A syringe auxiliary device

Abstract

The present invention discloses a syringe auxiliary device, which is used to solve the technical problem that the existing syringe auxiliary device cannot adjust the length of the needle exposed from the auxiliary device. The present invention includes a accommodating cabin, a sliding sleeve and a bracket for fixing the syringe; a baffle is provided at the front end of the accommodating cabin, a first through hole is provided on the baffle for the syringe needle to pass through, a plurality of gear slots representing different gears are provided in the accommodating cabin along its length direction, the plurality of gear slots are arranged according to preset intervals, the gear slots are perpendicular to the axial direction of the first through hole, a card plate matching the gear slot is provided on the bottom surface of the front end of the bracket, and the card plate is engaged in the gear slot; the sliding sleeve is slidably mounted on the outer wall of the accommodating cabin, and the interior of the sliding sleeve is connected to the interior of the accommodating cabin, a push rod for abutting against the piston rod of the syringe is fixedly connected to the interior of the sliding sleeve, and the sliding sleeve can be driven to make linear reciprocating motion relative to the accommodating cabin.

Description

Technical Field

[0001] The invention relates to the technical field of syringe auxiliary device design, in particular to a syringe auxiliary device. Background Art

[0002] Traditional syringes usually consist of a syringe with a small hole at the front end and a matching piston rod. The tail of the syringe is usually provided with a flange for the user to grasp. Since the syringe is generally small in size, the flange at the tail of the syringe is often difficult to grasp by hand during actual operation. Some patients with chronic diseases need to receive frequent drug injections. Due to the high frequency of injections, chronic patients usually inject drugs by themselves. However, due to the structural problems of traditional syringes themselves, it is difficult for non-professional medical staff to operate them in practice. Therefore, various syringe auxiliary devices are now available on the market to reduce the difficulty of injection for non-professionals.

[0003] Existing syringe auxiliary devices generally include a cabin for accommodating the syringe and a sliding member for pushing the syringe piston rod. After the syringe is placed in the cabin, the needle of the syringe will be exposed from the auxiliary device, and then the user can inject the medicine into the body. Due to the various types of existing syringes, the length of the needle exposed from the auxiliary device after different types of syringes are placed in the cabin will also be different. The exposed length of the needle of some types of syringes may be 1 cm, 3 cm, etc. According to medical standards, there are certain requirements for the depth of needle insertion into the skin. For example, the optimal depth of needle insertion into the skin is 2 cm. When using existing auxiliary devices to inject the body, ordinary users cannot grasp the depth of needle insertion into the skin, resulting in the needle being inserted too deep or too shallow into the body.

[0004] Therefore, in order to solve the above technical problems, finding a syringe auxiliary device has become an important topic studied by those skilled in the art. Summary of the invention

[0005] The embodiment of the present invention discloses a syringe auxiliary device, which is used to solve the technical problem that the existing syringe auxiliary device cannot adjust the length of the needle exposed from the auxiliary device.

[0006] An embodiment of the present invention provides a syringe auxiliary device, comprising a accommodating chamber, a sliding sleeve, and a bracket for fixing the syringe;

[0007] A baffle is provided at the front end of the accommodating chamber, and a first through hole is provided on the baffle for the needle of the syringe to pass through. A plurality of gear slots representing different gears are provided in the accommodating chamber along its length direction, and the gear slots are perpendicular to the axial direction of the first through hole. A card plate matching the gear slot is provided on the bottom surface of the front end of the bracket, and the card plate is engaged in the gear slot;

[0008] The sliding sleeve is slidably mounted on the outer wall of the accommodating chamber, and the interior of the sliding sleeve is connected to the interior of the accommodating chamber. A push rod for contacting with the piston rod of the syringe is fixedly connected to the interior of the sliding sleeve, and the sliding sleeve can be driven to perform linear reciprocating motion relative to the accommodating chamber;

[0009] When the sliding sleeve moves toward the baffle, the push rod pushes the piston rod to eject the medicine in the syringe from the needle.

[0010] Optionally, the rear end of the bracket is provided with an arc-shaped groove for engaging with the outer side wall of the syringe.

[0011] Optionally, hooks are provided on both inner side walls of the accommodating compartment, and the two hooks are respectively engaged with opposite sides of the bracket.

