ES1067206U - Needle safety device of an intravenous cateter apparatus (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

A needle safety device of an intravenous catheter apparatus, the needle safety device comprising: A base capable of receiving a needle; Two jaws in opposition joined to the base and connected to each other by at least one joint at a certain distance from the base, the jaws being capable of being affected by the needle; The jaws being movable between an expanded position in which the effective outer diameter of the jaws is increased when a needle is between the jaws and a folded position when the needle is not between the jaws; The jaws allowing the relative movement of the needle relative to the base when expanded, closing around a point of the needle and preventing relative movement of the needle with respect to the base when folded. (Machine-translation by Google Translate, not legally binding)

Description

Needle safety device of a intravenous catheter apparatus.

Object of the invention

The present invention relates to a protector of the tip of the needle of an intravenous (IV) catheter. In In particular, the invention relates to a safety device of the needle that automatically covers the needle during patient extraction to prevent accidental contact with medical professionals

Background of the invention

Medical professionals meet with numerous occupational risks when they pay attention to patients A serious risk is an accidental needle prick after removing it from an intravenous catheter. The prick accidental with the skin needle of medical professionals It is especially dangerous because the needle tip penetrates easily in latex gloves worn by professionals Medicine. The question of accidental prick is of interest special in this era of diseases transmitted through the blood like hepatitis or AIDS. The tip protectors of the previous needle have been manufactured admitting the need for cover the tip of the needle when removed from the catheter. The technique previous admits that the needle tip guard is placed over the needle once the needle is being removed from the catheter; however, the prior art presents difficulties in the assembly uses a practical, tapered wing housing which has to be wider than necessary, use structures complicated and presents other inconveniences. These inconveniences they become evident when examining the US patent. UU: no. 5,135,504 of McLees and the US patent. UU. No. 6,117,108 of Woehr.

Description of the invention

Therefore, a main objective of the invention is to provide a needle safety device in the that the drawbacks of the prior art be overcome.

Another objective of the present invention is provide an intravenous catheter apparatus in which a cylindrical housing in non-tapered wing that reduces the size Total intravenous catheter apparatus.

Another objective of the present invention is provide a needle safety device that has a shape simplified and therefore less expensive in its Production and use.

Consequently, in the following revelation set out the above objectives as well as numerous advantages of the present invention

The above objectives are achieved through the content of the independent claims.

The needle safety device of the invention comprises a base capable of receiving a needle and two opposing jaws attached to the base and capable of being affected by the needle The two opposing jaws together form a containment mechanism of recoil. The jaws are mobile between an expanded position in which the outer diameter effective jaws increase when the needle is between the jaws and a folded position when the needle is not between the jaws The jaws of the needle safety device allow the relative movement of the needle with respect to the base when the jaws are expanded. The jaws close around the tip of the needle as the needle slides through the space between the jaws. The jaws prevent the relative movement of the needle with respect to the base when the jaws are folded.

The needle safety device can be use with an intravenous catheter with a flexible catheter attached to a wing accommodation. The intravenous catheter apparatus It has an internal obstruction inside the wing housing. Inside the flexible catheter, in the wing housing, is arranged a needle with tip. The jaws of the device Needle security, as indicated above, are mobile between an expanded position in which the jaws are displaced out by the needle and a folded apposition in which it prevents movement beyond internal obstruction when the jaws close around the tip of a needle which allows the needle safety device to move further beyond the obstruction, meanwhile covering the tip of the needle.

In accordance with another aspect of this invention, the needle safety device has a part on a ramp adapted to allow the movement of the device needle safety beyond an obstruction of the device intravenous catheter when in the expanded position for assembly More typically, the obstruction is a round ring located inside the wing housing.

In accordance with another aspect of this invention, the jaws have a part perpendicular to the part cylindrical wing housing that prevents more movement beyond an obstruction of the intravenous catheter apparatus while that the needle safety device is in a position expanded.

In accordance with another aspect of this invention, the jaws are connected to each other by at least one joint at a certain distance from the base. The at least one joint prevents the two jaws from distancing too much, which would result in permanent damage to the safety device of the needle. The joint can only be arranged in one part of the jaws. Alternatively, they may be arranged. first and second joints in opposite parts of the jaws Preferably, the at least one jaw is formed to have properties similar to those of a spring in such a way that the jaws can be separated from each other against the force of recovery of a spring from the joint. The joint is designed in a way that retains its properties similar to of a spring during the period of useful life. For example, the joint can have a curved shape, such as a shape of "S" or "Z". Alternatively, the joint can have a substantially straight shape. To make possible one Simplified and economical production of the safety device of the needle, the base, the jaws and, preferably also, the al less a joint can be integrally formed and, preferably, made of a plastic material by, by example, injection molding. Alternatively, the base, the jaws and, preferably also, the at least one joint They can be made of a metallic material.

