JP2022034547A - Injector auxiliary device - Google Patents

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

The present invention relates to the technical field in which the syringe assisting device is designed, and particularly to the syringe assisting device.

Traditional syringes typically consist of a syringe with a small perforation at the tip and a matching piston rod, and the tail of the syringe is typically provided with a flange for the user to grip. Be done. Since the volume of the syringe is small, it is difficult to grasp the flange portion of the tail of the syringe by hand in some actual operations. Patients with chronic illness usually inject their own medication because patients with chronic illness often have to receive injections of the drug and the frequency of injections is high.
However, the actual operation is difficult for non-professional medical nurses due to the problem of the configuration of the conventional syringe itself. Therefore, in order to reduce the difficulty of injection by non-specialists, various syringe assisting devices are currently on the market.

Utility Model Registration No. 3143302 Japanese Unexamined Patent Publication No. 2017-189515 Japanese Patent Publication No. 2017-505218

Conventional syringe assist devices are generally configured to include a chamber for accommodating the syringe and a sliding member for pushing the piston rod of the syringe, and when the syringe is placed in the chamber, it assists the needle of the syringe. It is exposed from the device so that the user can inject the drug into the body. Since there are many types of conventional syringes (for example, Patent Documents 1 to 3 above), the length of the needle exposed from the auxiliary device after arranging different types of syringes in the room is also different, for example, of a certain type of syringe. The exposed length of the needle can be 1 cm, 3 cm, and so on. According to medical standards, there is a certain requirement for the depth of the needle to be inserted into the skin, for example, the optimum depth of the needle to be inserted into the skin is 2 cm, utilizing conventional assistive devices, the body. When injecting into the skin, the normal user cannot capture the depth of the needle inserted into the skin, so the needle may be too deep or too shallow to be inserted into the body.

Therefore, finding a syringe assisting device in order to solve the above technical problem becomes an important research subject for those skilled in the art.

The embodiments of the present invention disclose a syringe assisting device for solving the technical problem that the conventional syringe assisting device cannot adjust the length of the needle exposed to the assisting device.

Embodiments of the invention provide a syringe assist device, including a containment chamber, a slide cover, and a holder for fixing the syringe.
A baffle plate is provided at the tip of the containment chamber, the baffle plate is provided with a first through hole through which the needle of the syringe penetrates, and the inside of the containment chamber is provided with a length direction (longitudinal direction) thereof. A plurality of scale engaging grooves representing different scales are provided, the scale engaging grooves are perpendicular to the axial direction of the first through hole, and the scale is on the bottom surface of the tip of the holder. An engaging plate is provided that matches the engaging groove, and the engaging plate is engaged in the scale engaging groove.
The slide cover is slidably mounted on the outer wall of the storage chamber, the inside of the slide cover communicates with the inside of the storage chamber, and the inside of the slide cover is abutted against the piston rod of the syringe. A push rod for the movement is fixedly connected, and the slide cover is driven so as to reciprocate linearly with respect to the accommodation chamber.
The slide cover pushes the piston rod with the push rod so that the drug of the syringe is ejected from the needle when moving toward the baffle plate.

Preferably, the rear end of the holder is provided with an arc-shaped engaging groove for engaging the outer wall of the syringe.

Preferably, locking hooks are provided on both inner sidewalls inside the containment chamber, and the two locking hooks are respectively engaged on opposite sides of the holder.

Preferably, a second through hole is formed on one side surface of the cap, further including a cap, away from the baffle plate, and the axis of the second through hole overlaps with the axis of the first through hole, and the baffle is formed. A spring is connected to one side of the plate away from the holder, and the other end of the spring is connected to the cap.
When the spring is not compressed, the cap covers the needle of the syringe and
When the cap moves in the direction of the baffle plate so as to compress the spring, the needle of the syringe is exposed from the second through hole.

Preferably, sliding grooves are provided on both outer walls of the accommodation chamber facing each other.
Sliding bars that match the sliding grooves are provided on both inner side walls of the slide cover that face each other.
The sliding bar is slidably connected to the sliding groove.

