Syringe auxiliary device

Abstract

To solve a problem that an existing injector auxiliary device cannot adjust the length of a needle exposed out of the auxiliary device.SOLUTION: The injector auxiliary device comprises an accommodating chamber, a sliding cover, and a holder used for fixing an injector. A baffle plate is arranged at the tip of the accommodating chamber, and a first through hole through which a needle of the injector penetrates is formed in the baffle plate. A plurality of scale engagement grooves representing different scales are formed in the accommodating chamber, along the length direction of the accommodating chamber, and the scale engagement grooves are formed at preset intervals. The scale engagement grooves are perpendicular to the axis direction of the first through hole. Engagement plates matched with the scale engagement grooves are arranged on the bottom face of the tip of the holder, and the engagement plates are engaged in the scale engagement grooves. The sliding cover is arranged slidably on the outer side wall of the accommodating chamber, and the interior of the sliding cover is connected to the interior of the accommodating chamber. A push rod used for abutting against a piston rod of the injector is fixedly connected to the interior of the sliding cover, and the sliding cover can be driven to do linear reciprocating motion relative to the accommodating chamber.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to the technical field in which syringe-assist devices are designed, and more particularly to syringe-assist devices. [Background technology]

[0002] A conventional syringe generally consists of a syringe with a small hole at the tip and a piston rod that fits in with it, and the tail of the syringe is generally provided with a flange for the user to grip. Because the volume of the syringe is small, it is difficult to grip the flange part of the tail of the syringe by hand in actual operation. Patients with chronic diseases must receive frequent injections of medicine, and because the injection frequency is high, patients with chronic diseases usually inject their medicines themselves. However, due to the structure of the conventional syringe itself, it is difficult for non-professional medical personnel to operate it, and therefore, various syringe assisting devices are currently on the market to reduce the difficulty of injection for non-professionals. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3143302 [Patent Document 2] Japanese Patent Application Laid-Open No. 2017-189515 [Patent Document 3] Special Publication No. 2017-505218 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional syringe assisting devices generally include a chamber for accommodating a syringe and a sliding member for pushing the syringe's piston rod. When the syringe is placed in the chamber, the syringe's needle is exposed from the assisting device, allowing the user to inject a drug into the body. Because there are many types of conventional syringes (e.g., Patent Documents 1 to 3 listed above), the length of the needle exposed from the assisting device after different types of syringes are placed in the chamber also varies. For example, the exposed length of the needle of a certain type of syringe may be 1 cm, 3 cm, etc. Medical standards stipulate a certain depth for the needle to be inserted into the skin. For example, the optimal depth for a needle to be inserted into the skin is 2 cm. When using conventional assisting devices to inject into the body, an average user may not be able to determine the depth of the needle to be inserted into the skin, which could result in the needle being inserted too deeply or too shallowly.

[0005] Therefore, finding an injection assisting device to solve the above technical problems has become an important research topic for those skilled in the art.

[0006] The embodiments of the present invention disclose a syringe assist device to solve the technical problem that the conventional syringe assist device does not allow adjustment of the length of the needle exposed to the assist device. [Means for solving the problem]

[0007] An embodiment of the present invention provides a syringe assist device, comprising a chamber, a sliding cover, and a holder for securing a syringe; a baffle plate is provided at the tip of the storage chamber, and a first through hole is provided in the baffle plate for a syringe needle to pass through; a plurality of scale engagement grooves representing different scales are provided in the storage chamber along its length (longitudinal direction), and the scale engagement grooves are perpendicular to the axial direction of the first through hole; an engagement plate that aligns with the scale engagement grooves is provided on the bottom surface of the tip of the holder, and the engagement plate is engaged within the scale engagement groove; the slide cover is slidably mounted on an outer wall of the storage chamber, the interior of the slide cover communicates with the interior of the storage chamber, a push rod to be brought into contact with a piston rod of a syringe is fixedly connected to the interior of the slide cover, and the slide cover is driven to move linearly back and forth relative to the storage chamber, When the slide cover moves toward the baffle plate, the push rod pushes the piston rod so as to eject the medicine in the syringe from the needle.

[0008] Preferably, the rear end of the holder is provided with an arcuate engaging groove for engaging the outer wall of the syringe.

[0009] Preferably, a locking hook is provided on each of the inner side walls of the interior of the accommodating chamber, and the two locking hooks are engaged with opposite sides of the holder, respectively.

