Blood draw assembly and related devices and methods

Abstract

The present disclosure relates to blood draw assemblies and related devices and methods. A needle adapter can include a body that can include a distal end and a proximal end. The needle adapter can include a needle extending through the body. The needle can include a distal tip and a proximal tip. The distal tip can extend distally of the distal end of the body. The proximal tip can extend proximally of the proximal end of the body. The needle assembly can include a sheath coupled to the body and extending over the proximal tip. The needle assembly can include a hydrophobic vent element surrounding the body. The needle assembly can include a septum coupled to the distal end of the body.

Description

[0001] Cross-reference of related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 138,169, filed January 15, 2021, entitled “Blood-drawing components and related apparatus and methods,” the entire disclosure of which is incorporated herein by reference. Background Technology

[0003] Catheters are commonly used to deliver fluids into a patient's vascular system. For example, catheters can be used to infuse saline solutions, various medications, or total parenteral nutrition.

[0004] The catheter may include a peripheral venous (“IV”) catheter. In this case, the catheter may be mounted on a guide needle with a sharp distal end. The catheter and guide needle may be assembled such that the distal end of the guide needle extends beyond the distal end of the catheter, with the bevel of the needle facing upwards and away from the patient’s skin. The catheter and guide needle are typically inserted into the patient’s vascular system through the skin at a small angle.

[0005] To verify proper placement of the guide needle and / or catheter in the blood vessel, clinicians typically confirm the presence of blood "backflow" in the reflux chamber of the catheter system. Once guide needle placement is confirmed, the clinician can remove the guide needle, leaving the catheter in place for future fluid infusions.

[0006] The subject matter claimed herein is not limited to embodiments that address any shortcomings or operate only in environments such as those described above. Rather, this background is provided merely to illustrate an example technical field in which some of the implementations described herein can be practiced. Summary of the Invention

[0007] This disclosure generally relates to a blood-drawing assembly and related apparatus and methods. In some embodiments, the blood-drawing assembly may include a needle adapter, which may include a body. In some embodiments, the body may include a distal end and a proximal end. In some embodiments, the needle adapter may include a needle extending through the body. In some embodiments, the needle may include a distal end and a proximal end. In some embodiments, the distal end may extend distal to the distal end of the body. In some embodiments, the proximal end may extend proximal to the proximal end of the body.

[0008] In some embodiments, the needle adapter may include a sheath coupled to the body and extending at the proximal end. In some embodiments, the needle adapter may include a hydrophobic venting element that surrounds the body. In some embodiments, the needle adapter may include a diaphragm coupled to the distal end of the body.

[0009] In some embodiments, the blood-drawing assembly may include a Y-shaped adapter, which may include a first proximal port, a second proximal port, and a distal port. In some embodiments, a needle adapter may be coupled to the first proximal port. In some embodiments, a diaphragm may be aligned with the second proximal port. In some embodiments, an air ventilation path may extend proximally along the outer edge of the diaphragm, through a hydrophobic ventilation element, between the outer surface of the body and the inner surface of the first proximal port, and extend out of the first proximal port.

[0010] In some embodiments, the needle may include a notch. In some embodiments, the body may include a notch aligned with the notch of the needle. In some embodiments, a hydrophobic ventilation element may contact the outer edge of the notch in the body. In some embodiments, a blood flow path extends through the needle and through the notch in the body to reach the hydrophobic ventilation element.

[0011] In some embodiments, the body may include a collar disposed between a distal end and a proximal end of the body. In some embodiments, the collar may include threads. In some embodiments, an air venting path may extend between an inner surface of the collar and an outer surface of a first proximal port. In some embodiments, the blood draw assembly may include an extension tube integral with the distal port. In some embodiments, the blood draw assembly may include a catheter adapter and a catheter extending distally from the catheter adapter. In some embodiments, the distal end of the extension tube may be integrated within the catheter adapter. In some embodiments, the proximal end of the extension tube may be integrated within the distal port.

[0012] In some embodiments, the hydrophobic venting element may contact the proximal end of the diaphragm and a stepped surface in the body. In some embodiments, the body may include gripping features configured to pull the diaphragm. In some embodiments, the body may include a collar disposed between the distal end and the proximal end of the body. In some embodiments, the outer diameter of the hydrophobic venting element may be larger than the outer diameter of the diaphragm.

