Catheter system with guidewire and needle safety clip
The catheter system with a guidewire and needle safety clip mechanism addresses the challenge of safely managing the introducer needle by enabling controlled advancement and withdrawal, enhancing procedural safety and reducing needle stick risks.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- BECTON DICKINSON & CO
- Filing Date
- 2024-05-09
- Publication Date
- 2026-06-04
AI Technical Summary
Existing catheter systems lack effective mechanisms for safely managing the introducer needle after use, posing potential risks and complications during and after vascular access procedures.
A catheter system incorporating a guidewire and needle safety clip mechanism that allows controlled advancement and withdrawal of the introducer needle, utilizing a series of slider and arm configurations to ensure safe detachment and containment of the needle tip, enhancing user safety.
The system provides a secure and efficient method for safely managing the introducer needle, reducing the risk of needle sticks and enhancing procedural safety by ensuring complete withdrawal and containment of the needle tip.
Smart Images
Figure 2026518277000001_ABST
Abstract
Description
Technical Field
[0001] Background Catheters are widely used in various infusion therapies. For example, a catheter may be used to inject liquids such as saline, various drugs, and total parenteral nutrition into a patient. A catheter may also be used to draw blood from a patient.
Background Art
[0002] A common type of catheter device includes a catheter that is an over-the-needle. As its name suggests, an over-the-needle catheter may be placed on a introducer needle having a sharp tip. A catheter assembly may include a catheter hub, a catheter extending in a distal direction from the catheter hub, and an introducer needle extending through the catheter. The catheter and the introducer needle may be assembled such that the bevel of the needle faces upward away from the patient's skin and the tip of the introducer needle extends beyond the tip of the catheter. The catheter and the introducer needle are typically inserted into a patient's blood vessel at a shallow angle through the skin.
[0003] The subject matter claimed herein is not limited to embodiments that operate only in the above-described environment or solve any disadvantages. Rather, this background information is provided only to illustrate an example of a technical field in which some of the embodiments described herein may be implemented.
Summary of the Invention
[0004] Summary The present disclosure generally relates to vascular access devices, systems, and methods. In particular, the present disclosure relates to a catheter system having a guide wire and a needle safety clip, and related devices and methods.
[0005] In some embodiments, the catheter system may include a catheter assembly, which may include a catheter hub. In some embodiments, the catheter hub may include a terminal end, a proximal end, and a lumen extending through the terminal end of the catheter hub and the proximal end of the catheter hub. In some embodiments, the catheter system may include a catheter, which may include a terminal tip and which may extend from the terminal end of the catheter hub. In some embodiments, the catheter system may include a needle safety clip located in a safety can that may be positioned proximal to the catheter hub.
[0006] In some embodiments, the catheter system may include a barrel, which may include a terminal end and a proximal end. In some embodiments, the catheter system may include a needle hub fixed to the barrel. In some embodiments, the catheter system may include an introduction needle, which may include a sharp terminal tip and a proximal end. In some embodiments, the proximal end of the introduction needle may be fixed within the needle hub.
[0007] In some embodiments, the catheter system may include a catheter hub slider, which may include a flexible arm. In some embodiments, the flexible arm may be part of an arm extending to the end of the catheter hub slider. In some embodiments, the catheter system may include a guidewire, which may include a first end and a second end. In some embodiments, the first end of the guidewire may be configured to advance through the introduction needle to the end. In some embodiments, the catheter system may include a guidewire slider.
[0008] In some embodiments, the catheter system may be configured to move from a first position to a second position. In some embodiments, when the catheter system is in the first position, the guidewire slider may be positioned at the proximal end of the guidewire slider and configured to slide from the proximal end to the terminal position to advance the guidewire to the terminal. In some embodiments, when the catheter system is in the first position, the catheter hub slider may be positioned at the proximal end of the catheter hub slider. In some embodiments, when the catheter system is in the first position, the flexible arm of the catheter hub slider may contact the needle hub to prevent the catheter hub slider from sliding from the proximal end to the terminal advancement position.