[0010] Preferably, the device further includes a cap, a second through hole is formed in one side surface of the cap away from the baffle plate, an axis of the second through hole overlaps with an axis of the first through hole, a spring is connected to one side surface of the baffle plate away from the holder, and the other end of the spring is connected to the cap, When the spring is uncompressed, the cap covers the syringe needle, When the cap is moved toward the baffle plate to compress the spring, the syringe needle is exposed from the second through-hole.

[0011] Preferably, both opposing outer walls of the storage chamber are provided with slide grooves, a slide bar that is aligned with the slide groove is provided on each of the opposing inner side walls of the slide cover; The sliding bar is slidably connected to the sliding groove.

[0012] Preferably, an L-shaped guide groove is provided on the outer bottom surface of the storage chamber, and the L-shaped guide groove includes a vertical groove and a horizontal groove that are connected to each other, the vertical groove and the sliding groove are parallel to each other, the horizontal groove and the sliding groove are perpendicular to each other, and the horizontal groove is connected to one end of the vertical groove that is remote from the baffle plate, a hollow sliding cavity is formed on the outer surface of the sliding cover, a locking member is slidably connected within the sliding cavity, a position restricting bar is connected to the bottom of the locking member and extends along the length (longitudinal direction) of the sliding cover, and the position restricting bar is located inside the sliding cover; When the piston rod of the syringe is not pressed by the push rod and the locking member is on the first side of the sliding cavity, the tip end of the position limiting bar abuts against the groove wall of the lateral groove to prevent the sliding cover from moving linearly relative to the receiving chamber; When the piston rod of the syringe is not pressed by the push rod and the locking member moves in a translational manner toward the second side of the sliding cavity, the tip of the position restriction bar is in the vertical groove, and the sliding cover moves linearly relative to the receiving chamber.

[0013] Preferably, both opposing outer walls of the slide cover are provided with pressing portions recessed into the slide cover, The number of the pressing portions is plural, and the pressing portions are arranged along the length direction of the slide cover.

[0014] Preferably, the surface of the pressing part is covered with an anti-slip pad, The anti-slip pad is provided with a plurality of anti-slip protrusions.

[0015] Preferably, a chamber cover is further hingedly connected to the outer wall of the storage chamber.

[0016] Preferably, an observation window is provided in the chamber cover at a location corresponding to the holder.

[0017] As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

[0018] An embodiment of the present invention provides a syringe-assist device, the syringe-assist device including a container, a slide cover, and a holder for fixing a syringe. A baffle plate is provided at the front end of the container, and a first through-hole is provided in the baffle plate for receiving the needle of the syringe. The container is provided with a plurality of scale engagement grooves representing different scales along its length, and the scale engagement grooves are perpendicular to the axial direction of the first through-hole. A locking plate is provided at the bottom surface of the front end of the holder, and is aligned with the scale engagement grooves. The locking plate is engaged in the scale engagement grooves. The slide cover is slidably mounted on an outer wall of the container, and the interior of the slide cover communicates with the interior of the container. A push rod is fixedly connected to the interior of the slide cover and is adapted to abut against a piston rod of the syringe. The slide cover is driven to move linearly back and forth relative to the container, and when the slide cover moves toward the baffle plate, the push rod presses the piston rod to eject the medicine in the syringe from the needle. In this embodiment, the syringe is fixed to the holder, and the engagement plate of the holder engages with the scale engagement groove. Therefore, if the syringe is long and the length exposed through the first through hole is longer than the standard length, the user engages the engagement plate of the pallet into the rear scale engagement groove so that the length of the needle exposed through the first through hole matches the standard length. Conversely, if the syringe is short and the length exposed through the first through hole is shorter than the standard length, the user engages the pallet into the front scale engagement groove so that the length of the needle exposed through the first through hole matches the standard length. This syringe assist device has a design whereby, regardless of the type of syringe, the user can always adjust the position of the holder so that the length of the syringe needle exposed through the first through hole matches the standard length. The user simply inserts the needle exposed through the first through hole directly into the target position, eliminating the need to know how deep the needle should be inserted into the skin and avoiding the problem of insufficient drug injection. [Brief explanation of the drawings]

[0019] In order to clearly explain the technical solutions of the embodiments of the present invention or the prior art, the following briefly introduces the drawings necessary for explaining the embodiments or the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without performing any inventive activities.

