Safety detachment module and needle insertion apparatus having the same
Patent Information
- Authority / Receiving Office
- KR · KR
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-08-12
Smart Images
Figure PAT00001_ABST
Abstract
Description
Technology Field
[0001] The present invention relates to a safety detachment module and a needle insertion device including the same, and more specifically, to a safety detachment module and a needle insertion device including the same that utilizes a magnetic unit and an inclined structure to naturally induce detachment when a load greater than the target load is applied based on force separation characteristics, thereby enabling safe operation with high reliability. Background Technology
[0002] In general, for safety detachment technology that releases the coupled state when an external force or load exceeding a certain level is applied in a device performing a specific operation, electronic driving methods using sensors and actuators and physical driving methods using passive components have been applied.
[0003] However, in the case of the aforementioned electronic driving method, both sensors and actuators must be installed, and due to the problem of electrical signal malfunction, the physical driving method is mainly preferred in terms of reliability.
[0004] In the case of conventional physical drive methods, most methods involve applying a structure whose shape changes according to a load, such as in Korean Utility Model No. 20-0497693, and inducing physical detachment due to a change in structure when the structure changes upon the application of a load exceeding a certain amount.
[0005] However, in the case of physical actuation methods utilizing such elastic bodies, deformation occurs in proportion to the load, so positional errors due to deformation may occur even before the target separation load is reached, which limits reliability. Prior art literature
[0006] Republic of Korea Registered Utility Model No. 20-0497693 The problem to be solved
[0007] Accordingly, the technical problem of the present invention is conceived from this point, and the objective of the present invention is to provide a safety detachment module that can naturally induce detachment when a load greater than the target load is applied based on the force separation characteristics using a magnetic unit and an inclined structure, thereby enabling safe operation with high reliability.
[0008] In addition, another objective of the present invention is to provide a needle insertion device comprising the safety detachable module. means of solving the problem
[0009] A safety detachable module according to one embodiment for realizing the purpose of the present invention described above comprises a base portion, a sliding block, and a transfer block. The base portion extends in a first direction and is provided with a first magnetic body. The sliding block has a first inclined surface inclined toward the first direction and is fixed on the base portion. The transfer block has a second inclined surface facing the first inclined surface and receives an attractive force from the first magnetic body in a second direction perpendicular to the first direction.
[0010] In one embodiment, the transfer block may be provided with a second magnetic body positioned to be aligned with the first magnetic body in the second direction.
[0011] In one embodiment, when an external force in the first direction is applied to the transfer block and the alignment of the first magnetic body and the second magnetic body in the second direction is misaligned, the transfer block can be transferred along the first inclined surface.
[0012] In one embodiment, as an external force is applied to the transfer block in the first direction, the external force is distributed in the second direction by the second inclined surface, and when the external force distributed in the second direction is equal to or smaller than the force, the transfer block can come into contact with the first inclined surface and its position can be fixed.
[0013] In one embodiment, as an external force is applied to the transfer block in the first direction, the external force is distributed in the second direction by the second inclined surface, and when the external force distributed in the second direction is greater than the attractive force, the transfer block can be transferred along the first inclined surface.
[0014] A needle insertion device according to one embodiment for realizing another objective of the present invention described above includes a transfer unit and a driving unit. The transfer unit is equipped with a syringe to which a needle part is connected. The driving unit transfers the transfer unit in a first direction. When an external force exceeding a preset external force is applied to the needle part, the transfer unit is disconnected from the driving unit, and the transfer of the needle part in the first direction is restricted.
[0015] In one embodiment, the driving unit may include a fixed block that is moved in the first direction according to the provision of driving force, and a sliding block that is fixed on the fixed block and has a first inclined surface.
[0016] In one embodiment, the transfer unit may include a transfer frame on which the syringe is mounted, and a transfer block rotatably connected to the transfer frame and having a second inclined surface facing the first inclined surface.
[0017] In one embodiment, when an external force less than or equal to a preset external force is applied to the needle portion, the first inclined surface and the second inclined surface are in contact with each other according to the provision of the driving force, and the transfer block can also be moved according to the movement of the sliding block.
[0018] In one embodiment, when an external force greater than a preset external force is applied to the needle portion, the transfer block is transferred along the first inclined surface and rotates relative to the transfer frame, so that the transfer of the needle portion may be restricted in the first direction.
[0019] In one embodiment, the sliding block may be provided with a first magnetic body, and the transfer block may be provided with a second magnetic body aligned with the first magnetic body.
[0020] In one embodiment, when an external force is applied to the needle portion in the first direction, the external force is dispersed in a second direction perpendicular to the first direction by the second inclined surface, and the external force dispersed in the second direction can be offset by the attractive force acting between the first and second magnetic bodies.
[0021] In one embodiment, when the external force distributed in the second direction is equal to or smaller than the attractive force, the needle part is transported in the first direction, and when the external force distributed in the second direction is greater than the attractive force, the transport of the needle part in the first direction may be restricted.