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 lateral groove communicating with each other, and the vertical groove and the said. The sliding grooves are parallel to each other, the lateral groove and the sliding groove are perpendicular to each other, and the lateral groove is connected to one end of the vertical groove away from the baffle plate.
A hollow sliding cavity is opened on the outer surface of the slide cover, a lock member is slidably connected in the sliding cavity, and a lock member is slidably connected to the bottom of the lock member in the length direction of the slide cover. A position limiting bar extending along (longitudinal) is connected, the position limiting bar is inside the slide cover.
When the piston rod of the syringe is not pushed by the push rod and the locking member is on the first side of the sliding cavity, the tip of the position limiting bar causes the slide cover to move linearly with respect to the containment chamber. It is abutted against the groove wall of the lateral groove so as to prevent it from being done.
When the piston rod of the syringe is not pushed by the push rod and the locking member translates to the second side of the sliding cavity, the tip of the position limiting bar is in the vertical groove and the slide cover Perform a linear motion with respect to the containment chamber.

Preferably, both outer walls of the slide cover facing each other are provided with a pressing portion recessed inside the slide cover.
The number of the pressing portions is plurality, and the plurality of pressing portions are arranged along the length direction of the slide cover.

Preferably, the surface of the pressing portion is covered with a non-slip pad.
The non-slip pad is provided with a plurality of non-slip protrusions.

Preferably, a chamber lid is further hinged to the outer wall of the containment chamber.

Preferably, an observation window is opened at a portion of the chamber lid corresponding to the holder.

As can be seen from the above technical plan, the embodiment of the present invention has the following advantages.

Embodiments of the present invention provide a syringe assisting device, the syringe assisting device includes a containment chamber, a slide cover, and a holder for fixing the syringe, and a baffle plate is provided at the tip of the containment chamber. The baffle plate is provided with a first through hole for the needle of the syringe to penetrate, and the accommodation chamber is provided with a plurality of scale engaging grooves representing different scales along the length direction thereof. The scale engaging groove is perpendicular to the axial direction of the first through hole, and an engaging plate matching the scale engaging groove is provided on the bottom surface of the tip end portion of the holder, and the engaging plate is the scale engaging plate. Engaged in the groove, the slide cover is slidably exteriord to the outer wall of the containment chamber, the inside of the slide cover communicates with the inside of the containment chamber, and the inside of the slide cover is a syringe. A push rod for abutting on the piston rod is fixedly connected, the slide cover is driven to reciprocate linearly with respect to the accommodation chamber, and the slide cover moves toward the baffle plate. At that time, the push rod pushes the piston rod so that the medicine of the syringe is ejected from the needle.
In this embodiment, the syringe is fixed to the holder and the engagement plate of the holder is engaged with the scale engagement groove, so that the length of the syringe is long and the length exposed to the first through hole is longer than the standard length. If larger, the user engages the engagement plate of the pallet into the rear graduation engagement groove so that the length of the needle exposed from the first through hole matches the standard length, while the length of the syringe. If the needle is short and the length exposed to the first through hole is less than the standard length, the user forwards the pallet so that the length exposed to the first through hole of the needle matches the standard length. It is a syringe assisting device that engages in the graduation engagement groove of the syringe. By always adjusting the length to the standard length, the user can pierce the target position directly with the needle exposed from the first through hole, and the drug does not need to know the depth of the needle inserted into the skin. Avoid the problem of inadequate injections.

In order to clearly explain an embodiment of the present invention or a technical plan of the prior art, the drawings necessary for explaining the embodiment or the prior art will be briefly introduced below. Obviously, the drawings described below are only a few embodiments of the present invention, and other drawings can be obtained based on these drawings on the premise that those skilled in the art do not carry out any activity worthy of inventive step.

It is a structural schematic diagram of the syringe assisting apparatus provided by this invention. It is an internal block diagram of the syringe assisting apparatus provided by this invention. It is a holder structural schematic diagram of the syringe assisting apparatus provided by this invention. It is an enlarged view of the connection relationship between the holder of the syringe assisting device provided by this invention, and the scale engagement groove. It is an exploded view of the baffle plate, the spring, and the cap of the syringe assist device provided by this invention. It is a structural schematic diagram of the sliding groove of the syringe assisting device provided by this invention. It is a schematic diagram of the internal structure of the slide cover of the syringe assist device provided by this invention. It is a fitting relationship diagram between the slide cover and the lock member of the syringe assist device provided by this invention. It is a schematic diagram of the fitting relationship between the position restriction bar of the syringe assisting device provided by the present invention and the L-shaped guide groove. It is a schematic diagram of a syringe configuration to which the syringe assisting device provided by the present invention is related. It is an enlarged view of the fitting relationship between a slide cover and a containment chamber in the syringe assist device provided by this invention.

