Syringe with trace boosting device

Abstract

The utility model provides an injector with a micro boosting device. The micro boosting device comprises a first positioning block and a second positioning block, the first positioning block is arranged on the curled edge of the injector, and the first positioning block protrudes towards one side close to the pressing handle of the injector to form a mounting part; the second positioning block is detachably mounted on the mounting part, and a cushion block part of which the thickness is matched with the injection distance is formed between the injector pressing handle and the mounting part by the second positioning block; the second positioning block is also provided with an insertion block part with the same thickness as the cushion block part, and the second positioning block forms a groove between the cushion block part and the insertion block part; one end, close to the injector pressing handle, of the mounting part protrudes outwards to form a guide rail matched with the groove; the thickness of the cushion block part is the same as that of the insertion block part, and the thickness is the required injection distance, so that no matter the second positioning block is installed in the forward direction or the reverse direction, the distance of the second positioning block protruding out of the installation part is kept unchanged all the time, and the installation convenience of the second positioning block is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a syringe with a micro-boosting device. Background Art

[0002] In the medical field, syringes with scales are usually used for drug preparation or drug injection. Users need to carefully check the scales during each injection to avoid problems such as excessive or insufficient injection. This process has relatively high requirements for users. In addition, the minimum scale of current syringes is usually 0.1 mL, which cannot meet the micro-injection requirements of drugs such as insulin (micro-injection is generally 50 μL, 100 μL, etc.).

[0003] The invention patent of CN114887157A discloses an injection device and its use method without changing the original structure of the syringe. A first positioning block is inserted on the curl of the syringe barrel, and a second positioning block is inserted on the first positioning block, so that the pressing hand on the push rod contacts the second positioning block, and this contact position is used as the injection starting position; then the second positioning block is removed, and the pressing hand is pressed until the pressing hand contacts the first positioning block to complete micro-injection; although the injection device of this invention patent can improve the accuracy of micro-injection and reduce the difficulty of micro-injection, when installing the second positioning block, the front and back sides need to be considered, which is not conducive to the rapid installation of the second positioning block. Summary of the Utility Model

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present utility model is to provide a syringe with a micro-boosting device, which does not need to consider the front and back directions when installing the second positioning block, and effectively improves the installation efficiency of the second positioning block.

[0005] To achieve the above object and other related objects, the present utility model provides a syringe with a micro-boosting device. The micro-boosting device includes a first positioning block and a second positioning block; the first positioning block is arranged on the curl of the syringe, and the first positioning block protrudes towards the side close to the syringe pressing hand to form an installation part; the second positioning block is detachably installed on the installation part, and the second positioning block forms a cushion block part with a thickness matching the injection distance between the syringe pressing hand and the installation part; the second positioning block also has an insertion block part with the same thickness as the cushion block part, and the second positioning block forms a groove between the cushion block part and the insertion block part; one end of the installation part close to the syringe pressing hand protrudes outwards to form a guide rail matching the groove; since the thicknesses of the cushion block part and the insertion block part are the same and the thickness is the required injection distance, no matter the second positioning block is installed forward or backward, the distance protruding from the installation part after installation always remains unchanged, improving the installation convenience of the second positioning block.

[0006] Preferably, the second positioning block is integrally U-shaped and has a lateral slot for plugging and cooperating with the installation part to improve the installation stability of the second positioning block.

[0007] Preferably, two holding parts are provided on the outer side wall of the second positioning block, and the two holding parts are symmetrically arranged so that the operator's fingers can hold the two holding parts to disassemble and assemble the second positioning block.

[0008] Preferably, the holding part includes a holding portion and two connecting arms spaced apart on the holding portion, and the holding portion is connected to the second positioning block through the connecting arms; since there is a notch between the two connecting arms of the holding part, the thickness uniformity during the molding of the second positioning block can be effectively improved.

[0009] Preferably, the holding portion has a cantilever-shaped pressing end. When the two pressing ends approach each other, the opposite side walls of the lateral slot open outward to reduce the difficulty of removing the second positioning block.

[0010] Preferably, a pressing surface is provided on the pressing end, and the pressing surface is an anti-slip surface to avoid slipping during pressing.

[0011] Preferably, the holding portion is integrally wavy to improve the aesthetics.

[0012] Preferably, a thinning groove for facilitating the opening of the lateral slot is provided on the side wall of the second positioning block, effectively reducing the difficulty of opening the lateral slot.

[0013] Preferably, a first engaging member is provided on the inner wall of the lateral slot, and a second engaging member for engaging with the first engaging member is provided on the outer wall of the installation part; through the cooperation of the first engaging member and the second engaging member, the installation stability of the second positioning block can be effectively ensured.

[0014] As above, a syringe with a micro-boosting device of the present invention has the following beneficial effects:

[0015] 1) Since the injection start position and the injection end position are determined by the second positioning block and the first positioning block respectively, the problem of insufficient injection accuracy caused by error accumulation is effectively avoided.