[0022] In one embodiment, the transfer block may include a central frame on which the second inclined surface is formed, side frames extending from both sides of the central frame, and a rotating link extending rotatably between the side frames and the transfer frame.
[0023] In one embodiment, the driving unit further includes a base portion having an opening through which the transfer unit is mounted on the upper part and the fixed block passes, and the transfer unit may further include a transfer guide located on the base portion to guide the transfer of the transfer frame. Effects of the invention
[0024] According to embodiments of the present invention, through magnetic bodies aligned in a vertical direction and a structure forming an inclined surface, a fixing force is provided up to a preset range against an external force in a horizontal direction, and when an external force greater than the preset range is applied, the module can be implemented to slide along the inclined surface, thereby enabling the implementation of a predetermined safety detachable module.
[0025] In particular, when an external force exceeding a preset range is applied, the alignment state between the magnetic bodies is released, causing a rapid decrease in magnetic force, which allows for easy separation, i.e., transport along an inclined plane, thereby enabling instantaneous detachment. That is, when an external force exceeding a preset range is applied, the transport block is induced to move away from its fixed position, thereby enabling a safe state.
[0026] For example, when a safety detachment module as described above is provided in a needle insertion device, when inserting the needle part into the body, if an external force exceeding a preset external force is applied, the needle part is restricted from moving further toward the body, thereby minimizing the occurrence of safety accidents. That is, if the needle part is not inserted into the correct position and an unexpected external force is applied to the needle part, the needle part can be separated from the driving unit that transports the needle part, and the movement of the needle part can be restricted regardless of the operation of the driving unit, thereby minimizing the occurrence of safety accidents.
[0027] That is, in the above needle insertion device, the syringe equipped with the needle portion is mounted on the transfer unit, and the transfer unit is provided with driving force by the driving unit and slides in a first direction so that the needle portion is inserted into the body. At this time, the transfer unit and the driving unit each maintain a fixed state by the fixing force between the transfer block and the sliding block, which each have an inclined surface. However, if the external force applied to the needle portion is greater than the fixing force, the transfer block rises along the inclined surface, and thus, even if the driving unit is driven, the transfer unit is restricted from moving in the first direction. Accordingly, if the needle portion is incorrectly inserted into the body and an unexpectedly large external force is transmitted, the movement of the needle portion in the needle insertion device is restricted, thereby preventing problems such as safety accidents.
[0028] Meanwhile, when the transfer block rises along the inclined surface as described above, the rotating link included in the transfer block rotates relative to the transfer frame, thereby restricting the needle part from further entering in the first direction and fixing its position. Brief explanation of the drawing
[0029] FIGS. 1a to 1c are side views illustrating the operation of a safety detachable module according to an embodiment of the present invention. FIG. 2 is a perspective view illustrating a needle insertion device with the safety detachable module of FIG. 1a applied thereto. FIG. 3 is a perspective view showing the needle insertion device of FIG. 1 from a different direction. Fig. 4 is a side view illustrating the transfer unit of Fig. 2. FIG. 5 is a perspective view illustrating the driving unit of FIG. 2. FIG. 6 is a bottom perspective view illustrating the transfer unit of FIG. 2. FIGS. 7A and FIGS. 7B are side views illustrating the state in which the needle insertion device of FIG. 2 is safely operated. Specific details for implementing the invention
[0030] The present invention is susceptible to various modifications and may take various forms, and embodiments are to be described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each figure. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms.
[0031] The above terms are used solely for the purpose of distinguishing one component from another. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "consisting of" are intended to specify the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.
[0032] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings.
[0033] FIGS. 1a to 1c are side views illustrating the operation of a safety detachable module according to an embodiment of the present invention.
[0034] First, referring to FIG. 1a, the safety detachable module (10) according to the present embodiment includes a base part (11), a sliding block (12), and a transfer block (14).
[0035] As illustrated, the base part (11) may be a frame extending parallel along the first direction (X), and its size may be varied. Additionally, although the base part (11) is illustrated in the drawing as having a specific block structure as a separate structure, the base part (11) may form a part of the base surface of a specific device and may be a separate block mounted on a specific device.
[0036] That is, the base part (11) is not limited to the illustrated structure and may correspond to a part of the surface or part of the configuration of the device on which the safety detachable module (11) is provided or mounted.
[0037] Ultimately, the above-described safety detachment module (10) may be formed integrally with a structure as described above and provided in a device or structure requiring safety detachment, but is not limited thereto, and the base part (11), the sliding block (12), and the transfer block (14) included in the safety detachment module (10) may all be part structures formed on a predetermined device or structure. That is, in a predetermined device or structure, the part requiring safety detachment may be manufactured with the same structure as the components included in the safety detachment module (10).