An embodiment of the present invention discloses a syringe assisting device for solving the technical problem that a conventional syringe assisting device cannot adjust the length of a needle exposed from the assisting device.

In order for a person skilled in the art to better understand the technical proposal of the present invention, the present invention will be described in more detail below based on the drawings and specific embodiments. Obviously, the examples described are not all examples, but only some examples of the present invention. Based on the examples of the present invention, all other examples obtained fall under the scope of protection of the present invention on the premise that those skilled in the art do not carry out activities worthy of inventive step.

With reference to FIGS. 1 to 10, the syringe assisting device provided in this embodiment is
Includes a containment chamber 1, a slide cover 3, and a holder 6 for fixing the syringe 4.
A baffle plate 102 is provided at the tip of the storage chamber 1, and a first through hole 1021 for the needle 403 of the injector 4 to penetrate is provided in the baffle plate 102, and the inside of the storage chamber 1 is provided with a first through hole 1021. A plurality of scale engaging grooves 103 representing different scales are provided along the length direction, the plurality of scale engaging grooves 103 are arranged at predetermined intervals, and the scale engaging grooves 103 are the first through holes. An engaging plate 602 that is perpendicular to the axial direction of 1021 and is aligned with the scale engaging groove 103 is provided on the bottom surface of the tip of the holder 6, and the engaging plate 602 is engaged in the scale engaging groove 103. Combined,
The slide cover 3 is slidably mounted on the outer wall of the storage chamber 1, the inside of the slide cover 3 communicates with the inside of the storage chamber 1, and the piston of the syringe 4 is inside the slide cover 3. The push rod 302 abutting on the rod 401 is fixedly connected, specifically, the push rod 302 is located behind the syringe 4 and on the axis of the syringe 4, and the push rod 302 pushes the end of the piston rod 401. The slide cover 3 is brought into contact with the child 404 and driven to perform a linear reciprocating motion with respect to the accommodation chamber 1.
When the slide cover 3 moves in the direction of the baffle plate 102, the push rod 302 pushes the piston rod 401 so that the medicine of the syringe 4 is ejected from the needle 403.

The predetermined interval between the plurality of scale engaging grooves 103 is determined by the medical injection standard and the type of the syringe 4, and the predetermined interval is not limited in this embodiment.

In this embodiment, the syringe 4 is fixed to the holder 6, and the engaging plate 602 of the holder 6 is engaged with the scale engaging groove 103, so that the syringe 4 is long and exposed from the first through hole 1021. If the length is greater than the standard length, the user adjusts the pallet engagement plate 602 to the rear graduation engagement groove 103 so that the length of the needle 403 exposed from the first through hole 1021 matches the standard length. While engaging inward, if the length of the syringe 4 is short and the length exposed from the first through hole 1021 is less than the standard length, then the length of the needle 403 exposed from the first through hole 1021. To fit the standard length, the user engages the pallet in the anterior graduation engagement groove 103, and the above design allows the user to adjust the position of the holder 6 regardless of the type of syringe 4. By always adjusting the length of the needle 403 of the syringe 4 exposed from the first through hole 1021 to the standard length, the user only needs to pierce the needle exposed from the first through hole 1021 directly into the target position. There is no need to know how deep the needle 403 is inserted into the skin, avoiding the problem of inadequate drug injection.

Further, the rear end portion of the holder 6 is provided with an arc-shaped engaging groove 601 for engaging the outer wall of the syringe 4.

Since the outer wall of the syringe 4 has a columnar structure, by arranging the arc-shaped engaging groove 601 in the holder 6, a removable connection can be realized between the syringe 4 and the holder 6, and the user's syringe can be used. Makes removal or attachment to 4 more convenient.

Further, locking hooks 101 are provided on both inner side walls inside the storage chamber 1, and the two locking hooks 101 are engaged with each other on both opposite sides of the holder 6.