[0013] In some embodiments, the blood-drawing assembly may include a guidewire extending through a needle. In some embodiments, the distal end of the guidewire may include a groove spaced apart from the distal end of the guidewire. In some embodiments, the guidewire may be configured to rotate.

[0014] In some embodiments, a hydrophobic venting element may be disposed within the wall of the body and in fluid communication with a notch. In some embodiments, a diaphragm may be fixed to the distal end of the body. In some embodiments, the diaphragm may be fixed to the distal end of the body via an adhesive. In some embodiments, the diaphragm may be proximal to the second proximal port. In some embodiments, the proximal end of the diaphragm is flush with the proximal end of the first proximal port.

[0015] It should be understood that the foregoing general description and the following detailed description are illustrative and exemplary, and not intended to limit the claimed invention. It should be understood that the various embodiments are not limited to the arrangements and means shown in the accompanying drawings. It should also be understood that embodiments may be combined, or other embodiments may be utilized, and structural changes may be made without departing from the scope of the various embodiments of the invention unless stated otherwise. Therefore, the following detailed description should not be construed as restrictive. Attached Figure Description

[0016] Example embodiments will be described and explained with additional features and details using the accompanying drawings, in which:

[0017] Figure 1A This is a three-dimensional view of the upper part of a blood-drawing component in existing technology;

[0018] Figure 1B This is a cross-sectional view of a portion of a blood-drawing component in the prior art;

[0019] Figure 2A This is a top perspective view of an exemplary blood-drawing assembly according to some embodiments, showing an exemplary needle adapter;

[0020] Figure 2B According to some embodiments Figure 2A A three-dimensional view of the upper part of the pin adapter;

[0021] Figure 2C According to some embodiments Figure 2A Exploded view of the pin adapter;

[0022] Figure 2D It is a connection to an exemplary Y-shaped adapter according to some embodiments. Figure 2A A cross-sectional view of the needle adapter shows an exemplary ventilation path;

[0023] Figure 2E According to some embodiments Figure 2A An enlarged cross-sectional view of a portion of the pin adapter;

[0024] Figure 2F It is connected to the Y-shaped adapter according to some embodiments. Figure 2A A cross-sectional view of the needle adapter illustrates an exemplary blood flow path;

[0025] Figure 2G According to some embodiments Figure 2A An enlarged cross-sectional view of a portion of the pin adapter;

[0026] Figure 3A According to some embodiments Figure 2A Upper perspective view of the needle adapter and exemplary guidewire;

[0027] Figure 3B This is an upper perspective view of an exemplary distal end of a guidewire according to some embodiments;

[0028] Figure 4A This is a top perspective view of a blood-drawing assembly according to some embodiments, illustrating another exemplary adapter;

[0029] Figure 4B It is connected to the Y-shaped adapter according to some embodiments. Figure 4A A three-dimensional view of the upper part of the pin adapter;

[0030] Figure 4C According to some embodiments Figure 4A A three-dimensional view of the upper part of the pin adapter;

[0031] Figure 4D According to some embodiments Figure 2A Exploded view of the pin adapter;

[0032] Figure 4E It is connected to the Y-shaped adapter according to some embodiments. Figure 4A A cross-sectional view of the pin adapter;

[0033] Figure 4F It is removed from the Y-shaped adapter according to some embodiments. Figure 4A A three-dimensional view of the upper part of the pin adapter;

[0034] Figure 5A This is a top perspective view of a blood-drawing assembly according to some embodiments, showing another exemplary needle adapter;

[0035] Figure 5B According to some embodiments Figure 5A A three-dimensional view of the upper part of the pin adapter;

[0036] Figure 5C It is removed from the blood-drawing assembly according to some embodiments. Figure 5A A three-dimensional view of the upper part of the pin adapter;

[0037] Figure 5D It is removed from the exemplary Straumann adapter according to some embodiments. Figure 5A A cross-sectional view of the pin adapter; and

[0038] Figure 5E It is a connection to a Cheryl adapter according to some embodiments. Figure 5A Cross-sectional view of the pin adapter. Specific Implementation

[0039] Now refer to Figure 1A-1BThe diagram illustrates a prior art blood-drawing assembly 10. This assembly includes a prior art needle adapter 12, which is prone to blood accumulation after blood is drawn through it. The blood stains are difficult to wash off and make the needle adapter 12 susceptible to microbial growth. Blood stains appear in several locations, including in the space 15 between the cannula 14 and the septum 16, at bends or angles 18 on the inner surface of the needle adapter 12, and at stepped portions 20 on the inner surface near the extension tube 22. The needle adapter 12 also includes a dead zone 24 due to back pressure, and venous confirmation or return blood is often unclear due to back pressure. Furthermore, the needle adapter 12 facilitates the mixing of pre-filled fluid and pure blood.

