Providing the ability of an anti-disconnection catheter adapter and needle hub

Abstract

A catheter system can include a catheter adapter and a wing extending outwardly from the catheter adapter. The wing can include a groove or slot. The catheter system can include a needle hub and a paddle extending outwardly from the needle hub. The paddle can include an extension that is disposed within the groove or slot to reduce axial movement between the catheter adapter and the needle hub, which can be advantageous during insertion of the catheter system into a patient. The extension can be removed from the groove or slot to allow axial movement between the catheter adapter and the needle hub, for example, during removal of a needle hub from the needle adapter. The paddle and / or the wing can include a shape that inhibits axial movement between the catheter adapter and the needle hub, which can also be advantageous during insertion of the catheter system.

Description

TECHNICAL FIELD

[0001] The present disclosure relates generally to the field of medical devices. In particular, the present disclosure relates to medical infusion devices, such as intravenous catheters. BACKGROUND

[0002] Intravenous catheters are commonly used for various infusion therapies. For example, intravenous catheters can be used to infuse liquids, 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 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 an introducer needle having a sharp distal tip. The sharp distal end can be used to pierce the skin and vasculature of a patient. After the needle pierces the vasculature, the intravenous catheter can be inserted into the vasculature. The needle and intravenous catheter are typically inserted into the vasculature of a patient at a shallow angle, with the bevel of the needle facing upward and away from the skin of the patient. Once placement of the needle within the vasculature has been confirmed, the user can temporarily occlude flow in the vasculature and withdraw the needle, leaving the intravenous catheter in place for future blood withdrawal and / or infusion.

[0004] To verify proper placement of the introducer needle and / or intravenous catheter in the vasculature, the user typically confirms the presence of blood flashback, which can be visible to the user. As an example, 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 move proximally between the outer surface of the introducer needle and the inner surface of the PIVC. Thus, with the PIVC at least partially transparent, the user can cause a small amount of blood "flashback" to be visible, confirming placement of the PIVC within the vasculature. The presence of a vascular access indicator, such as flashback, can facilitate successful placement of the PIVC.

[0005] 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 a representative example for an example technology area where some implementations described herein can be practiced. SUMMARY

[0006] In some embodiments, a catheter system can include a catheter adapter, which can include a proximal end, a distal end, and a lumen extending through the proximal end and the distal end. In some embodiments, a wing can extend outwardly from the catheter adapter. In some embodiments, the wing can include a groove or slot. In some embodiments, a catheter can extend distally from the catheter adapter. In some embodiments, the catheter system can include a needle hub.

[0007] In some embodiments, a paddle can extend outwardly from the needle hub. In some embodiments, the paddle can include an extension, which can include a protrusion. In some embodiments, the extension can be disposed within the groove or slot to reduce axial movement between the catheter adapter and the needle hub. In some embodiments, the catheter system can include a cannula, which can extend through the catheter adapter and the catheter. In some embodiments, the cannula can include a proximal end and a distal end. In some embodiments, the proximal end of the cannula can be fixed within the needle hub.

[0008] In some embodiments, the catheter system can include one or more features configured to reduce axial movement between the catheter adapter and the needle hub, which would be advantageous during insertion of the catheter system into a patient. For example, in some embodiments, the bottom of the wing can be smooth. In some embodiments, the extension can include a spherical portion, and the wing can include a socket to accommodate the spherical portion. In some embodiments, the groove or slot can be substantially perpendicular to a longitudinal axis of the catheter system, and the extension can be configured to move laterally within the groove or slot rather than axially.

[0009] In some embodiments, the extension can include a rib. In some embodiments, the wing can include a groove. In some embodiments, the groove can be elongated to substantially match the shape of the rib. In some embodiments, the extension is part of a herringbone pattern surface, and / or the wing can include a corresponding herringbone pattern with a groove.

[0010] For example, in some embodiments, the extension can be removable from the groove or slot to allow axial movement between the catheter adapter and the needle hub during, for example, removal of the needle hub from the catheter adapter. In some embodiments, the extension can be removable from the groove or slot in response to a force applied by a user. In some embodiments, the wing can be constructed of a flexible material such that the wing can be pulled away from the paddle to remove the extension from the groove or slot.

[0011] In some embodiments, the shape of the paddle portion reduces distal movement of the conduit adapter relative to the needle hub. In some embodiments, the shape may include a rough texture. In some embodiments, the proximal portion of the paddle portion may include a rough texture, and / or the distal portion of the paddle portion may be smooth. In some embodiments, a portion of the paddle portion may be located below the wing. In some embodiments, the shape may include an arm configured to move independently of the portion of the paddle portion located below the wing. In some embodiments, in response to the arm being in a first position, the arm may contact the distal end of the wing and reduce distal movement of the wing. In some embodiments, in response to the arm being in a second position, the arm may be positioned below the wing, and the wing may be configured to move distally.

[0012] In some embodiments, the shape may include a raised distal edge configured to reduce distal movement of the wing. In some embodiments, the propeller portion may include a raised proximal end. In some embodiments, the edge of the propeller portion between the raised distal edge and the raised proximal edge may not be raised.

[0013] In some embodiments, the wing may include a recess, and the shape may include a cantilever element movable between a first position within the recess and a second position outside the recess. In some embodiments, the shape may include bends forming upper and lower portions of the propeller, wherein the wing is disposed between the upper and lower portions of the propeller, wherein, in response to pinching the upper and lower portions together, the movement of the wing relative to the propeller is reduced.

[0014] In some embodiments, the wing may be a first wing. In some embodiments, the catheter system may include a second wing that extends outward from the catheter adapter. In some embodiments, the second wing may be movable between an upward position and a downward position. In some embodiments, the second wing may be smaller than the first wing. In some embodiments, the second wing may include a protrusion.

[0015] In some embodiments, the propeller portion may include a groove. In some embodiments, a protrusion may be disposed in the groove in response to the second wing portion being disposed in a downward position. In some embodiments, the protrusion may not be disposed in the groove in response to the second wing portion being disposed in an upward position.

[0016] In some embodiments, the distal end of the paddle portion may include a concave curved surface. In some embodiments, the concave curved surface may face distally. In some embodiments, one side of the catheter adapter may include another concave curved surface. In some embodiments, the concave curved surface and the other concave curved surface may be configured to be gripped in an end-hold manner. In some embodiments, the catheter adapter may include a protrusion configured to contact the paddle portion and prevent the needle hub from rotating relative to the catheter adapter. In some embodiments, the paddle portion may include a groove, and the catheter adapter may include ribs that can slide within the groove, which may facilitate alignment between the catheter adapter and the needle hub.