[0020] [Figure 1] 1 is a schematic diagram of the configuration of a syringe-assist device provided by the present invention. [Figure 2] 1 is a schematic diagram showing the internal structure of a syringe-assist device provided by the present invention; [Figure 3] 1 is a schematic diagram of the holder configuration of the syringe assisting device provided by the present invention; FIG. [Figure 4] 1 is an enlarged view of the mating relationship between the holder and the scale engagement groove of the syringe-assist device provided by the present invention; [Figure 5] 1 is an exploded view of the baffle plate, spring, and cap of the syringe assist device provided by the present invention. FIG. [Figure 6] 1 is a schematic diagram showing the structure of the sliding groove of the syringe assisting device provided by the present invention; FIG. [Figure 7] 1 is a schematic diagram showing the internal structure of the slide cover of the syringe-assist device provided by the present invention; [Figure 8] 10 is a view showing the fitting relationship between the slide cover and the locking member of the syringe-assist device provided by the present invention; FIG. [Figure 9] 1 is a schematic diagram showing the fitting relationship between the position regulating bar and the L-shaped guide groove of the syringe assisting device provided by the present invention; FIG. [Figure 10] 1 is a schematic diagram of a syringe configuration related to the syringe-assist device provided by the present invention; [Figure 11] 1 is an enlarged view of the fitting relationship between the slide cover and the receiving chamber in the syringe-assist device provided by the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0021] The embodiments of the present invention disclose a syringe assist device to solve the technical problem that the conventional syringe assist device does not allow adjustment of the length of the needle exposed from the assist device.

[0022] In order to help those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in more detail below with reference to the drawings and specific embodiments. Obviously, the described embodiments are not all of the embodiments, but only some of the embodiments of the present invention. Based on the embodiments of the present invention, those skilled in the art will not engage in any inventive activities, and all other embodiments obtained will fall within the scope of protection of the present invention.

[0023] Referring to FIGS. 1 to 10, the syringe assist device provided in this embodiment is: The syringe includes a storage chamber (1), a slide cover (3), and a holder (6) for fixing a syringe (4), A baffle plate 102 is provided at the tip of the storage chamber 1, and a first through hole 1021 is provided in the baffle plate 102 for the needle 403 of the syringe 4 to pass through. A plurality of scale engagement grooves 103 representing different scales are provided in the storage chamber 1 along its length, and the plurality of scale engagement grooves 103 are arranged at predetermined intervals and are perpendicular to the axial direction of the first through hole 1021. An engagement plate 602 that aligns with the scale engagement groove 103 is provided on the bottom surface of the tip of the holder 6, and the engagement plate 602 is engaged in the scale engagement groove 103. The sliding cover 3 is slidably mounted on the outer wall of the receiving chamber 1, and the interior of the sliding cover 3 is connected to the interior of the receiving chamber 1. A push rod 302 is fixedly connected to the interior of the sliding cover 3 and is abutted against a piston rod 401 of the syringe 4. Specifically, the push rod 302 is located at the rear of the syringe 4 and is on the axis of the syringe 4. The push rod 302 abuts against a plunger 404 at the end of the piston rod 401. When the sliding cover 3 is driven, it performs a linear reciprocating motion relative to the receiving chamber 1, When the slide cover 3 moves toward the baffle plate 102 , the push rod 302 pushes the piston rod 401 so as to eject the medicine from the syringe 4 through the needle 403 .

[0024] The predetermined intervals between the plurality of scale engagement grooves 103 are determined by the medical injection standard and the type of syringe 4, and are not limited in this embodiment.

[0025] In this embodiment, the syringe 4 is fixed to the holder 6, and the engagement plate 602 of the holder 6 is engaged with the scale engagement groove 103. Therefore, if the length of the syringe 4 is long and the length exposed from the first through-hole 1021 is longer than the standard length, the user engages the engagement plate 602 of the pallet into the rear scale engagement groove 103 so that the length of the needle 403 exposed from the first through-hole 1021 matches the standard length. On the other hand, if the length of the syringe 4 is short and the length exposed from the first through-hole 1021 is shorter than the standard length, the user engages the engagement plate 602 of the pallet into the rear scale engagement groove 103 so that the length of the needle 403 exposed from the first through-hole 1021 matches the standard length. The user engages the palette into the front scale engagement groove 103 so that the length exposed from the through-hole 1021 matches the standard length. With this design, regardless of the type of syringe 4, the user can adjust the position of the holder 6 so that the length of the needle 403 of the syringe 4 exposed from the first through-hole 1021 always matches the standard length. The user can then directly insert the needle exposed from the first through-hole 1021 into the target position, eliminating the need to know the depth to which the needle 403 should be inserted into the skin and avoiding the problem of insufficient drug injection.

