Pivot-type reuse-prevention catheter

Abstract

The present invention provides a reuse-prevention catheter comprising: a catheter hub having an outer needle provided therein; an inner needle inserted into the outer needle by passing through the catheter hub; a cannula plug having the inner needle provided therein, and which separates from the catheter hub while the inner needle is withdrawn from the outer needle; a slide case fastened to the cannula plug, accommodated inside the cannula plug, and discharged from the cannula plug so as to cover the inner needle; a block socket fitted to a rear end of the catheter hub, having a needle hole that communicates with the catheter hub, and coupled to a front end of the slide case; and a locking pivot accommodated inside the block socket, having a latching part formed on one side thereof to be engaged with the rear end of the catheter hub, and having a blocking part that extends from the latching part and is bent inwardly toward the block socket, wherein when the cannula plug separates from the catheter hub, the locking pivot is pivoted such that the blocking part blocks the needle hole.

Description

Pivot-type anti-reuse catheter

[0001] The present invention relates to a reusable catheter that is structurally impossible to reuse after use and can be safely disposed of.

[0002] Catheters are efficient tools for administering medications to patients, and are widely used in hospitals. Catheters are designed to leave a hub with a tubular tip at the front end, ideal for patients requiring frequent medication infusions. This eliminates the need to pierce the skin with a needle during subsequent injections. To insert the tip into the patient's body, the catheter's needle is inserted into the tip, and the needle is then inserted into the patient's body. The cannula is then retracted, leaving the hub behind, and only the inner needle is removed.

[0003] In modern medicine, reusing invasive devices is considered a "contraindication." In particular, cannula needles, which carry a direct risk of infection, must be used only once, regardless of the invasive site. Because needles are so finely crafted and deform after a single use, reuse carries the risk of unnecessary damage to blood vessels and other tissues. Furthermore, because they enter and exit the human body, they are highly susceptible to infection.

[0004] Although reuse of invasive, single-use medical devices like catheters is prohibited, individuals other than medical professionals often reheat used needles and reuse them due to lax hygiene practices and cost concerns. Therefore, invasive medical devices like catheters need to be structurally designed to prevent reuse.

[0005] The applicant's prior registered patent, Korean Patent No. 10-1598469, has an irreversible operating mechanism in which a hub and a moving bar are fixed or separated by teeth formed on a gear, a rack, and a hub in a catheter, and after the needle is retracted and the moving bar and hub are separated, the rack blocks the path of the needle to the outside, making the needle impossible to reuse.

[0006] However, conventional reusable safety catheters required a pivot configuration that accommodated rack and gear components, requiring a housing of a predetermined size. Furthermore, the blocking mechanism for reusable safety catheters consisted of two pieces: the rack and the gear, requiring time and expense for assembly during manufacturing. Given the nature of catheters, manufacturing costs are directly linked to profitability. Requirements for multiple injection molded parts and complex manufacturing processes for a single-use product are undesirable.

[0007] Accordingly, the applicant of the present invention has designed a reuse prevention catheter that simplifies the structure through a design change of the above-mentioned Korean Patent No. 10-1598469, and in particular, greatly reduces the volume of the pivot for reuse prevention, while making it easy to assemble and minimizing the number of parts.

[0008]

[0009] The present invention aims to provide a reuse prevention catheter that is easy to assemble and can be produced at a low manufacturing cost by minimizing the volume and parts in the reuse prevention configuration that blocks re-entry of a needle.

[0010] The present invention relates to a reusable catheter, comprising: a catheter hub provided with an outer needle; an inner needle inserted into the outer needle by inserting the catheter hub; a cannula plug provided with the inner needle and separated from the catheter hub when the inner needle is withdrawn from the outer needle; a slide case connected to the cannula plug and housed inside the cannula plug, and discharged from the cannula plug to cover the inner needle; a block socket fitted to the rear end of the catheter hub, having a needle hole communicating with the catheter hub, and coupled to the front end of the slide case; And a locking pivot, which is housed inside the block socket and has a catch portion formed on one side thereof that engages with the rear end of the catheter hub, and a blocking portion formed by extending from the catch portion and bending inwardly of the block socket, characterized in that when the cannula plug is separated from the catheter hub, the locking pivot rotates so that the blocking portion blocks the needle hole.