[0012] Optionally, a covering cap is further included, wherein a second through hole is formed on a side of the covering cap away from the baffle, and an axis of the second through hole coincides with an axis of the first through hole; a spring is connected to a side of the baffle away from the bracket, and the other end of the spring is connected to the covering cap;

[0013] When the spring is not compressed, the covering cap covers the needle of the syringe;

[0014] When the covering cap moves toward the baffle to compress the spring, the needle of the syringe is exposed from the second through hole.

[0015] Optionally, two opposite outer side walls of the accommodating compartment are provided with slide grooves;

[0016] Sliding strips matching the sliding groove are arranged on two opposite inner side walls of the sliding sleeve;

[0017] The sliding bar is slidably connected to the sliding groove.

[0018] Optionally, an L-shaped guide groove is provided on the outer bottom surface of the accommodating compartment, the L-shaped guide groove comprises a vertical groove and a transverse groove which are connected to each other, the vertical groove is parallel to the slide groove, the transverse groove is perpendicular to the slide groove, and the transverse groove is connected to an end of the vertical groove away from the baffle;

[0019] A hollow sliding cavity is formed on the outer side of the sliding sleeve, a locking key is slidably connected in the sliding cavity, a limiting strip extending along the length direction of the sliding sleeve is connected to the bottom of the locking key, and the limiting strip is located inside the sliding sleeve;

[0020] When the piston rod of the syringe is not pushed by the push rod and the locking key is located at the first side of the sliding cavity, the front end of the limit strip abuts against the groove wall of the transverse groove to prevent the sliding sleeve from moving linearly relative to the accommodating chamber;

[0021] When the piston rod of the syringe is not pushed by the push rod and the locking key is translated to the second side of the sliding cavity, the front end of the limit strip is in the vertical groove, and the sliding sleeve can move linearly relative to the accommodating chamber.

[0022] Optionally, two opposite outer side walls of the sliding sleeve are provided with pressing portions recessed toward the interior of the sliding sleeve;

[0023] There are multiple pressing parts, and the multiple pressing parts are arranged along the length direction of the sliding sleeve.

[0024] Optionally, the surface of the pressing portion is covered with an anti-slip rubber pad;

[0025] The anti-skid rubber pad is provided with a plurality of anti-skid protrusions.

[0026] Optionally, the outer side wall of the accommodating cabin is also hinged with a cabin cover.

[0027] Optionally, an observation window is provided at a position corresponding to the hatch cover and the bracket.

[0028] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0029] An embodiment of the present invention provides a syringe auxiliary device, comprising a accommodating cabin, a sliding sleeve and a bracket for fixing the syringe; a baffle is provided at the front end of the accommodating cabin, a first through hole is provided on the baffle for the needle of the syringe to pass through, a plurality of gear slots representing different gears are provided in the accommodating cabin along its length direction, the gear slots are perpendicular to the axial direction of the first through hole, a clamping plate matching the gear slots is provided on the bottom surface of the front end of the bracket, and the clamping plate is engaged in the gear slots; the sliding sleeve is slidably mounted on the outer side wall of the accommodating cabin, and the interior of the sliding sleeve is connected to the interior of the accommodating cabin, a push rod for abutting against the piston rod of the syringe is fixedly connected to the interior of the sliding sleeve, and the sliding sleeve can be driven to perform linear reciprocating motion relative to the accommodating cabin; when the sliding sleeve moves in the direction of the baffle, the push rod pushes the piston rod to eject the medicine of the syringe from the needle. In the present embodiment, the syringe is fixed on the bracket. Since the clamping plate of the bracket is inserted into the gear slot, when the length of the syringe is longer and the length exposed in the first through hole is greater than the standard length, the user can clamp the clamping plate of the bracket into the gear slot at the rear to make the length of the needle exposed in the first through hole meet the standard length. When the length of the syringe is shorter and the length exposed in the first through hole is less than the standard length, the user can clamp the bracket into the front gear slot to make the length of the needle exposed in the first through hole meet the standard length. Through the above design, no matter what the type of syringe is, the user can adjust the position of the bracket so that the length of the syringe needle exposed in the first through hole always meets the standard length, so that the user can directly insert the needle exposed in the first through hole into the target position without the user having to control the depth of the needle inserted into the skin, thereby avoiding the problem of inadequate drug injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0031] Figure 1 A schematic diagram of the structure of a syringe auxiliary device provided by the present invention;

[0032] Figure 2 A schematic diagram of the internal structure of a syringe auxiliary device provided by the present invention;

[0033] Figure 3 A schematic diagram of a bracket structure of a syringe auxiliary device provided by the present invention;