[0009] In some embodiments, when the catheter system is in a second position, the guidewire slider may be positioned at the terminal position so that the guidewire advances beyond the terminal tip of the catheter. In some embodiments, when the catheter system is in a second position, the catheter hub slider may be positioned at the proximal position of the catheter hub slider. In some embodiments, when the catheter system is in a second position, the terminal extension arm of the catheter hub slider may be connected to the catheter assembly to prevent terminal and proximal movement of the catheter hub slider relative to the catheter hub. In some embodiments, in response to movement of the catheter system from a first position to a second position, the guidewire slider may be configured to push out a flexible arm so that the flexible arm is disengaged from contact with the needle hub, and the catheter hub slider may be configured to slide from the proximal position to the terminal advance position. In some embodiments, when the catheter system is in a second position, the guidewire slider may be configured to slide back and forth between the proximal and terminal positions of the guidewire slider.
[0010] In some embodiments, the second end of the guidewire may be fixed within the barrel. In some embodiments, the second end of the guidewire may be fixed within the needle hub. In some embodiments, the guidewire slider may include a U-shaped slot through which it passes. In some embodiments, when the catheter system is in a first position, the guidewire may be positioned in a double-throw configuration within the U-shaped slot so that there is a 2:1 advance ratio between the first end of the guidewire and the guidewire slider. In some embodiments, the U-shaped slot is oriented vertically within the barrel. In some embodiments, the U-shaped slot may be asymmetrical.
[0011] In some embodiments, the catheter may be configured to move from a second position to a third position. In some embodiments, when the catheter system is in the third position, the guidewire slider is positioned at the terminal position so that the guidewire advances beyond the terminal tip of the catheter. In some embodiments, when the catheter system is in the third position, the catheter hub slider may be positioned at the terminal advancement position so that the terminal advancement of the catheter hub slider advances the catheter assembly.
[0012] In some embodiments, the terminally advanced position of the catheter hub slider is a partially terminally advanced position. In some embodiments, the safety can may include a groove. In some embodiments, the barrel may include an internal ridge. In some embodiments, the catheter system may be configured to move from a third position to a fourth position. In some embodiments, when the catheter system is in the fourth position, the guidewire slider is positioned at the terminal position so that the guidewire is advanced beyond the terminal tip of the catheter. In some embodiments, when the catheter system is in the fourth position, the catheter hub slider may be positioned fully terminally advanced.
[0013] In some embodiments, in response to movement of the catheter system from a third to a fourth position, the end extension arm of the catheter hub slider may contact an internal ridge on the inner surface of the barrel, disengaging the end extension arm from the groove of the safety can and detaching the catheter hub slider from the catheter assembly. In some embodiments, the end extension arm may include a hook and an outward extension projection. In some embodiments, in response to movement of the catheter system from a third to a fourth position, the outward extension projection of the catheter hub slider may contact an internal ridge on the inner surface of the barrel, disengaging the hook from the groove of the safety can and detaching the catheter hub slider from the catheter assembly.
[0014] In some embodiments, the end extension arm may be a first end extension arm. In some embodiments, the catheter hub slider may include a second end extension arm opposite the first end extension arm. In some embodiments, in response to movement of the catheter system from a third to a fourth position, the second end extension arm of the catheter hub slider may contact an inclined surface on the inner surface of the barrel, disengaging the second end extension arm from the groove of the safety can and detaching the catheter hub slider from the catheter assembly.
[0015] In some embodiments, when the catheter system is in the fourth position, the barrel may be moved proximal to the catheter assembly to withdraw the introduction needle from the catheter assembly. In some embodiments, in response to the proximal withdrawal of the introduction needle past the needle safety clip, the needle safety clip may be detached from the catheter hub. In some embodiments, when the catheter system is in the first, second, third, and fourth positions, the introduction needle may extend through the catheter. In some embodiments, the flexible arm may include a fin that is tapered inward toward the terminal. In some embodiments, in response to the movement of the catheter system from the first position to the second position, the guidewire slider may push out the fin so that the flexible arm is disengaged from contact with the needle hub, and the catheter hub slider is configured to slide from the catheter hub slider proximal position to the terminal advanced position.