[0038] The sliding block (12) is fixed to one side on the upper surface of the base part (11), and the position where the sliding block (12) is fixed or the size of the sliding block (12) is not limited.
[0039] At this time, although the base part (11) and the sliding block (12) may be illustrated as being in a fixed state through the drawing, if the base part (11) and the sliding block (12) are fixed to each other, the base part (11) and the sliding block (12) may be structured to be moved in a predetermined direction. That is, the base part (11) and the sliding block (12) may be moved as a single unit in a predetermined direction, for example, the first direction (X).
[0040] Additionally, as illustrated, the sliding block (12) includes a first inclined surface (13), which is formed on a surface facing the transfer block (14). At this time, the angle of inclination (θ) formed by the first inclined surface (13) with respect to the first direction (X) is sufficient if it is an acute angle, and the angle is not limited to a specific angle.
[0041] The transfer block (14) is positioned on the upper surface of the base part (11) so as to face the sliding block (12), and the transfer block (14) is not fixed to the upper surface of the sliding block (12) and can be transferred along the first direction (X).
[0042] At this time, the transfer block (14) includes a second inclined surface (15) facing the first inclined surface (13) formed by the sliding block (12), and the second inclined surface (15) has the same outer angle as the first inclined surface (15). That is, the first inclined surface (13) and the second inclined surface (15) can face each other and come into contact by forming the same angle of inclination.
[0043] As illustrated, the above transfer block (14) may be subjected to a predetermined external force (F1) in a negative first direction (-X) from the outside, and accordingly, if the above transfer block (14) corresponds to a part of a separate structure or device, it corresponds to a part that receives a predetermined external force (F1) from the outside.
[0044] In this embodiment, a first magnetic body (16) is provided on one side of the upper surface of the base portion (11), that is, the portion where the transfer block (14) is located, and a second magnetic body (17) is provided on the lower surface of the transfer block (14). At this time, the first and second magnetic bodies (16, 17) form an attractive force with each other and may be permanent magnets, but electromagnets are not excluded. Furthermore, it is sufficient for the first and second magnetic bodies (16, 17) to be composed of a magnetic material having magnetic force.
[0045] At this time, when the centers of the first magnetic body (16) and the second magnetic body (17) are aligned with each other in the second direction (Y) perpendicular to the first direction (X), as in FIG. 1a, an attractive force acts between them. Thus, the transfer block (14) is positioned at the location in FIG. 1a with its position fixed to the base part (11).
[0046] Meanwhile, as illustrated in FIG. 1a, when the first and second magnetic bodies (16, 17) are aligned in a line along the second direction (Y), that is, when their respective centers are aligned along the second direction (Y), the second inclined surface (15) of the transfer block (14) and the first inclined surface (13) of the sliding block (12) can remain in contact with each other.
[0047] In the state of FIG. 1a above, when an external force (F1) is applied to the transfer block (14), the external force (F1) is distributed into a horizontal force (Fh) and a vertical force (Fv) by the first and second inclined surfaces (13, 15). At this time, since the horizontal force (Fh) is completely absorbed by the sliding block (12) fixed on the base part (11), only the vertical force (Fv) remains.
[0048] That is, the external force (F1) applied to the transfer block (14) results in only a vertical force (Fv) remaining due to the contact state of the inclined surfaces (13, 15). At this time, a predetermined attractive force (Fm) acts between the first and second magnetic bodies (16, 17), and if the acting attractive force (Fm) is greater than the vertical force (Fv), the transfer block (14) maintains the fixed state of FIG. 1a even when the external force (F1) is applied.
[0049] Hereinafter, the operation of the safety detachable module (10) of FIG. 1a will be explained with reference to FIG. 1b and FIG. 1c.
[0050] As explained above, as shown in FIG. 1a, even if a predetermined external force (F1) is applied to the transfer block (14), if the attractive force (Fv) between the magnetic bodies (16, 17) is greater than the dispersion force (Fv) in the vertical direction of the external force (F1), the transfer block (14) remains fixed on the base part (11) by the attractive force.
[0051] In addition, as shown in FIG. 1b, even if the transfer block (14) is instantaneously slid along the sliding block (12) and its position is varied according to the external force (F1), if the dispersion force (Fv) in the vertical direction of the external force (F1) is less than or equal to the magnetic force, i.e., the attraction force (Fm), the transfer block (14) returns to the position shown in FIG. 1a by the magnetic force, and thus the transfer block (14) is positioned in a fixed state on the base part (11).
[0052] However, as shown in FIG. 1c, if the magnitude of the external force (F2) applied to the transfer block (14) increases and the vertical dispersion force (Fv) of the external force (F2) is greater than the attractive force (Fm), the transfer block (14) slides along the first inclined surface (13) of the sliding block (12) by the vertical dispersion force (Fv). Thus, the transfer block (14) moves upward, and the fixed state with the base part (11) is naturally released.