[0034] Figure 4An enlarged view of the matching relationship between a bracket and a gear slot of a syringe auxiliary device provided by the present invention;

[0035] Figure 5 An exploded view of a baffle, a spring and a cover cap of a syringe auxiliary device provided by the present invention;

[0036] Figure 6 A schematic diagram of a slideway structure of a syringe auxiliary device provided by the present invention;

[0037] Figure 7 A schematic diagram of the internal structure of a sliding sleeve of a syringe auxiliary device provided by the present invention;

[0038] Figure 8 A diagram showing the matching relationship between a sliding sleeve and a locking key of a syringe auxiliary device provided by the present invention;

[0039] Fig. 9 A schematic diagram of the matching relationship between a limit strip and an L-shaped guide groove of a syringe auxiliary device provided by the present invention;

[0040] Fig.10 A schematic diagram of the structure of a syringe involved in a syringe auxiliary device provided by the present invention;

[0041] Fig.11 An enlarged view of the matching relationship between the sliding sleeve and the accommodating chamber in a syringe auxiliary device provided by the present invention;

[0042] Illustrations: accommodating cabin 1; hook 101; baffle 102; first through hole 1021; gear slot 103; slide slot 104; vertical slot 105; transverse slot 106; limit block 107; cabin cover 2; observation window 201; sleeve 3; pressing portion 301; push rod 302; slide bar 303; locking key 304; limit bar 3041; sliding cavity 305; block 306; syringe 4; piston rod 401; needle cap 402; needle 403; push cake 404; covering cap 5; second through hole 501; bracket 6; arc slot 601; clamping plate 602; spring 7. DETAILED DESCRIPTION

[0043] The embodiment of the present invention discloses a syringe auxiliary device, which is used to solve the technical problem that the existing syringe auxiliary device cannot adjust the length of the needle exposed from the auxiliary device.

[0044] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0045] See also Figures 1 to 10 , a syringe auxiliary device provided in this embodiment includes:

[0046] A accommodating chamber 1, a sliding sleeve 3 and a bracket 6 for fixing a syringe 4;

[0047] The front end of the accommodating chamber 1 is provided with a baffle 102, and the baffle 102 is provided with a first through hole 1021 for the needle 403 of the syringe 4 to pass through. The accommodating chamber 1 is provided with a plurality of gear slots 103 representing different gears along its length direction, and the plurality of gear slots 103 are arranged at preset intervals, and the gear slots 103 are perpendicular to the axial direction of the first through hole 1021. The bottom surface of the front end of the bracket 6 is provided with a card plate 602 matching the gear slot 103, and the card plate 602 is engaged in the gear slot 103;

[0048] The sliding sleeve 3 is slidably mounted on the outer wall of the accommodating chamber 1, and the interior of the sliding sleeve 3 is connected to the interior of the accommodating chamber 1. A push rod 302 for abutting against the piston rod 401 of the syringe 4 is fixedly connected to the interior of the sliding sleeve 3. Specifically, the push rod 302 is located behind the syringe 4 and on the axis of the syringe 4. The push rod 302 abuts against a push cake 404 at the end of the piston rod 401. The sliding sleeve 3 can be driven to perform linear reciprocating motion relative to the accommodating chamber 1.

[0049] When the sliding sleeve 3 moves toward the baffle 102 , the push rod 302 pushes the piston rod 401 to eject the medicine in the syringe 4 from the needle 403 .

[0050] It should be noted that the preset intervals between the multiple gear slots 103 need to be determined by the medical injection standard and the type of the syringe 4 , and this embodiment does not limit the above preset intervals.

[0051] In this embodiment, the syringe 4 is fixed on the bracket 6. Since the clamping plate 602 of the bracket 6 is clamped in the gear clamping slot 103, when the length of the syringe 4 is longer and the length exposed in the first through hole 1021 is greater than the standard length, the user can clamp the clamping plate 602 of the bracket into the gear clamping slot 103 at the rear to make the length of the needle 403 exposed in the first through hole 1021 conform to the standard length. When the length of the syringe 4 is shorter and the length exposed in the first through hole 1021 is less than the standard length, the user can clamp the bracket into the front gear clamping slot 103. The gear slot 103 on the surface is arranged in the gear slot 103 so that the length of the needle 403 exposed from the first through hole 1021 meets the standard length. Through the above design, no matter what the type of syringe 4 is, the user can adjust the position of the bracket 6 to make the length of the needle 403 of the syringe 4 exposed from the first through hole 1021 always meet the standard length, so that the user can directly insert the needle exposed from the first through hole 1021 into the target position without the user having to control the depth of the needle 403 inserted into the skin, thereby avoiding the problem of inadequate drug injection.

