. In certain embodiments, the winged needle set can include an adapter coupled to a proximal end of the extension tube. In certain embodiments, the winged needle set can include a plug that plugs a proximal end of the adapter. In certain embodiments, a proximal end of the plug can be configured to be coupled to a blood collection device. In certain embodiments, the plug can provide air venting of the winged needle set and catheter system. In certain embodiments, a distal end of the needle of the winged needle set can be blunt or sharp.

[0012] In certain embodiments, a method of collecting blood can include priming a portion of the catheter system to a priming stop position. In certain embodiments, the priming stop position can be proximate to the side port. In certain embodiments, after priming the portion of the catheter system to the priming stop position, the catheter system can be inserted into a vasculature of a patient. In certain embodiments, after inserting the catheter system into the vasculature of the patient, the hub and the introducer needle can be removed from the catheter system. In certain embodiments, after removing the hub and the introducer needle from the catheter system, the winged needle set can be used to collect blood. In certain embodiments, after using the winged needle set to collect blood, the winged needle set can be removed from the catheter system. In certain embodiments, when the winged needle set is removed from the catheter system, blood can be disposed within the lumen distal of the septum and proximate to the priming stop position.

[0013] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as claimed. It should be understood that the various embodiments are not limited in their application to the arrangements and instrumentality shown in the drawings. It should also be understood that the embodiments can be combined, or that other embodiments can be utilized, and that structural changes can be made without departing from the scope of the various embodiments of the present application, as claimed. Accordingly, the following detailed description is not intended to limit the application, as claimed. BRIEF DESCRIPTION OF DRAWINGS

[0014] The exemplary embodiments will be described in further detail with reference to the drawings. The exemplary embodiments are described herein with reference to the following description and

[0015] Figure 1A is a top perspective view of an exemplary catheter system according to certain embodiments;

[0016] Figure 1B for Figure 1A A top perspective view of a catheter system according to certain embodiments, wherein exemplary needle components and exemplary winged needle assemblies are removed;

[0017] Figure 1C for Figure 1A Exploded view of a catheter system according to certain embodiments;

[0018] Figure 2A for Figure 1A An enlarged upper perspective view of a portion of a catheter system according to certain embodiments;

[0019] Figure 2B for Figure 2A An enlarged cross-sectional view of the portion according to certain embodiments;

[0020] Figure 2C for Figure 1A Another enlarged upper perspective view of a portion of a catheter system according to certain embodiments, showing an exemplary catheter adapter removed for illustrative purposes;

[0021] Figure 2D for Figure 1A A top perspective view of an exemplary diaphragm of a catheter system according to certain embodiments;

[0022] Figure 2E for Figure 1A A top perspective view of a catheter system according to certain embodiments, showing the removal of the needle assembly from the catheter system;

[0023] Figure 2F for Figure 1A A top perspective view of a catheter system according to certain embodiments, showing the removal of the needle assembly and winged needle assembly from the catheter system after blood aspiration;

[0024] Figure 3A for Figure 1A Upper perspective view of a winged needle assembly of a catheter system according to certain embodiments;

[0025] Figure 3B for Figure 1A Upper perspective view of an exemplary distal end of a winged needle assembly of a catheter system according to certain embodiments;

[0026] Figure 3C for Figure 1A Upper perspective view of another exemplary distal end of a winged needle assembly of a catheter system according to certain embodiments;

[0027] Figure 4A This is a top perspective view of another catheter system according to certain embodiments;

[0028] Figure 4B FIG. 1 is a perspective view of a catheter system according to certain embodiments; Figure 4A FIG. 2 is a perspective view of an upper portion of the catheter system of

[0029] Figure 4C FIG. 3 is a perspective view of an upper portion of another catheter system according to certain embodiments; and

[0030] Figure 4D FIG. 4 is a perspective view of an upper portion of the catheter system of Figure 4C FIG. 5 is a perspective view of an upper portion of the catheter system of DETAILED DESCRIPTION

[0031] All examples and conditional language recited herein are intended to be construed to be illustrative only and not restrictive in nature. The scope of the application is defined by the appended claims, along with the full scope of equivalents to which such claims are entitled. Although the present application has been described in detail with reference to certain embodiments, it should be understood that various changes, substitutions, and alterations could be made hereto without departing from the spirit and scope of the application.

[0032] Referring now to Figures 1A-1C In certain embodiments, catheter system 10 can include catheter adapter 12, which can include distal end 14, proximal end 16, lumen 18 extending through distal end 14 and proximal end 16, and side port 20 in fluid communication with lumen 18. In certain embodiments, catheter system 10 can include catheter 22 secured within catheter adapter 12 and extending distally therefrom.

