JPH02503285A - collapsible needle cover - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] collapsible needle cover Technical field This invention provides a safety device that is integrally connected to the disposable needle cannula of a hypodermic syringe. Regarding the enhanced and relatively low cost needle cover, the cover is The cannula is used because of its open and enlarged shape that exposes the cannula to administer the injection. then fold into a closed, generally planar shape that is completely enclosed, shielded, and isolated. It is foldable.

Background technology Hypodermic syringes are used for a variety of purposes. For example, a syringe is a hypodermic needle cannula. It may also be used to expel liquid medication to a patient in a vacuum. however , syringes may be used to treat patients with infectious diseases. syringe place Prior to the minute, the needle cannula of the syringe is sometimes broken off so that it is not reused. medicine Caregivers should especially avoid carelessly handling or folding the cannula after use, and needles that may have become accidentally infected by handling the firearm; Easy to hit. Resulting minor accident caused by inadvertent hitting of a needle generally requires blood tests for diseases such as AIDS and hepatitis.

The expense and inefficiency associated with blood testing for healthcare workers who are inadvertently struck by needles is significant. This can be especially devastating for healthcare facilities trying to save money. What a waste.

Our pending patent filed concurrently herein entitled "Collapsible Blood Collection Device" In the application, a collapsible needle cover with increased safety and relatively low cost is proposed. As mentioned, this cover is suitable for both subcutaneous needle cannula and collapsible blood collection tube holder. A blood sample may be automatically drawn from the patient. This invention For collapsible needle covers combined with hypodermic needle cannulae and syringe cylinders: and from which liquid medications, etc., may be drained to the patient.

Summary of the invention Generally speaking, the invention provides an integral connection to a single-use, disposable needle cannula. A safer and relatively inexpensive needle that can be attached to and folded around. Regarding the cover. In a first embodiment of the invention, the cannula and collapsible A needle cover combination is removably connected to the distal bore of the hypodermic syringe. No. In a second embodiment, the combination of cannula and collapsible needle cover is piece integrally into the distal bore of the syringe to form a disposable syringe assembly Connected.

The needle cover of this invention includes a pair of distally and proximally oriented needle cover portions; Each of the parts is adjacently connected by a living hinge around which said cover part pivots. It can be connected to the part that is connected. The needle cover is where the needle cannula administers the injection. from an open and enlarged shape that is biased into a ready state, where the needle The urea is shielded so that it is completely surrounded and isolated by the cover. It is collapsible into a closed, generally planar configuration that is biased into a closed configuration. A pair of Oppositely placed rotary motion transfer arms allow medical personnel to The needle cover is connected to the needle cover to allow manual and selective movement of the cover into the same configuration.

The locking handle is connected to one of the needle cover sections and the cannula is ready. to releasably hold the needle cover in the open configuration, or if the cannula is obstructed. Either for permanently locking the needle cover in the closed configuration when , each adapted to engage an adjacent cover portion. Therefore, the needle crab Eule is a potentially contagious and life-threatening disease that occurs when a healthcare worker accidentally hits a needle. inside its collapsible cover to avoid the spread of sexually transmitted diseases. It can be safely disposed of after use.

Brief description of the drawing Figure 1 shows a disposable needle cannula removably connected to the distal bore of a hypodermic syringe. This generator is moved into a closed and generally planar shape to enclose and shield the Figure 3 shows a foldable needle cover according to the first embodiment of the invention;

Figure 2 is for exposing the needle cannula for injecting the liquid contents of the syringe. 1 shows the collapsible needle cover of FIG. 1 in an open and generally enlarged configuration; vinegar.

3-5 show details for operating the needle cover of FIG. 1.

6 and 7 to form a one-piece disposable syringe assembly. A folding device according to a second embodiment of the invention is integrally connected to the distal bore of the hypodermic syringe. A collapsible needle cover is shown.