[0016] 2) Since the thickness of the cushion block part and the plug block part is the same and is the required injection distance, no matter the second positioning block is installed forward or backward, the distance protruding from the installation part after installation always remains unchanged, improving the installation convenience of the second positioning block.

[0017] 3) Since the lateral slot of the second positioning block is a through slot structure and two holding parts are provided on the outer wall of the second positioning block, when the operator presses the pressing surfaces of the two holding parts simultaneously, the two side walls of the lateral slot will open outward, effectively reducing the difficulty of removing the second positioning block. Brief Description of the Drawings

[0018] Figure 1 Fig. 1 is a perspective view of a syringe with a micro-boosting device.

[0019] Figure 2 Fig. 2 is an isometric sectional view of a syringe with a micro-boosting device.

[0020] Figure 3 Fig. 3 is a perspective view of the first positioning block.

[0021] Figure 4 Fig. 4 is a perspective view of the second positioning block from the first perspective.

[0022] Figure 5 Fig. 5 is a perspective view of the second positioning block from the second perspective.

[0023] Figure 6 Fig. 6 is a top view of the second positioning block.

[0024] Figure 7 Fig. 7 is a preparation process diagram of the syringe with a micro-boosting device before use.

[0025] Description of the Reference Numerals

[0026] Syringe 1, syringe barrel 11, curled edge 111, piston 12, push rod 13, syringe push button 14, micro-boosting device 2, first positioning block 21, curled edge slot 21a, mounting portion 211, push rod avoidance slot 211a, guide rail 212, clamping protrusion 213, second positioning block 22, lateral slot 22a, pad portion 221, insert block portion 222, groove 223, clamping groove 224, hand-held member 225, finger groove 225a, hand-held portion 2251, pressing surface 22511, connecting arm 2252. Detailed Embodiment

[0027] The following specific embodiments illustrate the implementation manners of the present invention, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0028] Please refer to Figures 1 to 7It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the conditions under which the present utility model can be implemented. Therefore, they do not have substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present utility model can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in the present utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration and are not used to limit the scope in which the present utility model can be implemented. The change or adjustment of their relative relationships, without substantial change in the technical content, should also be regarded as the scope in which the present utility model can be implemented.

[0029] The syringe with a micro-boosting device involved in the present utility model can achieve precise control of the micro-injection of the syringe 1 through the micro-boosting device 2. For the convenience of narration, in the following embodiments, the axial direction of the syringe 1 in the vertical state is defined as the up-down direction.

[0030] In this application, the syringe 1 is a prior art, and its structure is as Figure 2 shown. The syringe 1 includes a syringe barrel 11, a piston 12, and a push rod 13; among them, the upper end of the syringe barrel 11 is an open end, and a plate-shaped curled edge 111 is formed at the open end; the lower end of the syringe barrel 11 is the liquid medicine inlet and outlet end, and the liquid medicine inlet and outlet end is used to install a needle; the piston 12 axially slides in the syringe barrel 11 in a sealed manner; the lower end of the push rod 13 extends into the syringe barrel 11 and is fixedly connected to the piston 12, and a plate-shaped syringe push button 131 is formed at the upper end of the push rod 13 for an operator to press; thus, by simply pushing and pulling the push rod 13, the liquid medicine can be sucked into or discharged from the syringe barrel 11.

[0031] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 7As shown, the micro-boosting device includes a first positioning block 21 and a second positioning block 22. Among them, the first positioning block 21 is arranged on the curled edge 111 of the syringe 1, and the top end of the first positioning block 21 protrudes upward (i.e., protrudes toward the side close to the syringe pressing hand 131) to form a mounting portion 211. The second positioning block 22 is detachably mounted on the mounting portion 211, and the second positioning block 22 includes a cushion block portion 221 and an insertion block portion 222 that are spaced apart in the up-down direction. The cushion block portion 221 and the insertion block portion 222 have the same thickness, and this thickness is matched with the injection distance L. The second positioning block 22 forms a groove 223 between the cushion block portion 221 and the insertion block portion 222, and the top end of the mounting portion 221 (i.e., the end close to the syringe pressing hand 131) protrudes outward to form a guide rail 212 that cooperates with the groove 223. Since the second positioning block 22 is connected to the guide rail 212 on the mounting portion 221 through the groove 223, and the cushion block portion 221 and the insertion block portion 222 have the same thickness. Therefore, whether the second positioning block 22 is installed on the mounting portion 221 in the forward direction (i.e., installed in the state where the cushion block portion 221 is on the top), or installed in the reverse direction (i.e., installed in the state where the cushion block portion 221 is at the bottom); the height of the second positioning block 22 protruding from the top of the mounting portion 221 remains unchanged all the time, so that the operator does not need to consider the front and back when installing the second positioning block 22, improving the convenience of installing the second positioning block 22.