[0016] In some embodiments, the flexible arm may be a first flexible arm. In some embodiments, the catheter hub slider may include a second flexible arm opposite the first flexible arm. In some embodiments, the second flexible arm of the catheter hub slider may contact the needle hub to prevent the catheter hub slider from sliding from the proximal position to the terminally advanced position. In some embodiments, in response to movement of the catheter system from a first position to a second position, the guidewire slider may be configured to push out the second flexible arm so that the second flexible arm is disengaged from contact with the needle hub, and the catheter hub slider slides from the proximal position to the terminally advanced position. In some embodiments, the catheter assembly may include another safety clip located in a safety can and configured to capture the sharp terminal tip of the introduction needle in response to proximal withdrawal of the introduction needle.
[0017] In some embodiments, the barrel may include a slot located between the terminal end and the proximal end of the barrel. In some embodiments, when the catheter system is in a first position, the guidewire slider may extend through the slot and slide along the slot from the proximal end position to the terminal position to advance the guidewire to the terminal. In some embodiments, when the catheter system is in a second position, the guidewire slider may extend through the slot and be configured to slide along the slot from the terminal end position to the proximal end position of the catheter hub.
[0018] In some embodiments, the proximal end of the barrel may include an opening. In some embodiments, the catheter hub slider may be configured to slide within the opening from the proximal catheter hub slider position to the terminal advancement position. In some embodiments, the guidewire slider may be configured to slide within the opening from the guidewire slider proximal position to the terminal position. In some embodiments, the guidewire slider may be configured to wrap around the catheter hub slider. In some embodiments, the guidewire slider may be configured to completely wrap around the catheter hub slider.
[0019] It should be understood that the general description above and the detailed description below are illustrative and descriptive, and do not limit the invention as described in the claims. It should be understood that various embodiments are not limited to the configurations and means shown in the drawings. Furthermore, it should be understood that it is possible to combine embodiments, utilize other embodiments, and make structural modifications, and that these can be done without departing from the scope of the various embodiments of the present invention, unless otherwise stated in the claims. Therefore, the detailed description below should not be interpreted as restrictive.
[0020] The examples will be described and explained in more detail using the attached drawings. [Brief explanation of the drawing]
[0021] [Figure 1A] Figure 1A is a top perspective view of an exemplary first position of a catheter system according to some embodiments. [Figure 1B] Figure 1B is a partial cross-sectional view of the catheter system at the first position in some embodiments. [Figure 1C] Figure 1C is a top perspective view of an exemplary catheter hub slider of a catheter system according to some embodiments. [Figure 1D] Figure 1D is a bottom perspective view of the hub slider of the catheter system according to some embodiments. [Figure 1E] Figure 1E is a cross-sectional view of the catheter system at the first position in some embodiments. [Figure 1F] Figure 1F is a side view showing a part of the catheter system at the first position in some embodiments. [Figure 1G] Figure 1G is a top partial cross-sectional view of the catheter system at the first position according to some embodiments. [Figure 2A] Figure 2A is a top perspective view of an example of a guide wire slider according to some embodiments. [Figure 2B] Figure 2B is a top perspective view of an example of a guide wire according to some embodiments. [Figure 2C] Figure 2C is a top perspective view of an example of a needle safety clip according to some embodiments. [Figure 2D] Figure 2D is a top perspective view of another exemplary needle safety clip according to some embodiments. [Figure 3A] Figure 3A is a top perspective view of an exemplary second position of a catheter system according to some embodiments. [Figure 3B] Figure 3B is a bottom perspective view of the catheter system at the second position