[0011] According to one embodiment, the slide case may have a multi-stage structure including a first slide case that is housed inside the cannula plug and has a catch formed therein to prevent it from being detached when discharged from the cannula plug; and a second slide case that is housed inside the first slide case and has a catch formed therein to prevent it from being detached when discharged from the first slide case.

[0012] According to one embodiment, the block socket may be divided into a first internal space in which a front end where the locking pivot's engaging portion is formed is received, and a second internal space in which a rear end where the locking pivot's blocking portion is formed is partially positioned and the needle hole is connected thereto.

[0013] According to one embodiment, the locking pivot has a protrusion formed on the engaging portion so as to engage the rear end of the catheter hub in the first internal space of the block socket, and the engaging portion is rotated outward by an external force that separates the cannula plug from the catheter hub, thereby separating the catheter hub and the block socket, and as the engaging portion is rotated outward, the blocking portion is rotated inward of the second internal space to block the needle hole.

[0014] According to one embodiment, the block socket further includes a socket cover that shields the upper portion of the block socket, and the socket cover may have an anti-slip protrusion formed on the upper surface.

[0015] According to one embodiment, the block socket may be provided with a hub fastening portion in which the needle hole is formed at the front end of a socket housing forming the second internal space, and a pivot housing in which the first internal space is formed in an 'L' shape may be provided at the upper portion of the socket housing.

[0016] According to one embodiment, the block socket has a fastening hole formed in the side wall of the pivot housing to allow the locking pivot to rotate, and the locking pivot has a hinge portion formed at a front end to be inserted into the fastening hole, so that the engaging portion forms a fixed end that can rotate, and the blocking portion forms a free end.

[0017] According to one embodiment, the locking pivot is characterized in that it includes a hinge portion that is fastened to the block socket, forms a front end together with the locking portion, and an extension portion that transmits the rotational force of the locking portion, and the blocking portion bent inwardly of the block socket from the extension portion forms a rear end.

[0018] According to one embodiment, the locking pivot may be formed such that the blocking portion is bent inwardly of the block socket, such that the angle formed by the extension portion and the blocking portion forms an obtuse angle.

[0019] According to the present invention, when the cannula plug is separated to leave a hub formed with a tube material at the front end of the catheter, a locking pivot engaged with the catheter hub rotates to block the interior of the block socket. In the present invention, a single locking pivot is sufficient as a means to block the re-entry of the internal needle, thereby minimizing the number of components and, in particular, reducing the volume of the block socket.

[0020] According to the present invention, once the locking pivot is disengaged from the catheter hub, the locking pivot's rotation causes the engaging portion to be hidden within the first internal space, preventing the locking pivot, once pivoted within the block socket, from being returned, thereby shielding the needle hole of the block socket. Accordingly, a safety catheter can be provided that is easy to assemble, reduces manufacturing costs with a minimal number of components, and prevents reuse.

[0021] FIG. 1 is a perspective view of a reusable catheter according to an embodiment of the present invention.

[0022] Figure 2 illustrates the operation of a reusable catheter according to an embodiment of the present invention. Figure 2(a) illustrates the catheter when the cap is separated and the catheter is punctured, and Figure 2(b) illustrates the catheter when the cannula plug is withdrawn after the puncture.

[0023] Figure 3 shows a side cross-sectional view of a reusable catheter according to the embodiment of Figure 2(b).

[0024] FIG. 4 illustrates a block socket, a locking pivot, and a socket cover according to an embodiment of the present invention.

[0025] FIG. 5 illustrates a state in which the cannula plug of a reusable catheter according to an embodiment of the present invention is fully withdrawn and the locking pivot blocks the re-entry path of the needle.

[0026] Figure 6 illustrates a socket cover according to an embodiment of the present invention.

[0027] Fig. 7 illustrates a block socket and a locking pivot according to another embodiment of the present invention. Fig. 7(a) is a transparent perspective view of the block socket and the locking pivot according to another embodiment, Fig. 7(b) is a front view of the block socket and the locking pivot according to another embodiment, and Fig. 7(c) is a side view of the block socket and the locking pivot according to another embodiment.