[0026] Furthermore, the rear end of the holder 6 is provided with an arc-shaped engagement groove 601 for engaging with the outer wall of the syringe 4.

[0027] Furthermore, since the outer wall of the syringe 4 has a cylindrical configuration, by arranging the arc-shaped engagement groove 601 in the holder 6, the syringe 4 and the holder 6 can be detachably connected, making it more convenient for the user to remove or attach the syringe 4.

[0028] Furthermore, locking hooks 101 are provided on both inner walls inside the storage chamber 1, and the two locking hooks 101 are engaged with opposite sides of the holder 6, respectively.

[0029] Furthermore, this design strengthens the fixation of holder 6 and prevents displacement of holder 6 when the syringe assist device is operated. In addition, since locking hook 101 in this embodiment is made of elastic plastic, locking hook 101 can be disengaged from holder 6 by rotating by a certain angle outside of receiving chamber 1, which makes it easier for the user to remove holder 6.

[0030] The device further includes a cap 5, a second through hole 501 is formed in one side of the cap 5 away from the baffle plate 102, and the axis of the second through hole 501 overlaps with the axis of the first through hole 1021, a spring 7 is connected to one side of the baffle plate 102 away from the holder 6, and the other end of the spring 7 is connected to the cap 5, When the spring 7 is not compressed, the cap 5 covers the needle 403 of the syringe 4, When the cap 5 moves toward the baffle plate 102 to compress the spring 7 , the needle 403 of the syringe 4 is exposed from the second through-hole 501 .

[0031] Furthermore, some users find it difficult to overcome the visual fear of sharp needles 403 and the psychological fear of self-injection. According to the above design, needle 403 is covered by cap 5, so that when the syringe-assist device is not being used to inject, the user cannot see needle 403. When the user starts an injection, cap 5 moves toward baffle plate 102 due to the pressure of the skin, compressing spring 7. In this case, needle 403 is exposed from second through-hole 501 and inserted into the skin layer. As can be seen from the above description, needle 403 is not visible to the user, which makes it more convenient for users who have a visual fear of needles 403.

[0032] Furthermore, sliding grooves 104 are provided on both of the opposing outer walls of the storage chamber 1, The sliding cover 3 has sliding bars 303 on both of its opposing inner side walls, each of which is fitted into the sliding groove 104. The sliding bar 303 is slidably connected to the sliding groove 104 .

[0033] In addition, the sliding grooves 104 are specifically provided on both the left and right outer walls of the storage chamber 1, and the sliding bars 303 are specifically provided on both the left and right inner walls of the sliding cover 3. When the sliding cover 3 is driven to perform a linear reciprocating motion relative to the storage chamber 1, the sliding bars 303 slide along the sliding grooves 104. This design makes the sliding cover 3 slide more smoothly and stably relative to the storage chamber 1.

[0034] Furthermore, an L-shaped guide groove is provided on the outer bottom surface (outer bottom surface) of the storage chamber 1, and the L-shaped guide groove includes a vertical groove 105 and a horizontal groove 106 that communicate with each other, the vertical groove 105 and the sliding groove 104 are parallel to each other, the horizontal groove 106 and the sliding groove 104 are perpendicular to each other, and the horizontal groove 106 is connected to one end of the vertical groove 105 that is remote from the baffle plate 102, A hollow sliding cavity 305 is formed on the outer surface of the sliding cover 3, a locking member 304 is slidably connected within the sliding cavity 305, a position restricting bar 3041 is connected to the bottom of the locking member 304 and extends along the length of the sliding cover 3, and the position restricting bar 3041 is located inside the sliding cover 3. As shown in FIG. 9 , when the piston rod 401 of the syringe 4 is not pressed by the push rod 302 and the locking member 304 is located on the first side of the sliding cavity 305, the tip of the position restricting bar 3041 abuts against the groove wall of the lateral groove 106, so as to prevent the sliding cover 3 from linearly moving relative to the receiving chamber 1; When the piston rod 401 of the syringe 4 is not pushed by the push rod 302 and the locking member 304 moves in a translational manner toward the second side of the sliding cavity 305, the tip of the position control bar 3041 is in the vertical groove 105, and the sliding cover 3 moves linearly relative to the storage chamber 1.