[0053] In particular, in the case of a magnetic force release state as in FIG. 1c, when the transfer block (14) begins to move and the alignment state between the first and second magnetic bodies (16, 17) is released and they begin to separate from each other, the attractive force (Fm) acting between the first and second magnetic bodies (16, 17) decreases rapidly, and therefore the transfer block (14) can be rapidly separated from the base part (11) by the dispersion force (Fv) in the vertical direction of the external force (F2).
[0054] As described above, in the case of the safety detachable module (10) according to the present embodiment, if the external force (F1 or F2) applied to the transfer block (14) in the horizontal direction is larger than a preset size, the transfer block (14), which is in a fixed state due to the attractive force (Fm) between the first and second magnetic bodies (16, 17), is released, and the transfer block (14) is separated from the base part (11).
[0055] Accordingly, in the case of the safety detachment module (10) according to the present embodiment, the transfer block (14) is configured to be rapidly separated from the base part (11) when an external force greater than a preset external force is applied, thereby preventing problems such as safety accidents that may occur while the transfer block (14) is fixed to the base part (11).
[0056] FIG. 2 is a perspective view illustrating a needle insertion device with the safety detachment module of FIG. 1a applied thereto. FIG. 3 is a perspective view illustrating the needle insertion device of FIG. 1 from a different direction. FIG. 4 is a side view illustrating the transfer unit of FIG. 2. FIG. 5 is a perspective view illustrating the driving unit of FIG. 2. FIG. 6 is a bottom perspective view illustrating the transfer unit of FIG. 2.
[0057] With reference to FIGS. 2 to 6, a needle insertion device (20) to which the safety detachable module (10) described above in FIG. 1a is applied will be described in detail.
[0058] As previously explained, the safety detachable module (10) can be applied to the needle insertion device (20) as is, and the base part (11), sliding block (12), and transfer block (14) of the safety detachable module (10) can be applied to the fixed block (140), sliding block (141), and transfer block (230) of the needle insertion device (20) with substantially the same structure as described below.
[0059] More specifically, the needle insertion device (20) includes a driving unit (100) and a transfer unit (200).
[0060] The above driving unit (100) provides a predetermined driving force to move the above transfer unit (200) in a first direction (X), and includes a base part (110), a driving part (120), a driving shaft (121), a shaft fixing part (130), a fixing block (140), a sliding block (141), a fixing frame (150), and a central frame (160).
[0061] The base portion (110) extends in the first direction (X) overall and forms a predetermined area on the XY plane so that the transfer unit (200) can be mounted on the upper part. In the case of the base portion (110), as illustrated, a predetermined opening (111) is formed in the center, and the fixing block (140), which will be described later, extends through the opening (111).
[0062] At this time, it is obvious that the overall extension length, area, and shape of the base part (110) can be varied in many ways.
[0063] The above driving unit (120) is located on one side of the lower part of the base unit (110) and generates driving force. The driving unit (120) may be, for example, a driving motor that generates rotational driving force, and the rotational driving force generated by the driving unit (120) is transmitted to the driving shaft (121). That is, the driving shaft (121) is extended for a predetermined length along the first direction (X), and can transmit the rotational driving force provided by the driving unit (120) as linear driving force. To this end, the driving shaft (121) may be composed of a so-called linear screw.
[0064] The shaft fixing part (130) fixes each side of the drive shaft (121) to maintain a stable extended state of the drive shaft (121), thereby stably transmitting the linear driving force of the drive shaft (121) to the transfer unit (200).
[0065] The fixed block (140) is connected to the drive shaft (121) between the pair of shaft fixing parts (130), and when the rotational driving force of the drive part (120) is transmitted as a linear driving force by the drive shaft (121), the fixed block (140) moves linearly along the drive shaft (121) in the first direction (X) within a predetermined range.
[0066] At this time, the fixed block (140) is connected to the fixed shaft (121) and extends along the third direction (X), passing through the opening (111) formed in the base part (110) and extending to the upper part of the base part (110).
[0067] Additionally, the sliding block (141) is formed in the portion extending upward from the base portion (110) of the fixed block (140). At this time, the sliding block (141) may be structured to be coupled to the upper surface of the fixed block (140), but it may also be formed integrally with the fixed block (140).
[0068] Meanwhile, as illustrated, the sliding block (141) has a surface facing the transfer unit (200) formed as a first inclined surface (142). At this time, the first inclined surface (142) may have substantially the same configuration as the first inclined surface (13) in the safety detachable module (10) shown in FIG. 1a.
[0069] Accordingly, the first inclined surface (142) of the sliding block (141) can also form a predetermined acute angle with respect to the first direction (X), and comes into contact with the second inclined surface (235) of the transfer block (130) described later.
[0070] The fixed frame (150) and the central frame (160) are frames to which the transfer unit (200) is connected, and both the fixed frame (150) and the central frame (160) are fixed to the upper surface of the base part (110).