[0028]

[0029] The various embodiments described in this document are exemplified for the purpose of clearly explaining the technical concepts of the present invention and disclosure, and are not intended to limit them to specific embodiments. The technical concepts of the present invention and disclosure include various modifications, equivalents, alternatives, and embodiments selectively combined from all or part of the embodiments described in this document. Furthermore, the scope of the technical concepts of the present invention and disclosure is not limited to the embodiments presented below or the specific descriptions thereof.

[0030] Terms used in this document, including technical or scientific terms, unless otherwise defined, may have the meaning commonly understood by one of ordinary skill in the art to which the present invention and disclosure pertain.

[0031] The expressions "includes," "may include," "comprises," "may have," "have," and "may have" used in this document imply the presence of a function, operation, or component as the target feature, and do not exclude the presence of other additional features. In other words, such expressions should be understood as open-ended terms that imply the possibility of including other embodiments.

[0032] The singular forms used in this document may include the plural form unless the context clearly indicates otherwise, and this also applies to the singular forms set forth in the claims.

[0033] As used herein, the expressions "A, B, and C," "A, B, or C," "A, B, and / or C," or "at least one of A, B, and C," "at least one of A, B, or C," "at least one of A, B, and / or C," "at least one selected from A, B, and C," "at least one selected from A, B, or C," "at least one selected from A, B, and / or C," and the like can mean each of the listed items or all possible combinations of the listed items. For example, "at least one selected from A and B" can refer to (1) A, (2) at least one of A, (3) B, (4) at least one of B, (5) at least one of A and at least one of B, (6) at least one of A and B, (7) at least one of B and A, and (8) both A and B.

[0034] The expression "based on" as used in this document is used to describe one or more factors that influence the decision, act of judgment, or action described in the phrase or sentence containing the expression, and this expression does not exclude additional factors that influence the decision, act of judgment, or action.

[0035] As used herein, the expression that a component (e.g., a first component) is “connected” or “connected” to another component (e.g., a second component) may mean that the component is directly connected or connected to the other component, as well as connected or connected via a new other component (e.g., a third component).

[0036] The expression "configured to" used in this document can have the meanings of "set to do", "having the ability to do", "changed to do", "made to do", and "able to do" depending on the context, and is distinct from the meaning of "consist".

[0037] Hereinafter, various embodiments of the present disclosure will be described with reference to the attached drawings. In the attached drawings and the description of the drawings, identical or substantially equivalent components may be assigned the same reference numerals. Furthermore, in the description of various embodiments below, duplicate descriptions of identical or corresponding components may be omitted, but this does not mean that the corresponding components are not included in the embodiments.

[0038] FIG. 1 is a perspective view of a reusable catheter according to an embodiment of the present invention.

[0039] Referring to FIG. 1, the anti-reuse catheter may include a cap (90), a catheter hub (70), a cannula plug (10), an external needle (71), and an internal needle (110). In the present embodiment, the anti-reuse catheter may further include a slide case (30), a block socket (40), a locking pivot (50), and a socket cover (44), and the further included configurations will be described later through subsequent drawings.

[0040] The cap (90) is connected to the catheter hub (70) before the needle (110) is inserted into the body of the subject, so that the end of the needle (110) is not exposed. When inserting the needle (110) into the body of the subject to use the anti-reuse catheter according to the present embodiment, the cap (90) is configured to be separated and removed.

[0041] Figure 2 illustrates the operation of a reusable catheter according to an embodiment of the present invention. Figure 2(a) illustrates the catheter when the cap (90) is separated and the catheter is punctured, and Figure 2(b) illustrates the catheter when the cannula plug (10) is withdrawn after the puncture.

[0042] Referring to FIG. 2, in the anti-reuse catheter, after the inner needle (110) is punctured and the outer needle (71) is invaded, the slide case (30) housed in the cannula plug (10) is withdrawn during the process of withdrawing the inner needle (110). After the slide case (30) is sufficiently withdrawn, the catheter hub (70) is separated from the cannula plug (10), and the slide case (30) covers the periphery of the inner needle (110) that has come out of the catheter hub (70). When the single use of the anti-reuse catheter is completed and the withdrawal of the slide case (30) is completed, an irreversible mechanism must be implemented to prevent the slide case (30) from being reinserted into the cannula plug (10). It should be noted that the slide case (30) according to the present embodiment does not have a separate locking fastening configuration, and even without the fastening configuration, the slide case (30) is prevented from being re-inserted toward the cannula plug (10) by blocking the end of the inner needle (110) within the block socket (40), which will be described later. Hereinafter, after describing the configuration of the reuse prevention catheter according to the present embodiment, the aforementioned mechanism will be described in detail.