[0035] Furthermore, this design can prevent the user from accidentally touching the sliding cover 3 and causing the medicine in the syringe 4 to be ejected from the needle 403. Specifically, when the user is not injecting, if the locking member 304 is moved to the first side (leftmost side) of the sliding cavity 305, the tip of the position restriction bar 3041 will abut against the groove wall of the lateral groove 106, preventing the sliding cover 3 from moving linearly relative to the receiving chamber 1. On the other hand, when the user is about to inject, if the locking member is moved to the second side (leftmost side) of the sliding cavity 305, the tip of the position restriction bar 3041 will abut against the groove wall of the lateral groove 106, preventing the sliding cover 3 from moving linearly relative to the receiving chamber 1. When the sliding cover 3 is moved to the left (right side), the tip of the position restriction bar 3041 moves laterally and separates from the groove wall of the lateral groove 106, and the tip of the position restriction bar 3041 finally stops within the vertical groove 105. At this time, the sliding cover 3 moves linearly relative to the storage chamber 1, and since the position restriction bar 3041 is arranged along the length of the sliding cover 3, the position restriction bar 3041 and the vertical groove 105 are parallel to each other, and when the sliding cover 3 moves linearly relative to the storage chamber 1, the position restriction bar 3041 moves linearly along the vertical groove 105.

[0036] Furthermore, both of the opposing outer walls of the slide cover 3 are provided with pressing portions 301 recessed into the slide cover 3, The number of the pressing portions 301 is plural, and the pressing portions 301 are arranged along the length direction of the slide cover 3, The surface of the pressing part 301 is covered with an anti-slip pad, The anti-slip pad is provided with a plurality of anti-slip protrusions.

[0037] The above design allows the user to place his / her hand on pressing part 301 when using the syringe assist device, making it more comfortable for the user to use; and the anti-slip pad design increases the friction between the user's hand and pressing part 301, preventing the hand from slipping.

[0038] Furthermore, a chamber cover 2 is hingedly connected to the outer wall of the storage chamber 1.

[0039] Furthermore, an observation window 201 is opened in the chamber cover 2 at a location corresponding to the holder 6 .

[0040] Here, with the above design, even when the chamber cover 2 covers the storage chamber 1, the user can observe the state of use of the medicine in the syringe 4 through the observation window 201.

[0041] Furthermore, referring to Figure 11, this embodiment further includes a position control structure for preventing the sliding cover 3 from detaching from the storage chamber 1, and this position control structure includes a stopper block 306 provided on the inner wall of the sliding cover 3 and a position control block 107 provided on the outer wall of the storage chamber 1, and when the sliding cover 3 moves to the rearmost position of the storage chamber 1, the stopper block 306 and the position control block 107 abut against each other, thereby preventing the sliding cover 3 from continuing to move rearward and preventing the sliding cover 3 from detaching from the storage chamber 1.

[0042] The specific principle of use of the syringe assist device of this embodiment is as follows.

[0043] Before using the syringe assisting device, the user first opens the chamber cover 2, selects the appropriate scale engagement groove 103 according to the type and injection standard of the syringe 4, engages the engagement plate 602 of the holder 6 with the selected scale engagement groove 103, and then engages and fixes the syringe 4 in the arc-shaped engagement groove 601 of the holder 6, passes the needle 403 of the syringe 4 through the first through-hole 1021, abuts the piston rod 401 against the push rod 302, and then covers the chamber 1 with the chamber cover 2. In this case, the user is ready to start injection. Then, the user removes the plastic protective cap 402 of the needle 403, aligns the tip of the storage chamber 1 with the injection position, and then the cap 5 is pressed against the skin surface and moved toward the pressing plate, so that the needle 403 penetrates the second through-hole 501 and is inserted into the body. Finally, the user moves the locking member 304 to the second side (the rightmost side) and presses the sliding cover 3, so that the sliding cover 3 moves along the storage chamber 1 toward the baffle plate 102, and the pushing rod 302 pushes the piston rod 401, causing the medicine to be injected from the needle 403 into the body.

[0044] In addition, in this embodiment, a protrusion is further provided on the outer wall of the storage chamber 1, and when the slide cover 3 moves to the end point (at the end of the injection), the slide cover 3 and the protrusion make a clear collision sound, alerting the user that the injection is complete.