[0040] Now for reference Figure 2A This illustration shows a blood-drawing assembly 26 according to some embodiments. In some embodiments, the blood-drawing assembly 26 may include a catheter assembly that may include a catheter adapter 28 and a catheter 30 extending distally from the catheter adapter 28. In some embodiments, a guide needle 31 coupled to a needle hub may extend through the catheter 30 and may be removed after the catheter 30 has been inserted into a vascular system and before blood draw or collection. In some embodiments, the catheter 30 may include a peripheral intravenous catheter, a central catheter, or a peripherally inserted midline catheter. In some embodiments, the catheter assembly may include or correspond to any suitable catheter assembly, such as the BD NEXIVA available from Becton Dickinson & Company in Franklin Lakes, New Jersey. TM Closed IV catheter system or BD SAF-T-INTIMA TM Closed IV catheter system or other suitable catheter assembly.

[0041] In some embodiments, the catheter adapter 28 may include a distal end 32, a proximal end 34, and a lumen extending between the distal end 32 and the proximal end 34. In some embodiments, the catheter adapter 28 may include a side port 36 disposed between the distal end 32 and the proximal end 34.

[0042] In some embodiments, the blood collection assembly 26 may include a needle adapter 38 that can be coupled to a Y-adapter 40 of the blood collection assembly 26. In some embodiments, the needle adapter 38 may be pre-attached to the Y-adapter 40. In some embodiments, the Y-adapter 40 may include a distal port 42, a first proximal port 44, and a second proximal port 46. In some embodiments, the Y-adapter may be replaced by an adapter that includes more ports than the distal port 42, the first proximal port 44, and the second proximal port 46.

[0043] In some embodiments, the blood-drawing assembly 26 may include an extension tube 39, which may include a distal end integral with a side port 36 and a proximal end integral with a distal port 42. In some embodiments, a clamp 48 may be disposed on the extension tube 39 and movable from a released position to a clamped position to prevent blood from flowing through the extension tube 39. In some embodiments, a needle adapter 38 may be coupled to a first proximal port 44 and a vent cap 50 configured to vent air from the blood-drawing assembly 26.

[0044] Now refer to Figure 2B-2C In some embodiments, the needle adapter 38 may include a body 52. ​​In some embodiments, the body 52 may include a distal end 54 and a proximal end 56. In some embodiments, the needle adapter 38 may include a needle 58 extending through the body 52. ​​In some embodiments, the needle 58 may include a distal end 60 and a proximal end 62. In some embodiments, the distal end 60 may extend distal to the distal end 52 of the body 54. In some embodiments, the proximal end 62 may extend proximal to the proximal end 56 of the body 52.

[0045] In some embodiments, the needle adapter 38 may include a sheath 64 coupled to the body 52 and extending over a proximal end 62 (which may be sharp). In some embodiments, the sheath 64 may be rubber and / or elastomer. In some embodiments, in response to coupling the blood collection device to the needle adapter 38, the proximal end 62 may pierce the sheath 64, the sheath 64 may compress toward the body 52, and the needle 58 may be inserted into the blood collection device. In some embodiments, the blood collection device may include a blood collection tube or a BD VACUTAINNER blood collection tube (available from Becton Dickinson & Company, Franklin Lakes, New Jersey).

[0046] In some embodiments, the needle adapter 38 may include a hydrophobic venting element 66, which in some embodiments may include a ring and may surround the body 52. ​​In some embodiments, the hydrophobic venting element 66 may include a membrane. In some embodiments, the hydrophobic venting element 66 may be configured to allow air to pass through. In some embodiments, the hydrophobic venting element 66 may absorb fluid and / or prevent fluid from passing through the hydrophobic venting element 66.

[0047] In some embodiments, the needle adapter 38 may include a diaphragm 68 that can be coupled to the distal end 54 of the body 52. ​​In some embodiments, the body 52 may include a gripping feature 70 configured to pull the diaphragm 68 in response to removal of the needle adapter 38 from the Y-adapter 40. In some embodiments, the gripping feature 70 may include a groove or an annular groove. In some embodiments, the diaphragm 68 may include a protrusion that may fit within the gripping feature 70. In some embodiments, the distal end 60 may be disposed distal to the diaphragm 68.