according to some embodiments. [Figure 4A]Figure 4A is a top perspective view of an exemplary catheter system in a third position according to several embodiments. [Figure 4B] Figure 4B is a top perspective view showing an example of a safety can that can be connected to a catheter hub slider in a third position, according to some embodiments. [Figure 5A] Figure 5A is a top perspective view showing how the safety can may be detached from the catheter hub slider when moved to an exemplary fourth position, according to one embodiment. [Figure 5B] Figure 5B is a top perspective view of a catheter system in a fourth position according to several embodiments. [Figure 6A] Figure 6A is a lower perspective view showing a portion of a catheter system in the fourth position according to several embodiments. [Figure 6B] Figure 6B is an upward perspective view of a catheter system with an exemplary introduction needle that has been withdrawn to the proximal end past the needle safety clip, so that the needle safety clip is detached from the catheter hub. [Figure 7A] Figure 7A is a top perspective view of an exemplary catheter system with slots according to one embodiment, where the catheter system is shown in position 1. [Figure 7B] Figure 7B is a cross-sectional view of a catheter system with a slot according to one embodiment, where the catheter system is shown in position 1. [Figure 7C] Figure 7C is a top perspective view of a catheter system with a slot according to one embodiment, where the catheter system is shown in second position. [Figure 7D] Figure 7D is a top perspective view of a catheter system with a slot according to one embodiment, where the catheter system is shown in third position. [Figure 7E] Figure 7E is a top perspective view of a catheter system with a slot according to one embodiment, where the catheter system is shown in position 4. [Modes for carrying out the invention]
[0022] Description of the Embodiment Referring to Figures 1A to 6B, in some embodiments, the catheter system 10 may include a catheter assembly 12, which may include a catheter hub 14. In some embodiments, the catheter hub 14 may include a terminal end 16, a proximal end 18, and a lumen 20 extending through the terminal end 16 and proximal end 18 of the catheter hub 14. In some embodiments, the catheter system 10 may include a catheter 22, which may include a terminal tip 24 and extend from the terminal end 16 of the catheter hub 14. In some embodiments, the catheter system 10 may include a needle safety clip 26 located in a safety can 28 positioned proximal to and / or adjacent to the catheter hub 14.
[0023] In some embodiments, the catheter system 10 may include a barrel 30, which may include a terminal end 31 and a proximal end 32. In some embodiments, the catheter system 10 may include a needle hub 34 fixed to the barrel 30. In some embodiments, the catheter system 10 may include an introduction needle 36, which may include a sharp terminal tip 38 and a proximal end 40. In some embodiments, the proximal end 40 of the introduction needle 36 may be fixed within the needle hub 34.
[0024] In some embodiments, the catheter system 10 may include a catheter hub slider 42, which may include a flexible arm 44. In some embodiments, the flexible arm 44 may extend into and be part of a terminal extension arm 46 of the catheter hub slider 42. In some embodiments, the catheter system 10 may include a guidewire 48, which may include a first end 50 and a second end 52. In some embodiments, the first end 50 of the guidewire 48 may be configured to advance to the terminal through the introduction needle 36. In some embodiments, the catheter system 10 may include a guidewire slider 54.
[0025] In some embodiments, the catheter system 10 may be configured to move from a first position, for example, shown in Figures 1A-1B and 1-1F, to a second position, for example, shown in Figure 3A-3B. In some embodiments, when the catheter system 10 is in the first position, the guidewire slider 54 may be positioned at the proximal end of the guidewire slider and configured to slide from the proximal end to the terminal position to advance the guidewire 48 to the terminal. In some embodiments, when the catheter system 10 is in the first position, the catheter hub slider 42 may be positioned at the proximal end of the catheter hub slider. In some embodiments, when the catheter system 10 is in the first position, the flexible arm 44 of the catheter hub slider 42 may contact the needle hub 34 to prevent the catheter hub slider 42 from sliding from the proximal end to the terminal advancement position.