[0032] The connection method between the first positioning block 21 and the curled edge 111 is a detachable connection or a non-detachable connection, and no limitation is made in this regard. In this embodiment, a detachable connection method is preferably adopted to realize the reuse of the first positioning block 21.

[0033] In a preferred embodiment, as Figure 2 and Figure 3 shown, a curled edge slot 21a that is inserted and cooperated with the curled edge 111 is provided on the side wall of the first positioning block 21, and a push rod avoidance groove 211a that is communicated with the curled edge slot 21a is provided on the side wall of the mounting portion 211. The push rod avoidance groove 211a is a through groove structure that penetrates up and down, and the notch direction of the push rod avoidance groove 211a is the same as the insertion direction of the curled edge slot 21a. In this way, when the curled edge slot 21a is laterally inserted into the curled edge 111 of the syringe barrel 11, the push rod 13 can smoothly enter the push rod avoidance groove 211a and can move up and down in the push rod avoidance groove 211a to complete the detachable connection between the first positioning block 21 and the syringe 1. In this embodiment, the first positioning block 21 is a gripping member formed with a handle. In order to ensure the molding quality of the first positioning block 21, both ends of the curled edge slot 21a in the direction perpendicular to the insertion and extraction direction need to extend in a follow-up manner to improve the thickness uniformity of the first positioning block 21.

[0034] In a preferred embodiment, as Figure 2 、 Figure 3 and Figure 4As shown, the second positioning block 22 is integrally U-shaped and has a lateral slot 22a that is inserted and cooperated with the mounting portion 212. The lateral slot 22a is a through slot structure that penetrates up and down, and the second positioning block 22 can be laterally inserted onto the mounting portion 221 of the first positioning block 21 through the lateral slot 22a; with such a setting, the vertical center line of the second positioning block 22 can be made to coincide as much as possible with the axis of the push rod 13, thereby increasing the contact area between the second positioning block 22 and the syringe pressing hand 131 and ensuring the installation stability of the second positioning block 22.

[0035] It can be understood that when the second positioning block 22 is laterally inserted into the mounting portion 211 of the first positioning block 21, the insertion direction of the lateral slot 22a can be the same as or opposite to the insertion direction of the curled edge slot 21a, and no limitation is made thereto. In this embodiment, a scheme in which the insertion direction of the lateral slot 22a is the same as that of the curled edge slot 21a is preferably adopted.

[0036] In a more specific embodiment, as Figures 3 to 5 shown, both the guide rail 212 and the groove 223 are U-shaped, effectively increasing the installation stability of the second positioning block 22.

[0037] For the convenience of disassembling and assembling the second positioning block 22, as Figures 4 to 6 shown, two holding parts 225 are formed on the outer side wall of the second positioning block 22; the two holding parts 225 are symmetrically arranged with respect to the lateral slot 22a, and a finger groove 225a that fits the finger is formed on the holding part 225 to improve the operation comfort of the operator.

[0038] In a preferred embodiment, as Figure 6 shown, the holding part 225 includes a holding portion 2251 and two connecting arms 2252 that are spaced apart on the holding portion 2251. The holding portion 2251 is connected to the second positioning block 22 through the connecting arms 2252, and the finger groove 225a is located on the side of the holding portion 2251 away from the connecting arms 2252; since the two connecting arms 2252 are spaced apart to form a notch, when the second positioning block 22 and the holding part 225 are integrally formed, this notch can effectively reduce the influence of thermal expansion and contraction on the formed part and improve the forming quality; in this embodiment, the holding portion 2251 is integrally wavy to improve the aesthetics of the holding portion 2251.

[0039] In actual operation, in order to prevent the second positioning block 22 from sliding off the mounting portion 211 under the action of gravity when the insertion opening of the lateral slot 22a faces upward; as Figure 3 and Figure 4As shown, two sets of first engaging members are provided on the inner wall of the lateral slot 22a, and the two sets of first engaging members are symmetrically arranged with respect to the groove 223; each set of first engaging members includes two first engaging members symmetrically arranged with respect to the axis of the push rod, and the first engaging members are preferably arranged at positions close to the socket of the lateral slot 22a; a second engaging member that engages with the first engaging member is provided on the outer wall of the mounting portion 211; one of the first engaging member and the second engaging member is an engaging protrusion 213, and the other is an engaging groove 224; when the second positioning block 22 is inserted in place, the first engaging member on the inner wall of the lateral slot 22a will engage with the second engaging member on the outer wall of the mounting portion 211 to limit the insertion and removal of the second positioning block 22.