In accordance with another aspect of this invention, the needle safety device is capable of receive needles of caliber between 14 and 18.

In accordance with another aspect of this invention, the needle safety device is capable of receive needles of caliber between 18 and 24.

In accordance with another aspect of this invention, the intravenous catheter apparatus has a housing in cylindrical wing. The needle safety device fits efficiently inside the cylindrical wing housing.

In accordance with another aspect of this invention, the needle safety device is maintained in position inside a needle hub chamber.

In accordance with another aspect of this invention, the needle safety device is positioned with the needle safety device adjoining a base of the catheter.

Brief description of the figures

In the following description and in the drawings attachments describe preferred embodiments of the invention.

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

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

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

Figure 3A is an alternative embodiment of needle safety device of figure 3.

Figure 4 is a top view of the intravenous catheter apparatus with the needle partially removed of the catheter and wing housing.

Figure 5 is a side view of the section cross section of figure 4 taken along the line 5-5.

Figure 6 is a top view of the intravenous catheter apparatus with the needle removed from the catheter and the needle out of between the jaws of the safety device of the needle.

Figure 7 is a side view of a section cross section taken along line 7-7 of the figure 6.

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

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

Figure 9 is an enlarged view of a section transverse of an alternative embodiment of the device needle safety that has a needle of increasing width and a tension ring with jaws in open position.

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

Figure 11 is a top view of the intravenous catheter apparatus with the needle removed from the catheter and of wing accommodation.

Figure 12 is a side cross section taken along line 9-9 of the figure 10.

Figure 13 is the safety device of a needle of figure 8 with a joint that connects the jaws

Figure 13A is the safety device of a needle of figure 8A with a joint that connects the jaws

Preferred Embodiment of the Invention

Referring to figure 1, a intravenous (IV) catheter apparatus 10 of the present invention. He IV catheter apparatus looks like finished product before use and includes a needle cover 12, a wing housing 14, a port cover 16 in unit assembly with housing 14 in wing, and a hub 18 of the needle attached to the housing 14 in wing.

As seen in the cross section shown in figure 2, the needle 20 extends from the hub 18 of the needle through the wing housing and ends in a needle tip 22 under the needle cover 12.

The needle 20 is hollow and the tip 22 of the needle It is typically cut diagonally. When the tip 22 of the needle is inserted into a patient the needle can find pressure fluid that travels through the tip 22 of the needle, to through the needle 20 and enters a return chamber 24.

Surrounding the needle is a catheter 26 attached to the wing housing 14 through catheter base 28. Catheter 26 is a flexible tube that will remain in the user to administer fluids, food or medicines.

Figure 3 is an enlarged view of the needle safety device 40 of figure 2. The hub 18 of the needle has an adjacent chamber 30 that is used to hold in position the needle safety device 40 within the accommodation 14 in wing. The wing housing 14 has a chamber 32 of the wing housing in which the device is located needle safety. Inside chamber 32 of the accommodation in wing is an obstruction 34 that intersects with device 40 needle safety. In the illustrated embodiment, the Obstruction 34 is a round ring.

The base of the catheter extends into the wing housing and adjoins the safety device 40 of the needle. As illustrated, the needle safety device 40 stays in position safely inside chamber 30 adjoining and catheter base 28.

The needle safety device 40 has a base 42 having a needle passage 44 inside. He needle safety device 40 also has a collar 46 investment used to expand and border on the obstruction 34 and to contract it and avoid obstruction 34.

The inversion collar has two jaws 48 movable between an expanded position with the outside diameter jaw force increased when needle 20 is between the jaws 48. The jaws move from the expanded position to the folded position when the needle 20 is no longer between jaws 48. Jaws 48 interact with obstruction 34 to make possible the relative movement of the needle 20 with respect to the base 42 of the needle safety device 40. The jaws 48 allow this relative movement when they are in position expanded, as seen in the progressive movement between the figures 2, 5, 7 and 10.

When the needle 20 exceeds the jaws 48, the jaws close around the tip 22 of the needle which prevents accidental contact by the medical professional with the tip 22 of the needle. Jaws 48, when closed around the tip 22 of the needle, they prevent movement relative of the needle 20 relative to the base of the device 40 of needle safety because jaws 48 slide after obstruction 34 without obstruction 34 pulling device 40 from needle safety. The device 40 of needle safety is held in position by the obstruction so that the needle 20 moves relative to the device 40 needle safety. Needle passage 44 needle safety device 40 has a coefficient of friction holding the needle 20 when the device 40 of needle safety is not held in position by the obstruction 34.