Depending on the design, the fixation to the holder 6 is strengthened to avoid displacement of the holder 6 when the syringe assisting device operates. Further, since the locking hook 101 of this embodiment is made of elastic plastic, the locking hook 101 is separated from the holder 6 by rotating by a certain angle on the outside of the storage chamber 1, whereby the user Removes the holder 6 more conveniently.

Further, a second through hole 501 is formed on one side surface of the cap 5 including the cap 5 and separated from the baffle plate 102, and the axis of the second through hole 501 is the axis of the first through hole 1021. A spring 7 is connected to one side surface 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 so as to compress the spring 7, the needle 403 of the syringe 4 is exposed from the second through hole 501.

It should be noted that some users have difficulty overcoming the visual fear of the sharp needle 403 and the psychological fear of self-injection. Due to the design, the needle 403 is covered by the cap 5, so that the user cannot see the needle 403 when injecting using the syringe assist device, and the cap when the user starts the injection. 5 moves in the direction of the baffle plate 102 so as to compress the spring 7 due to the pressure of the skin, in which case the needle 403 is exposed from the second through hole 501 and inserted into the skin layer, as described above. As can be seen from the description, the needle 403 is invisible to the user and can be used more conveniently for the user who has a visual fear of the needle 403.

Further, sliding grooves 104 are provided on both outer walls of the accommodation chamber 1 facing each other.
Sliding bars 303 matching the sliding groove 104 are provided on both inner side walls of the slide cover 3 facing each other.
The sliding bar 303 is slidably connected to the sliding groove 104.

The sliding grooves 104 are specifically provided on both the left and right outer walls of the accommodation chamber 1, the sliding bars 303 are specifically provided on both the left and right inner side walls of the slide cover 3, and the slide cover 3 is driven. When the linear reciprocating motion is performed with respect to the accommodation chamber 1, the sliding bar 303 slides along the sliding groove 104, and the slide cover 3 slides with respect to the accommodation chamber 1 according to the design. When moving, it becomes smoother and more stable.

Further, an L-shaped guide groove is provided on the outer bottom surface (outer bottom surface) of the accommodation chamber 1, and the L-shaped guide groove includes a vertical groove 105 and a lateral groove 106 communicating with each other. The vertical groove 105 and the sliding groove 104 are parallel to each other, the lateral groove 106 and the sliding groove 104 are perpendicular to each other, and the lateral groove 106 is the baffle of the vertical groove 105. Connected to one end away from the plate 102
A hollow sliding cavity 305 is opened on the outer surface of the slide cover 3, a lock member 304 is slidably connected in the sliding cavity 305, and the lock member 304 is slidably connected to the bottom of the lock member 304. A position limiting bar 3041 extending along the length direction of the slide cover 3 is connected, and the position limiting bar 3041 is inside the slide cover 3.
As shown in FIG. 9, when the piston rod 401 of the syringe 4 is not pushed by the push rod 302 and the lock member 304 is on the first side of the sliding cavity 305, the slide cover 3 is in the accommodation chamber 1. On the other hand, the tip end portion of the position limiting bar 3041 is abutted against the groove wall of the lateral groove 106 so as to prevent linear motion.
When the piston rod 401 of the syringe 4 is not pushed by the push rod 302 and the lock member 304 translates to the second side of the sliding cavity 305, the tip of the position restricting bar 3041 is in the vertical groove 105. The slide cover 3 makes a linear motion with respect to the accommodation chamber 1.

In addition, according to the above-mentioned design, it is possible to avoid the occurrence of a situation in which the drug of the injector 4 is ejected from the needle 403 by accidentally touching the slide cover 3, and specifically, when the user is not injecting. When the lock member 304 is moved to the first side (leftmost side) of the sliding cavity 305, the tip portion of the position limiting bar 3041 is brought into contact with the groove wall of the lateral groove 106, so that the slide cover 3 is accommodated. The tip of the position limiting bar 3041 when the user tries to inject and moves the locking member to the second side (far right) of the sliding cavity 305 without being able to make a linear motion with respect to the chamber 1. Performs lateral motion, away from the groove wall of the lateral groove 106, and the tip of the position limiting bar 3041 finally stops in the vertical groove 105, at which time the slide cover 3 is relative to the accommodation chamber 1. Since the position limiting bar 3041 is arranged along the length direction of the slide cover 3, the position limiting bar 3041 and the vertical groove 105 are parallel to each other, and the slide cover 3 is placed in the accommodation chamber 1. On the other hand, when performing linear motion, the position limiting bar 3041 performs linear motion along the vertical groove 105.