[0071] At this time, as illustrated, a pair of fixed frames (150) may be provided on both sides of the opening (111), and a central frame (160) may be provided on the front side of the opening (110), that is, on the front side toward the first direction (X). Thus, the fixed frames (150) and the central frames (160) fix the transfer guide (220) and the central guide (221) of the transfer unit (200) described later.
[0072] The above transfer unit (200) is transferred entirely in the first direction (X) by the driving of the above driving unit (100) and includes a transfer frame (210), a transfer guide (220), a central guide (221), a transfer block (230), a rotary link (240), a syringe (250), and a cover frame (260).
[0073] The above transfer frame (210) extends entirely along the first direction (X), and the main body (250) is mounted inside. The transfer frame (210) includes a horizontal frame (211), a vertical frame (212), a connecting frame (213), and a guide frame (214).
[0074] The horizontal frame (211) is extended a predetermined length along the first direction (X), the vertical frame (212) is extended a predetermined length along the third direction (Z) from one end of the horizontal frame (211), and the connecting frame (213) is mounted on the other end of the horizontal frame (211).
[0075] Accordingly, the transfer frame (210) forms a predetermined storage space on the upper part of the horizontal frame (211), and the syringe (250) is stored and fixed in the storage space. At this time, the cover frame (260) connected to the vertical frame (212) is formed in the storage space on the upper part of the transfer frame (210), and the syringe (250) is inserted into the interior of the cover frame (260).
[0076] Thus, the front end of the syringe (250) is positioned on the vertical frame (212) while being inserted into the interior of the cover frame (260), and the rear end of the syringe (250) is positioned toward the connecting frame (213).
[0077] At this time, a needle portion (251) is connected to the front end of the syringe (250), and as illustrated, the needle portion (251) penetrates the vertical frame (212) and protrudes a predetermined length toward the front end of the transfer frame (210). Although not illustrated, the needle portion (251) is inserted into the user's body to inject a drug stored in the syringe (250), or to store a predetermined body fluid from the body into the syringe (250).
[0078] The connecting frame (213) is connected to the other side, i.e., the rear end, of the horizontal frame (211), and secures the rear end of the syringe (250) after the syringe (250) is housed inside the cover frame (260). To this end, the connecting frame (213) may have a 'U'-shaped frame with an open top as illustrated.
[0079] The guide frame (214) is formed such that a pair of them protrude in a direction toward the second direction (Y) from the lower part of the connecting frame (213), and the transfer guide (220) is inserted on the guide frame (214).
[0080] As illustrated, the transfer guide (220) is extended in a predetermined length along the first direction (X) in a pair and may be extended to have a bar-like shape, but its shape is not limited. The transfer guide (220) is extended with one end fixed to the guide frame (214) and is positioned to be inserted onto the fixed frame (150) described above.
[0081] At this time, the transfer guide (220) is inserted into the fixed frame (150) and is transferred along the first direction (X) relative to the fixed frame (150). That is, the transfer guide (220) is fixed to the transfer unit (200) through the guide frame (214), and when the transfer unit (200) is transferred in the first direction (X) by the driving force of the aforementioned driving unit (120), it simultaneously moves in the first direction (X). In this case, since the transfer guide (220) moves in the first direction (X) while inserted into the fixed frame (150), the transfer unit (200) maintains a stable transfer direction in the first direction (X) overall.
[0082] That is, the transfer guide (220) and the fixed frame (150) perform the role of stably guiding the transfer of the transfer unit (200). In addition, since a pair of the transfer guide (220) and the fixed frame (150) are located on both sides of the horizontal frame (211), the transfer unit (200) can be stably guided to transfer in the first direction (X).
[0083] Additionally, as can be seen in FIG. 6, the central frame (160) is additionally provided on the upper part of the base portion (110), and a central guide (221) can be extended through the central frame (160). At this time, the central guide (221) can be fixed to the lower surface of the horizontal frame (211).
[0084] Accordingly, as the transfer unit (200) moves along the first direction (X), the central guide (221) can also be guided and moved by the central frame (160), and the central part of the transfer unit (200) can be guided to be transferred through the central frame (160).
[0085] As described above, the transfer unit (200) is guided to move along the first direction (X) in the center through the guide of the central frame (160) and the central guide (221), and in both sides through the guide of the fixed frame (150) and the transfer guide (220), thereby enabling it to move forward or backward only along the first direction (X) with greater reliability.
[0086] The above transfer block (230) is connected to the rear end of the connecting frame (213) so as to be rotatable with the connecting frame (213), and includes a central frame (231), a side frame (232), and a lower frame (234).
