SK5237Y1 - Catheter needle safety device and intravenous catheter apparatus - Google Patents

Abstract

A needle safety device <B>40</B> for an intravenous catheter apparatus that includes a base <B>42</B> capable of receiving a needle <B>20</B> between opposing jaws <B>48</B> attached to the base and capable of being influenced by the needle <B>20</B>. The jaws have a link <B>49</B> connecting the jaws arranged a distance from the base <B>42</B>. The jaws may move between an expanded position in which they interact with an obstruction within a wing housing of the intravenous catheter apparatus. The jaws <B>48</B> permit relative movement of the needle <B>20</B> with the base when expanded, close around a needle tip as it passes the jaws, and prevent relative movement of the needle <B>20</B> with the base when the jaws are collapsed. The needle <B>20</B> of the intravenous catheter apparatus may then be safely disposed with the needle tip within the needle safety device.

Description

Technical field

This technical solution relates to the protection of the needle tip of an intravenous (IV) catheter. In particular, the technical solution relates to a needle safety device that automatically covers the needle during its withdrawal from the patient to prevent accidental contact with healthcare professionals.

BACKGROUND OF THE INVENTION

Healthcare workers face a number of risks when they provide care to their patients. One of the serious risks is accidental needle pricking after removal from the intravenous catheter. Accidental pricking of the needle into the skin of healthcare professionals is particularly dangerous because the tip of the needle easily penetrates the latex gloves used by healthcare professionals. Concern for accidental puncture is of particular importance in this period of blood-borne diseases such as hepatitis or AIDS. Previous needle tip protections have been made to recognize the need to cover the needle tip when withdrawing from the catheter. The prior art recognizes that needle tip protection is applied to the needle after the needle has been withdrawn from the catheter; however, the prior art is difficult to assemble, utilizes a clumsy conical wing casing, which is required to be wider than necessary, utilizes complicated constructions, and has other disadvantages. These disadvantages will become apparent from the review of U.S. Pat. No. 5,135,504 to McLees and U.S. Pat. 6,117,108 for Woehra.

The essence of the technical solution

Therefore, the main object of the invention is to provide a needle safety device in which the disadvantages of the prior art are overcome.

It is a further object of the present invention to provide an intravenous catheter apparatus in which a cylindrical non-conical wing-shaped casing is used which reduces the overall size of the intravenous catheter apparatus.

Yet another object of the present invention is to provide a needle safety device that is simplified in shape and therefore less expensive to manufacture and use.

Therefore, the above objects, other objects as well as a number of advantages of the present invention are set forth in the following description.

The above objects are met by the content of the independent claims.

The needle safety device according to the invention comprises a base capable of receiving the needle and two opposing jaws attached to the base capable of being influenced by the needle. The two opposing jaws together form the back clamp mechanism. The jaws are movable between an extended position with an effective outer diameter of the jaws enlarged when the needle is between the jaws and a retracted position when the needle is not within the jaws. The jaws of the safety device allow relative movement of the needle with the base when the jaws are dilated. The jaws close around the tip of the needle as the needle moves through the space between the jaws. The jaws prevent the relative movement of the needle with the base when the jaws are lowered.

The needle safety device can be used with an intravenous catheter device having a flexible catheter attached to the wing pouch. An intravenous catheter device has an internal obstruction in the wing casing. The needle-tipped needle is secured in a flexible catheter in the aileron housing. The jaws of the needle safety device as discussed above are movable between an expandable position where the jaws are movable outward by the needle and are prevented from moving behind an internal obstacle in the folded state when the jaws close around the tip of the needle, allowing the needle safety device has moved behind the obstacle as it surrounds the tip of the needle.

According to a further feature of the present invention, the needle safety device has an access portion adapted to allow movement of the needle safety device over an obstacle in the intravenous catheter device when in the extended position for mounting. The obstacle is the most typical annular ring in the wing casing.

According to another feature of the present invention, the jaws have a side perpendicular to the cylindrical side of the aileron housing that prevents movement beyond the obstruction of the intravenous catheter device when the needle safety device is in the extended position.