[0048] In some embodiments, the body 52 may include a collar 72 disposed between a distal end 54 and a proximal end 56 of the body 52. ​​In some embodiments, the outer surface of the body 52 may include radial grooves 74 to provide air passages.

[0049] Now refer to Figure 2D-2E In some embodiments, the pin adapter 38 may be coupled to the first proximal port 44, for example, as shown below. Figure 2D As shown. In some embodiments, the diaphragm 68 may be aligned with the second proximal port 46. In some embodiments, the distal end of the diaphragm 68 may include a larger diameter than the proximal end of the diaphragm 68. In some embodiments, the distal end of the diaphragm 68 may form a seal with the inner surface of the Y-adapter 40, thereby preventing pre-charge fluid 75 flowing proximal through the second proximal port 46 from flowing distally beyond the diaphragm 68. In some embodiments, the proximal end of the diaphragm 68 may be spaced apart from the inner surface of the Y-adapter 40 to form a gap 76 through which pre-charge fluid 75 flowing proximal through the second proximal port 46 may flow until reaching the hydrophobic vent element 66. In some embodiments, the gap 76 may be annular.

[0050] In some embodiments, the air venting path may extend proximally along the outer edge of the diaphragm through the gap 76, through the hydrophobic venting element 66, into the space 78 between the outer surface of the body 52 and the inner surface of the first proximal port 44, through the radial groove 74, and out of the first proximal port 44. In some embodiments, the space 78 may be annular. In some embodiments, air may flow through the venting path in response to the pre-filled fluid 75 flowing proximally through the second proximal port 46.

[0051] In some embodiments, when the needle adapter 38 is coupled to the first proximal port 44, the distal end 60 of the needle 58 may be disposed within the metal bushing 79. In some embodiments, the diaphragm 68 may provide a seal at the location where the diaphragm 68 contacts the metal bushing 79. In some embodiments, the seal may be annular, thereby preventing fluid from moving to the distal side of the distal end of the diaphragm 68.

[0052] like Figure 2E As shown, a portion 80 of the hydrophobic vent element 66 can absorb the pre-charge fluid 75 and prevent the pre-charge fluid 75 from passing through the hydrophobic vent element 66. In some embodiments, this portion 80 may be larger or smaller than... Figure 2E The portion 80 shown. In some embodiments, the inner surface of the collar 72 may include threads 81, and in some embodiments, the venting path may extend between the inner surface of the collar 72 and the outer surface of the first proximal port 44.

[0053] Now refer to Figure 2F-2G In some embodiments, the needle 58 may include a notch 82. In some embodiments, the body 52 may include a notch 84 aligned with the notch 82 of the needle 58. In some embodiments, the hydrophobic venting element 66 may contact the outer edge of the notch 82 of the body 52 and seal the notch 82. In some embodiments, a blood flow path extends through the needle 58 and through the notch 82 in the body 52 to reach the hydrophobic venting element 66. In some embodiments, a portion 86 of the hydrophobic venting element 66 may absorb blood 88. In some embodiments, the portion 86 may be larger or smaller than [the specified size]. Figure 2G Part 86 is shown in the diagram. In some embodiments, blood 88 may be released in response to catheter 30 being inserted into the patient's blood vessel and / or clip 48 being released (e.g., see [reference]). Figure 2A It flows proximally through the blood flow pathway.

[0054] In some embodiments, the hydrophobic vent element 66 may contact the proximal end of the diaphragm 68 and / or the stepped surface 90 in the body 52. ​​In some embodiments, the hydrophobic vent element 66 may thus be secured between the proximal end of the diaphragm 68 and the stepped surface 90 (which may be annular). In some embodiments, the outer diameter of the hydrophobic vent element 66 may be larger than the outer diameter of the diaphragm 68, such that the gap 76 terminates. In some embodiments, the hydrophobic vent element 66 may contact the inner surface of the Y-shaped adapter 40.

