RU77545U1 - SAFETY DEVICE FOR THE NEEDLE OF THE DEVICE FOR THE INTRAVENOUS CATHETER AND THE DEVICE OF THE INTRAVENOUS CATHETER - Google Patents

Abstract

The safety device for the needle of the intravenous catheter device, which contains a support part capable of placing the needle between opposing clamps connected to the support part and capable of being exposed to the needle. The clamps move between the extended position in which they interact with an obstacle inside the vane housing of the intravenous catheter device. The clamps allow the needle to move relative to the support part in an extended position, close near the tip of the needle when the needle passes the clamps, and prevent the needle from moving relative to the support part when the clamps are compressed. Then, the needle of the intravenous catheter device can be safely disposed of with the tip of the needle inside the needle safety device.

Description

This utility model relates to a protective element for the needle tip of an intravenous (IV) catheter. In particular, the utility model relates to a needle safety device that automatically closes the needle during removal from the patient to prevent accidental contact with medical personnel.

Health care providers face many occupational hazards in patient care. One serious danger is the accidental injection of a needle after it is removed from an intravenous catheter. Accidental pricking of a medical worker’s skin with a needle is especially dangerous due to the fact that the needle tip easily pierces the latex gloves used by medical personnel. The danger of an accidental injection is of particular concern at present for the spread of blood-borne diseases such as hepatitis or AIDS. Previously, elements of protection against the tip of the needle were produced, which indicates the need for covering the tip of the needle during removal from the catheter. In known technical devices, it is customary to install a needle tip protector on the needle after the needle is removed from the catheter; however, the known technical devices are difficult to assemble, use an inconvenient cone-shaped wing body, which requires the known devices to be wider than necessary, use complex designs and have other disadvantages. Mentioned

the disadvantages are obvious from the analysis of US patent No. 5,135,504 inventor McLees (McLees) and US patent No. 6,117,108 inventor Vauner (Woehr).

Therefore, the main objective of the present invention is to provide a safety device for the needle, which eliminates the disadvantages of the known technical devices.

An additional objective of the present invention is to provide an intravenous catheter device in which a cylindrical vane housing of constant cross section is used, which reduces the overall size of the intravenous catheter device.

Another objective of the present invention is to provide a safety device for the needle, which has a simplified shape and therefore cheaper in production and use.

Therefore, the above objectives, other objectives, as well as the numerous advantages of the present invention are set forth in the following description.

The above goals are achieved through the object of independent claims.

The safety device for the needle in accordance with the utility model includes a support part for accommodating the needle, and two opposite clamps connected to the support part and capable of responding to the action of the needle. Two opposite clamps together form a reverse collet mechanism. The clamps can move between the extended position with the increased effective outside diameter of the clamps when the needle is between the clamps and the compressed position when the needle is not

between the clamps. The clamps of the needle guard allow the needle to move relative to the support portion when the clamps are apart. The clamps close near the tip of the needle when the needle slides in the space between the clamps. The clamps prevent the needle from moving relative to the support portion when the clamps are compressed.

The needle safety device can be used in an intravenous catheter device that includes a flexible catheter connected to the wing body. The intravenous catheter device contains an internal obstruction in the vane housing. A needle with a needle tip is provided inside a flexible catheter in a vane housing. The clamps on the needle safety device, as described above, can move between an extended position in which the clips are moved apart by the needle outward and locked against passage by an internal obstacle, and a compressed position in which the clips are closed near the needle tip and which allows the needle safety device walk past obstacles with the needle tip fully closed.

According to another feature of the present utility model, the needle safety device comprises an inclined portion configured to allow the needle safety device in an extended position to pass past an obstruction in the intravenous catheter assembly. In the most general case, the obstacle is an annular protrusion within the winged housing.

According to another feature of the present utility model, the clamps have a lateral surface perpendicular to the cylindrical surface of the wing body, which prevents the intravenous catheter device from passing past the obstacle when the needle safety device is in the extended position.

In accordance with another feature of the present utility model, the clamps are interconnected by at least one link at a distance from the supporting part. At least one link prevents the two clamps from being pulled too far apart, which could seriously damage the needle guard. A link can only be provided on one side of the clamps. Alternatively, the first and second links may be provided on opposite sides of the clamps. In a preferred embodiment, at least one link is formed with the possibility of imparting spring properties to it, so that the clamps can be extended against the action of the return force of the link. The link is designed to maintain its spring properties during the shelf life. For example, the link may have a curved shape, for example, S- or Z-shaped. Alternatively, the link may have a substantially rectilinear shape. In order to provide a simpler and cheaper manufacture of a safety device for a needle, the support part, the clamps and, preferably, also at least one link can be formed integrally and, preferably, are made of plastic material, for example, by injection molding. Alternatively, the support part, the clamps and,

preferably, at least one link may also be made of metallic material.