According to a further feature of the present invention, the jaws are connected to each other by at least one joint at a certain distance from the base. At least one joint prevents the two jaws from spreading too far apart, which could lead to permanent damage to the needle safety device. The joint may be provided on only one side of the jaws. Alternatively, the first and second joints may be provided on opposite sides of the jaws. Preferably, the at least one joint is shaped to have resilient properties such that the jaws can extend from

SK 5237 Υ1 against the restoring force of the joint. The joint is designed to retain its elastic properties during the shelf life. E.g. the joint may have a curved shape, such as an S or Z shape. Alternatively, the joint may have a substantially straight shape. In order to facilitate simplified and cost-effective production of the needle safety device, the jaw base and preferably at least one joint can be formed in one piece and preferably made of a plastic material, for example by injection molding. Alternatively, the jaw base and preferably also the at least one joint can be made of a metallic material.

According to another feature of the present invention, the needle safety device is capable of accommodating gauge needles from 14 to 18.

According to another feature of the present invention, the needle safety device is capable of accommodating gauge needles of 18-24.

According to a further feature of the present invention, the intravenous catheter apparatus has a cylindrical wing-shaped housing. The needle safety device fits effectively onto the cylindrical wing.

According to another feature of the present invention, the needle safety device is held in place within the needle head chamber.

According to yet another feature of the present invention, the needle safety device is disposed with the needle safety device abutting the base of the catheter.

Preferred embodiments of the invention are described in the following description and in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a top view of an intravenous catheter apparatus.

Figure 2 is a cross-sectional view of the apparatus of Figure 1 taken along line 2-2.

Figure 3 is an enlarged view of section 3 of Figure 2.

Figure 3A is an alternative form of the needle safety device of Figure 3.

Figure 4 is a top view of an intravenous catheter apparatus with a needle partially withdrawn with a catheter and a wing-like sheath.

Figure 5 is a side sectional view of Figure 4 taken along line 5-5.

Figure 6 is a top view of an intravenous catheter apparatus with the needle withdrawn from the catheter and the needle away from the jaws of the needle safety device.

Figure 7 is a side section along line 7-7 of Figure 6.

Figure 8 is an enlarged view of section 8 of Figure 7.

Figure 8A is an alternative form of the needle safety device of Figure 8.

Figure 9 is an enlarged cross-sectional view of an alternative form of needle safety device having a funnel-extended needle and a tension ring with jaws in the open position.

Figure 10 is the needle safety device of Figure 9 with the jaws in the closed position.

Figure 11 is a top view of an intravenous catheter apparatus with a needle withdrawn from the catheter and the aileron capsule.

Figure 12 is a side sectional view taken along line 9-9 of Figure 10.

Figure 13 is the needle safety device of Figure 8 with a junction connecting the jaws.

Figure 13A is the needle safety device of Figure 8A with a junction connecting the jaws.

Examples of technical solution

Referring to Figure 1, an intravenous (IV) catheter apparatus 10 according to the present invention is shown. The IV catheter apparatus is considered to be a finished product prior to use and comprises a needle cover 12, a wing sleeve 14, an inlet cap 14 in a unitary assembly with the wing sleeve 14, and a needle head 18 attached to the wing sleeve 14.

As seen in the cross-section shown in Figure 2, the needle 20 protrudes from the needle head 18 through the wing sleeve and ends at the needle tip 22 under the needle cover 12.

The needle 20 is hollow and the needle tip 22 is typically cut diagonally. When the needle tip 22 is inserted into the patient, the needle may encounter fluid pressure that passes from the needle tip 22 through the needle 20 and enters the backflow chamber 24.

The needle is surrounded by a catheter 26, which is attached to the wing sleeve 14 by the catheter base 28. Catheter 26 is a flexible tubing that remains in the user to provide fluid, nutrition, or medication.