[0017] It should be understood that the foregoing summary description and the following detailed description are illustrative and not intended to limit the 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 these embodiments can be combined, other embodiments can be utilized, and structural changes can be made without departing from the scope of the various embodiments of the invention, unless required to do so. Therefore, the following detailed description should not be considered limiting. Attached Figure Description

[0018] With the use of the accompanying drawings, exemplary embodiments will be described and illustrated with additional features and details, in which:

[0019] FIG. 1A This is a top perspective view of an exemplary catheter system, showing a catheter system in an insertion configuration for insertion into a patient, according to some embodiments;

[0020] FIG. 1B This is a top perspective view of a catheter system, showing an exemplary needle hub removed from an exemplary catheter adapter according to some embodiments;

[0021] FIG. 1C This is a lower perspective view of a catheter system according to some embodiments;

[0022] FIG. 2A This is a top perspective view of a catheter system, showing an exemplary extension and an exemplary slot according to some embodiments;

[0023] FIG. 2B This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter according to some embodiments;

[0024] FIG. 2C This is a distal view of a catheter system according to some embodiments;

[0025] FIG. 2D This is another distal view of the duct system, showing an exemplary wing that is pulled apart from an exemplary paddle section according to some embodiments;

[0026] FIG. 2E This is a lower perspective view of a catheter system according to some embodiments;

[0027] FIG. 3A This is a top perspective view of a catheter system according to some embodiments;

[0028] FIG. 3B This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter according to some embodiments;

[0029] FIG. 3C This is a lower perspective view of a catheter system according to some embodiments;

[0030] FIG. 3D It is according to some embodiments along FIG. 3A A 3D-3D cross-sectional view of a conduit system;

[0031] FIG. 4A This is a top perspective view of a catheter system according to some embodiments;

[0032] FIG. 4B This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter and exemplary ribs according to some embodiments;

[0033] FIG. 4C This is a lower perspective view of a catheter system according to some embodiments;

[0034] FIG. 4D It is according to some embodiments along FIG. 4A A 4D-4D sectional view of a conduit system;

[0035] FIG. 5A This is a top perspective view of a catheter system according to some embodiments;

[0036] FIG. 5B This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter and an exemplary herringbone patterned surface according to some embodiments;

[0037] FIG. 5C This is a lower perspective view of a catheter system according to some embodiments;

[0038] FIG. 5D It is according to some embodiments along FIG. 5A A 5D-5D sectional view of the conduit system;

[0039] FIG. 5E This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter and another illustrative herringbone pattern surface according to some embodiments;

[0040] FIG. 6 It is according to some embodiments along FIG. 5A Alternative cross-sectional view of the 5D-5D conduit system;

[0041] FIG. 7 This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter according to some embodiments and an illustrative rough texture;

[0042] FIG. 8A This is a top view of a catheter system, showing an exemplary arm according to some embodiments;

[0043] FIG. 8B This is an upper perspective view of an exemplary needle holder according to some embodiments, showing the arm;

[0044] FIG. 9A This is a top perspective view of the catheter system, showing an exemplary elevation of the distal edge and an exemplary elevation of the proximal edge according to some embodiments;

[0045] FIG. 9B This is a perspective view of the upper part of the needle hub, showing an exemplary raised distal edge and an exemplary raised proximal edge according to some embodiments;

[0046] FIG. 10A This is a proximal view of a catheter system, showing a wing having an illustrative upper and lower portion according to some embodiments;

[0047] FIG. 10B This is a side view of a catheter system according to some embodiments;

[0048] FIG. 11A This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter and exemplary cantilever element according to some embodiments;

[0049] FIG. 11B This is an enlarged cross-sectional view of a cantilever element arranged in an exemplary recess according to some embodiments;

[0050] FIG. 12A This is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter and the exemplary slot according to some embodiments;

[0051] FIG. 12B This is a top perspective view of the catheter system, showing an exemplary protrusion arranged at the end of the slot according to some embodiments;

[0052] FIG. 13 This is a cross-sectional view of a catheter system according to some embodiments, showing an illustrative protrusion;

[0053] FIG. 14AThis is a top perspective view of the catheter system, showing the needle hub removed from the catheter adapter and exemplary arm according to some embodiments;

[0054] FIG. 14B This is a cross-sectional view of a catheter system according to some embodiments, showing the arm;

[0055] FIG. 15A This is a top perspective view of the catheter system, showing a needle hub removed from the catheter adapter according to some embodiments, and an exemplary protrusion that engages with the needle hub.

[0056] FIG. 15B This is a cross-sectional view of a catheter system, showing a protrusion that engages with a needle hub according to some embodiments;

[0057] FIG. 16 This is a cross-sectional view of a catheter system, showing an illustrative removable clip according to some embodiments;

[0058] FIG. 17 This is a top perspective view of the catheter system, showing the raised proximal portion of the wing according to some embodiments;

[0059] FIG. 18A This is a top perspective view of the duct system, showing the propeller section arranged above the wing according to some embodiments;

[0060] FIG. 18B This is a distal view of a catheter system according to some embodiments;

[0061] FIG. 19 This is a distal view of the catheter system, showing an exemplary protrusion of the paddle section according to some embodiments;

[0062] FIG. 20 This is a side view of a catheter assembly according to some embodiments;

[0063] FIG. 21A This is a top perspective view of a conduit system, showing an exemplary groove constructed according to some embodiments for placing a thumb;

[0064] FIG. 21B This is a distal view of a catheter system according to some embodiments, showing a groove;

[0065] FIG. 22 This is a top perspective view of the catheter system, showing an exemplary ridge according to some embodiments;

[0066] FIG. 23A This is a top perspective view of a conduit system according to some embodiments, showing an exemplary upper part of the paddle section;

[0067] FIG. 23BThis is a distal view of the duct system, showing the upper and illustrative lower portions of the paddle section according to some embodiments;

[0068] FIG. 24A This is a top perspective view of an exemplary catheter adapter according to some embodiments, showing an exemplary other wing;

[0069] FIG. 24B This is an upper perspective view of the duct system, showing another exemplary wing according to some embodiments, which is arranged in an exemplary groove of the paddle portion and in an exemplary downward position;

[0070] FIG. 24C This is a top perspective view of the catheter system, showing another wing in an illustrative upward position according to some embodiments;

[0071] FIG. 24D It is the proximal end of a catheter system according to some embodiments;

[0072] FIG. 24E This is a side view of a catheter system, showing an exemplary stop feature according to some embodiments;