Description of the preferred embodiment A collapsible needle cover according to a first embodiment of the invention is shown in FIGS. best described by reference to Figure 5, Figures 1 and 2 are conventional skin The hollow cylinder of the lower syringe (shown in phantom and represented by the reference number 2) 3 shows a needle cover 1 removably connected to the distal bore of 3. Be sure to use needle cover 1. Preferably, but not exclusively, radiation grade (gradade) polypropylene. made from raw material. FIG. 1 shows the needle cannula 4 completely surrounded, shielded and spaced away, thereby preventing accidental needle contact and potentially contagious and life-threatening needle cover that is closed and generally planar to prevent possible spread of disease; -1. Figure 2 exposes cannula 4 and thereby allows said cannula to be in communication with a fluid source (such that the syringe 2 is filled with medication, vitamins, etc.) or or through the patient's skin (if the injection is done according to medically accepted techniques). The needle cover is in an open and enlarged shape to allow either -1. Collapsible needle cover 1 and needle as described shortly Cannula 4 is a one-piece combination of cannula and cover, and can be used as syringe 2. integrally connected to each other so that they can be attached to or removed from the syringe 2. It will be done.

Referring simultaneously to FIGS. 1 and 2, the needle cover 1 is oriented distally and proximally. is shown including a pair of needle cover portions 6-1 and 6-2. Needle cover part 6-1 and 6-2 between the closed shape and the open shape in FIGS. 1 and 2. by means of each living hinge 7 around which the cover pivots when moving the Can be connected to parts. The narrow orifice 8 is enlarged when the needle cover 1 is opened in Fig. 2. The distal end of needle cannula 4 passes through orifice 8 when moved into the configured configuration. at the intersection of the cover portion 6-1 directed distally via the hinge 7 so as to receive the Made.

A pair of proximally directed needle cover portions 6-2 are attached to the needle support 10 by a living hinge 9. Continued. A conventional luer lock attachment 12 extends proximally from the needle support 10. stand out.

In the assembled relationship of FIGS. 1 and 2, the Luer lock attachment of the needle cover 1 is Attachment 12 is interconnected with (i.e. engages with) the distal bore of the cylinder 3 of the syringe. ), thereby removably connecting the needle cover 1 to the syringe 2. . The needle support 10 connects the cannula to the luer lock fitting 12 and the cylinder 3 of the syringe 2. integrally connected to the needle cannula 4 to support and hold it in coaxial alignment with the needle cannula 4; (e.g. molded or heat-bonded). Therefore, the needle cover 1 and the needle cover The Nyule 4 is packaged and medically delivered as a single piece cannula and cover combination. Sent to a medical facility. Furthermore, in the assembled relationship, the proximal end of the cannula 4 The part communicates with the interior of the syringe cylinder 3 via a Luer lock fitting 12 and is connected to the interior of the syringe cylinder 3. Thus, the cylinder may be filled with liquid or drained of liquid. (The needle cover 1 is in the open and enlarged configuration of FIG. 2).

A pair of motion transfer arms 14 extend from each proximally directed needle cover portion 6-2. Project outward and in opposite directions. Explained when referring to Figure 4. The motion transfer arms 14 may be manually rotated toward each other so as to , thereby placing needle cover portions 6-1 and 6-1 around their respective hinges 8 and 9. and 6-2, and the needle cannula 4 is shielded thereby. 2 from the closed, substantially planar configuration of FIG. Move the needle cover 1 to the open and enlarged shape.

A locking handle 16 extends from one of the proximally oriented cover portions 6-2. . The first notch 18 is located on the other side of the proximally directed cover portion 6-2. It is formed.