Figure 3 is an enlarged view of the needle safety device 40 of Figure 2. The needle head 18 has an abutment chamber 30 that is used to hold the needle safety device 40 in position within the aileron housing 14. The aileron housing 14 has a aileron housing chamber 32 into which it. the needle safety device is placed. Within the wing-chamber chamber 32, there is an obstacle 34 that interacts with

SK 5237 Υ1 needle safety device 40. In the illustrated embodiment, the hindrance 34 is an annular ring.

The catheter base extends into the wing holster and abuts the needle safety device 40. As shown, the needle safety device 40 is securely held in place in the abutment chamber 30 and the base 28 of the catheter.

The needle safety device 40 has a base 42 having a needle channel 44 therein. The needle safety device 40 also has a back clamp 46 that is used to extend to abut the obstacle 34 and to retract to avoid the obstacle 34.

The return clamp has two jaws 48 movable between an extended position with an effective outer diameter of the jaws enlarged when the needle 20 is between the jaws 48. The jaws move from the extended position to the stowed position when the needle 20 is no longer between the jaws 48. The jaws 48 interact with an obstacle 34 to allow relative movement of the needle 20 in the base 42 of the needle safety device 40. The jaws 48 allow this relative movement when in the extended position, as seen in the successive movement between Figures 2, 5, 7 and 10.

When the needle 20 passes beyond the jaws 48, the jaws close around the needle tip 22, preventing accidental contact of the healthcare professional with the needle tip 22. The jaws 48, when closed around the tip of the needle, prevent the relative movement of the needle 20 in the base 42 of the needle safety device 40 because the jaws 48 slide beyond the obstacle 34 without the obstacle 34 pulling the needle safety device 40. The needle safety device 40 is required to hold the obstacle in place so that the needle 20 moves relative to the needle safety device 40. The channel 44 of the needle safety device 40 has a friction coefficient that holds the needle 20 when the needle safety device 40 is not held in place by the obstacle 34.

As seen in the enlarged figures 3, 3A, 8 and 8A, the jaws 48 have a ramp 50. During assembly, the needle safety device 40 is typically placed on the needle 20 at the end attached to the needle head 18 and then at the end attached to the needle head 18. The needle safety device 40 is thus expanded before being placed in the wing housing 14. As the needle is inserted into the catheter, the needle safety device 40 slides into the wing housing and encounters an obstacle 34. The ramp 50 gradually passes over the obstacle 34 and then engages the an obstacle to give the installer a reliable feel. The side 52 opposite the ramp 50 prevents the needle safety device 40 from returning when it is already in place behind the obstacle 34.

The jaws 48 are connected to one another by a joint 49 (Figures 13 and 13A) in the region between the base 42 and the ramp 50. The joint can only be secured on one side of the jaws 48. Alternatively, the first and second joints can be provided on opposite sides of the jaws 48. is formed so that it has resilient properties such that the jaws 48 can extend apart from the restoring force of the joint. For example, the joint may have a curved shape such as an S or Z shape. Alternatively, the joint may have a substantially straight shape.

The base 42 of the jaws 48 and preferably also the at least one joint can be formed in one piece and preferably made of a plastic material, for example by injection molding. Alternatively, the base 42 of the jaws 48 and preferably also the at least one joint may be made of a metallic material.

A return cone 54 is provided on the jaws 48. This return cone 54 fits into the needle tip 22, allowing the needle tip 22 to move beyond the return cone 54. As can be seen from the comparison of Figures 3 and 3A, the return cone 54 can be on one or the other. on both jaws.

As seen in Figures 9 and 10, the needle safety device 40 may utilize a funnel-extended needle 23 and a tension ring 53 to keep the needle safety device 40 in a secure connection with the needle tip 22. The needle 20 has a funnel-like extension located near its tip 22 so that at this particular point its effective diameter increases. The funnel-like extension 23 is formed during assembly after the needle safety device 40 has been placed on the needle 20 which is attached to the needle head 18. The funnel-like extension 23 ensures that the needle safety device 40 does not retract when the needle tip 22 is stuck in the needle safety device 40. In addition, a tension ring 53 has been provided on the jaw that makes the jaw tilting reliable as the needle tip 22 moves beyond the front of the jaws 48 after the needle 20 has been withdrawn after use with the catheter 26.