[0043] Fig. 3 shows a cross-sectional side view of a reusable catheter according to the embodiment of Fig. 2(b). Fig. 3 shows a state in which the slide case (30) is sufficiently withdrawn, and shows the state immediately before the catheter hub (70) is separated.

[0044] The catheter hub (70) is provided with an outer needle (71), and is configured to leave the outer needle (71) of the tube material after being punctured as a guide for the inner needle (110) for patients requiring frequent drug injections. In this embodiment, the catheter hub (70) may have a fastening means formed on the outer periphery of the rear end. The fastening means of the catheter hub (70) may be a step protruding outward. Generally, since the catheter hub (70) has a protruding structure formed on the outer periphery of the rear end where the cannula is fitted, the block socket (40) fitted to the catheter hub (70) may be applied to general catheter hubs available on the market. If no fastening means are formed at all at the rear end of the catheter hub, it is preferable to apply a separate catheter hub (70) having a step structure formed on which a locking pivot (50) to be described later can be caught, to the configuration of the present reuse prevention catheter.

[0045] The inner needle (110) is a needle with a sharp end and is inserted into the outer needle (71) by passing through the catheter hub (70). The cannula plug (10) is configured such that the inner needle (110) is provided and separated from the catheter hub (70) as the inner needle (110) is withdrawn from the outer needle (71).

[0046] The cannula plug (10) may have a hollow cylindrical structure, but in the present embodiment, it may have a square structure with a hollow formed therein to prevent rotation. The cannula plug (10) is provided with an inner needle (110) that is fixedly coupled therein. A separate inner needle housing may be provided on the inside of the cannula plug (10) as a means for fixing the inner needle (110). In this case, the inner needle housing is positioned at the inner central portion of the cannula plug (10), so that a space is secured between the inner wall of the cannula plug (10) and the outer wall of the inner needle housing. A slide case (30), which will be described later, can be accommodated in this space.

[0047] The slide case (30) refers to a configuration in which the slide case is connected to the cannula plug (10), is housed inside the cannula plug (10), and is discharged from the cannula plug (10) to cover the inner burr (110). The slide case (30) may be provided in a multi-stage structure including a first slide case (31) and a second slide case (33).

[0048] The slide case (30) may have a length specification set according to the length of the inner tube (110). The slide case (30) may be configured as a single-stage long case, but in this case, the cannula plug (10) may also become longer, thereby increasing the length of the catheter itself. In this embodiment, the slide case (30) is exemplified as a two-stage structure composed of a first slide case (31) and a second slide case (33).

[0049] The first slide case (31) may be housed inside the cannula plug (10) and may be provided with a catch (310) to prevent it from being detached when discharged from the cannula plug (10). The second slide case (33) may be housed inside the first slide case (31) and may be provided with a catch (330) to prevent it from being detached when discharged from the first slide case (31).

[0050] The catches (310, 330) of the first slide case (31) and the second slide case (33) are formed at the rear ends, respectively, and refer to a structure that is interlocked with the end structure of the cannula plug (10) to prevent separation, and a known catch structure may be employed. In the present embodiment, the slide case (30) may be provided as a square structure having a hollow interior. The slide case (30) may be provided so as to be housed in the cannula plug (10) in a square structure so as not to rotate relative to the cannula plug (10).

[0051] The block socket (40) is fitted to the rear end of the catheter hub (70), has a needle hole formed that communicates with the catheter hub (70), and refers to a configuration that is coupled to the front end of the slide case (30). The block socket (40) refers to a socket that accommodates a member for blocking the re-entry of the needle (110) to prevent reuse of the needle (110). The block socket (40) is fitted to the catheter hub (70) and can be separated when a predetermined force is applied.