[0055] Now refer to Figures 3A-3B In some embodiments, the blood-drawing assembly 26 may include a guidewire 92 that extends through the needle 58. In some embodiments, the guidewire 92 may pass through the needle 58 and the blood-drawing assembly 26, which facilitates blood aspiration through an occluded catheter. In some embodiments, the distal end of the guidewire 92 may include a groove 94 spaced apart from the distal end 96 of the guidewire 92. In some embodiments, the guidewire 92 may be configured to rotate, which may facilitate removal of the fibrin sheath inside and / or near the distal end of the catheter 30 (e.g., see...). Figure 2AIn some embodiments, the groove 94 can facilitate pulling and / or rotating the fibrin sheath. In some embodiments, the groove 94 can be provided in a planar cut at the distal end of the guidewire 92.

[0056] Now refer to Figure 4A The image illustrates a blood-drawing assembly 100 and a needle adapter 102 according to some embodiments. In some embodiments, the blood-drawing assembly 100 and the needle adapter 102 may be respectively coupled to one or more components and / or operations. Figures 2A-3B The blood-drawing component 26 and the needle adapter 38 are similar or identical. In some embodiments, the needle adapter 102 may be pre-attached to the Y-shaped adapter 40.

[0057] Now refer to Figure 4B-4E In some embodiments, a hydrophobic venting element 66 may be disposed within the wall 104 of the body 52 and in fluid communication with the notch 82. In some embodiments, a diaphragm 68 may be secured to the distal end 54 of the body 52. ​​In some embodiments, the diaphragm 68 may be secured to the distal end 54 of the body 52 by an adhesive or other suitable attachment method. In some embodiments, the diaphragm 68 may be proximal to the second proximal port 46.

[0058] In some embodiments, the blood flow path may extend proximally through the needle 58. In some embodiments, the blood flow path may also extend through a notch 82 in the needle 58 and into a channel 106 in the body 52 to reach the hydrophobic ventilation element 66. In some embodiments, the channel 106 may extend from the needle 58 through the wall 104 of the body 52. ​​In some embodiments, the channel 106 may provide enhanced reflux for venous confirmation.

[0059] In some embodiments, air may exit the hydrophobic ventilation element 66 in response to proximal blood flow through the blood flow path. In some embodiments, the hydrophobic ventilation element 66 may be configured to allow air, rather than a liquid (e.g., blood), to pass through. In some embodiments, the ventilation cap 50 may be coupled to a second proximal port 46. In some embodiments, the blood flow path may also extend into the second proximal port 46, and air may exit the ventilation cap 50 proximally. In some embodiments, blood may flow in response to catheter 30 being inserted into the patient's vascular system and / or the release of the clamp 48 (e.g., see...). Figure 4A It flows proximally through the blood flow pathway.

[0060] In some embodiments, in response to coupling the blood collection device to the needle adapter 102, the proximal end 62 can pierce the sheath 64, the sheath 64 can compress toward the body 52, and the needle 58 can be inserted into the blood collection device. In some embodiments, the blood collection device may include a blood collection tube or a BD VACUTAINNER blood collection tube (available from Becton Dickinson & Company, Franklin Lakes, New Jersey).

[0061] In some embodiments, the distal end 60 may be sharp, which facilitates needle 58 insertion through the diaphragm 68. In some embodiments, the distal end 60 may be blunt. In some embodiments, the distal end 60 of the needle 58 may be disposed within a metal bushing 79, which prevents damage to the inner surface of the Y-adapter. In some embodiments, the Y-adapter may include a low dead zone or zero dead zone 108, which facilitates rinsing and removal of bloodstains. In some embodiments, the low dead zone or zero dead zone 108 may extend between the distal end of the diaphragm 68 and the metal bushing 79.

[0062] Now refer to Figure 4F In some embodiments, the proximal end of the diaphragm 68 may be flush with the proximal end of the first proximal port 46, which facilitates the cleaning and disinfection of the diaphragm 68. Figure 4F The diagram illustrates the removal of the needle adapter 102 from the Y-adapter 40 after blood has been drawn from the patient. In some embodiments, after the needle adapter 102 is removed from the Y-adapter 40, a wing-shaped needle assembly can be inserted through the diaphragm 68. In some embodiments, the ventilation cap 50 can be removed and replaced with a needleless Luer connector.

[0063] Now for reference Figure 5A The image illustrates a blood-drawing assembly 110 and a needle adapter 112 according to some embodiments. In some embodiments, the blood-drawing assembly 110 may be compatible with one or more components and / or operations. Figures 2A-3B Blood drawing components 26 and / or Figures 4A-4F The blood-drawing component 100 is similar to or the same as the blood-drawing component 100. In some embodiments, the needle adapter 112 may be similar to, in one or more components and / or operation, the blood-drawing component 100. Figures 2A-3B Pin adapter 38 and / or Figures 4A-4F The pin adapter 102 is similar to or the same as the one used.