[0026] In some embodiments, when the catheter system 10 is in the second position, the guidewire slider 54 may be positioned at the terminal position so that the guidewire 48 advances beyond the terminal tip 24 of the catheter 22. In some embodiments, when the catheter system 10 is in the second position, the catheter hub slider 42 may be positioned at the catheter hub slider proximal position. In some embodiments, when the catheter system 10 is in the second position, the terminal extension arm 46 of the catheter hub slider 42 may be connected to the catheter assembly 12 via a safety can 28 to prevent terminal and proximal movement of the catheter hub slider 42 relative to the catheter hub 14. In some embodiments, in response to the movement of the catheter system 10 from the first position to the second position, the guidewire slider 54 may be configured to push out the flexible arm 44 so that the flexible arm 44 is disengaged from contact with the needle hub 34, and the catheter hub slider 42 slides from the catheter hub slider proximal position to the terminal advance position. In some embodiments, when the catheter system 10 is in the second position, the guidewire slider 54 may be configured to slide back and forth between the proximal and terminal positions of the guidewire slider.
[0027] In some embodiments, the second end 52 of the guidewire 48 may be fixed within the barrel 30. In some embodiments, the second end 52 of the guidewire 48 may be fixed within the needle hub 34. In some embodiments, the guidewire slider 54 may include a U-shaped slot 56 through which it passes. In some embodiments, when the catheter system 10 is in a first position, the guidewire 48 may be positioned in the U-shaped slot 56 in a double-throw configuration so that a 2:1 advance ratio is created between the first end 50 of the guidewire 48 and the guidewire slider 54. In some embodiments, the U-shaped slot 56 is oriented vertically within the barrel 30. In some embodiments, the catheter system 10 may include a support tube 57 which may extend from the needle hub 34 to facilitate support of the guidewire 48.
[0028] In some embodiments, the U-shaped slot 56 may be asymmetrical. For example, as illustrated in Figure 2A, the U-shaped slot 56 may be elongated toward the top of the catheter system 10, which may reduce the overall diameter or size of the barrel 30 for the operator's grasp.
[0029] In some embodiments, the catheter 22 may be configured to move from a second position to a third position, for example, as shown in Figures 4A-4B. In some embodiments, when the catheter system 10 is in the third position, the guidewire slider 54 may be positioned at the terminal position so that the guidewire 48 advances beyond the terminal tip 24 of the catheter 22. In some embodiments, when the catheter system 10 is in the third position, the catheter hub slider 42 may be positioned at the terminal advancement position so that the terminal advancement of the catheter hub slider 42 advances the catheter assembly 12.
[0030] In some embodiments, the terminally advanced position of the catheter hub slider 42 is a partially terminally advanced position. In some embodiments, the safety can 28 may include one or more grooves 58. In some embodiments, the barrel 30 may include internal ridges 60. In some embodiments, the catheter system 10 may be configured to move from a third position to a fourth position, for example, as shown in Figure 5. In some embodiments, when the catheter system 10 is in the fourth position, the guidewire slider 54 may be positioned terminally so that the guidewire 48 advances beyond the terminal tip 24 of the catheter 22. In some embodiments, when the catheter system 10 is in the fourth position, the catheter hub slider 42 may be positioned fully terminally advanced.
[0031] In some embodiments, in response to the movement of the catheter system 10 from a third position to a fourth position, the end extension arm 46 of the catheter hub slider 42 may contact an internal ridge 60 on the inner surface of the barrel 30, disengaging the end extension arm 46 from the groove 58 of the safety can 28, thereby detaching the catheter hub slider 42 from the catheter assembly 12. In some embodiments, the end extension arm 46 may include a hook 62 and an outward extension projection 64. In some embodiments, as the catheter system 10 moves from a third position to a fourth position, the outward extension projection 64 of the catheter hub slider 42 may contact an internal ridge 60 on the inner surface of the barrel 30, disengaging the hook 62 from the groove of the safety can, thereby detaching the catheter hub slider 42 from the catheter assembly 12.