[0040] However, under the engagement restriction of the first engaging member and the second engaging member, it is very difficult to remove the second positioning block 22; in order to reduce the difficulty of removing the second positioning block 22, as Figure 6 shown, one end of the handheld portion 2251 away from the socket of the lateral slot 22a is a cantilever end, and this cantilever end is a pressing end; when the operator presses the pressing ends of the two handheld portions 2251 simultaneously, the opposite side walls of the lateral slot 22a will rotate outward to make the lateral slot 22a open, thereby reducing the difficulty of removing the second positioning block 22.

[0041] A pressing surface 22511 is provided on the pressing end, and the pressing surface 22511 is an anti-slip surface, so that when the operator applies pressure to the two pressing surfaces 22511, the two pressing ends can approach each other, thereby causing the opposite side walls of the lateral slot 22a to rotate outward and open, so as to achieve the purpose of reducing the difficulty of removing the second positioning block 22.

[0042] In order to further reduce the difficulty of opening the lateral slot 22a, as Figure 6 shown, a thinning groove 226 for facilitating the opening of the lateral slot 22a is provided on the side wall of the second positioning block 22, and the thinning groove 226 is located on the side wall of the second positioning block 22 away from the socket of the lateral slot 22a.

[0043] When micro-injection is required, as Figure 7 shown, the micro-boosting device 2 needs to be laterally inserted onto the curled edge 111 of the syringe barrel 11 first, so that the micro-boosting device 2 is installed on the syringe 1 filled with pre-filled liquid medicine; then press the syringe button 131 to make the syringe button 131 contact with the second positioning block 22 to determine the injection starting position. At this time, the distance between the top of the second positioning block 22 and the top of the mounting portion 221 is L; then remove the second positioning block 22 to complete the preparation work before injection.

[0044] The operator presses the syringe handle 131 for formal injection. When the syringe handle 131 contacts the top end of the installation part 211, it indicates that the syringe handle 131 has reached the injection end position, and the moving stroke is the distance L. Since during the entire injection process, the accuracy of the injection dose is only affected by the machining error of the inner diameter of the syringe barrel 11 and the assembly error of the two positioning blocks, the accuracy of the injection dose is relatively high, which is beneficial to meeting the requirements of high-precision micro-injection.

[0045] In summary, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0046] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A syringe with a micro-boosting device, the micro-boosting device comprising a first positioning block (21) and a second positioning block (22); the first positioning block (21) is arranged on the curling edge (111) of the syringe (1), and the first positioning block (21) protrudes toward the side close to the syringe handle (131) to form a mounting portion (211); the second positioning block (22) is detachably mounted on the mounting portion (211), and the second positioning block (22) forms a cushion block portion (221) with a thickness matching the injection distance between the syringe handle (131) and the mounting portion (211); characterized in that, The second positioning block (22) also has an inserting block portion (222) having the same thickness as the cushion block portion, and the second positioning block (22) forms a groove (223) between the cushion block portion (221) and the inserting block portion (222); one end of the mounting portion (211) close to the syringe handle (131) protrudes outward to form a guide rail (212) that cooperates with the groove (223).

2. A syringe with a micro-boosting device according to claim 1, characterized in that: The second positioning block (22) is U-shaped as a whole and has a lateral slot (22a) that is plugged into and matched with the mounting portion (211).

3. A syringe with a micro-boosting device according to claim 2, characterized in that: Two hand-held pieces (225) are provided on the outer side wall of the second positioning block (22), and the two hand-held pieces (225) are symmetrically arranged.

4. The syringe with a micro-boosting device according to claim 3, characterized in that: The handheld component (225) comprises a handheld portion (2251) and two connecting arms (2252) arranged at intervals on the handheld portion (2251); the handheld portion (2251) is connected to the second positioning block (22) via the connecting arms (2252).

5. The syringe with a micro-boosting device according to claim 4, characterized in that: The handheld portion (2251) has a cantilevered pressing end; when the two pressing ends are brought close to each other, the two opposite side walls of the lateral slot (22a) open outwards.

6. The syringe with a micro-boosting device according to claim 5, characterized in that: The pressing end is provided with a pressing surface (22511), and the pressing surface (22511) is an anti-slip surface.

7. A syringe with a micro-boosting device according to claim 4, 5 or 6, characterized in that: The hand-held portion (2251) is wavy in shape as a whole.

8. A syringe with a micro-boosting device according to claim 4 or 5, characterized in that: A thinning groove (226) is provided on the side wall of the second positioning block (22) to facilitate the opening of the lateral slot (22a).

9. The syringe with a micro-boosting device according to claim 2, characterized in that: A first clamping piece is provided on the inner wall of the lateral slot (22a), and a second clamping piece engaged with the first clamping piece is provided on the outer wall of the mounting portion (211).

10. The syringe with a micro-boosting device according to claim 9, characterized in that: One of the first clamping member and the second clamping member is a clamping protrusion (213), and the other is a clamping groove (224).

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