Further, on both outer walls of the slide cover 3 facing each other, a pressing portion 301 recessed inside the slide cover 3 is provided.
The number of the pressing portions 301 is plurality, and the plurality of pressing portions 301 are arranged along the length direction of the slide cover 3.
The surface of the pressing portion 301 is covered with a non-slip pad.
The non-slip pad is provided with a plurality of non-slip protrusions.

With the above design, the user can attach his / her hand to the pressing portion 301 when using the syringe assisting device, which makes the user's use more comfortable, and the design of the non-slip pad allows the user's hand and the pressing portion 301. The frictional force between the hand and the hand can be increased to avoid the occurrence of a hand slip situation.

Further, the chamber lid 2 is hinged to the outer wall of the accommodation chamber 1.

Further, an observation window 201 is opened at a portion of the chamber lid 2 corresponding to the holder 6.

Here, according to the above design, even if the chamber lid 2 is covered with the accommodation chamber 1, the user can observe the usage status of the drug in the syringe 4 through the observation window 201.

Further, referring to FIG. 11, in the present embodiment, a position regulation configuration for preventing the slide cover 3 from detaching from the storage chamber 1 is included, and the position regulation configuration is provided on the inner side wall of the slide cover 3. When the slide cover 3 includes the stopper block 306 provided and the position restricting block 107 provided on the outer wall of the accommodating chamber 1 and the slide cover 3 moves to the rearmost part of the accommodating chamber 1, the stopper block 306 and the position restricting block 107 hit each other. By contacting the slide cover 3, the slide cover 3 can be prevented from continuing to move backward, and the slide cover 3 can be prevented from being separated from the accommodation chamber 1.

The specific principle of use of the syringe assisting device of this embodiment is as follows.

Before using the syringe assist device, first, the chamber lid 2 is opened, the user selects an appropriate scale engagement groove 103 according to the type of syringe 4 and the injection standard, and the engagement plate 602 of the holder 6 is selected. Engage in the graduation engagement groove 103, and the user engages and secures the syringe 4 in the arc engagement groove 601 of the holder 6 and allows the needle 403 of the syringe 4 to penetrate the first through hole 1021. The piston rod 401 is brought into contact with the push rod 302 and the chamber lid 2 is covered in the containment chamber 1, in which case the user can be prepared to start the injection and when the injection is started, the user After removing the plastic protective cap 402 of the needle 403 and aligning the tip of the containment chamber 1 with the injection position, the cap 5 is pressed against the skin surface and moved toward the pressing plate so that the needle 403 is pressed. It penetrates the second through hole 501 and is inserted into the body. Finally, the user moves the lock member 304 to the second side (rightmost side) and presses the slide cover 3, so that the slide cover 3 becomes the accommodation chamber 1. Moving along the baffle plate 102 in the direction of the baffle plate 102, the push rod 302 pushes the piston rod 401 to inject the drug into the body from the needle 403.

Further, when the outer wall of the containment chamber 1 of this embodiment is further provided with a protrusion and the slide cover 3 moves to the end point (at the end of injection), the slide cover 3 and the protrusion generate a clear collision sound. And alert the user when the injection is over.

The above describes in detail the syringe assisting device provided by the present invention, and for those skilled in the art, any of them can be changed within a specific embodiment and application range based on the idea of the embodiment of the present invention. The contents of the specification should not be understood as a limitation to the present invention.

The present invention provides a syringe assist device for self-injection, which is useful in the medical field.