[0033] In certain embodiments, catheter system 10 can include septum 24 disposed and secured within lumen 18 of catheter adapter 12. In certain embodiments, septum 24 can include first slit 26 and / or second slit 28, which can be substantially parallel to first slit 26. In certain embodiments, first slit 26 can be substantially aligned with longitudinal axis 30 of catheter 22. In certain embodiments, second slit 28 can be offset from longitudinal axis 30 of catheter 22. In certain embodiments, proximal end 16 of catheter adapter 12 can include proximal opening 32. In certain embodiments, longitudinal axis 30 of catheter 22 can be offset from the center of proximal opening 32. In certain embodiments, the outer surface of catheter adapter 12 and / or lumen 18 can include a substantially oval shape.

[0034] In certain embodiments, catheter system 10 can include a needle assembly, which can include a needle hub 36 and a guide needle 38 secured within needle hub 36. In certain embodiments, guide needle 38 can be aligned with longitudinal axis 30 of catheter 22. In certain embodiments, guide needle 38 can extend through catheter 22 and first slit 26 of septum 24. In certain embodiments, guide needle 38 can extend distally beyond the distal end of catheter 22. In certain embodiments, guide needle 38 can include a sharp distal tip, which can be used to puncture a patient's vasculature.

[0035] In certain embodiments, catheter system 10 can include a winged needle set 40, which can include one or more of: a body 42; a tab 44 extending outwardly from body 42; a needle 46 extending distally from body 42 and extending through second slit 28 of septum 24; and an extension tube 48 extending from body 42. In certain embodiments, catheter adapter 12 can include a slot 50 aligned with second slit 28 and extending from proximal end 16 of catheter adapter 12. In certain embodiments, tab 44 can be disposed within slot 50. In certain embodiments, slot 50 can assist in securing tab 44 and winged needle set 40 within catheter adapter 12. In certain embodiments, tab 44 can facilitate removal of winged needle set 40 from catheter system 10 after blood has been collected from a patient's vasculature by winged needle set 40.

[0036] In certain embodiments, winged needle set 40 can include an adapter 52, which can be coupled to the proximal end of extension tube 48. In certain embodiments, the proximal end of extension tube 48 can be integrated into adapter 52. In certain embodiments, adapter 52 can include a luer adapter (which can be straight), or another suitable adapter. In certain embodiments, winged needle set 40 can include a plug 54 that plugs the proximal end of adapter 52. In certain embodiments, the proximal end of plug 54 can be configured to be coupled to a blood collection device. In certain embodiments, plug 54 can include a BD VACUTAINER adapter. In certain embodiments, the blood collection device can include a blood collection tube, a BD VACUTAINER tube, or a similar tube, which can include an air-tight seal at an open end and a vacuum.

[0037] In certain embodiments, the proximal end of the plug 54 can include a cannula that can extend in a proximal direction from the plug 54. In certain embodiments, the elastomeric boot 58 can be coupled to the plug 54, and the proximal end of the cannula can be enclosed within the elastomeric boot 58. In certain embodiments, the elastomeric boot 58 can include an open distal end and a closed proximal end. In certain embodiments, in response to the blood collection device urging the elastomeric boot 58 distally, the cannula can puncture the elastomeric boot 58, and the cannula can be inserted into the blood collection device. In certain embodiments, the plug 54 can include any suitable plug configured to couple to the blood collection device. In certain embodiments, the adapter 52 can be coupled to the blood collection device via the plug 54.

[0038] In certain embodiments, the plug 54 can provide air venting for the winged needle set 40 and the catheter system 10. In certain embodiments, the plug 54 can include an air vent 56 that can include a porous membrane, micro-slots, or any other suitable air vent configured to pass air but not blood. In certain embodiments, the air vent 56 can be configured to provide continuous blood flashback as a result of air exiting the catheter system 10 at the air vent 56.

[0039] In certain embodiments, the guide needle 38 can be composed of metal or another suitable material. In certain embodiments, the catheter 22 and / or the catheter adapter 12 can be composed of polyisoprene, polyimide, latex, polyurethane, nylon, polyethylene, plastic, or another suitable material. In certain embodiments, the septum 24 can be composed of an elastomer. For example, the septum 24 can be composed of silicone or another suitable material. In certain embodiments, the septum 24 can be integrally formed as a single unit.