[0052] Furthermore, the rear end of the bracket 6 is provided with an arc-shaped slot 601 for engaging with the outer side wall of the syringe 4 .

[0053] It should be noted that, since the outer wall of the syringe 4 is a cylindrical structure, the syringe 4 can be detachably connected to the bracket 6 by providing an arc-shaped slot 601 on the bracket 6, which makes it more convenient for the user to remove or install the syringe 4.

[0054] Furthermore, hooks 101 are provided on both inner side walls of the accommodating compartment 1 , and the two hooks 101 are respectively engaged with opposite sides of the bracket 6 .

[0055] It should be noted that, through the above-mentioned design, the bracket 6 can be fixed more firmly to prevent the bracket 6 from being displaced when the syringe auxiliary device is working. In addition, the hook 101 in this embodiment is made of elastic plastic, so the hook 101 can be rotated to a certain angle toward the outside of the accommodating compartment 1 to be separated from the bracket 6, making it more convenient for the user to remove the bracket 6.

[0056] Furthermore, it also includes a covering cap 5, a side of the covering cap 5 away from the baffle 102 is provided with a second through hole 501, the axis of the second through hole 501 coincides with the axis of the first through hole 1021, a side of the baffle 102 away from the bracket 6 is connected to a spring 7, and the other end of the spring 7 is connected to the covering cap 5;

[0057] When the spring 7 is not compressed, the covering cap 5 covers the needle 403 of the syringe 4;

[0058] When the covering cap 5 moves toward the baffle 102 to compress the spring 7 , the needle 403 of the syringe 4 is exposed from the second through hole 501 .

[0059] It should be noted that, since it is difficult for some users to overcome the visual fear of the sharp needle 403 and the psychological fear of giving themselves an injection, the above-mentioned design means that when the user does not use the syringe auxiliary device for injection, the user cannot see the needle 403 because the needle 403 is covered by the above-mentioned covering cap 5. When the user starts to inject, the covering cap 5 is moved toward the baffle 102 by the pressure of the skin to compress the spring 7. At this time, the needle 403 is exposed in the second through hole 501 and is inserted into the skin layer. It can be seen from the above-mentioned process that the user cannot see the needle 403, which is more convenient for some users who have a visual fear of the needle 403 to use.

[0060] Furthermore, two opposite outer side walls of the accommodating compartment 1 are provided with slide grooves 104;

[0061] The two opposite inner side walls of the sliding sleeve 3 are both provided with sliding bars 303 matching the sliding groove 104;

[0062] The sliding bar 303 is slidably connected to the sliding groove 104 .

[0063] It should be noted that the slide groove 104 is specifically arranged on the left and right outer walls of the accommodating cabin 1, and the sliding bar 303 is specifically arranged on the left and right inner walls of the sliding sleeve 3. When the sliding sleeve 3 is driven to make a linear reciprocating motion relative to the accommodating cabin 1, the sliding bar 303 slides along the slide groove 104. Through the above design, the sliding sleeve 3 can slide relative to the accommodating cabin 1 more smoothly and stably.

[0064] Furthermore, an L-shaped guide groove is provided on the outer bottom surface of the accommodating compartment 1, and the L-shaped guide groove includes a vertical groove 105 and a horizontal groove 106 that are connected to each other, the vertical groove 105 is parallel to the slide groove 104, the horizontal groove 106 is perpendicular to the slide groove 104, and the horizontal groove 106 is connected to one end of the vertical groove 105 away from the baffle 102;

[0065] A hollow sliding cavity 305 is formed on the outer side of the sliding sleeve 3, a locking key 304 is slidably connected in the sliding cavity 305, a limiting strip 3041 extending along the length direction of the sliding sleeve 3 is connected to the bottom of the locking key 304, and the limiting strip 3041 is located inside the sliding sleeve 3;

[0066] like Fig. 9As shown, when the piston rod 401 of the syringe 4 is not pushed by the push rod 302 and the locking key 304 is at the first side of the sliding cavity 305, the front end of the limiting strip 3041 abuts against the groove wall of the transverse groove 106 to prevent the sliding sleeve 3 from making a linear movement relative to the accommodating chamber 1;

[0067] When the piston rod 401 of the syringe 4 is not pushed by the push rod 302 and the locking key 304 is translated to the second side of the sliding cavity 305, the front end of the limit strip 3041 is in the vertical groove 105, and the sliding sleeve 3 can move linearly relative to the accommodating chamber 1.