The second notch 20 is oriented proximally from which the locking handle 16 extends. a distally directed cover immediately above and adjacent to the cover portion 6-2; It is formed in the bar portion 6-1. Explained with reference to Figures 4 and 5. The locking handle 16 has two Mtj1. Perform Noh. In the first case, the lock The king handle 16 holds the needle cover 1 in the open and enlarged configuration shown in FIGS. 2 and 4. through a notch 20 to automatically and releasably hold the This causes the cylinder 3 of the syringe 2 to be filled with liquid for the purpose of making an injection. allow. In the second case, the locking handle 16 locks the needle cover 1 in FIG. and a notch for automatically locking into the closed, substantially planar configuration of FIG. 18, thereby avoiding accidentally hitting the needle. To allow the cannula to be safely handled and discarded after use, the needle cap is The nerve 4 is surrounded, shielded and isolated.

The operation of the collapsible needle cover 1 will now be explained in FIGS. 3, 4 and 5 of the drawings. Described with reference to figures. Figure 3 shows a medical facility with the needle cover 1 placed therein. 1 shows the needle cover 1 immediately after being removed from the package to be transported to the United States. More specifically, The needle cover 1, which has been sterilized, has parts 6-1 and 6-2 that are sterilized. A closed and generally flat plate is formed around each of the hinges 7 and 9 to enclose the urea 4. It is pivoted in the shape of a surface and is packed in a substantially folded state. But long Ensure that cover 1 is moved from the folded position by medical personnel. allowing the needle cannula 4 to be shielded so that the injection can take place. In order to be biased from the condition (Figure 3) to the ready condition (Figure 4), the locking handle 16 is adjacent to the notch 18 in the adjacent proximally directed cover portion 6-2. However, it is placed on the outside. That is, the needle cover 1 is closed and generally has a flat shape. is not locked, but is moved.

The combination of needle cover 1 and needle cannula 4 has a cover that is folded. The double needle cannula 4 is removed from the package in a shielded state. The cover is then The Luer lock fitting 12 of the bar is adapted to engage the distal bore of the cylinder 3 of the syringe. It is removably attached to the syringe 2 by rotating it.

In FIG. 4, the needle cover 1 is positioned so that the needle cannula 4 can be biased into the ready position. , it is moved from the folded position. More specifically, the needle cover 1 is a syringe. A medical worker can move the movement transfer arm 14 of the pair while it is attached to the cylinder 3 of 2. Apply an axially and proximally directed force to each (see arrow 22 in Figure 3). direction). Thus, the arms 14 are oriented generally toward each other in a proximal direction. 4, thereby correspondingly opening the needle cover portions 6-1 and 6-2 in FIG. pivot around their respective hinges 7 and 9 in order to transfer to their enlarged shape. let During the repositioning of the needle cover 1 (in the direction of the reference arrow 24), directed proximally The locking handle 16 extending from the closed cover portion 6-2 is advanced through the notch 20. and thereby its adjacent, adjacently disposed and distally directed The cover portion 6-1 is automatically snapped shut to engage the cover portion 6-1, and the odor is The hand notch 20 can be releasably and reliably maintained in the enlarged shape by opening the needle cover 1. Formed to hold.

Furthermore, the distal end of the needle cannula 4 has an adjacent distally directed cover portion. The cannula 4 extends through the opening 8 in the hinge 7 between the The cylinder 3 of the syringe is injected with liquid for the next injection into the patient's skin. is maintained in a state of

After the injection has taken place, and now referring to Figure 5 of the drawings, the needle cover 1 is folded again. The cover portions 6-1 and 6-2 are folded back and closed, forming a generally flat surface. The shape is returned and the needle cannula 4 is biased into the shielded state. more specific The healthcare worker must remove the locking handle 16 from the notch 20 so that the handle is removed from the notch 20. from the distally oriented needle cover portion 6-1 (i.e. locking removal). (rotate hand 16 out of engagement). The healthcare worker then touched his thumb and With the index finger, parts 6-1 and 6-2 wrap around their respective hinges 7 and 9. pivoting and thereby folding the needle cover 1 around the needle cannula 4. Equal and opposite needle cover portions 6-2 directed proximally to (in the direction of reference arrow 26), applying a continuous force in the lateral direction By providing a proximally directed cap in which notch 18 is formed. Advance locking handle 16 through the notch in bar portion 6-2.