[0040] In certain embodiments, the distal end of the extension tube 60 can be integrated with the side port 20 of the catheter adapter 12. In certain embodiments, the proximal end of the extension tube 60 can be integrated with an adapter 62 that can include a luer adapter or another suitable adapter. In certain embodiments, the adapter 62 can be coupled to a needleless connector 64, such as a BD SMARTSITE needleless connector, a BD MAXZERO needleless connector, or a BD Q-SYTE needleless connector. In certain embodiments, a fluid infusion or perfusion device (e.g., a syringe) can be coupled to the needleless connector 64. In certain embodiments, a pinch clamp 66 can be coupled to the extension tube 60 and configured to occlude or block fluid flow through the extension tube 60 in response to the pinch clamp 66 being in a pinched or closed position.

[0041] In certain embodiments, a method of collecting blood can include priming a portion of the catheter system 10 to a priming stop location 68. In certain embodiments, the priming stop location 68 can be proximal to the side port 20. In certain embodiments, the priming stop location 68 can be disposed outside of the side port 20 and substantially flush with the exterior opening of the side port 20 such that the priming stop location 68 can be visible to a user.

[0042] In certain embodiments, a priming solution 70 can be coupled to the needleless connector 64 and the catheter system 10 can be primed from the needleless connector 64 to the priming stop location 68. In certain embodiments, in response to the catheter system 10 being primed from the needleless connector 64 to the priming stop location 68, the pinch clamp 66 can be caused to move to the closed position. In certain embodiments, the priming solution 70 can include a saline solution or another suitable material. In certain embodiments, after the portion of the catheter system 10 is primed to the priming stop location 68, the catheter system 10 can be inserted into the vasculature of a patient. In particular, the catheter 22 and the introducer needle 38 can be inserted into the vasculature of a patient.

[0043] Figure 1A The catheter system 10 is shown after being primed to the priming stop location 68 and inserted into the vasculature of a patient, in accordance with certain embodiments. In certain embodiments, the pinch clamp 66 can remain in the closed position during and / or after the catheter system 10 is inserted into the vasculature. In certain embodiments, in response to the catheter system 10 being inserted into the vasculature of a patient, blood 72 can flow through the introducer needle 38 or the slot in the catheter 22 into the space between the introducer needle 38 and the catheter 22. The blood 72 can then travel proximally into the lumen 18 distal of the septum 24. In certain embodiments, the blood 72 can flow through the winged needle set 40 as the needle 46 of the winged needle set 40 extends through the septum 24. In certain embodiments, the blood 72 can correspond to a blood flash, indicating to a user that the catheter 22 is present within the vasculature.

[0044] In certain embodiments, the needle assembly can be removed from the catheter system 10, which can facilitate a more rapid blood collection through the catheter 22. In these embodiments, the blood 72 can flow through the catheter 22, which can not include the introducer needle 38 extending therethrough. In certain embodiments, the blood 72 can flow through the winged needle set 40 and into a blood collection device as the needle 46 of the winged needle set 40 extends through the septum 24.

[0045] As Figure 1BAs shown, for example, after the catheter system 10 is inserted into the patient's vascular system, the needle hub 36 and guide needle 38 can be removed from the catheter system 10. In some embodiments, after removing the needle hub 36 and guide needle 38 from the catheter system 10, blood 72 can be collected using the winged needle assembly 40. In some embodiments, after collecting blood 72 using the winged needle assembly 40, the winged needle assembly 40 can be removed from the catheter system 10. In some embodiments, after collecting blood 72 using the winged needle assembly 40, the winged needle assembly 40 can remain connected to the catheter adapter 12, extending through the diaphragm 24 for infusion. In some embodiments, when the winged needle assembly 40 is removed from the catheter system 10, blood can be placed in the lumen 18 distal to the diaphragm 24 and near the infusion stop position 68.

[0046] Now for reference Figures 2A-2F In some embodiments, the diaphragm 24 may comprise a generally elliptical shape having a cut along a plane 74 angled relative to the longitudinal axis 30 of the catheter 22. In some embodiments, the cut may form a first surface 76 at the distal end 78 of the diaphragm. In some embodiments, the distal end 78 of the diaphragm 24 may include the first surface 76 and a second surface 80. In some embodiments, the second surface 80 may be adjacent to the first surface 76 and / or generally perpendicular to the longitudinal axis 30 of the catheter 22. In some embodiments, a first suture 26 and / or a second suture 28 may extend from the proximal end 82 of the diaphragm 24. In some embodiments, the proximal end 82 may be generally elliptical.

[0047] In some embodiments, the diaphragm 24 may include a groove or channel 84 extending along and / or through the first surface 76. In some embodiments, the channel 84 may extend from the side port 20 toward the longitudinal axis 30 of the conduit. In some embodiments, the channel 84 may facilitate fluid flow between the side port 20 and the lumen 18.