According to another feature of the present utility model, the needle safety device is capable of accommodating needles numbered 14 to 18.

According to another feature of the present utility model, the needle safety device is capable of accommodating needles numbered 18 to 24.

In accordance with another feature of the present utility model, the intravenous catheter device has a cylindrical wing body. The needle safety device is effectively installed inside the cylindrical wing housing.

According to another feature of the present utility model, the needle safety device is fixed in the bore of the needle sleeve.

In accordance with another feature of the present utility model, a needle safety device is mounted with the stop of a needle safety device in the catheter support.

Preferred embodiments of the utility model are explained in the following description and in the accompanying drawings.

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

Figure 2 is a cross section of the device shown in figure 1, along the line 2-2.

Figure 3 is an enlarged view of section 3 in cross section shown in figure 2.

Figure 3A is an alternative embodiment of the safety device for the needle shown in figure 3.

Figure 4 is a top view of the device of an intravenous catheter with a needle partially removed from the catheter and the vane housing.

Figure 5 is a side view in section along the line 5-5, in figure 4.

Figure 6 is a top view of an intravenous catheter device with a needle extended from the catheter and a needle brought out of position between the clamps of the needle safety device.

Figure 7 is a side view in section along the line 7-7 in figure 6.

Figure 8 is an enlarged view of a section 8 in cross section shown in figure 7.

Figure 8A is an alternative embodiment of a needle safety device shown in Figure 8.

Figure 9 is an enlarged sectional view of an alternative embodiment of a needle safety device comprising an expanded needle and a tension ring with clamps in the open position.

Figure 10 - safety device for the needle shown in figure 9, with the clamps in the closed position.

Figure 11 is a top view of the device of an intravenous catheter with a needle elongated from the catheter and the wing body.

Figure 12 is a side view in section along the line 9-9, in figure 10.

Figure 13 is a safety device for the needle shown in figure 8, with the link connecting the clamps.

Figure 13A is a needle safety device shown in Figure 8A with a link connecting the clamps.

The figure 1 presents the device 10 intravenous (IV)

catheters in accordance with this technical solution. The IV-catheter device is shown as a finished product before use and contains a needle cap 12, an impeller body 14, a port cap 16 in an autonomous assembly with an impeller body 14, and a needle hub 18 connected to the impeller body 14.

As can be seen in the cross section in figure 2, the needle 20 extends from the sleeve 18 of the needle through the wing housing and ends with the tip 22 of the needle under the cap 12 of the needle.

The needle 20 is hollow, and the tip of the needle 22 typically has an oblique cut. When the needle tip 22 is inserted into the patient, the needle may encounter fluid pressure that passes through the needle tip 22 through needle 20 and enters the expansion chamber 24.

The needle is surrounded by a catheter 26, which is connected to the wing body 14 by means of a support part 28 of the catheter. The catheter 26 is a flexible tube that must remain in the user to ensure the supply of fluids, nutrients or drugs.

Figure 3 shows an enlarged image of the needle safety device 40 shown in Figure 2. The needle sleeve 18 comprises a docking bore 30 that serves to secure the needle safety device 40 in a predetermined position within the wing housing 14. The wing housing 14 comprises a wing housing 32 in which the safety device for the needle is located. In the chamber 32 of the wing housing there is an obstacle 34, which interacts with the safety device 40 for the needle. In the embodiment shown, obstacle 34 is

ring-shaped protrusion.

The catheter support piece extends into the wing housing and abuts against the needle safety device 40. As shown, the needle safety device 40 is securely locked in place at the docking bore 30 and catheter abutment 28.

The safety device 40 for the needle contains a support portion 42, inside which there is a channel 44 for the needle. The safety device 40 for the needle also contains a reverse collet 46, which serves to expand to rest against the obstacle 34, and for compression to bypass the obstacle 34.

The reversing collet contains two clamps 48, capable of moving between the extended position with an effective outer diameter of the clamps increased when the needle 20 is between the clamps 48. The clamps move from the extended position to the compressed position when the needle 20 is no longer between the clamps 48. Clips 48 interact with an obstacle 34 to allow the needle 20 to move relative to the supporting part 4 2 of the needle safety device 40. Clips 48 allow said relative movement when in the extended position, as seen in sequential viewing of figures 2, 5, 7 and 10.