In use, a healthcare professional receives an intravenous (IV) catheter device with a needle guard 12 as shown in Figures 1 and 2, the needle 20 and the catheter 26 being inserted into the patient's vein. As can be seen in Figures 4 and 5, the needle is then withdrawn from the patient by gripping the wing sleeve 14 and pulling on the needle head 18. The needle 20 is advanced through the catheter 26 and the needle safety device 40.

The needle tip 22 extends through the jaws 48, allowing the jaws to fold to their natural position. Alternatively, the tension ring 53 on the jaws 48 makes the jaws 48 fold reliable. In the natural position of the jaws, they are allowed to pass through the obstacle 34 in the wing housing 14. Alternatively, the needle safety device 40, as shown in Figures 8 and 8A, may still slightly touch the obstacle 34; however, the jaws 48, made of a resilient material and an unrestricted metal injection 22, are allowed to bend to pass the obstacle 34. In this scenario, the needle channel 44 in the base 42 grips the needle 20 sufficiently to allow the jaws 48 to pass the obstacle 34. 23 as shown in Figure 9 does not pass through the needle channel 44, allowing the jaws 48 to cross the obstacle 34.

SK 5237 Υ1

As shown in Figures 9 and 10, the healthcare professional will then completely move the needle safety device 40 beyond the wing casing 40 for disposal. The device protects the healthcare professional from accidentally pricking the needle tip 22.

The needle safety device 40 remains in its assembled position, as shown in Figure 1, without affecting the operation and operation of the IV catheter apparatus 10 by letting the shaped rear portion of the base 42 abut the chamber 30 abutting the needle head. By means of the base portion 42 in the adjacent chamber 30, the jaws are secured to always be in a plane parallel to the needle 20 so that the needle 20 can properly move between the jaws 38 and ensure the proper functioning of the needle safety device 40.

The needle tip 22, while already in the needle safety device, will not come out even if it is pressed against the healthcare professional, work surface, or other object. Once the needle safety device 40 is in place, the needle 20 is safe to dispose.

Claims (31)