[0052] In the state of Fig. 2(a), the locking pivot (50) is accommodated inside the block socket (40) and supported by the inner pin (110). Referring again to Fig. 3, when the inner pin (110) is withdrawn, the separate support means at the bottom of the locking pivot (50) disappears, thereby securing the inner space of the block socket (40). Fig. 3 illustrates a moment when the block socket (40) and the catheter hub (70) are not separated just before the cannula plug (10) is completely withdrawn, but when the catheter hub (70) is separated from the block socket (40), the locking pivot (50) rotates into the secured inner space of the block socket (40) described above.

[0053] Fig. 4 illustrates a block socket (40), a locking pivot (50), and a socket cover (44) according to an embodiment of the present invention. Referring to Fig. 4, the block socket (40) can be divided into a first internal space (A1) in which a front end of the locking pivot (50) having a catch (51) formed therein is received, and a second internal space (A2) in which a rear end of the locking pivot (50) having a blocking portion (53) formed therein is partially positioned and a needle hole is connected thereto. The division structure of the block socket (40) can be a structure in which spaces are formed upward and downward, and can be a longitudinally unaligned division structure in which the first internal space (A1) formed above is pushed forward or backward relative to the second internal space (A2).

[0054] The block socket (40) may include a hub fastening portion (402), a socket housing (401), and a pivot housing (403). The hub fastening portion (402), the socket housing (401), and the pivot housing (403) of the block socket (40) may be formed integrally and may be injection-molded or machined.

[0055] The hub fastening portion (402) refers to an area where a needle hole is formed. The hub fastening portion (402) is provided at the front end of the socket housing (401). The hub fastening portion (402) can form a fitting and fixing structure on the outer periphery, and can be inserted into and fixed inward from the rear end of the catheter hub (70). The hub fastening portion (402) is connected to the second internal space (A2) toward the rear, and when connected to the catheter hub (70), the needle hole in the center communicates with the catheter hub (70).

[0056] The socket housing (401) refers to a housing that forms a second internal space (A2). The socket housing (401) may have a square structure, or may be provided in a circular structure. The rear end of the socket housing (401) is connected to the slide case (30). A pivot housing (403) may be extended from the upper portion of the socket housing (401).

[0057] The pivot housing (403) may have a fastening hole (4021) formed on the side wall to allow the locking pivot (50) to rotate. The pivot housing (403) refers to a housing that forms a first internal space (A1). The pivot housing (403) may be connected to the first internal space (A1) in an 'ㄱ' shape. Here, the 'ㄱ'-shaped connection means a hollow structure in which the first internal space (A1) is formed in a longitudinal direction and then opened downward to form a second internal space (A2). The pivot housing (403) is provided on the upper portion of the socket housing (401) and secures a 'ㄱ'-shaped path in the internal space of the block socket (40) to provide a minimum space in which the locking pivot (50) can rotate.

[0058] The locking pivot (50) is housed inside the block socket (40), and refers to a configuration in which a catch (51) that engages the rear end of the catheter hub (70) is formed on one side, and a blocking portion (53) that extends from the catch (51) and is bent in the inward direction of the block socket (40) is formed.

[0059] The locking pivot (50) may have a protruding projection formed on the engaging portion (51) to engage the rear end of the catheter hub (70) in the first internal space (A1) of the block socket (40). The locking pivot (50) may be rotated outward by an external force that separates the cannula plug (10) from the catheter hub (70), thereby separating the catheter hub (70) and the block socket (40). As the engaging portion (51) of the locking pivot (50) is rotated outward, the blocking portion (53) may be rotated inward of the second internal space (A2), thereby blocking or shielding the needle hole that is connected to the catheter hub (70) in the second internal space (A2).

[0060] The locking pivot (50) has a hinge portion (510) formed at the front end to be inserted into the fastening hole (4021), so that the engaging portion (51) can form a fixed end that can rotate, and the blocking portion (53) can form a free end.

[0061] The locking pivot (50) can form a front end together with the locking portion (51) and the hinge portion (510) that is connected to the block socket (40). The locking pivot (50) has an extension portion (52) that transmits the rotational force of the locking portion (51), and a blocking portion (53) bent inwardly of the block socket (40) from the extension portion (52) can form a rear end.