When the needle 20 extends beyond the clamps 48, the clamps are closed around the tip of the needle 22 and, thereby, prevent accidental contact of the medical professional with the tip of the needle 22. Clips 48, when closed around the tip of the needle, block the movement of the needle 20

relative to the supporting portion 42 of the needle safety device 40, because the clamps 48 pass past the obstacle 34 without tensioning the obstacle 34 on the needle safety device 40. The needle safety device 40 must be held in place by an obstacle so that the needle 20 moves relative to the needle safety device 40. The channel 44 for the needle in the safety device 40 for the needle has a coefficient of friction, which ensures the capture of the needle 20, when the safety device 40 for the needle is not held in place by an obstacle 34.

As can be seen from the enlarged images in figures 3, 3, 8, and 8A, the clamps 48 have a slope of 50. During assembly, the needle safety device 40 is usually mounted on the needle 20 at the end attached to the needle sleeve 18, and then the end is fixed to the sleeve 18 needles. Thus, the needle guard 40 is spread apart before being inserted into the vane housing 14. When the needle is inserted into the catheter, the needle guard 40 is inserted into the wing housing until it collides with the obstacle 34. The inclination 50 gradually moves past the obstacle 34 and then is set through the obstacle, providing a tactile signal clearly defined by the collector. The side 52 opposite to the tilt 50 prevents the needle safety device 40 from moving backwards after being installed in place behind the obstruction 34.

The clips 48 are interconnected by at least one link 49 (figures 13 and 13A) in the region between the support portion 42 and the tilt 50. The link can only be provided on one side

clamps 48. Alternatively, the first and second links may be provided on opposite sides of the clamps 48. At least one link is formed so as to have spring properties, so that the clamps 48 can be pulled apart against the action of the return force of the link. For example, the link may have a curved shape, for example, S- or Z-shaped. Alternatively, the link may have a substantially rectilinear shape.

The support portion 42, the clamps 48 and, preferably, also at least one link can be formed integrally and, preferably, are made of plastic material, for example, by injection molding. Alternatively, the support portion 42, the clamps 48, and preferably also at least one link may be made of metal material.

A return cone 54 is provided at the clamps 48. This return cone 54 hooks the needle tip 22 and thereby prevents the needle tip 22 from passing past 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 both clamps 48.

As can be seen in figures 9 and 10, in the needle safety device 40, an extended needle 23 and a tension ring 53 can be used to hold the needle safety device 40 in a safety connection with the needle tip 22. The needle 20 has an extension located near the tip 22 of the needle, so that the effective diameter of the needle increases near this particular point. Extension 23 is created during assembly after the needle guard 40 is mounted on

a needle 20 that is attached to the sleeve 18 of the needle. Extension 23 provides an obstacle to retract the needle guard 40 after the needle tip 22 is enclosed in the needle guard 40. In addition, a clamp ring 53 is provided on the clamps, which will force the clamps to compress as soon as the needle tip 22 extends beyond the front of the clamps 48 when the needle 20 is removed from the catheter 26 after application.

In use, the healthcare provider receives an intravenous (IV) catheter device with a needle cap 12 in the form shown in Figures 1 and 2, and the needle 20 and catheter 26 are inserted into a patient's vein. As shown in figures 4 and 5, then the needle is removed from the patient by gripping the wing body 14 and pulling the needle sleeve 18. The needle 20 slides through the catheter 26 and the needle guard 40.

The tip of the needle 22 passes the clamps 48, which allows the clamps to compress in their natural position. Alternatively, the tension ring 53 on the clamps 48 forces the clamps 48 to be compressed. In the natural position of the clamps, they can pass past an obstacle 34 in the wing housing 14. Alternatively, the needle guard 40, as shown in Figures 8 and 8A, may loosely contact with an obstacle 34; however, the clamps 48, made of flexible material and no longer held back by the metal needle 22 of the syringe, are able to bend slightly to pass the obstacle 34. In this scenario, the needle channel 44 in the support portion 42 grips the needle 20 reliably enough for the clamps 48 to pass by obstacles

34. Alternatively, the extension 23 shown in FIG. 9 does not extend inside the needle channel 44, but allows the clips 48 to pass past the obstacle 34.

As shown in figures 9 and 10, then the medical professional completely removes the safety device 40 for the needle from the vane housing 14 for elimination. The device protects the medical worker from accidental injection with the tip of 22 needles.

The safety device 40 for the needle remains in its assembled position, shown in figure 1, without affecting the operation and operation of the device 10 IV-catheter, due to the fact that the profiled rear portion of the support portion 42 is seated in the docking bore 30 of the needle sleeve. When the support portion 42 is located in the docking bore 30, the clamps are always guaranteed to be located in a plane parallel to the needle 20, so that the needle 20 can properly move between the clamps 48 and ensure the proper functioning of the needle guard 40.