1 ・ ・ ・ Containment chamber 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 regulation block 2 ・ ・ ・ Room lid 201 ・ ・ ・ Observation window 3 ・ ・ ・ Slide cover 301 ・ ・ ・ Pressing part 302 ・ ・ ・ Push rod 303 ・ ・ ・ Sliding bar 304 ・ ・ ・ Lock member 3041 ・ ・ ・ Position regulation 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 engaging groove 602 ・ ・ ・ Engaging plate 7 ・ ・ ・ Spring

Claims (10)

It ’s a syringe assist device,
Includes containment chamber, slide cover, and holder for fixing syringes
A baffle plate is provided at the tip of the containment chamber, the baffle plate is provided with a first through hole for the needle of the syringe to penetrate, and the containment chamber is provided with a first through hole along the length direction thereof. A plurality of scale engaging grooves representing different scales are provided, the plurality of scale engaging grooves are arranged at predetermined intervals, the scale engaging grooves are perpendicular to the axial direction of the first through hole, and the holder. An engaging plate matching the scale engaging groove is provided on the bottom surface of the tip portion of the above, and the engaging plate is engaged in the scale engaging groove.
The slide cover is slidably mounted on the outer wall of the storage chamber, the inside of the slide cover communicates with the inside of the storage chamber, and the inside of the slide cover is abutted against the piston rod of the syringe. The push rod is fixedly connected, and the slide cover is driven so as to reciprocate linearly with respect to the accommodation chamber.
The slide cover is characterized in that the piston rod is pushed by the push rod so that the drug of the syringe is ejected from the needle when moving toward the baffle plate.
Syringe assist device. The rear end of the holder is provided with an arc-shaped engaging groove for engaging the outer wall of the syringe.
The syringe assisting device according to claim 1. Locking hooks are provided on both inner side walls inside the storage chamber, and the two locking hooks are respectively engaged with each other on both opposite sides of the holder.
The syringe assisting device according to claim 1. Further, a second through hole is formed on one side surface of the cap away from the baffle plate, including the cap, and the axis of the second through hole overlaps with the axis of the first through hole, so that the baffle plate of the baffle plate has a second through hole. A spring is connected to one side surface away from the holder, and the other end of the spring is connected to the cap.
When the spring is not compressed, the cap covers the needle of the syringe and
The syringe assisting device according to claim 1, wherein when the cap is moved toward the baffle plate so as to compress the spring, the needle of the syringe is exposed from the second through hole. Sliding grooves are provided on both outer walls of the accommodation chamber facing each other.
Sliding bars matching the sliding grooves are provided on both inner side walls of the slide cover facing each other.
The sliding bar is slidably connected to the sliding groove.
The syringe assisting device according to claim 1. An L-shaped guide groove is provided on the outer bottom surface of the accommodation chamber, and the L-shaped guide groove includes a vertical groove and a lateral groove that communicate with each other, and the vertical groove and the sliding groove. Are parallel to each other, the lateral groove and the sliding groove are perpendicular to each other, and the lateral groove is connected to one end of the vertical groove away from the baffle plate.
A hollow sliding cavity is opened on the outer surface of the slide cover, a lock member is slidably connected in the sliding cavity, and a lock member is slidably connected to the bottom of the lock member in the length direction of the slide cover. A position-restricting bar extending along the slide cover is connected, and the position-restricting bar is inside the slide cover.
When the piston rod of the syringe is not pushed by the push rod and the locking member is on the first side of the sliding cavity, the tip of the position limiting bar causes the slide cover to move linearly with respect to the containment chamber. It is abutted against the groove wall of the lateral groove so as to prevent it from being done.
When the piston rod of the syringe is not pushed by the push rod and the locking member translates to the second side of the sliding cavity, the tip of the position limiting bar is in the vertical groove and the slide cover It is characterized by performing a linear motion with respect to the containment chamber.
The syringe assisting device according to claim 5. On both outer walls of the slide cover facing each other, a pressing portion recessed inside the slide cover is provided.
The number of the pressing portions is plurality, and the plurality of pressing portions are arranged along the length direction of the slide cover.
The syringe assisting device according to claim 1. The surface of the pressing portion is covered with a non-slip pad.
The syringe assisting device according to claim 1, wherein the non-slip pad is provided with a plurality of non-slip protrusions. A chamber lid is further hinged to the outer wall of the containment chamber.
The syringe assisting device according to claim 1. An observation window can be opened at a portion of the chamber lid corresponding to the holder.
The syringe assisting device according to claim 9.

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