[0045] The above is a detailed introduction to the syringe-assist device provided by the present invention. Those skilled in the art can make any modifications to the specific embodiments and scope of application based on the concepts of the embodiments of the present invention. As stated above, the contents of this specification should not be construed as limitations on the present invention. [Industrial Applicability]

[0046] The present invention provides a syringe-assisted device for self-injection that is useful in the medical field. [Explanation of symbols]

[0047] 1. Containment Room 101 Locking hook 102 Baffle plate 1021 First through hole 103 Scale engagement groove 104 ···Sliding groove 105...Vertical groove 106 Lateral groove 107 Position control block 2...chamber lid 201 Observation window 3 Slide cover 301 Pressing part 302 Push rod 303 Sliding bar 304 Locking member 3041 Position control bar 305 Sliding cavity 306 Stopper block 4...Syringe 401 Piston rod 402 Protective cap 403...needle 404 Pusher 5 Cap 501 Second through hole 6 Holder 601 Arc-shaped engagement groove 602 Engagement plate 7 Spring

Claims

1. A syringe assist device, comprising: a storage chamber, a slide cover, and a holder for fixing a syringe; a baffle plate is provided at the tip of the storage chamber, the baffle plate is provided with a first through hole for a syringe needle to pass through, the storage chamber is provided with a plurality of scale engagement grooves representing different scales along its length, the plurality of scale engagement grooves are arranged at predetermined intervals, the scale engagement grooves are perpendicular to the axial direction of the first through hole, an engagement plate that aligns with the scale engagement grooves is provided on the bottom surface of the tip of the holder, and the engagement plate is engaged within the scale engagement groove; the slide cover is slidably mounted on an outer wall of the storage chamber, the interior of the slide cover is in communication with the interior of the storage chamber, a push rod to be brought into contact with a piston rod of a syringe is fixedly connected to the interior of the slide cover, and the slide cover is driven to move linearly back and forth relative to the storage chamber, When the slide cover moves toward the baffle plate, the push rod pushes the piston rod so as to eject the medicine from the syringe needle. Syringe auxiliary device.

2. The rear end of the holder is provided with an arc-shaped engagement groove for engaging with the outer wall of the syringe.

10. The syringe assist device of claim 1.

3. The two inner walls of the receiving chamber are provided with hooks, and the two hooks are engaged with opposite sides of the holder, respectively.

10. The syringe assist device of claim 1.

4. The air conditioner further includes a cap, wherein a second through hole is formed in one side of the cap away from the baffle plate, and an axis of the second through hole overlaps with an axis of the first through hole. A spring is connected to one side of the baffle plate away from the holder, and the other end of the spring is connected to the cap. When the spring is uncompressed, the cap covers the syringe needle, The syringe assist device according to claim 1, wherein when the cap is moved toward the baffle plate to compress the spring, the needle of the syringe is exposed from the second through-hole.

5. A sliding groove is provided on each of the opposing outer walls of the storage chamber, a slide bar that is aligned with the slide groove is provided on each of the opposing inner side walls of the slide cover; The sliding bar is slidably connected to the sliding groove.

10. The syringe assist device of claim 1.

6. an L-shaped guide groove is provided on the outer bottom surface of the accommodation chamber, the L-shaped guide groove including a vertical groove and a horizontal groove that communicate with each other, the vertical groove and the sliding groove are parallel to each other, the horizontal groove and the sliding groove are perpendicular to each other, and the horizontal groove is connected to one end of the vertical groove that is remote from the baffle plate; a hollow sliding cavity is formed on the outer surface of the sliding cover, a locking member is slidably connected within the sliding cavity, a position restricting bar is connected to the bottom of the locking member and extends along the length of the sliding cover, and the position restricting bar is located inside the sliding cover; When the piston rod of the syringe is not pressed by the push rod and the locking member is on the first side of the sliding cavity, the tip end of the position limiting bar abuts against the groove wall of the lateral groove to prevent the sliding cover from moving linearly relative to the receiving chamber; When the piston rod of the syringe is not pushed by the push rod and the locking member moves translationally to the second side of the sliding cavity, the tip of the position limiting bar is in the vertical groove, and the sliding cover moves linearly relative to the receiving chamber.

6. The syringe assist device of claim 5.

7. Each of the opposing outer walls of the slide cover is provided with a pressing portion recessed into the slide cover, The number of the pressing parts is plural, and the pressing parts are arranged along the length direction of the slide cover.

10. The syringe assist device of claim 1.

8. The surface of the pressing part is covered with an anti-slip pad, The syringe-assist device according to claim 7, wherein the anti-slip pad is provided with a plurality of anti-slip protrusions.

9. A chamber cover is further hingedly connected to the outer wall of the storage chamber.

10. The syringe assist device of claim 1.

10. An observation window is opened at a position of the chamber cover corresponding to the holder.

10. The syringe assist device of claim 9.

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