[0062] Based on the combined state, the locking pivot (50) may be formed so that the length of the rear blocking portion (53) is smaller than the height of the second internal space (A2) of the block socket (40). More preferably, the locking pivot (50) is partially exposed to the second internal space (A2) when stored in the first internal space (A1). In the present embodiment, the blocking portion (53) partially exposed to the second internal space (A2) may be formed to be smaller than half the height of the second internal space (A2). Due to the design of the length of the blocking portion (53) of the locking pivot (50), the lower portion may be supported by the inner pin (110) inserted into the second internal space (A2). Although not shown in the drawing, in another embodiment, the blocking portion (53) may have a groove formed at the lower portion in which the inner pin (110) is seated, so that the supporting force by the inner pin (110) may be strengthened.

[0063] The locking pivot (50) has a blocking portion (53) bent inwardly of the block socket (40), and may be provided such that the angle formed by the extension portion (52) and the blocking portion (53) is an obtuse angle including 90°. The blocking portion (53) comes into contact with the bottom surface of the second internal space (A2) as the locking pivot (50) rotates, and as the blocking portion (53) comes into contact with the bottom surface of the second internal space (A2), the blocking portion (53) and the extension portion (52) block the interlocked needle hole path of the second internal space (A2). With this mechanism, once the inner needle (110) is withdrawn, it cannot re-penetrate the block socket (40) due to the locking pivot (50), thereby preventing reuse.

[0064] FIG. 5 shows a state in which the cannula plug (10) of the anti-reuse catheter according to an embodiment of the present invention is completely withdrawn and the locking pivot (50) blocks the re-entry path of the needle (110).

[0065] The socket cover (44) can shield the upper part of the block socket (40). The socket cover (44) can have an anti-slip protrusion (440) formed on the upper part. The socket cover (44) is configured to be held by the user with the index finger, and the user can push the anti-slip protrusion (440) of the socket cover (44) forward with the index finger and withdraw the cannula plug (10) by holding it with the thumb and middle finger.

[0066] Fig. 6 illustrates a socket cover (44) according to an embodiment of the present invention. Fig. 6 is a side cross-sectional view of the socket cover (44) and the locking pivot (50), and explains the structure in which the socket cover (44) is fastened to the locking pivot (50).

[0067] Referring to Fig. 6, the socket cover (44) may be formed with a pivot stopper (412) protruding inwardly. The pivot stopper (412) may be provided as a hooking structure protruding inwardly of the socket cover (44). In the present embodiment, the locking pivot (50) may have two protrusions formed in the hooking portion (51). The hooking portion (51) of the locking pivot (50) may include a hub hooking portion (511) and a socket curling portion (512). The hub hooking portion (511) may be a protruding structure that hooks over the rear end of the catheter hub (50). When the catheter hub (50) moves forward or the block socket (40) moves rearward, the hub hooking portion (511) rotates clockwise with respect to Fig. 6. The socket catch (512) can be fastened to the pivot stopper (412) by a protruding structure formed above the hub catch (511). When the hub catch (511) rotates clockwise, the socket catch (512) is fastened to the pivot stopper (412), and the counterclockwise rotation can be blocked due to the inner protruding structure of the pivot stopper (412).

[0068] Fig. 7 illustrates a block socket (40) and a locking pivot (50) according to another embodiment of the present invention. Fig. 7(a) is a transparent perspective view of a block socket (40) and a locking pivot (50) according to another embodiment, Fig. 7(b) is a front view of a block socket (40) and a locking pivot (50) according to another embodiment, and Fig. 7(c) is a side view of a block socket (40) and a locking pivot (50) according to another embodiment.

[0069] In the embodiment of Fig. 7, the locking pivot (50) discloses an embodiment in which a protrusion is configured in a sawtooth shape on the engaging portion (51). Referring to Fig. 7, the locking pivot (50) may be configured with a engaging portion (51), an extension portion (52), and a blocking portion (53). In this embodiment, the engaging portion (51) may be provided as a blocking structure in which several protrusions are shaped like sawtooth. In this case, the catheter hub (70) may form a plurality of protruding structures on the step at the rear end so that the teeth of the engaging portion (51) engage with each other. The blocking portion (53) may be bent perpendicular to the extension portion, and a groove (530) may be formed at the bottom of the blocking portion (53) in which a needle is seated.

[0070] While the technical concept of the present invention and disclosure has been illustrated by the embodiments described above, the technical concept of the present invention encompasses various substitutions, modifications, and variations that can be made within the scope understandable to those of ordinary skill in the art. Furthermore, it should be understood that such substitutions, modifications, and variations are encompassed within the scope of the appended claims.