PROTECTION REQUIREMENTS A needle safety device (40) for an intravenous catheter apparatus, comprising: a base (42) configured to receive a needle (20); two opposing jaws (48) attached to the base (42) and are capable of being influenced by the needle (20); the jaws (48) arranged to move between an extended position with an effective outer diameter of the jaws (48) enlarged when the needle (20) is between the jaws (48) and the stowed position when the needle (20) is not between the jaws (48); the jaws (48) in the extended position for relative movement of the needle (20) with respect to the base (42), or closing the needle tip (22) to prevent relative movement of the needle (20) with respect to the base in the collapsed position, the two opposing jaws (48) are connected to each other by at least one joint (49) at a specified distance from the base (42). Needle safety device (40) according to claim 1, characterized in that the joint (49) is formed on only one side of the jaws (48). Needle safety device (40) according to claim 1, characterized in that the first and second joints (49) are formed on opposite sides of the jaws (48). Needle safety device (40) according to any one of the preceding claims, characterized in that one or each joint (49) has resilient properties. Needle safety device (40) according to claim 4, characterized in that the jaws (48) are spaced apart from each other against the restoring force of the joint (49). Needle safety device (40) according to any one of the preceding claims, characterized in that one or each connection (49) has a curved shape or a straight shape. Needle safety device (40) according to any one of the preceding claims, characterized in that one or each joint (49) has an S or Z shape. Needle safety device (40) according to any one of the preceding claims, characterized in that the jaws (49) are provided with an access part (50) for moving the intravenous catheter device (10) beyond the obstacle (34) when mounted in an extended position. Needle safety device (40) according to claim 6, characterized in that one or each joint (49) is formed in the region between the base (42) and the access part (50), Needle safety device (40) according to any one of the preceding claims, characterized in that the jaws (48) have a side to prevent movement beyond the obstruction (34) of the intravenous catheter device (10) when the jaws (48) are in the extended position. Needle safety device (40) according to any one of the preceding claims, characterized in that the base (42) is adapted to receive a gauge needle (20) between 14 and 18. Needle safety device (40) according to any one of claims 1 to 8, characterized in that the base (42) is adapted to receive a gauge needle (20) between 18 and 24. Needle safety device (40) according to any one of the preceding claims, characterized in that the jaws (48) are provided with a back cone forming barriers to prevent movement of the needle tip (22) as the jaw (48) moves to the stowed position. Needle safety device (40) according to any one of the preceding claims, characterized in that the jaws (48) are provided with a jaw-tightening ring (53). An intravenous catheter device (10), comprising: a flexible catheter (26) attached to the wing of the housing (14); an internal obstacle (34) in the aileron housing (14); a needle (20) in the resilient catheter (26) and in the aileron housing (14); a needle safety device (40) provided with a base (42) and jaws (48) arranged to pass the needle (20) therebetween, wherein the jaws of the needle safety device (40) are movably arranged between an extended position in which the jaws ( 48) movable outwardly by the needle (20) and prevented from moving beyond the inner obstacle (34) and the stowed position in which the jaws (48) are closed around the needle tip (22) allowing the needle safety device (40) to pass through as an obstacle (34), SK 5237 pričom1 wherein it embraces the needle tip (22), characterized in that the two jaws (48) are connected to each other by at least one joint (49) at a predetermined distance from the base (42). An intravenous catheter device (10) according to claim 13, characterized in that the joint (49) is formed on only one side of the jaws (48). An intravenous catheter device (10) according to claim 13, characterized in that the first and second connections (49) are formed on opposite sides of the jaws (48). An intravenous catheter device (10) according to any one of claims 13 to 15, characterized in that one or each joint (49) has resilient properties. An intravenous catheter device (10) according to claim 16, characterized in that the jaws (48) are spaced apart from each other by the joint force (49). An intravenous catheter device (10) according to any one of claims 13 to 16, characterized in that one or each joint (49) has a curved shape or a straight shape. An intravenous catheter device (10) according to claim 10, characterized in that one or each joint (49) has an S or Z shape. An intravenous catheter device (10) according to any one of claims 13 to 17, characterized in that the jaws (48) are provided with an access portion (50) for moving the needle safety device (40) beyond the obstacle (34). ) during assembly. An intravenous catheter device (10) according to any one of claims 13 to 18, characterized in that one or each joint (49) is formed in the region between the base (42) and the access portion (50). An intravenous catheter device (10) according to any one of claims 13 to 19, characterized in that at least one jaw (48) has a side to prevent movement of the needle safety device (40) beyond the obstruction (34), when the jaws (48) are spaced apart. An intravenous catheter device (10) according to any one of claims 13 to 20, characterized in that at least one jaw (48) is provided with a back cone to form a barrier to prevent accidental movement of the needle tip (22) outwards. from the needle safety device (40). An intravenous catheter device (10) according to any one of claims 13 to 21, characterized in that the jaws (48) are provided with a tension ring (53) closing the jaws (48). An intravenous catheter device (10) according to any one of claims 13 to 22, further comprising a needle head (18) attached to the needle (20), an adjacent chamber (30) in the head (18). 1), a needle safety device base (42) abutting an adjacent chamber (30) for aligning the needle safety device (40) with the needle (20). An intravenous catheter device (10) according to any one of claims 13 to 23, further comprising a catheter base (28) in the aileron sheath (14), a jaw (48) of the needle safety device adjacent to it. a catheter base (28) for securing the needle safety device (40) as it moves within the wing housing (14). An intravenous catheter device (10) according to any one of claims 13 to 24, characterized in that the obstruction (34) is an annular ring. Intravenous catheter apparatus (10) according to any one of claims 13 to 25, characterized in that the aileron housing (14) is provided with a cylindrical tube for movement of the needle (20) and a needle safety device (40). An intravenous catheter device (10) according to any one of claims 13 to 26, characterized in that the needle (20) has a funnel-shaped tip (22).