As seen in enlarged figures 3, 3A, 8, and 8A, jaws 48 have a ramp 50. During assembly, the needle safety device 40 is typically positioned above the needle 20 on the end attached to the hub 18 of the needle and, then, on the end attached to the hub 18 of the needle. From in this way, the needle safety device 40 expands before being located inside the housing 14 in wing. As the needle is placed inside the catheter the safety device 40 of the needle is inserted into the wing housing and is with obstruction 34. Ramp 50 gradually moves to through obstruction 34 and then fits through the obstruction to provide a positive feeling to assembler. An opposite part 52 of the ramp 50 prevents backward movement of the needle safety device 40 once in position beyond obstruction 34.

The jaws 48 are connected to each other by the minus a joint 49 (Figures 13 and 13A) located in a region between base 42 and ramp 50. The joint may be provided only in part of the jaws 48. Alternatively, they may be provided first and second joints in opposite parts of the jaws 48. The at least a joint is formed with properties similar to those of a spring so that jaws 48 can be separated by overcoming the joint recovery strength. For example, the Joint can have a curved shape, such as that of an S- or Z. Alternatively, the joint may have a shape. substantially straight.

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

On the jaws 48 a taper 54 inverse. This inverse taper 54 engages the tip 22 of the needle allowing the tip 22 of the needle to move beyond reverse taper 54. As seen by comparison in figures 3 and 3A, the inverse taper 54 can be in one or both jaws 48.

As seen in Figures 9 and 10, the device 40 needle safety can use a needle 23 of progressive widening and a tension ring 53 to maintain the needle safety device 40 in communication protective with the tip 22 of the needle. Needle 20 has a widening located near the needle tip 22 so that its effective diameter increases at that specific point. He widening 23 is created in the assembly after the needle safety device 40 is positioned on the needle 20 which is attached to the hub 18 of the needle. He widening 23 ensures that the safety device 40 of the needle is not removed once the tip 22 of the needle is held in the needle safety device 40. In addition, it is arranged a tension ring 53 on the jaws that will make effective folding of the jaws once the tip 22 of the needle moves past the front of the jaws 48 after removal of needle 20 from catheter 26 once used

In use, a medical professional receives the device of intravenous (IV) catheter with a protective cover 12 of the needle, as seen in figures 1 and 2, needle 20 and catheter 26 They are inserted into a patient's vein. Next, as seen in Figures 4 and 5, the needle is removed from the patient by holding the housing 14 on the wing and pulling the hub 18 of the needle. Needle 20 slides through catheter 26 and device 40 of needle safety.

The tip 22 of the needle exceeds the jaws 48 allowing the jaws to fold into position natural. Alternatively, the tension ring 53 located above the jaws causes jaws 48 to fold effectively. The jaws, in their natural position, can exceed the obstruction 34 of housing 14 in wing. Alternatively, the needle safety device 40, as seen in figures 8 and 8A, can still contact lightly with obstruction 34; however, jaws 48 made of a flexible material and no longer limited by the metal syringe 22 may flex slightly to pass obstruction 34. In this scenario, passage 44 of needle located at base 42 holds needle 20 sufficiently to that the jaws pass the obstruction 34. Alternatively, the widening 23, as in figure 9, does not pass inside the passage 44 of the needle which allows jaws 48 to pass the obstruction 34.

Next, as seen in Figures 9 and 10, the medical professional totally removes the device 40 from needle safety along wing housing 14 for elimination. The device protects the medical professional against accidental punctures with the tip 22 of the needle.

The needle safety device 40 remains assembled in position, as seen in figure 1, without affect the operation and operation of catheter apparatus 10 intravenously having a contoured back of base 42 embedded inside the needle hub adjacent to the camera. With the part 42 of the base in the adjacent chamber 30, ensures that the jaws are always in a plane parallel to the needle 20 of so that the needle 20 can move properly between the jaws and ensure the correct operation of the device 40 of needle safety.

The tip 22 of the needle once inside the needle safety device 40 does not come out even pressed against the medical professional, against a work surface or against another object. Once he needle safety device 40 is in position, the needle 20 is safe and can be discarded.