[0068] It should be noted that, through the above-mentioned design, it is possible to prevent the user from accidentally touching the sliding sleeve 3, causing the drug in the syringe 4 to be ejected from the needle 403. Specifically, when the user does not inject, when the locking key 304 is pushed to the first side (the leftmost side) of the sliding cavity 305, the front end of the limiting strip 3041 conflicts with the groove wall of the transverse groove 106, resulting in the sliding sleeve 3 being unable to move linearly relative to the accommodating chamber 1. When the user needs to inject, the user needs to push the locking member to the left side of the sliding cavity 305. When on the second side (the rightmost side), the front end of the limit strip 3041 moves laterally and separates from the groove wall of the horizontal groove 106, and the front end of the limit strip 3041 finally stays in the vertical groove 105. At this time, the sleeve 3 can move linearly relative to the accommodating cabin 1. Since the limit strip 3041 is arranged along the length direction of the sleeve 3, the limit strip 3041 and the vertical groove 105 are parallel to each other. When the sleeve 3 moves linearly relative to the accommodating cabin 1, the limit strip 3041 moves linearly along the vertical groove 105.

[0069] Furthermore, two opposite outer side walls of the sliding sleeve 3 are provided with pressing portions 301 recessed toward the interior of the sliding sleeve 3;

[0070] There are multiple pressing parts 301, and the multiple pressing parts 301 are arranged along the length direction of the sliding sleeve 3;

[0071] The surface of the pressing portion 301 is covered with an anti-slip rubber pad;

[0072] The anti-skid rubber pad is provided with a plurality of anti-skid protrusions.

[0073] Through the above design, when the user uses the syringe auxiliary device, the user's hand can fit on the pressing part 301, making the user more comfortable when using it. In addition, the design of the anti-slip rubber pad can increase the friction between the user's hand and the pressing part 301 to prevent the user's hand from slipping.

[0074] Furthermore, a hatch cover 2 is hingedly connected to the outer side wall of the accommodating cabin 1 .

[0075] Furthermore, an observation window 201 is provided at a position corresponding to the hatch cover 2 and the bracket 6 .

[0076] It should be noted that, through the above-mentioned design, even if the hatch cover 2 is closed on the accommodating cabin 1 , the user can still observe the usage of the medicine in the syringe 4 through the observation window 201 .

[0077] For further information, see Fig.11 In this embodiment, a limiting structure is also included to prevent the sleeve 3 from being separated from the accommodating cabin 1. The limiting structure includes a stopper 306 arranged on the inner wall of the sleeve 3 and a limiter 107 arranged on the outer wall of the accommodating cabin 1. When the sleeve 3 moves to the rearmost of the accommodating cabin 1, the stopper 306 and the limiter 107 collide with each other to prevent the sleeve 3 from continuing to move backward, thereby preventing the sleeve 3 from being separated from the accommodating cabin 1.

[0078] The specific working principle of the syringe auxiliary device in this embodiment is as follows:

[0079] Before using the syringe auxiliary device, the hatch 2 is opened first. The user selects the appropriate gear slot 103 according to the type of syringe 4 and the injection standard, and inserts the card plate 602 of the bracket 6 into the selected gear slot 103. Then, the user inserts the syringe 4 into the arc-shaped slot 601 of the bracket 6 to fix it, and makes the needle 403 of the syringe 4 pass through the first through hole 1021, so that the piston rod 401 is in contact with the push rod 302, and then closes the hatch 2 on the accommodating chamber 1. At this time, the user is ready to start the injection. When starting During injection, the user needs to remove the plastic needle cap 402 on the needle 403. After the user aligns the front end of the accommodating chamber 1 with the injection position, the covering cap 5 is pressed against the skin surface. The covering cap 5 moves toward the pressure plate under pressure, and the needle 403 passes through the second through hole 501 and is inserted into the human body. Finally, the user moves the locking key 304 to the second side (the rightmost side) and presses the sleeve 3, so that the sleeve 3 moves along the accommodating chamber 1 toward the baffle 102, and the push rod 302 pushes the piston rod 401 to inject the drug from the needle 403 into the human body.