[0032] In some embodiments, the end extension arm 46 may be a first end extension arm. In some embodiments, the catheter hub slider 42 may include a second end extension arm 66 opposite to the first end extension arm. In some embodiments, in response to the movement of the catheter system 10 from a third position to a fourth position, the second end extension arm 66 of the catheter hub slider 42 may contact an internal ridge 60 on the inner surface of the barrel 30, disengaging the second end extension arm 66 from the groove 58 or another groove 59 of the safety can 28, thereby detaching the catheter hub slider 42 from the catheter assembly 12.
[0033] In some embodiments, when the catheter system 10 is in the fourth position, the barrel 30 may be moved to the proximal end relative to the catheter assembly 12, withdrawing the introduction needle 36 from the catheter assembly 12. In some embodiments, in response to the proximal withdrawal of the introduction needle 36 past the needle safety clip 26, the needle safety clip 26 may be detached from the catheter hub 14. In some embodiments, as shown in Figure 6A for example, the needle safety clip 26 may include a V-shaped clip having claws 67 inserted into a groove 70 of the catheter hub 14. In some embodiments, in response to the proximal withdrawal of the introduction needle 36 past the needle safety clip 26, the V-shaped clip may expand without compression by the introduction needle 36, causing the claws 67 to be released from the groove 70, resulting in separation from the catheter hub 14.
[0034] In some embodiments, when the catheter system 10 is in the first, second, third, and fourth positions, the introduction needle 36 may extend through the catheter 22. In some embodiments, as shown in Figure 1B for example, the flexible arm 44 may include a fin 68 that tapers inward toward the terminal direction. In some embodiments, as shown in Figure 5A, in response to the movement of the catheter system 10 from the first position to the second position, the guidewire slider may be configured to push out the fin 68 so that the flexible arm 44 is disengaged from contact with the needle hub 34, and the catheter hub slider 42 slides from the catheter hub slider proximal position to the terminal advance position.
[0035] In some embodiments, the flexible arm 44 may be a first flexible arm and / or the fin 68 may be a first fin. In some embodiments, the catheter hub slider 42 may include a second flexible arm 68 opposite the first flexible arm, as shown, for example, in Figures 1C-1D. In some embodiments, the second flexible arm 69 of the catheter hub slider 42 may include a second fin 71, but may contact the needle hub 34 to prevent the catheter hub slider 42 from sliding from the proximal position to the terminal advancement position, as shown, for example, in Figure 4B. In some embodiments, the hook 62 may be a first hook, and the outward extension projection 64 may include a first outward extension projection. In some embodiments, the second flexible arm 69 may include a second hook and / or a second outward extension projection.
[0036] In some embodiments, in response to the movement of the catheter system 10 from a first position to a second position, the guidewire slider 54 may extend a second flexible arm 69 so that the second flexible arm 69, like the first flexible arm, is disengaged from contact with the needle hub 34, and the catheter hub slider 42 is configured to slide from the catheter hub slider proximal position to the terminal advance position. In some embodiments, the catheter system 10 may include another safety clip 73 located within the safety can 28 and configured to capture the sharp terminal tip 38 of the introduction needle 36 in response to the proximal withdrawal of the introduction needle 36.
[0037] In some embodiments, the proximal end 32 of the barrel 30 may include an opening 74. In some embodiments, the catheter hub slider 42 may be configured to slide within the opening 74 from the proximal catheter hub slider position to the terminal advancement position. In some embodiments, the guidewire slider 54 may be configured to slide within the opening 74 from the guidewire slider proximal position to the terminal position. In some embodiments, the guidewire slider 54 may wrap around the catheter hub slider 42. In some embodiments, the guidewire slider 54 may completely wrap around the catheter hub slider 42. In some embodiments, the proximal end of the catheter hub slider 42 may include a vent plug configured to expel air, which may facilitate the downward or terminal movement of the catheter hub slider 42.