After entering the safety device 40 for the needle, the tip of the needle 22 does not go outside, even in the case of pressing against a medical professional, work surface or other object. After the needle guard 40 is in place, the needle 20 can be safely disposed of.

Claims (27)

1. A needle safety device for an intravenous catheter device, wherein the needle safety device comprises supporting part for placing the needle; two opposite clamps connected to the support part and interconnected by at least one link at a distance from the support part, while the needle is able to act on the clamps; moreover, the clamps are movable between an extended position with a larger, effective outer diameter of the clamps when the needle passes through the clamps and a compressed position when the needle does not pass through the clamps; the clamps allow the needle to move relative to the support part when the clamps are apart, and close near the tip of the needle and prevent the needle from moving relative to the support part when compressed. 2. The safety device for the needle according to claim 1, in which the link is provided only on one side of the clamps. 3. The safety device for the needle according to claim 1, in which the first and second links are provided on opposite sides of the clamps. 4. The safety device for the needle according to claim 1, in which one or each link is formed with the presence of spring properties, with the possibility of separation of the clamps against the return force of the link. 5. The safety device for the needle according to claim 1, in which one or each link has a curved shape, for example an S-or Z-shaped, or essentially rectilinear shape. 6. The safety device for the needle according to claim 1, in which the clamps have an inclined portion that allows passing by an obstacle in the intravenous catheter device when the clamps are in the extended position, for assembly. 7. The safety device for the needle according to claim 6, in which one or each link is provided in the area between the supporting part and the inclined section. 8. The safety device for a needle according to claim 1, in which the clamps have a lateral surface configured to prevent an intravenous catheter device from passing past an obstacle when the clamps are in an extended position. 9. The safety device for the needle according to claim 1, in which the supporting section accommodates needles with numbers from 14 to 18. 10. The safety device for the needle according to claim 1, in which the supporting section accommodates needles with numbers from 18 to 24. 11. The safety device for the needle according to claim 1, in which the clamps have a reverse cone, configured to create a barrier against the movement of the tip of the needle after the clamps are moved to a compressed position. 12. The safety device for the needle according to any one of the preceding paragraphs, in which the clamps contain a tension ring forcing the clamps. 13. An intravenous catheter device comprising flexible catheter connected to the wing body; internal obstacle in the wing housing; a needle inside a flexible catheter and winged body; a needle safety device comprising a support portion and clamps through which the needle passes, the clamps are interconnected by at least one link at a distance from the support portion, and the clips are movable on the needle safety device between the apart position, in which the clamps are pushed outward by the needle and blocked from passing by an internal obstacle, and in a compressed position in which the clamps are closed near the tip of the needle, which allows the needle safety device to pass It is past obstacles while fully closed needlepoint. 14. The intravenous catheter device of claim 13, wherein the link is provided on only one side of the clamps. 15. The intravenous catheter device according to item 13, in which the first and second links are provided on opposite sides of the clamps. 16. The intravenous catheter device according to item 13, in which one or each link is formed with the presence of spring properties, with the possibility of breeding clamps against the return force of the link. 17. The intravenous catheter device according to item 13, in which one or each link has a curved shape, for example an S-or Z-shaped, or essentially rectilinear shape. 18. The intravenous catheter device of claim 13, wherein the clamps have an inclined portion allowing the needle safety device to pass past an obstacle during assembly. 19. The intravenous catheter device of claim 18, wherein one or each link is provided in an area between the support portion and the inclined portion. 20. The intravenous catheter device of claim 13, wherein the at least one clamp has a lateral surface that prevents the needle safety device from passing past an obstacle when the clamps are apart. 21. The intravenous catheter device of claim 13, wherein the at least one clamp has an inverse cone to create a barrier to prevent accidental exit of the needle tip from the needle safety device. 22. The intravenous catheter device according to any one of paragraphs.13-21, in which the clamps contain a tension ring, forcefully compressing the clamps. 23. The intravenous catheter device of claim 13, further comprising a needle sleeve connected to the needle, a docking bore in the sleeve, wherein the support portion of the needle safety device is mounted in the docking hole to align the needle safety device with the needle. 24. The intravenous catheter device of claim 13, further comprising a catheter support member inside the wing housing, wherein the clamps of the needle safety device abut against the support part of the catheter to block the needle safety device from moving inside the wing housing. 25. The intravenous catheter device of claim 13, wherein the obstruction is an annular protrusion. 26. The intravenous catheter device of claim 13, wherein the vane housing comprises an approximately cylindrical tube in which the needle and needle safety device are moved. 27. The intravenous catheter device of claim 13, wherein the needle has an expanded tip.