[0073] FIG. 25A This is a top view of the conduit system, showing multiple concave curved surfaces according to some embodiments;

[0074] FIG. 25B This is a top perspective view of a catheter system according to some embodiments, showing a concave curved surface;

[0075] FIG. 25C This is a proximal view of a catheter system according to some embodiments;

[0076] FIG. 25D This is a top perspective view of a catheter adapter according to some embodiments, showing the stop feature;

[0077] FIG. 25E This is a top view of an exemplary catheter adapter according to some embodiments;

[0078] FIG. 25F This is a top view of the conduit system, showing a concave curved surface according to some embodiments;

[0079] FIG. 26A This is a top view of an existing conduit system;

[0080] FIG. 26B This is a top view of the catheter system, showing the elongated portion of the needle hub inserted into the catheter adapter according to some embodiments;

[0081] FIG. 26C This is a top view of a catheter system, showing an exemplary press-fit gasket according to some embodiments;

[0082] FIG. 26D This is an upper perspective view of an exemplary distal end of a catheter system according to some embodiments, showing an exemplary solid cannula;

[0083] FIG. 26E This is a top perspective view of the cannula according to some embodiments;

[0084] FIG. 27A This is a top perspective view of a catheter adapter, showing an exemplary rib according to some embodiments;

[0085] FIG. 27B This is a perspective view of the upper part of the needle holder, showing an exemplary groove constructed as a receiving rib according to some embodiments; and

[0086] FIG. 27C This is a cross-sectional view of a conduit system, showing ribs arranged in a groove according to some embodiments. Detailed Implementation

[0087] Now for reference FIG. 1A-1B In some embodiments, the catheter system 10 may include a needle hub 12 and a paddle portion 14. In some embodiments, the needle hub 12 and the paddle portion 14 may be a single component and integrally formed. In some embodiments, the needle hub 12 and the paddle portion 14 may be integrally formed as a single unit. In some embodiments, the paddle portion 14 may extend outward from the needle hub 12.

[0088] In some embodiments, the proximal end of the cannula 16 may be secured within the needle hub 12. In some embodiments, the cannula 16 may include a notch (in...) FIG. 1A-1C (Not shown in the image), the notch can be arranged toward the distal end of the cannula 16, which can provide an initial flashback to indicate that the catheter 18 of the catheter system 10 has been correctly placed within the patient's vascular system. In some embodiments, the cannula 16 may include a guide needle with a sharp distal end 20. In some embodiments, the bevel of the sharp distal end 20 may face the top of the catheter system 10. In some embodiments, the flashback may be visible in the needle hub 12.

[0089] In some embodiments, the needle hub 12 may be removably coupled to the catheter adapter 22 of the catheter system 10. For example... FIG. 1AAs shown, in some embodiments, one or more wings 24 may extend outward relative to the catheter adapter 22. In some embodiments, wings 24a may overlap with paddles 14, which may help the user to hold wings 24a and paddles 14 together during insertion of the catheter system 10 into the patient's vascular system. In some embodiments, it may be important for the user to grip the paddles 14 during insertion of the catheter system 10 so that the force applied by the user for insertion is directly transmitted to the cannula 16. In some embodiments, paddles 14 may include a ridge 15 that may abut wings 24a. In some embodiments, the catheter system 10 may not include wings 24a and / or wings 24b.

[0090] In some embodiments, if the user fails to successfully penetrate the vascular system with the cannula 16, the user may slightly withdraw the catheter system 10 to change the path of the cannula 16 in order to make another attempt to penetrate the vascular system. In some embodiments, during the withdrawal of the catheter system 10, if the user is able to pinch the wing 24a and the paddle 14 together between the user's thumb and other fingers, this can prevent the catheter adapter 22 from separating from the needle hub 12 in response to friction between the catheter system 10 and the patient's physiological tissues during retraction.

[0091] Therefore, in some embodiments, the overlap between the paddle portion 14 and the wing portion 24a can facilitate a user gripping the catheter system 10, which can reduce premature separation of the needle hub 12 and the catheter adapter 22. Premature separation of the needle hub 12 and the catheter adapter 22 can cause the distal end 26 of the catheter 18 to move a distance proximal to the angle of the insertion cannula 16, which may cause the distal end 26 of the catheter 18 to become lodged in the user's physiological tissue during subsequent insertion. Lodging of the distal end 26 of the catheter 18 in physiological tissue can be painful for the patient and may deform the distal end 26 of the catheter 18, making it difficult or impossible to enter the vascular system.

[0092] In some embodiments, after the catheter 18 has been successfully placed within the vascular system, the cannula 16 can be withdrawn from the catheter 18, and the catheter 18 can be left in place for blood draw, infusion, or other suitable purposes. In some embodiments, to withdraw the cannula 16 from the catheter 18, the needle hub 12 can be separated from the catheter adapter 22, and the needle hub 12 can be removed from the catheter system 10 and / or discarded. In some embodiments, the overlap between the paddle portion 14 and the wing portion 24a can also facilitate the separation of the needle hub 12 and the catheter adapter 22 when the user simply moves his thumb and fingers (of the same hand) that he previously used to pinch the needle hub 12 and the catheter adapter 22 during insertion away from each other. In these embodiments, other fingers (e.g., the index finger) can be moved proximally relative to the thumb.

[0093] In some embodiments, during insertion, the thumb may be positioned on top of the wing 24a and the other fingers may be positioned on bottom of the paddle 14. In some embodiments, the thumb and other fingers may be held in these positions on top of the wing 24 and bottom of the paddle 14, respectively, so as to separate the needle hub 12 and the catheter adapter 22 after insertion is complete, thereby allowing the user to easily use the catheter system 10. FIG. 1B As shown, according to some embodiments, the wing 24a is separate from the propeller 14.

[0094] In some embodiments, the catheter adapter 22 may include a pusher 28. In some embodiments, when the catheter system 10 is in an inserted state, ready for insertion into a patient, the pusher 28 or another feature connected to the catheter adapter 22 may be aligned with one or more features of the paddle portion 14 or markings on the paddle portion 14. This can provide the user with a visual cue or indication that the catheter adapter 22 and the needle hub 12 are in a suitable position for insertion and not disengaged. For example, the distal end of the pusher 28 may be aligned with or flush with the distal end of the spine 15. In some embodiments, the catheter adapter 22 and / or one or more features of the catheter system 10 may be those described in U.S. Patent Application No. 15 / 969,584, filed May 2, 2018, entitled “Intravenous Catheter System and Method,” the entire contents of which are incorporated herein by reference.