Claims (27)

1. A needle safety device an intravenous catheter apparatus, comprising the needle safety device: a base capable of receiving a needle; two opposing jaws attached to the base and connected to each other by at least one joint to a certain distance from the base, the jaws being able to be affected by the needle; being the movable jaws between a position expanded in which the effective outside diameter of the jaws when a needle is between the jaws and a folded position when the needle is not between the jaws; allowing the jaws relative movement of the needle with respect to the base when they are expanded, closing around a needle tip and preventing movement relative of the needle with respect to the base when folded. 2. A safety device with a needle according to claim 1, wherein the joint is provided only in one part of the jaws. 3. A safety device with a needle according to claim 1, wherein first and second joints in opposite parts of the jaws. 4. A safety device with a needle according to any one of the preceding claims, in which the or each joint is formed to have properties similar to those of a spring so that the movers are can separate against a recovery force from the joint. 5. A needle safety device according to any one of the preceding claims, in which the or each joint has a curved shape, for example, similar to that of an S-o zeta, or substantially straight. 6. A needle safety device according to any one of the preceding claims, in that the jaws have a ramp part adapted to allow movement beyond an obstruction of the apparatus of intravenous catheter when in the expanded position for assembly 7. A needle safety device according to claim 6, wherein the or each joint It is provided in a region between the base and the ramp part. 8. A safety device with a needle according to any one of the preceding claims, in that the jaws have an adapted part to prevent movement of the intravenous catheter apparatus beyond a obstruction when in the expanded position 9. A safety device with a needle according to any one of the preceding claims, in the one that the base receives needles of caliber between 14 and 18. 10. A needle safety device according to any one of claims 1 to 8, wherein the base receives needles of caliber between 18 and 24. 11. A safety device with a needle according to any one of the preceding claims, in that the jaws have an inverse taper adapted to create a barrier against the movement of a needle tip once that the jaws have moved to the folded position. 12. A safety device with a needle according to any one of the preceding claims, in the one that the jaws have a tension ring that folds Positively the jaws. 13. An intravenous catheter apparatus that understands: a flexible catheter attached to a housing in to; an internal obstruction inside the housing in wing; a needle inside the flexible catheter and the wing accommodation; Y a needle safety device according to claims 1 to 12 having a base and jaws through which passes the needle, in which the jaws are connected each other by at least one joint some distance from the base, and in which the jaws are movable on the device of needle safety between an expanded position in which the jaws are moved out by the needle and prevent the movement beyond the internal obstruction, and a position folded in which the jaws close around a tip of needle which allows the needle safety device to move past the obstruction while lining the tip of needle. 14. An intravenous catheter apparatus of according to claim 13, wherein the joint is provided only in one part of the jaws. 15. An intravenous catheter apparatus of according to claim 13, wherein they are provided first and second joints in opposite parts of the jaws. 16. An intravenous catheter apparatus of according to any one of claims 13 to 15, in the that the or each joint is formed to have properties similar to those of a spring so that the jaws are can separate against a recovery force from the joint. 17. An intravenous catheter apparatus of according to any one of claims 13 to 16, in the that the or each joint has a curved shape, for example, shape similar to that of the S - or Z, or a substantially straight shape. 18. An intravenous catheter apparatus according with any one of claims 13 to 17, wherein jaws have a ramp part that allows the movement of the safety device of a needle beyond the obstruction during assembly. 19. An intravenous catheter apparatus according with any one of claims 13 to 18, wherein the or each joint is provided in a region between the base and the Ramp part. 20. An intravenous catheter apparatus according with any one of claims 13 to 19, wherein least one gag has an aside that prevents the movement of the safety device of a needle beyond the obstruction when the jaws are expanded. 21. An intravenous catheter apparatus according with any one of claims 13 to 20, wherein least one gag has an inverse taper to create a barrier that prevents accidental movement of the tip of the needle out of the needle safety device. 22. An intravenous catheter apparatus according with any one of claims 13 to 21, wherein jaws have a tension ring that positively folds the jaws 23. An intravenous catheter apparatus according with any one of claims 13 to 22, comprising also a needle hub attached to the needle, an adjacent chamber inside the cube, based on the adjustment of the device needle safety in the adjoining chamber to align the needle safety device with the needle. 24. An intravenous catheter apparatus according with any one of claims 13 to 23, comprising also a catheter base inside the wing housing, adjoining the jaws of the needle safety device with the base of the catheter to secure the needle safety device during the movement inside the wing housing. 25. An intravenous catheter apparatus of according to any one of claims 13 to 24, in the that the obstruction is an annular ring. 26. An intravenous catheter apparatus of according to any one of claims 13 to 25, in the that the wing housing has an approximately cylindrical tube in which the needle and the safety device of the needle. 27. An intravenous catheter apparatus of according to any one of claims 13 to 26, in the that the needle has its tip widened.