[0048] Figure 2E The diagram illustrates a catheter system 10 after it has been perfused to the perfusion stop position 68 and inserted into the patient's vascular system, according to certain embodiments. In some embodiments, such as Figure 2F As shown, after the catheter system 10 is inserted into the patient's vascular system, the needle hub 36 and guide needle 38 can be removed from the catheter system 10. In some embodiments, when the winged needle assembly 40 is removed from the catheter system 10, blood 72 can be placed in the lumen 18 distal to the diaphragm 24 and near the perfusion stop position 68.

[0049] Now for reference Figures 3A-3C This illustrates a winged needle assembly 40 according to certain embodiments. In some embodiments, the distal end of the needle 46 may be blunt (e.g., as shown in the image). Figure 3BAs shown) or sharp (e.g., as shown) Figure 3C (As shown in the diagram). In some embodiments, the catheter system 10 may provide the freedom to use a needle 46 having a larger size or specification than the guide needle 38, which may in some cases be limited to 24g or 26g, depending on the application. Therefore, the needle 46 may facilitate higher flow rates and / or reduce hemolysis. In some embodiments, the catheter system 10 may be pre-assembled with a winged needle assembly 40 extending through the septum 24, which may reduce potential contamination and / or increase user-friendliness.

[0050] Now for reference Figures 4A-4B This illustrates another catheter system 85 according to certain embodiments. In some embodiments, the catheter system 85 may be compatible with, with respect to one or more of its included components and / or operations, for... Figures 1A-3C The described catheter system 10 is similar or identical. In some embodiments, a winged needle assembly 40 may be inserted into another side port 86, which may be in fluid communication with a lumen 18. In some embodiments, the other side port 86 (through which the winged needle assembly 40 may be inserted) may facilitate flushing of residual blood after blood collection. In some embodiments, a diaphragm 88 disposed within the other side port 86 and / or lumen 18 may be configured such that the winged needle assembly 40 is inserted through the diaphragm to communicate with the lumen 18. In some embodiments, a guide needle 38 may be inserted through the diaphragm 88 or another diaphragm disposed within the lumen 18.

[0051] Now for reference Figures 4C-4D This illustrates another catheter system 90 according to certain embodiments. In some embodiments, the catheter system 90 may be compatible with, with respect to one or more of its included components and / or operations, for... Figures 1A-3C The described catheter system 10 and / or for Figures 4A-4D The described catheter system 85 is similar or identical. In some embodiments, the distal end of the extension tube 48 may be integrated with another side port 86. Figure 4D In this embodiment, after blood is aspirated from the patient's vascular system, the plug 54 is replaced with a needleless connector 64, which can facilitate flushing. In some embodiments, one or more needleless connectors 64 can be used to flush the catheter system 90. In some embodiments, the dual-extension tubing configuration of the catheter system 90 can facilitate immediate blood collection as the catheter is inserted into the vascular system and facilitate parallel drug delivery. In some embodiments, blood aspiration can be initiated at any point during the indwelling period of the catheter system 90 by replacing one of the needleless connectors 64 with the plug 54.

[0052] The application can be embodied in other specific forms without departing from its structures, methods, or other essential characteristics as broadly described herein and claimed hereinafter. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the application is, therefore, indicated by the appended claims, rather than by the foregoing description. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. A catheter system, characterized in that, The catheter system includes: A catheter adapter includes a distal end, a proximal end, a lumen extending through the distal end and the proximal end, and a side port in fluid communication with the lumen, wherein the catheter adapter further includes a slot extending from the proximal end of the catheter adapter; A catheter extending distally from the catheter adapter; A diaphragm disposed within the lumen of the catheter adapter, wherein the diaphragm includes a first slit and a second slit parallel to the first slit, wherein the first slit is aligned with the longitudinal axis of the catheter, wherein the second slit is offset from the longitudinal axis of the catheter, and wherein the slot is aligned with the second slit. Needle hub; and A guide needle fixed within the needle hub, wherein the guide needle is aligned with the longitudinal axis of the catheter and extends through a first slit in the catheter and the diaphragm.

2. The catheter system according to claim 1, characterized in that, The diaphragm has an elliptical shape with a cut along a plane angled relative to the longitudinal axis of the conduit.

3. The catheter system according to claim 2, characterized in that, The incision forms a first surface at the distal end of the diaphragm, wherein the distal end of the diaphragm includes the first surface and a second surface, wherein the second surface and the first surface are adjacent and perpendicular to the longitudinal axis of the catheter.