[0095] In some embodiments, the catheter adapter 22 may include a distal end 30, a proximal end 32, and an inner lumen extending through the distal end 30 and the proximal end 32. In some embodiments, the catheter 18 may be secured within the distal end 30 of the catheter adapter 22. In some embodiments, after the needle hub 12 has been detached and removed from the catheter adapter 22, a medical device may be engaged to the proximal end 32 of the catheter adapter 22 for infusion and / or blood draw.

[0096] In some embodiments, catheter system 10 may include any suitable catheter adapter 22 and / or needle hub 12. In some embodiments, catheter adapter 22 may include a side port 34 in fluid communication with the lumen of the catheter adapter. In some embodiments, extension tube 36 may be integrated within the side port 34 and may be part of an extension kit. In some embodiments, catheter system 10 may include any suitable cannula 16. In some embodiments, catheter 18 may include a peripheral intravenous catheter (“PIVC”), a midline catheter, a peripherally inserted central catheter (“PICC”), or another suitable catheter.

[0097] Now for reference FIG. 1CIn some embodiments, wing 24a may include a base 38a and / or wing 24b may include a base 38b. In some embodiments, each wing 24 may extend outward from the catheter adapter 22. In some embodiments, each wing 24 may be connected to or separated from each other. In some embodiments, the bases 38a and 38b may form generally flat surfaces. In some embodiments, the base 38a of wing 24a and / or the top of paddle 14 may be smooth, thereby increasing the contact surface between wing 24a and paddle 14. In some embodiments, as the contact surface at the interface between wing 24a and paddle 14 increases, the friction between wing 24a and paddle 14 may increase, which may reduce the likelihood of separation of wing 24a and paddle 14 during insertion and / or withdrawal of catheter system 10 relative to the vasculature system.

[0098] In some embodiments, all or a portion of the wing 24a and / or all or a portion of the paddle 14 may be free of lubricant, thereby increasing friction between the wing 24a and the paddle 14 and reducing the likelihood of separation of the wing 24a and the paddle 14 during insertion of the catheter system 10 into the patient. In some embodiments, the wing 24a and / or the paddle 14 may be constructed of thermoplastic polyurethane (“TPU”) or another suitable material. In some embodiments, the TPU may be free of one or more additives that would otherwise act as lubricants. In some embodiments, the paddle 14 may be more rigid than the wing 24. In some embodiments, the paddle 14 may be constructed of TPU or other suitable materials.

[0099] Now for reference FIG. 2A-2E In some embodiments, the catheter system 10 may include a slot 40 and an extension 42 disposed within the slot 40. In some embodiments, the slot 40 may be elongated. In some embodiments, the slot 40 may extend substantially perpendicular to the longitudinal axis 44 of the catheter system 10, thereby allowing the extension 42 to undergo some lateral movement. In some embodiments, the shape and orientation of the slot 40 may prevent axial movement of the extension 42 (and the wings 24a or paddle 14 to which the extension 42 may be attached). More specifically, the shape and orientation of the slot 40 may prevent the extension 42 from being parallel to the longitudinal axis 44 and / or in a distal or proximal direction. Thus, in some embodiments, the slot 40 and the extension 42 may reduce the likelihood of separation of the wings 24a and the paddle 14 during insertion and / or withdrawal of the catheter system 10 relative to the vascular system.

[0100] In some embodiments, the extension 42 may extend upward from the paddle portion 14, and the wing portion 24a may include a slot 40. In some embodiments, the wing portion 24a may be made of a flexible material such that the wing portion 24a can be pulled or deflected by a user away from the paddle portion 14 to separate the needle hub 12 from the catheter adapter 22 after the catheter system 10 has been inserted into the vascular system. In some embodiments, the extension 42 may extend downward from the wing portion 24a, and the paddle portion 14 may include a slot 40.

[0101] In some embodiments, the slot 40 may include an eyelet or hole that extends through the wing 24a or the paddle 14, such as... FIG. 2A-2B As shown. In some embodiments, slot 40 may include, for example... FIG. 2E The groove shown may not extend through the wing 24a or the propeller 14.

[0102] Now for reference FIG. 3A-3D In some embodiments, the extension 46 may fit snugly within the recess 48. As an example, the recess 48 may include a socket, and the extension 46 may include a spherical portion. In some embodiments, the shape of the recess 48 may correspond to the shape of the extension 46 and / or the diameter of the recess 48 may be approximately equal to the diameter of the extension 46. Therefore, in some embodiments, the extension 46 may fit snugly within the recess 48.

[0103] In some embodiments, the shape of the groove 48 may prevent axial movement of the extension 46, particularly when the user pinches the wing 24a and paddle 14 together. In some embodiments, the groove 48 and extension 46 may reduce the likelihood of the wing 24a and paddle 14 separating during insertion and / or withdrawal of the catheter system 10 relative to the vascular system. In some embodiments, after the catheter 18 has been inserted into the vascular system, the force of the user's thumb in the distal direction may be sufficient to remove the extension 46 from the groove 48 to separate the wing 24a and paddle 14. In some embodiments, the groove 48 may be replaced by a hole of similar size.

[0104] In some embodiments, the extension 46 may extend upward from the paddle portion 14, and the wing portion 24a may include a groove 48. As described above, in some embodiments, the wing portion 24a may be made of a flexible material, allowing a user to pull the wing portion 24a to remove it from or deflect it away from the paddle portion 14, so as to disengage the needle hub 12 from the catheter adapter 22 after the catheter system 10 has been inserted into the vascular system. In some embodiments, the extension 46 may extend downward from the wing portion 24a, and the paddle portion 14 may include a groove 48.

[0105] Now for reference FIG. 4A-4DIn some embodiments, the catheter system 10 may include one or more recesses 50 and / or one or more ribs 52. In some embodiments, the ribs 52 may be disposed within the recesses 50. In some embodiments, the recesses 50 and / or ribs 52 may extend substantially perpendicular to the longitudinal axis 44 of the catheter system 10. In some embodiments, the ribs 52 and / or recesses 50 may reduce the likelihood of separation of the wings 24a and the paddle 14 during insertion and / or withdrawal of the catheter system 10 relative to the vascular system, particularly when the user pinches the wings 24a and the paddle 14 together. In some embodiments, the ribs 52 and / or recesses 50 may provide resistance to movement of the wings 24a relative to the paddle 14 in the proximal and distal directions. In some embodiments, after the catheter 18 has been inserted into the vascular system, the force of the user's thumb in the distal direction may be sufficient to remove the ribs 52 from the recesses 50 to separate the wings 24a and the paddle 14.