[0038] Referring to Figures 7A-7E, catheter systems 10 according to several embodiments are shown. In some embodiments, the barrel 30 may include a slot 76 located between the terminal end 31 and the proximal end 18 of the barrel 30. In some embodiments, when the catheter system 10 is in a first position, the guidewire slider 54 may extend through the slot 76 and be configured to slide along the slot 76 from the proximal end position to the terminal position to advance the guidewire 48 to the terminal. In some embodiments, when the catheter system is in a second position, the guidewire slider 54 may extend through the slot 76 and be configured to slide along the slot 76 from the terminal end position to the proximal end position of the catheter hub. In some embodiments, the upper surface of the guidewire slider 54 may include an upward extension projection 78, which may facilitate the advancement and / or retraction of the guidewire slider 54 by the operator's fingers. In some embodiments, the proximal end of the catheter hub slider 42 may include a vent plug configured to expel air, which may facilitate the downward or distal movement of the catheter hub slider 42.
[0039] All examples and conditional statements contained herein are for educational purposes only, to help the reader understand the invention and the concepts to which the inventors have contributed to the advancement of the art, and should be interpreted as not being limited to the examples and conditions specifically stated herein. Although embodiments of the present invention have been described in detail, it should be understood that various changes, substitutions, and modifications are possible without departing from the spirit and scope of the invention.
Claims
1. The catheter system A catheter assembly, A catheter hub comprising a terminal end, a proximal end, and a lumen extending through the terminal end and the proximal end of the catheter hub, and A catheter having a terminal tip and extending from the terminal end of the catheter hub, A catheter assembly comprising, A needle safety clip is placed inside a safety can positioned at the proximal end of the catheter hub. A barrel having a terminal end and a base end, The needle hub fixed to the barrel, An introduction needle having a sharp terminal tip and a proximal tip, wherein the proximal tip of the introduction needle is fixed within the needle hub, Catheter hub slider with a flexible arm in the terminal extension arm, A guide wire having a first end and a second end, wherein the first end is configured to advance through the guide needle to the end, Guide wire slider, Equipped with, The catheter system is configured to move from a first position to a second position, and when the catheter system is in the first position, The guide wire slider is positioned at the base end of the guide wire slider and is configured to slide from the base end to the end to advance the guide wire to its end. The catheter hub slider is positioned at the proximal end of the catheter hub slider, The flexible arm of the catheter hub slider contacts the needle hub to prevent the catheter hub slider from sliding from the proximal position to the terminal advancement position. When the catheter system is in the second position, The guidewire slider is positioned at the terminal position so that the guidewire is advanced beyond the terminal tip of the catheter. The catheter hub slider is positioned at the proximal end of the catheter hub slider, The end extension arm of the catheter hub slider is connected to the catheter assembly to prevent end-to-end and proximal-to-end movement of the catheter hub slider relative to the catheter hub. A catheter system in which, in response to the movement of the catheter system from the first position to the second position, the guidewire slider pushes out the flexible arm so that the flexible arm is disengaged from contact with the needle hub, and the catheter hub slider is configured to slide from the proximal position to the terminal advance position.
2. The catheter system according to claim 1, wherein the second end of the guidewire is fixed within the barrel, the guidewire slider has a U-shaped slot through which it passes, and when the catheter system is in the first position, the guidewire is positioned in the U-shaped slot in a double-throw configuration such that there is a 2:1 forward ratio between the first end of the guidewire and the guidewire slider.
3. The catheter system according to claim 2, wherein the U-shaped slot is oriented vertically within the barrel.
4. The catheter system according to claim 3, wherein the U-shaped slot is asymmetrical.
5. The catheter is configured to move from the second position to the third position, and when the catheter system is in the third position, The guidewire slider is positioned at the terminal position so that the guidewire advances beyond the terminal tip of the catheter. The catheter system according to claim 1, wherein the catheter hub slider is positioned at the terminal advancement position, and the advancement of the catheter hub slider to the terminal advances the catheter assembly.