Accordingly, the locking handle 16 is automatically adapted to engage the cover portion 6-2. It snaps closed, thereby leaving the needle cover 1 in a position where the needle cannula 4 is shielded. Permanently locks into a closed, generally planar configuration when biased into a closed, generally planar configuration. Therefore The needle cover portions 6-1 and 6-2 prevent the syringe 2 from accidentally hitting the needle. infectious and potentially life-threatening diseases without exposure to Cannula 4 must be surrounded and shielded so that it cannot spread and is handled safely. Isolate one. The locking handle 16 has an enlarged shape when the needle cover 1 is opened (Fig. 4). ) to prevent inadvertent return of the needle cover 1 from the syringe cylinder 3. You may be However, unlike many conventional syringe assemblies, the needle Nure 4 should not be directly processed, cut out or otherwise ringed after use. Although it is not necessary to cover the needle with the needle cover 1 folded, It may be conveniently and safely disposed of in a clean state.

A collapsible needle cover 31 according to a second embodiment of the invention is now shown in FIG. The description will be made with reference to FIGS. 6 and 7. Same as the needle cover in Figures 1 to 5. 6 and 7, the needle cover 31 of FIGS. 6 and 7 is integrally connected to the needle cannula 34. Ru. (e.g. molded or glued) However, the needle cover 31 also syringe 32 to form a one-piece disposable syringe assembly. integrally connected to the distal bore of the conductor 33.

The needle covers 31 are hingedly connected to each other and the covers 31 have a closed configuration and an open configuration. Distally and proximally adapted to pivot when moved between shapes including a pair of needle cover portions 36-1 and 36-2, oriented in the direction of the needle cover portions 36-1 and 36-2.

That is, FIG. 6 shows that the needle cover portion 36-- is designed to prevent accidental contact with the needle. 1 and 36-2 completely surround cannula 34, shielding and isolating it. , the needle cover 36 is shown closed and in a generally planar configuration. Figure 7 shows the cover 31. Cannula 34 is exposed through orifice 38, thereby allowing fluid in syringe 33 to Open and enlarged to allow body contents to be injected through the patient's skin. The needle cover 31 is shown in a closed shape.

A pair of force transfer arms 44 are attached to each distally oriented needle cover portion 36-2. Project outward and in opposite directions. When referring to Figures 4 and 5 As previously disclosed, axially and proximally directed forces are rotation of the needle cover portion 36-1, 36-2 correspondingly. The motion transfer arm 44 is manually applied to travel around each of the hinges. (in the direction of reference arrow 46 in FIG. 6). Therefore, the needle cover 31 is The open and enlarged view of FIG. 7 shows the needle cannula 34 biased in the ready position. Driven by shape.

Also by applying a continuous force to the motion transfer arm 46 (in the direction of reference arrow 50) a locking handle 4 extending from a proximally oriented cover portion 36-2; 8 is advanced through a notch 52 and such a notch is inserted therein. to engage adjacent and adjacently disposed distal cover portions 36-1 formed therein. Sea urchin snaps shut.

The needle cover 31 is therefore opened and enlarged in FIG. 7 so that an injection can be made. It is releasably held in the same shape.

The needle cover 31 is closed as shown in FIG. 6 with the needle cannula 34 covered. In general, the description of returning to a flat shape (after use, the dress of the second example) (suitable for allowing the syringe 32 to be safely disposed of) with reference to FIG. It is similar to that given in . Therefore, this description is omitted for brevity. Ru.

Thanks to this invention, the needle is integrally connected to the cannula and has an open shape and a closed shape. Easily manipulated between shapes to make injections or single use Afterwards, the needle can be processed without the need for it to be handled, cut or broken. The cannula may be completely surrounded, shielded and isolated, as appropriate. Secure, enhanced safety needle covers are available. Therefore, medical work Persons are exposed to the risk of accidental needle contact and the spread of contagious and life-threatening diseases. Probably not.