[0106] In some embodiments, the rib 52 may extend outward from the top of the propeller portion 14, and the bottom 38a of the wing portion 24a may include a groove 50, for example as... FIG. 4B-4D As shown. In some embodiments, rib 52 may extend outward from the bottom 38a of wing 24a, and the top of paddle 14 may include a groove 50. In some embodiments, catheter system 10 may include rib 52 but not groove 50. In some embodiments, rib 52 may enhance friction between wing 24a and paddle 14 and reduce movement between wing 24a and paddle 14. In some embodiments, wing 24a may be made of a flexible material so that after insertion of catheter system 10 into vascular system is completed, wing 24a may be pulled or deflected by the user away from paddle 14 to separate needle hub 12 from catheter adapter 22.

[0107] Now for reference FIG. 5A-5E In some embodiments, the conduit system 10 may include a herringbone patterned surface 54 and a corresponding herringbone patterned surface 56. In some embodiments, the herringbone patterned surface 54 may be substantially identical to the corresponding herringbone patterned surface 56. In some embodiments, the herringbone patterned surface 54 may be offset relative to the corresponding herringbone patterned surface 56, such that the herringbone patterned surface 54 fits within the corresponding herringbone patterned surface 56. In some embodiments, the bottom 38a of the wing 24a may include a herringbone patterned surface 54 or a corresponding herringbone patterned surface 56. In some embodiments, the top of the paddle portion 14 may include a herringbone patterned surface 54 or a corresponding herringbone patterned surface 56. In some embodiments, the herringbone patterned surface 54 and / or the corresponding herringbone patterned surface 56 may be formed by a plurality of extensions, and grooves are provided between the respective extensions.

[0108] In some embodiments, the herringbone patterned surface 54 and the corresponding herringbone patterned surface 56 may extend substantially perpendicular to the longitudinal axis 44 of the catheter system 10. In some embodiments, the herringbone patterned surface 54 and the corresponding herringbone patterned surface 56 may reduce the likelihood of separation of the wing 24a and the paddle 14 during insertion and / or withdrawal of the catheter system 10 relative to the vascular system. In some embodiments, during insertion and / or withdrawal, when the user pinches the wing 24a and the paddle 14 together, the herringbone patterned surface 54 and the corresponding herringbone patterned surface 56 may prevent the wing 24a from moving relative to the paddle 14 in the proximal and distal directions.

[0109] In some embodiments, after the catheter 18 is inserted into the vascular system, the user's thumb, applied in a distal direction, can move the herringbone patterned surface 54 relative to the corresponding herringbone patterned surface 56 to separate the wing 24a and the paddle 14. In some embodiments, the wing 24a may be constructed of a flexible material so that, after the catheter system 10 has been inserted into the vascular system, the wing 24a can be pulled away from or deflected away from the paddle 14 by the user to separate the needle hub 12 from the catheter adapter 22.

[0110] like FIG. 5E As shown, in some embodiments, the herringbone pattern surface 54 may be generally V-shaped, and the corresponding herringbone pattern surface 56 may also be V-shaped. More specifically, in some embodiments, the herringbone pattern surface 54 may include one or more first grooves and / or one or more first extensions oriented along a first direction. Additionally, in some embodiments, the herringbone pattern surface 54 may include one or more second grooves and / or one or more second extensions oriented along a second direction to form a generally V-shape. In some embodiments, such as during insertion of the catheter system 10, the generally V-shape of the herringbone pattern surface 54 may facilitate initial interlocking between the herringbone pattern surface 54 and the corresponding herringbone pattern surface 56; however, in response to releasing the herringbone pattern surface 54 from the corresponding herringbone pattern surface 56, the engagement between the herringbone pattern surface 54 and the corresponding herringbone pattern surface 56 may be weakened to facilitate free sliding between them.

[0111] Now for reference FIG. 6In some embodiments, the bottom 38a of the wing 24a and the top of the propeller 14 may be inclined. In some embodiments, the thickness of the inclined surface 58 of the propeller 14 may be such that the thickness at the distal end of the inclined surface 58 is greater than the thickness at the proximal end of the inclined surface 58, such that the wing 24a resists movement in the distal direction. In some embodiments, the inclined surface 60 of the wing 24a may contact the inclined surface 58 in whole or in part along the length of the inclined surface 58. In some embodiments, the thickness of the inclined surface 60 of the wing 24a may be such that the thickness at the proximal end of the inclined surface 60 is greater than the thickness at the distal end of the inclined surface 60.

[0112] In some embodiments, the inclined surfaces 58 and 60 may reduce the likelihood of separation of the wings 24a and paddle 14 during insertion and / or withdrawal of the catheter system 10 relative to the vascular system, particularly when the user pinches the wings 24a and paddle 14 together. In some embodiments, after the catheter 18 has been inserted into the vascular system, the force exerted by the user's thumb in the distal direction may be sufficient to overcome the inclined surface 58 to separate the wings 24a and paddle 14.

[0113] Now for reference FIG. 7 In some embodiments, the top of the paddle portion 14 and / or the bottom 38a of the wing portion 24a may include a rough texture 62, which may provide resistance to movement of the wing portion 24a relative to the paddle portion 14 in the proximal and / or distal directions, particularly when the user pinches the wing portion 24a and the paddle portion 14 together during insertion of the catheter 18 into the vascular system.

[0114] In some embodiments, the rough texture 62 may be provided on the proximal portion of the side of the paddle portion 14 and / or the wing portion 24a. In some embodiments, the distal portion or side of the paddle portion 14 and / or the wing portion 24a may be smooth. In some embodiments, the rough texture 62 may be provided on the top of the paddle portion 14 and its height may be sufficient to be embedded in the flexible material of the wing portion 24a. In some embodiments, the rough texture 62 may be rigid.

[0115] Now for reference FIG. 8A-8BIn some embodiments, the propeller portion 14 may include an arm 64 that is separable from the portion 66 of the propeller portion 14 located below the wing portion 24a, such that the arm 64 is movable independently of that portion of the propeller portion 14 located below the wing portion 24a. In some embodiments, the arm 64 is movable between a first position, in which distal movement of the wing portion 24a and the conduit adapter 22 is prevented, and in a second position, distal movement of the wing portion 24a and the conduit adapter 22 is permitted. In some embodiments, when the arm 64 is in the first position, the distal end of the wing portion 24a may contact the arm 64. In some embodiments, when the arm 64 is in the second position, the arm 64 may be positioned below the wing portion 24a, allowing distal movement of the wing portion 24a. In some embodiments, the curvature of the arm 64 may substantially reflect the curvature of the outer edge of the wing portion 24a.