[0064] In some embodiments, the needle adapter 112 may be pre-attached to the Y-type adapter 40. In some embodiments, the body 52 may include a cylindrical portion 114 extending to the distal end 60. In some embodiments, the cylindrical portion 114 may serve as a needle protector to prevent accidental punctures by the distal end 60.

[0065] In some embodiments, the body 52 may be coupled to a straight Luer adapter 118 (which may include a diaphragm 68). In some embodiments, an extension tube 39 may be integrated within the straight Luer adapter 118. In some embodiments, the straight Luer adapter 118 may be configured to insert into a cylindrical portion 114.

[0066] In some embodiments, the catheter assembly, which may include catheter 30 and catheter adapter 28, may be closed and may not require infusion. In some embodiments, extension tube 39 may be shorter, for example, between 1 inch and 4 inches.

[0067] All examples and conditional language described herein are for educational purposes, to help the reader understand the invention and the concepts contributed by the inventors to advance the art, and should be construed as not being limited to such specifically described examples and conditions. Although embodiments of the invention have been described in detail, it should be understood that various changes, substitutions, and modifications can be made therein without departing from the spirit and scope of the invention.

Claims

1. A pin adapter, characterized in that, The needle adapter is configured to connect to a blood collection device and includes: The main body includes a distal end and a proximal end; A needle extending through the body and including a distal end and a proximal end, wherein the distal end extends to the distal side of the distal end of the body, and wherein the proximal end extends to the proximal side of the proximal end of the body, wherein the needle includes a notch; A sheath, which is attached to the body and extends over the proximal end; Hydrophobic venting element surrounding the main body; and A diaphragm, the diaphragm being connected to the distal end of the body; The body includes a notch aligned with the notch of the needle, wherein the hydrophobic ventilation element contacts the outer edge of the notch of the body, thereby allowing the blood flow path to extend through the notch of the needle and the notch of the body to reach the hydrophobic ventilation element.

2. The pin adapter according to claim 1, characterized in that, The hydrophobic venting element contacts the proximal end of the diaphragm and the stepped surface in the body.

3. The pin adapter according to claim 1, characterized in that, The main body includes gripping features configured to pull the diaphragm.

4. The pin adapter according to claim 1, characterized in that, The body also includes a collar disposed between the distal end and the proximal end of the body.

5. The pin adapter according to claim 4, characterized in that, The collar includes threads.

6. The pin adapter according to claim 1, characterized in that, The outer diameter of the hydrophobic venting element is larger than the outer diameter of the diaphragm.

7. The pin adapter according to claim 1, characterized in that, The needle adapter also includes a guide wire extending through the needle.

8. The pin adapter according to claim 7, characterized in that, The distal end of the guidewire includes a groove spaced apart from the distal end of the guidewire, wherein the guidewire is configured to rotate.

9. A blood-drawing assembly, characterized in that, The blood-drawing assembly includes: The pin adapter according to claim 1; A Y-shaped adapter includes a first proximal port, a second proximal port, and a distal port, wherein the needle adapter is coupled to the first proximal port, wherein the diaphragm is aligned with the second proximal port, and wherein an air venting path extends proximally along the outer edge of the diaphragm, through the hydrophobic venting element, between the outer surface of the body and the inner surface of the first proximal port, and extends out of the first proximal port.

10. The blood-drawing assembly according to claim 9, characterized in that, The blood flow path extends through the needle and reaches the hydrophobic ventilation element through the notch in the body.

11. The blood-drawing assembly according to claim 9, characterized in that, The body also includes a collar disposed between the distal end and the proximal end of the body, wherein the air venting path extends between the inner surface of the collar and the outer surface of the first proximal port.

12. The blood-drawing assembly according to claim 9, characterized in that, The blood-drawing assembly also includes an extension tube integrated with the distal port.

13. The blood-drawing assembly according to claim 12, characterized in that, The blood collection assembly also includes a catheter adapter and a catheter extending distally from the catheter adapter, wherein the distal end of the extension tube is integrated within the catheter adapter, and the proximal end of the extension tube is integrated within the distal port.

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