While the preferred embodiment of this invention has been shown and described, various modifications can be made to this invention. It is clear that this may be done without departing from the true spirit and scope of Ming. Dew. The preferred embodiments of this invention have thus been described and the claims below. Ru.

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Claims (10)

[Claims] 1. a cylinder (3) in which the liquid is to be received, and an interior of said cylinder and a flow a needle cover (1) for a syringe (2) with a needle cannula (4) in physical communication with the needle cannula (4); an open tube in which the cannula is exposed for contact with a targeted tissue area; Due to its enlarged shape, the cannula is designed to avoid accidental needle contact. The needle covers are foldable into a closed shape that is shielded and the needle covers are axially aligned with each other. Between multiple parts (6-1, 6-2) and continuous cover parts that are connected in a supporting manner characterized by a plurality of hinges (7), each located at a collapsible on said hinges from shape to closed shape, eye-catching; The cannula is directed outwardly from the cover to contact the targeted tissue area. a first locking means (16, 20) and a portion of the cover surrounding and shielding the needle cannula; , second locking means (16,1) for locking said needle cover in a closed configuration; 8) A needle cover for a syringe, characterized by: 2. Each of the hinges (7) is connected to each of the paired parts (6-1, 6-2) of the needle cover. a needle cover for a syringe (2) according to claim 1, which is integrally connected between the 1). 3. The first locking means connects with a second of the plurality of parts (6-1) and Said needle is in an open configuration with the needle cannula (4) protruding outwardly therefrom. extending from one of said plurality of needle cover portions (6-2) for retaining the cover. Needle cover for a syringe (2) according to claim 1, comprising a locking handle (16) -(1). 4. formed through a second of the plurality of needle cover portions (6-1), and receiving the locking handle (16) therebetween and thereby opening said needle cover. According to claim 3, further characterized by a shape-holding notch (20). needle cover (1) for a syringe (2). 5. the second locking means is connected to a second one of the plurality of parts (6-2); With said needle cannula (4) surrounded and shielded, the needle cannula (4) is brought forward into a closed configuration. extending from one of said plurality of needle cover portions (6-2) for holding a needle cover; An outer cover for a syringe (2) according to claim 1, comprising a locking handle (16). Bar (1). 6. formed through a second of said plurality of needle cover portions (6-2); a locking handle (16) is received therebetween and thereby closes said needle cover. further characterized by a notch (18) for holding in the shaped shape; Needle cover (1) for a syringe (2) according to claim 5. 7. The first and second locking means lock one of the plurality of needle cover parts (6-2). a locking handle (16) extending from the second part of said needle cover part (6-1); a first notch (20) formed through the needle cover portion (6-2); another notch (18) formed through a third one of said locking A hand (16) is attached to said locking handle for connecting said locking handle to said second needle cover portion. received within a first notch (20) and thereby opening said needle cover. or said locking handle (16) holds said locking handle in a receptacle in said further notch (18) for connecting to said third needle cover part. and thereby retaining the needle cover in a closed configuration. Needle cover (1) for the syringe (2) described. 8. The cover is integrally connected to the cylinder (3) of the syringe and is a one-piece forming a non-removable syringe and needle cover assembly of claim 1. Needle cover (1) for the mounted syringe (2). 9. The cylinder (3), the needle cannula (4) and the needle cover (1) are One-piece handles that are integrally interconnected to each other and not removable to each other. Needle cover (1) for a syringe (2) according to claim 1, forming an assembly. 10. by at least one motion transfer arm (14) extending from said cover. further characterized, by applying an axial force to the arm, the needle The bar parts (6-1, 6-2) are turned with respect to each other and said needle cover is opened. Needle for a syringe (2) according to claim 1, moving between a configuration and a closed configuration. Cover (1).