[0116] Now for reference FIG. 9A-9B In some embodiments, the wing 24a may be disposed between the raised distal edge 68 and / or the raised proximal edge 70 of the paddle portion 14. In some embodiments, the raised distal edge 68 and / or the raised proximal edge 70 may reduce the likelihood of separation of the wing 24a and the paddle portion 14 during insertion and / or withdrawal of the catheter system 10 relative to a patient's blood vessels.

[0117] In some embodiments, in order to advance catheter 18 distally after insertion into the vascular system and / or remove needle hub 12 from catheter adapter 22, the user may lift and slightly rotate wing 24a to overcome the raised distal edge 68. In some embodiments, the raised distal edge 68 may be tapered, such that the outer portion of the raised distal edge 68 is thicker than the inner portion of the raised distal edge 68. In some embodiments, the raised proximal edge 70 may be tapered, such that the outer portion of the raised proximal edge 70 is thicker than the inner portion of the raised proximal edge 70. In some embodiments, the raised distal edge 68 may be connected to the raised proximal edge 70 by a raised intermediate edge, such that the raised distal edge 68, the raised intermediate edge, and the raised proximal edge 70 form a U-shape around wing 34a (not shown).

[0118] Now for reference FIG. 10A-10B In some embodiments, the wing 34a may include a slot 72 disposed between the upper portion 74 and the lower portion 76 of the wing 34a. In some embodiments, the paddle portion 14 may be disposed in the slot 72. In some embodiments, the wing 34a may be disposed above and below the paddle portion 14. In some embodiments, during insertion and / or retraction of the catheter system 10 relative to the vascular system, the user may pinch the upper portion 74 and the lower portion 76 of the wing 34a together to prevent movement of the paddle portion 14 relative to the wing 34a.

[0119] Now for reference FIG. 11A-11B In some embodiments, the catheter system 10 may include a cantilever element 78 and a recess or groove 79 configured to receive the cantilever element 78. In some embodiments, the paddle portion 14 may include the cantilever element 78, and the bottom 38a of the wing portion 24a may include the recess 79. In some embodiments, the cantilever element 78 may not be disposed within the recess 79. In these embodiments, during insertion of the catheter 18 into the vascular system, the cantilever element 78 may be inserted into the recess 79 in response to the user clamping the wing portion 24a and the paddle portion 14 together and pressing them upward against the cantilever element 78.

[0120] In some embodiments, one or more sides 80 of the cantilever element 78 may be cut from the paddle portion 14 to allow movement of the cantilever element 78. In some embodiments, the cantilever element 78 may be configured to bend at its bottom 82 near a side of the cantilever element 78. In some embodiments, for example, as shown in FIG11, the cantilever element 78 may be elongated, which may facilitate the cantilever element 78 being secured within the recess 79 in response to movement made by a user. In some embodiments, the cantilever element 78 may include any suitable shape. In some embodiments, when the user is not biasing the cantilever element 78 upward into the recess 79, the cantilever element 78 may be substantially flush with a portion of the wing 34a surrounding the cantilever element 78.

[0121] Now for reference FIG. 12A to FIG. 12B In some embodiments, the outer surface of the catheter adapter 22 may include a protrusion 84, and the needle hub 12 may include a slot 86 configured to receive the protrusion 84. In some embodiments, the slot 86 may include an L-shape. In some embodiments, the protrusion 84 may be located at an end 88 of the L-shape. In some embodiments, the protrusion 84 being located at the end 88 of the L-shape prevents the needle hub 12 and the catheter adapter 22 from separating from each other and from axial movement relative to each other. In some embodiments, to remove the protrusion 84 from the L-shape and separate the catheter adapter 22 from the needle hub 12, a user may rotate the catheter adapter 22 to remove the protrusion from the end 88 of the L-shape and align the protrusion with the opening 90 of the L-shape opposite the end 88 of the L-shape.

[0122] Now for reference FIG. 13In some embodiments, the outer surface of the catheter adapter 22 may include one or more protrusions 92 extending radially outward from the outer surface of the catheter adapter 22. In some embodiments, one of the protrusions 92a may be offset relative to another protrusion 92b, such that protrusion 92a is proximal to protrusion 92b. In some embodiments, each protrusion 92 may be secured in one or more recesses 94 of the needle hub 12. In some embodiments, because the protrusions a, b are offset from each other, the needle hub 12 and the catheter adapter 22 will not separate if the catheter adapter 22 and the needle hub 12 rotate slightly relative to each other during insertion and / or withdrawal of the catheter system 10 relative to the vascular system. In some embodiments, to separate the catheter adapter 22 and the needle hub 12, the user may rotate the needle hub 12 to disengage the protrusion 92 from the recess 94.

[0123] Now for reference FIG. 14A to FIG. 14B In some embodiments, the distal end of the needle hub 12 may include an arm 96, which may include opposing edges 98 and a base 100. In some embodiments, the opposing edges 98 may extend through the wall of the needle hub 12 to allow the arm 96 to move independently of the rest of the needle hub 12. In some embodiments, the inner surface of the arm 96 may include a recess 102 or a stepped surface configured to receive a protrusion 104 of the proximal end 32 of the catheter adapter 22 to secure the catheter adapter 22 to the needle hub 12 and prevent separation of the catheter adapter 22 and the needle hub 12. In some embodiments, the arm 96 may be flexible, allowing it to bend, and the arm 96 may allow the catheter adapter 22 to be removably coupled to the needle hub 12.

[0124] Now for reference FIG. 15A-15B In some embodiments, the proximal end 32 of the catheter adapter 22 may include one or more protrusions 106 that can engage with one or more recesses 108 of the needle seat 12 in a snap-fit ​​manner. In some embodiments, each protrusion 106 may include a spherical portion, and each of the one or more recesses may include a socket shape.

[0125] Now for reference FIG. 16In some embodiments, a removable clip 110 may be used to engage the catheter adapter 22 and the needle hub 12 together. In some embodiments, after the catheter 18 is inserted into the patient's vascular system, the removable clip 110 may be removed to allow separation between the catheter adapter 22 and the needle hub 12. In some embodiments, the removable clip 110 may include any suitable clip type. In some embodiments, an end of the removable clip 110 may be disposed in a recess in the catheter adapter 22 and the needle hub 12 to engage the catheter adapter 22 and the needle hub 12 together. In some embodiments, the removable clip 110 may be oriented parallel to the longitudinal axis 44. Thus, in some embodiments, only a single end of the removable clip 110 may be removed from the specific recess in which it is disposed to allow separation of the catheter adapter 22 and the needle hub 12.