[0071]

[0072] 10: Cannula plug

[0073] 110: Invasion

[0074] 70: Catheter hub

[0075] 71: Shout

[0076] 30: Slide case

[0077] 31: First slide case

[0078] 310, 330: Hook

[0079] 33: Second slide case

[0080] 40: Block Socket

[0081] 44: Socket cover

[0082] 412: Pivot Stopper

[0083] 401: Socket housing

[0084] 402: Hub fastener

[0085] 4021: Fastener

[0086] 403: Pivot Housing

[0087] 440: Anti-slip protrusions

[0088] 50: Locking Pivot

[0089] 51: Hook

[0090] 510: Hinge

[0091] 511: Hub jam

[0092] 512: Socket catch

[0093] 52: Extension

[0094] 53: Blocking section

[0095] 90: Cap

[0096] The present invention ensures the disposable use of a catheter as a tool for injecting a drug to a patient.

Claims

1. Catheter hub with callout; An internal needle inserted into the external needle by passing through the above catheter hub; A cannula plug provided with said urethra and separated from said catheter hub as said urethra is withdrawn from said urethra; A slide case that is connected to the cannula plug, is housed inside the cannula plug, and is discharged from the cannula plug to cover the inner cavity; A block socket fitted to the rear end of the catheter hub, having a needle hole formed therein and communicating with the catheter hub, and coupled to the front end of the slide case; and A locking pivot, which is housed inside the block socket and has a catch formed on one side to engage with the rear end of the catheter hub, and a blocking portion formed by extending from the catch and bending inwardly of the block socket; A reusable catheter characterized in that when the cannula plug is separated from the catheter hub, the locking pivot rotates so that the blocking portion blocks the needle hole.

2. In paragraph 1, The above slide case, A first slide case that is housed inside the cannula plug and has a catch formed therein to prevent it from being released when discharged from the cannula plug; and A second slide case which is housed inside the first slide case and has a catch formed therein to prevent it from being ejected from the first slide case; An anti-reuse catheter characterized by a multi-stage structure including:

3. In paragraph 1, The above block socket is, A reuse prevention catheter characterized in that it is divided into a first internal space in which a front end where the engaging portion of the locking pivot is formed is stored, and a second internal space in which a rear end where the blocking portion of the locking pivot is formed is partially positioned and the needle hole is communicated.

4. In paragraph 3, The above locking pivot is, A protrusion is formed on the engaging portion to engage with the rear end of the catheter hub in the first internal space of the block socket, The above cannula plug is separated from the catheter hub by an external force, causing the engaging portion to rotate outward, thereby separating the catheter hub from the block socket. A reuse prevention catheter characterized in that as the engaging portion rotates outward, the blocking portion rotates inwardly of the second internal space to block the needle hole.

5. In paragraph 3, Further comprising a socket cover shielding the upper portion of the above block socket; The above socket cover, An anti-reuse catheter characterized by having an anti-slip protrusion formed on the upper surface.

6. In paragraph 3, The above block socket is, The hub fastening portion in which the needle hole is formed is provided at the front end of the socket housing forming the second internal space, A reuse prevention catheter characterized in that a pivot housing that connects the first internal space in an ‘ㄱ’ shape is provided on the upper part of the socket housing.

7. In paragraph 6, The above block socket is, A fastening hole is formed on the side wall of the pivot housing so that the locking pivot can be rotatably fastened, The above locking pivot is, A reuse prevention catheter characterized in that a hinge part inserted into the above fastening hole is formed at the front end, the engaging part forms a rotatable fixed end, and the blocking part forms a free end.

8. In paragraph 1, The above locking pivot is, Forming a shear together with the catch portion, including a hinge portion that is connected to the block socket, An extension that transmits the rotational force of the above-mentioned engaging part, A reusable prevention catheter characterized in that the blocking portion bent in the inward direction of the block socket in the above extension portion forms a rear end.

9. In paragraph 8, The above locking pivot is, A reuse prevention catheter, characterized in that the blocking portion is bent in the inner direction of the block socket, and the angle formed by the extension portion and the blocking portion is an obtuse angle range including 90°.

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