[0080] In addition, a convex point may be provided on the outer wall of the accommodating chamber 1 in this embodiment. When the sliding sleeve 3 moves to the end point (when the injection is completed), the sliding sleeve 3 and the convex point will produce a crisp collision sound to remind the user that the injection is completed.

[0081] The above is a detailed introduction to a syringe auxiliary device provided by the present invention. For a person skilled in the art, according to the concept of the embodiments of the present invention, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A syringe auxiliary device, characterized in that: It includes a accommodating chamber, a sliding sleeve, and a bracket for fixing the syringe; A baffle is provided at the front end of the accommodating chamber, and a first through hole is provided on the baffle for the needle of the syringe to pass through. A plurality of gear slots representing different gears are provided in the accommodating chamber along its length direction, and the plurality of gear slots are arranged at preset intervals, and the gear slots are perpendicular to the axial direction of the first through hole. A card plate matching the gear slot is provided on the bottom surface of the front end of the bracket, and the card plate is engaged in the gear slot; The sliding sleeve is slidably mounted on the outer wall of the accommodating chamber, and the interior of the sliding sleeve is connected to the interior of the accommodating chamber. A push rod for contacting with the piston rod of the syringe is fixedly connected to the interior of the sliding sleeve, and the sliding sleeve can be driven to perform linear reciprocating motion relative to the accommodating chamber; When the sliding sleeve moves toward the baffle, the push rod pushes the piston rod to eject the medicine in the syringe from the needle.

2. The syringe auxiliary device according to claim 1, characterized in that The rear end of the bracket is provided with an arc-shaped clamping groove for clamping the outer side wall of the syringe.

3. The syringe auxiliary device according to claim 1, characterized in that The two inner side walls of the accommodating compartment are both provided with hooks, and the two hooks are respectively engaged with the opposite sides of the bracket.

4. The syringe auxiliary device according to claim 1, characterized in that It also includes a covering cap, wherein a second through hole is formed on a side of the covering cap away from the baffle, and an axis of the second through hole coincides with an axis of the first through hole; a spring is connected to a side of the baffle away from the bracket, and the other end of the spring is connected to the covering cap; When the spring is not compressed, the covering cap covers the needle of the syringe; When the covering cap moves toward the baffle to compress the spring, the needle of the syringe is exposed from the second through hole.

5. The syringe auxiliary device according to claim 1, characterized in that The two opposite outer side walls of the accommodating compartment are both provided with slide grooves; Sliding strips matching the sliding groove are arranged on two opposite inner side walls of the sliding sleeve; The sliding bar is slidably connected to the sliding groove.

6. The syringe auxiliary device according to claim 5, characterized in that An L-shaped guide groove is provided on the outer bottom surface of the accommodating compartment, the L-shaped guide groove comprises a vertical groove and a transverse groove which are connected to each other, the vertical groove is parallel to the slide groove, the transverse groove is perpendicular to the slide groove, and the transverse groove is connected to an end of the vertical groove away from the baffle; A hollow sliding cavity is formed on the outer side of the sliding sleeve, a locking key is slidably connected in the sliding cavity, a limiting strip extending along the length direction of the sliding sleeve is connected to the bottom of the locking key, and the limiting strip is located inside the sliding sleeve; When the piston rod of the syringe is not pushed by the push rod and the locking key is located at the first side of the sliding cavity, the front end of the limit strip abuts against the groove wall of the transverse groove to prevent the sliding sleeve from moving linearly relative to the accommodating chamber; When the piston rod of the syringe is not pushed by the push rod and the locking key is translated to the second side of the sliding cavity, the front end of the limit strip is in the vertical groove, and the sliding sleeve can move linearly relative to the accommodating chamber.

7. The syringe auxiliary device according to claim 1, characterized in that The two opposite outer side walls of the sliding sleeve are both provided with pressing parts recessed into the interior of the sliding sleeve; There are multiple pressing parts, and the multiple pressing parts are arranged along the length direction of the sliding sleeve.

8. The syringe auxiliary device according to claim 7, characterized in that The surface of the pressing part is covered with an anti-slip rubber pad; The anti-skid rubber pad is provided with a plurality of anti-skid protrusions.

9. The syringe auxiliary device according to claim 1, characterized in that The outer side wall of the accommodating cabin is also hinged with a cabin cover.

10. The syringe auxiliary device according to claim 9, characterized in that An observation window is provided at the corresponding position of the hatch cover and the bracket.

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