[0126] Now for reference FIG. 17 In some embodiments, the wing 24a may include an elevated proximal portion 112, which may thicken the wing 24a and facilitate a better grip on the wing 24a in case the user attempts to reposition the catheter adapter 22 and needle hub 12 after they have separated.

[0127] Now for reference FIG. 18A-18B In some embodiments, a paddle portion 14 extending from the body 114 of the needle holder 12 may be disposed on top of the wing portion 24a. In some embodiments, when the paddle portion 14 is disposed on top of the wing portion 24a, this can prevent separation of the catheter 18 and the needle holder 12 due to the natural tendency of the user to guide the insertion of the catheter 18 with his thumb. In some embodiments, the thumb may be positioned on top of the paddle portion 14 and / or the index finger of the user's same hand may be positioned below the wing portion 24a.

[0128] Now for reference FIG. 19 In some embodiments, the shape of the bottom of the paddle portion 14 may facilitate a user grip on the paddle portion 14. In some embodiments, the outer surface 116 of the bottom of the paddle portion 14 may include a protrusion 118. In some embodiments, the inner surface 120 of the bottom of the paddle portion 14 near the protrusion 118 may be generally flat. In some embodiments, the inner surface 120 of the paddle portion 14 is thinner than the outer surface 116 of the bottom of the paddle portion 14.

[0129] Now for reference FIG. 20In some embodiments, the proximal portion of the ridge 15 may be thicker than the distal portion of the ridge 15, which can facilitate a user's grip on the ridge 15 and the paddle portion 14. In some embodiments, the thickness of the distal portion of the ridge 15 may be substantially uniform, which can reduce the forward tilting effect in which the thumb pushes the wing portion 24a forward in response to contact with the cone in the distal direction. In some embodiments, the thickness of the distal portion of the ridge 15 may be increased in the distal direction to reduce the forward tilting effect.

[0130] Now for reference FIG. 21A-21B In some embodiments, the top of the wing 24a may include a groove 122, which may be saddle-shaped and have a ridge between two higher points or peaks. In some embodiments, the groove 122 may be approximately thumb-sized and configured to accommodate a user's thumb. In some embodiments, although the position of the groove 122 may vary, it may be located near the distal edge of the wing 24a. In some embodiments, the groove 122 provides a natural placement for the thumb to prevent the wing 24a from moving prematurely distally from the paddle portion 14.

[0131] Now for reference FIG. 22 In some embodiments, for example, such as FIG. 22 As shown, the proximal end of ridge 15 can be removed. Therefore, in some embodiments, ridge 15 may not extend into the body 114 of needle seat 12. In these and other embodiments, ridge 15 may be configured to prevent the aforementioned forward tilting effect.

[0132] Now for reference FIG. 23A-23B The paddle portion 14 may include a bend or a U-shape, which may form an upper portion 124 and a lower portion 126 of the paddle portion 14. In some embodiments, the upper portion 124 and the lower portion 126 may be respectively positioned above and below the wing portion 24a, sandwiching the wing portion 24a in the middle. In some embodiments, the upper portion 124 and the lower portion 126 may be spaced apart from the wing portion 24a, which may facilitate separation and movement between the catheter adapter 22 and the needle hub 12. In some embodiments, during catheter 18 insertion, in response to a user pinching the upper portion 124 and the lower portion 126 together, the upper portion 124 and the lower portion 126 may contact and clamp the wing portion 24a, thereby preventing separation of the catheter adapter 22 and the needle hub 12. In some embodiments, the outer edge 128 of the wing portion 24a may be spaced apart from the paddle portion 14 before and / or after the user pinches it. In some embodiments, the upper portion 124 and / or the lower portion 126 may be constructed of a flexible material.

[0133] Now for reference FIG. 24A-24BIn some embodiments, the paddle portion 14 may be disposed on top of the wing portion 24a. In some embodiments, the duct system 10 may include a wing portion 130, which may be smaller than the wing portion 24a and / or the paddle portion 14. In some embodiments, the wing portion 130 may be formed of a flexible material and may be movable between an upward position and a downward position. In some embodiments, the top of the paddle portion 14 may include a slot or groove 132.

[0134] In some embodiments, when the wing 130 is positioned downwards, a portion of the wing 130 may be disposed within the groove 132. In some embodiments, during disengagement of the catheter adapter 22 and the needle hub 12, in response to the wing 130 being positioned downwards, the wing 130 may be configured to move along the groove 132 and prevent the cannula 16 from bending. In some embodiments, the groove 132 may be straight and aligned parallel to the longitudinal axis 44.

[0135] In some embodiments, the wing 130 may not extend beyond the outer edge 128 of the wing 24a. In some embodiments, the wing 130 may extend from the conduit adapter 22 or the wing 24a. According to some embodiments, FIG. 24B The wing 130 is shown in a downward position, and FIG. 24C The wing 130 is shown in an upward position. In some embodiments, the bottom of the wing 130 may include a protrusion or another shape that can be fitted into a recess 132.

[0136] In some embodiments, the wing 130 can facilitate one-handed use of the catheter system 10 and prevent premature separation of the catheter adapter 22 and the needle hub 12. In some embodiments, the user can contact the wing 130 with their thumb and pinch the wing 130, the paddle portion 14, and the wing 24a between their thumb and their index finger located below the wing 24a. In some embodiments, the wing 130 can be moved between a downward position and an upward position by the user's thumb to release the catheter adapter 22 from the needle hub 12. In some embodiments, the catheter adapter 22 may include a stop feature 133 configured to contact the bottom of the paddle portion 14 to prevent the needle hub 12 from rotating relative to the catheter adapter 22.

[0137] Now for reference FIG. 25A-25FThe distal end of the paddle portion 14 may include a curved surface 134, which may include a concave curved surface or a U-shape generally facing distally. In some embodiments, the curved surface 134 may be configured to receive the index finger of a user holding the device end-to-end. In some embodiments, the catheter adapter 22 may include a curved surface 136 on the side of the longitudinal axis 44 opposite to the curved surface 134. In some embodiments, the curved surface 136 includes a concave curved surface or a U-shape generally facing the side of the catheter system 10. In some embodiments, the curved surface 136 may be configured to receive the thumb of a user holding the device end-to-end.

[0138] In some embodiments, the curved surface 136 may include one or more tactile features that may aid in user gripping. In some embodiments, the tactile features may include ribs, protrusions, grooves, ridges, etc. In some embodiments, the conduit adapter 22 may include a stop feature 133 that may be configured to contact the bottom of the paddle portion 14 to prevent rotation, for example, as... FIG. 25C-25D As shown.