4. The catheter system according to claim 3, characterized in that, The diaphragm includes a channel extending along the first surface, wherein the channel extends from the side port toward the longitudinal axis of the conduit.

5. The catheter system according to claim 1, characterized in that, The catheter system further includes a winged needle assembly, the winged needle assembly comprising: main body; A tab extending outward from the main body, wherein the tab is disposed within the slot; A needle extending distally from the main body and extending through a second slit in the diaphragm; An extension tube extending from the main body.

6. The catheter system according to claim 5, characterized in that, The winged needle assembly further includes: An adapter, the adapter being coupled to the proximal end of the extension tube; and A plug is used to block the proximal end of the adapter, wherein the proximal end of the plug is configured to be connected to a blood collection device, wherein the plug provides air venting for the winged needle assembly.

7. The catheter system according to claim 6, characterized in that, The distal end of the needle is blunt.

8. The catheter system according to claim 6, characterized in that, The distal end of the needle is sharp.

9. The catheter system according to claim 1, characterized in that, The proximal end of the catheter adapter includes a proximal opening, wherein the longitudinal axis of the catheter is offset from the center of the proximal opening.

10. A catheter system, comprising: A catheter adapter, the catheter adapter including a distal end, a proximal end, a lumen extending through the distal end and the proximal end, and a side port in fluid communication with the lumen; A catheter extending distally from the catheter adapter; A diaphragm disposed within the lumen of the catheter adapter, wherein the diaphragm includes a first slit and a second slit parallel to the first slit, wherein the first slit is aligned with the longitudinal axis of the catheter, and wherein the second slit is offset from the longitudinal axis of the catheter. Needle hub; and A guide needle is fixed within the needle hub, wherein the guide needle is aligned with the longitudinal axis of the catheter and extends through a first opening between the catheter and the septum. The diaphragm has an elliptical shape with a cut along a plane angled relative to the longitudinal axis of the catheter. The cut forms a first surface at the distal end of the diaphragm. The distal end of the diaphragm includes the first surface and a second surface, wherein the second surface and the first surface are adjacent and perpendicular to the longitudinal axis of the catheter. The diaphragm includes a channel extending along the first surface, wherein the channel extends from the side port toward the longitudinal axis of the conduit.

11. The catheter system according to claim 10, characterized in that, The catheter adapter further includes a slot extending from the proximal end of the catheter adapter, and the catheter system further includes a winged needle assembly comprising: main body; A tab extending outward from the main body, wherein the tab is disposed within the slot; A needle extending distally from the main body and through a second slit in the diaphragm; and An extension tube extending from the main body.

12. The catheter system according to claim 11, characterized in that, The winged needle assembly also includes: An adapter, the adapter being coupled to the proximal end of the extension tube; and A plug is used to block the proximal end of the adapter, wherein the proximal end of the plug is configured to be connected to a blood collection device, wherein the plug provides air venting for the winged needle assembly.

13. A catheter system, comprising: A catheter adapter includes a distal end, a proximal end, a lumen extending through the distal end and the proximal end, and a side port in fluid communication with the lumen, wherein the catheter adapter further includes a slot extending from the proximal end of the catheter adapter; A catheter extending distally from the catheter adapter; A diaphragm disposed within the cavity of the catheter adapter, wherein the diaphragm includes a first slit and a second slit parallel to the first slit, wherein the first slit is aligned with the longitudinal axis of the catheter, wherein the second slit is offset from the longitudinal axis of the catheter, and wherein the slot is laterally offset from the longitudinal axis of the catheter toward the side port. Needle hub; A guide needle fixed within the needle hub, wherein the guide needle is aligned with the longitudinal axis of the catheter and extends through a first slit between the catheter and the septum, and A winged needle assembly, the winged needle assembly comprising a tab disposed within the slot and a needle extending through a second slit through the diaphragm, wherein the needle is configured to receive blood flashback through the needle.

14. The catheter system according to claim 13, characterized in that, The diaphragm has an elliptical shape with a cut along a plane angled relative to the longitudinal axis of the conduit.

15. The catheter system according to claim 14, characterized in that, The incision forms a first surface at the distal end of the diaphragm, wherein the distal end of the diaphragm includes the first surface and a second surface, wherein the second surface and the first surface are adjacent and perpendicular to the longitudinal axis of the catheter.

16. The catheter system according to claim 15, characterized in that, The diaphragm includes a channel extending along the first surface, wherein the channel extends from the side port toward the longitudinal axis of the conduit.

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