[0087] The central frame (231) forms the lower surface of the transfer block (230) in its entirety and extends along the second direction (Y) with a predetermined area, and the side frame (232) extends along the third direction (Z) from both ends of the central frame (231) along the second direction (Y). At this time, the side frame (232) extends as a pair as illustrated and may be formed to have an inverted triangle shape in its entirety to minimize interference with the connecting frame (213). That is, the transfer block (230) moves so as to be rotatable relative to the connecting frame (213), as will be described later, and at this time, the side frame (232) must not interfere with the connecting frame (213). Accordingly, the side frame (232) is formed to have an inverted triangle shape, for example, to minimize the interference, and as long as the interference is minimized, its shape is not limited.
[0088] The lower frame (234) is formed in a block shape on the lower surface of the central frame (231), and as illustrated, a second inclined surface (235) is formed. The second inclined surface (235) faces the first inclined surface (142) and is formed on the lower frame (234) while forming an outer angle substantially identical to the angle formed by the first inclined surface (142). As described later, the second inclined surface (235) is positioned in contact with the first inclined surface (142) when the transfer unit (200) is transferred normally, and thus the linear driving force generated by the driving unit (100) is transmitted to the transfer unit (200) through the first and second inclined surfaces (142, 235).
[0089] At this time, referring to FIG. 7a described later, when the transfer unit (200) is transferred normally, the upper surface of the sliding block (141) on which the first inclined surface (142) is formed and the lower surface of the lower frame (234) on which the second inclined surface (235) is formed are positioned in contact with each other. That is, at the same time as the first and second inclined surfaces (142, 235) are positioned in contact with each other, the upper surface of the sliding block (141) and the lower surface of the lower frame (234) are also positioned in contact with each other.
[0090] Additionally, a first magnetic body (190) is provided on the upper surface of the sliding block (141), and a second magnetic body (290) is provided on the lower surface of the lower frame (234). Thus, the first magnetic body (190) and the second magnetic body (290) exert an attractive force on each other as magnetic force to maintain the attachment state between the sliding block (141) and the lower frame (134).
[0091] As described above, the sliding block (141) and the lower frame (134) can eventually be maintained in a fixed state, that is, attached to each other, by means of the attractive force between the first and second magnetic bodies (190, 290), and thus the linear driving force in the first direction (X) transmitted through the fixed block (140) can be transmitted to the transfer unit (200).
[0092] The above-mentioned rotating link (240) is connected to the side frame (232) and the connecting frame (213), so that the transfer block (230) can rotate relative to the side frame (232).
[0093] That is, in the above-mentioned rotating link (240), the first rotating part (241), which is one end, is rotatably connected to the side frame (232), and the second rotating part (242), which is the other end, is rotatably connected to the connecting frame (213). At this time, as illustrated, a pair of the rotating links (240) are provided on one side, and a total of two pairs may be provided. This is selected to induce a stable connection and stable rotation between the transfer block (230) and the connecting frame (213), and it is obvious that the number can vary depending on the area and structure of the transfer block (230) and the connecting frame (213).
[0094] Through the connection of the above-mentioned rotary link (240), when an unexpected large external force is transmitted to the transfer unit (200), the transfer block (230) can be rotated relative to the transfer frame (210), and through this rotation of the transfer block (230), the driving unit (100) and the transfer unit (200) are separated from each other. A detailed description of this driving state will be provided later.
[0095] FIGS. 7A and FIGS. 7B are side views illustrating the state in which the needle insertion device of FIG. 2 is safely operated.
[0096] First, referring to FIG. 7a, when the driving force provided by the driving unit (100) is fully transmitted to the transfer unit (200) (hereinafter referred to as the initial state), the transfer unit (200) advances in the first direction (X) by the linear driving force of the driving unit (100) in the first direction (X).
[0097] That is, in the initial state, the rotation unit (240) does not rotate and extends horizontally along the first direction (X), and the second magnetic body (290) provided on the lower surface of the lower frame (234) is fixed to the first magnetic body (190) provided on the upper surface of the sliding block (141) by magnetic force. In addition, the first and second inclined surfaces (141, 235) are also positioned in contact with each other.
[0098] In this initial state, the driving force provided by the driving unit (120) is converted into a linear driving force of the fixed block (140), and the linear driving force is transmitted directly to the transfer block (230) through the fixed block (140). Accordingly, the transfer unit (200) advances in the first direction (X) in accordance with the driving of the driving unit (120).
[0099] Meanwhile, when the above-mentioned transfer unit (200) advances in the first direction (X), the syringe (250) mounted on the above-mentioned transfer unit (200) also advances simultaneously in the first direction (X), and the needle part (251) is inserted into the user's body. In this case, during the process of the needle part (251) being inserted into the user's body, a predetermined external force (F) is transmitted to the needle part (251) in the negative first direction (-X), and this external force is eventually transmitted to the above-mentioned transfer block (230).
[0100] The operation of the transfer block (230) as such external force (F) is transmitted to the transfer block (230) is substantially the same as described above with reference to FIGS. 1a and 1b. That is, the horizontal component (Fh) of the external force (F) is transmitted to the sliding block (141) through the first and second inclined surfaces (141, 235), and the sliding block (141) counteracts it. Accordingly, the transfer block (230) receives only an external force equal to the vertical component (Fv) of the external force (F), and the vertical component (Fv) of the external force (F) is counteracted by the magnetic force between the first and second magnetic bodies (190, 290).