[0139] Now for reference FIG. 26A The diagram illustrates a prior art catheter system 138. The prior art catheter system 138 may include a diaphragm 140 disposed within a catheter adapter 142, and a portion 144 of a needle hub 146 may be inserted into the catheter adapter 142. Referring now to... FIG. 26B-26C The catheter system 10 may include a diaphragm 147, which is shorter than the diaphragm 140 of the prior art catheter system 138. In some embodiments, when the catheter adapter 22 and the needle hub 12 are coupled together, the portion 148 of the needle hub 12 inserted into the catheter adapter 22 may be longer than the portion 144, in order to facilitate greater stability and enhanced alignment between the catheter adapter 22 and the needle hub 12 when the catheter 18 is inserted into the vascular system. In some embodiments, the catheter adapter 22 may include a low-resistance diaphragm. For example, the diaphragm 147 may be low-resistance.

[0140] In some embodiments, the distal end of the diaphragm 147 may be near or proximal to the junction of the lumen of the side port 34 and the lumen of the catheter adapter 22 (which extends between the distal end 30 and the proximal end 32 of the catheter adapter 22). In some embodiments, the proximal end of the diaphragm 147 may be distal to the proximal end of the side port 34. In some embodiments, a press-fit washer 150 may be disposed between the portion 148 and the diaphragm 147, which may allow the catheter system 10 to withstand high pressure.

[0141] Now for reference FIG. 26D-26EIn some embodiments, the cannula 16 may include a solid guide pin that may not include any notches. In some embodiments, the solid guide pin may reduce the length of the diaphragm 147 and / or increase the length of the portion 148. In some embodiments, the solid guide pin may be constructed by extrusion, grinding, laser, etching, or other suitable methods.

[0142] Now for reference FIG. 27A-27C In some embodiments, the catheter adapter 22 may include a rib 152 that may be generally aligned with the longitudinal axis 44. In some embodiments, the inner portion of the paddle portion 14 may include a groove 154 that may also be generally aligned with the longitudinal axis 44. In some embodiments, the rib 152 may be disposed within the groove 154, which may facilitate alignment of the catheter adapter 22 and the needle hub 12 during insertion of the catheter 18 into the vascular system and / or withdrawal of the cannula 16 from the catheter adapter 22. In some embodiments, the cannula 16 may include a solid guide needle or an inner lumen extending therefrom. In some embodiments, a user may push and pull the paddle portion 14 relative to the catheter adapter 22 to overcome any frictional resistance movement of the rib 152 relative to the groove 154.

[0143] All examples and conditional language described herein are intended for educational purposes to aid the reader's understanding of the invention and the inventors' concepts for further development in the field, and should be interpreted as not being limited to such specific 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 thereto without departing from the spirit and scope of the invention. It should be understood that the various embodiments can be combined with each other.

Claims

1. A catheter system comprising: A catheter adapter (22) includes a proximal end, a distal end, and an inner lumen extending along a longitudinal axis through the proximal and distal ends; A wing (24a) extending outward from the conduit adapter (22), wherein the wing includes a groove or slot (40). A catheter (18) extends distally from the catheter adapter (22); Needle hub (12); A paddle portion (14) is coupled to the distal end of the needle seat (12) and extends outward and distally from the distal end of the needle seat (12). The paddle portion (14) includes a ridge (15) and a low surface portion. The ridge (15) forms the proximal and outer edges of the paddle portion (14). The low surface portion is located inside and distal to the ridge (15). The upper surface of the low surface portion is lower than the top surface of the ridge (15), and the upper surface of the low surface portion includes an extension (42). The extension (42) is configured to engage a groove or slot (40) of the wing portion (24a), which extends substantially perpendicular to the longitudinal axis of the conduit system, such that the extension (42) can move laterally within the groove or slot (40). A cannula (16) extending through the catheter adapter (22) and the catheter (18), wherein the cannula (16) includes a proximal end and a distal end, wherein the proximal end of the cannula (16) is secured within the needle hub (12); The lower surface portion of the propeller (14) is configured to receive the wing (24a) such that the proximal edge of the wing (24a) is adjacent to the distal side of the ridge (15), and the extension (42) engages within the groove or slot (40) to prevent movement of the wing (24a) relative to the propeller (14) in a distal or proximal direction parallel to the longitudinal axis.

2. The catheter system according to claim 1, wherein, The bottom of the wing is smooth.

3. The catheter system according to claim 1, wherein, The wing includes a first wing and a second wing, the first wing extending outward from the conduit adapter and including the groove or slot, and the second wing extending outward from the conduit adapter in a direction away from the first wing.

4. The catheter system according to claim 1, wherein, The extension includes a spherical portion, wherein the wing includes the groove, wherein the groove includes a recess.

5. The catheter system according to claim 1, wherein, The wing is made of a flexible material, allowing it to be pulled away from the propeller to remove the extension from the groove or slot.

6. The catheter system according to claim 1, wherein, The extension includes a rib, wherein the wing includes a groove, wherein the groove is elongated to substantially match the shape of the rib.

7. The catheter system according to claim 1, wherein, The extension is part of the herringbone pattern surface, wherein the wing includes a corresponding herringbone pattern that includes the groove.

8. A catheter system comprising: A catheter adapter, comprising a proximal end, a distal end, and an inner lumen extending through the proximal and distal ends; A wing extending outward from the conduit adapter, wherein the wing includes a groove or slot; A catheter that extends distally from the catheter adapter; Needle hub, which is removably connected to the catheter adapter; A paddle portion, coupled to the distal end of the needle hub and extending outwardly and distally from the distal end of the needle hub, includes a ridge and a low-surface portion. The ridge forms the proximal and outer edges of the paddle portion. The low-surface portion is located inside and distally to the ridge. The upper surface of the low-surface portion is lower than the top surface of the ridge, and the upper surface of the low-surface portion includes an extension configured to engage a groove or slot of the wing portion. The groove or slot extends substantially perpendicular to the longitudinal axis of the conduit system, allowing the extension to move laterally within the groove or slot. The cannula extends through the catheter adapter and the catheter, and the cannula includes a proximal end and a distal end, the proximal end of which is secured within the needle hub; In the state where the conduit adapter and the needle seat are adjacent to each other, the low surface portion of the paddle is configured to receive the wing such that: the distal side of the ridge is adjacent to the proximal edge of the wing, and the groove or slot is in contact with the extension to prevent the wing from moving relative to the paddle in the distal or proximal direction.

9. The catheter system according to claim 8, wherein, The propeller portion further includes a rough texture, wherein the proximal portion of the propeller portion includes the rough texture, and wherein the distal portion of the propeller portion is smooth.

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