6. The terminal advance position of the catheter hub slider is a partially terminally advanced position, the safety can includes a groove, the barrel further comprises an internal ridge, the catheter system is configured to move from the third position to the fourth position, and when the catheter system is in the fourth position: The guidewire slider is positioned at the terminal position so that the guidewire advances beyond the terminal tip of the catheter. The catheter hub slider is positioned sufficiently distally forward. The catheter system according to claim 5, wherein, in response to the movement of the catheter system from the third position to the fourth position, the end extension arm of the catheter hub slider contacts the internal ridge on the inner surface of the barrel, disengaging the end extension arm from the groove of the safety can, thereby separating the catheter hub slider from the catheter assembly.
7. The catheter system according to claim 6, wherein the terminal extension arm comprises a hook and an outward extension projection, and in response to movement of the catheter system from the third position to the fourth position, the outward extension projection of the catheter hub slider contacts the internal ridge on the inner surface of the barrel, disengaging the hook from the groove of the safety can, thereby detaching the catheter hub slider from the catheter assembly.
8. The catheter system according to claim 7, wherein the end extension arm is a first end extension arm, and the catheter hub slider further comprises a second end extension arm opposite to the first end extension arm, and in response to movement of the catheter system from the third position to the fourth position, the second end extension arm of the catheter hub slider contacts the internal ridge on the inner surface of the barrel, disengaging the second end extension arm from the groove of the safety can, thereby detaching the catheter hub slider from the catheter assembly.
9. The catheter system according to claim 6, wherein when the catheter system is in the fourth position, the barrel is moved to the proximal end with respect to the catheter assembly so that the introduction needle can be withdrawn from the catheter assembly, and in response to the withdrawal of the introduction needle to the proximal end past the needle safety clip, the needle safety clip separates from the catheter hub.
10. The catheter system according to claim 9, wherein the introduction needle extends through the catheter when the catheter system is in the first, second, third, and fourth positions.
11. The catheter system according to claim 1, wherein the flexible arm is provided with a fin tapered inward toward the terminal end, and in response to movement of the catheter system from the first position to the second position, the guidewire slider pushes out the fin so that the flexible arm disengages from contact with the needle hub, and the catheter hub slider is configured to slide from the catheter hub slider proximal end position to the terminal advance position.
12. The catheter system according to claim 1, wherein the flexible arm is a first flexible arm, the catheter hub slider comprises a second flexible arm facing the first flexible arm, the second flexible arm of the catheter hub slider contacts the needle hub to prevent the catheter hub slider from sliding from the proximal position to the terminal advance position, and in response to the movement of the catheter system from the first position to the second position, the guidewire slider pushes out the second flexible arm so that the flexible arm disengages from contact with the needle hub, and the catheter hub slider is configured to slide from the proximal position to the terminal advance position.
13. The catheter system according to claim 1, further comprising another safety clip positioned within the safety can and configured to capture the sharp terminal tip of the introduction needle in response to withdrawal of the introduction needle to its proximal end.
14. The catheter system according to claim 1, wherein the barrel has a slot located between the terminal end and the proximal end of the barrel, and when the catheter system is in a first position, the guidewire slider extends through the slot and slides along the slot from the proximal end position of the guidewire slider to the terminal position to advance the guidewire to its terminal end.
15. The catheter system according to claim 14, wherein when the catheter system is in the second position, the guidewire slider is configured to extend through the slot and slide along the slot from the guidewire slider terminal position to the catheter hub proximal position.
16. The catheter system according to claim 1, wherein the proximal end of the barrel is provided with an opening, the catheter hub slider is configured to slide within the opening from the proximal catheter hub slider position to the terminal advance position, and the guidewire slider is configured to slide within the opening from the proximal end position to the terminal position.
17. The catheter system according to claim 16, wherein the guidewire slider is wrapped around the catheter hub slider.
18. The catheter system according to claim 17, wherein the guidewire slider completely encloses the catheter hub slider.
19. The catheter system according to claim 1, wherein the second end of the guide wire is fixed within the needle hub.
20. The catheter system according to claim 1, wherein when the catheter system is in the second position, the guidewire slider is configured to slide back and forth between the proximal end position and the terminal end position of the guidewire slider.