[0101] Accordingly, when the vertical component (Fv) of the external force (F) is equal to or less than the magnetic force, the transfer block (230) maintains the initial state of FIG. 7a regardless of the application of the external force (F). That is, when the external force (F) applied to the needle part (251) is in a range where the magnitude of the vertical component of the external force (F) is less than or equal to the magnitude of the magnetic force, the needle part (251) continuously advances in the first direction (X) by the driving force of the driving unit (200).
[0102] However, as shown in FIG. 7b, when the magnitude of the vertical component of the external force (F) applied to the needle part (251) is greater than the magnitude of the magnetic force, the transfer block (230) cannot be fixed through the magnetic force, and the transfer block (230) slides and rises along the first inclined surface (141) due to the force of the vertical component of the external force (F). At this time, when the transfer block (230) starts sliding, the magnetic force may have some influence, but as the distance between the second magnetic body (190) and the first magnetic body (190) increases, the magnetic force disappears instantly, and the transfer block (230) rises along the first inclined surface (141).
[0103] In addition, along with the upward movement of the first inclined surface (141) of the transfer block (230), the transfer block (230) rotates clockwise with respect to the connecting frame (213) around the second direction (Y), thereby completely releasing the contact state between the transfer block (230) and the fixed block (140). Furthermore, with the release of this contact state, as the external force (F) is continuously applied, the transfer frame (210) retracts in the direction of the arrow.
[0104] Ultimately, in a state like Fig. 7b, the driving force generated from the driving unit (100) is transmitted only to the fixed block (140), and the linear driving force of the fixed block (140) is not transmitted to the transfer block (230). Therefore, the driving transmission state between the transfer unit (200) and the driving unit (100) is released, and forward movement in the first direction (X) is not performed. That is, the transfer unit (200) and the driving unit (100) are separated from each other.
[0105] At the same time, as contact with the sliding block (141) supporting the transfer block (230) is released, the transfer frame (210) moves in the negative first direction (-X), that is, retracts in the first direction, due to the external force (F).
[0106] Looking at the operation of FIGS. 7a and FIGS. 7b as described above, if the external force (F) applied through the needle part (251) is calculated in advance when the needle part (251) is inserted into a preset position of the body, and the magnitude of the attractive force acting between the first and second magnetic bodies (190, 290) is set in consideration of the calculated external force (F), then the transfer frame (210) can be set to immediately retract if the needle part (251) is not safely inserted into a preset position.
[0107] That is, if the needle part (251) is inserted into a position other than a pre-set position of the body or is located in an unexpected skeletal structure or the like inside the body, and the external force (F) applied to the needle part (251) is greater than the pre-set external force, the transfer block (230) immediately rotates so that contact with the fixed block (140) is released, and accordingly, the needle part (251) is restricted from advancing in the first direction (X) regardless of the operation of the driving unit (100), and instead retracts in the first direction (X).
[0108] Thus, insertion of the needle part (251) into an abnormal position is restricted, thereby maintaining the user's safety.
[0109] According to the embodiments of the present invention as described above, through magnetic bodies aligned in a vertical direction and a structure forming an inclined surface, a fixing force can be provided up to a preset range against an external force in a horizontal direction, and when an external force greater than the preset range is applied, the module can be implemented to slide along the inclined surface, thereby enabling the implementation of a predetermined safety detachable module.
[0110] In particular, when an external force exceeding a preset range is applied, the alignment state between the magnetic bodies is released, causing a rapid decrease in magnetic force, which allows for easy separation, i.e., transport along an inclined plane, thereby enabling instantaneous detachment. That is, when an external force exceeding a preset range is applied, the transport block is induced to move away from its fixed position, thereby enabling a safe state.
[0111] For example, when a safety detachment module as described above is provided in a needle insertion device, when inserting the needle part into the body, if an external force exceeding a preset external force is applied, the needle part is restricted from moving further toward the body, thereby minimizing the occurrence of safety accidents. That is, if the needle part is not inserted into the correct position and an unexpected external force is applied to the needle part, the needle part can be separated from the driving unit that transports the needle part, and the movement of the needle part can be restricted regardless of the operation of the driving unit, thereby minimizing the occurrence of safety accidents.
[0112] That is, in the above needle insertion device, the syringe equipped with the needle portion is mounted on the transfer unit, and the transfer unit is provided with driving force by the driving unit and slides in a first direction so that the needle portion is inserted into the body. At this time, the transfer unit and the driving unit each maintain a fixed state by the fixing force between the transfer block and the sliding block, which each have an inclined surface. However, if the external force applied to the needle portion is greater than the fixing force, the transfer block rises along the inclined surface, and thus, even if the driving unit is driven, the transfer unit is restricted from moving in the first direction. Accordingly, if the needle portion is incorrectly inserted into the body and an unexpectedly large external force is transmitted, the movement of the needle portion in the needle insertion device is restricted, thereby preventing problems such as safety accidents.
[0113] Meanwhile, when the transfer block rises along the inclined surface as described above, the rotating link included in the transfer block rotates relative to the transfer frame, thereby restricting the needle part from further entering in the first direction and fixing its position.
[0114] Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the invention without departing from the spirit and scope of the invention as set forth in the following claims. Explanation of the symbols
[0115] 10 : Safety detachable module 11, 110 : Base part 12, 141 : Sliding block 13, 142: First slope 14, 230 : Transfer block 15, 235 : Second slope 16: First magnetic body 17: Second magnetic material 20: Needle insertion device 100 : Drive unit 120 : Drive unit 140 : Fixed block 200 : Transfer unit 210: Transfer frame 220 : Transfer Guide 240 : Rotating link 241, 242: Rotating part 250 : Syringe 260 : Cover Frame
Claims
Claim 1 A safety detachable module comprising: a base portion extending in a first direction and equipped with a first magnetic body; a sliding block having a first inclined surface inclined toward the first direction and fixed on the base portion; and a transfer block having a second inclined surface facing the first inclined surface and receiving an attractive force from the first magnetic body in a second direction perpendicular to the first direction. Claim 2 A safety detachable module according to claim 1, characterized in that the transfer block is provided with a second magnetic body positioned to be aligned with the first magnetic body in the second direction. Claim 3 A safety detachable module according to claim 2, characterized in that when an external force in the first direction is applied to the transfer block and the alignment of the first magnetic body and the second magnetic body in the second direction is misaligned, the transfer block is transferred along the first inclined surface. Claim 4 A safety detachable module according to claim 1, characterized in that, as an external force is applied to the transfer block in the first direction, the external force is dispersed in the second direction by the second inclined surface, and when the external force dispersed in the second direction is equal to or smaller than the force, the transfer block comes into contact with the first inclined surface and its position is fixed. Claim 5 A safety detachable module according to claim 1, characterized in that, as an external force is applied to the transfer block in the first direction, the external force is dispersed in the second direction by the second inclined surface, and when the external force dispersed in the second direction is greater than the force, the transfer block is transferred along the first inclined surface. Claim 6 A needle insertion device comprising: a transfer unit equipped with a syringe to which a needle portion is connected; and a driving unit for transferring the transfer unit in a first direction, wherein when an external force exceeding a preset external force is applied to the needle portion, the transfer unit is disconnected from the driving unit and the transfer of the needle portion in the first direction is restricted. Claim 7 A needle insertion device according to claim 6, wherein the driving unit comprises: a fixed block that is moved in the first direction according to the provision of driving force; and a sliding block that is fixed on the fixed block and has a first inclined surface. Claim 8 A needle insertion device according to claim 7, wherein the transfer unit comprises: a transfer frame on which the syringe is mounted; and a transfer block rotatably connected to the transfer frame and having a second inclined surface facing the first inclined surface. Claim 9 A needle insertion device according to claim 8, characterized in that when an external force less than or equal to a preset external force is applied to the needle portion, the first inclined surface and the second inclined surface are in contact with each other according to the provision of the driving force, and the transfer block is also moved according to the movement of the sliding block. Claim 10 A needle insertion device according to claim 8, characterized in that when an external force greater than the external force preset to the needle part is applied, the transfer block is transferred along the first inclined surface and rotates relative to the transfer frame, thereby restricting the transfer of the needle part in the first direction. Claim 11 A needle insertion device according to claim 8, characterized in that the sliding block is provided with a first magnetic body, and the transfer block is provided with a second magnetic body aligned with the first magnetic body. Claim 12 A needle insertion device according to claim 11, characterized in that when an external force is applied to the needle portion in the first direction, the external force is dispersed in a second direction perpendicular to the first direction by the second inclined surface, and the external force dispersed in the second direction is offset by an attractive force acting between the first and second magnetic bodies. Claim 13 A needle insertion device according to claim 12, characterized in that when the external force distributed in the second direction is equal to or smaller than the attractive force, the needle part is transported in the first direction, and when the external force distributed in the second direction is greater than the attractive force, the transport of the needle part in the first direction is restricted. Claim 14 A needle insertion device according to claim 8, wherein the transfer block comprises: a central frame on which the second inclined surface is formed; side frames extending from both sides of the central frame; and a rotating link extending rotatably between the side frames and the transfer frame. Claim 15 A needle insertion device according to claim 8, wherein the driving unit further includes a base portion having an opening through which the transfer unit is mounted on the upper part and the fixed block passes, and the transfer unit further includes a transfer guide located on the base portion to guide the transfer of the transfer frame.