Automatic auxiliary injection instrument

Abstract

The utility model discloses an automatic auxiliary injection instrument which comprises a shell, the shell comprises a front shell and a rear shell which are detachably connected, and the auxiliary injection instrument further comprises a power part, a telescopic sleeve and a compression spring. The power part is mounted in the rear shell and is in driving connection with a piston rod of the injector, and a driving shaft of the power part drives the piston rod to linearly move; the telescopic sleeve is sleeved outside the injector and can move, the moving length of the telescopic sleeve is limited, the outer end of the telescopic sleeve extends out of the front shell, and the extending length is enough to prevent the needle from being exposed; the compression spring is sleeved outside the injector, one end of the compression spring abuts against the end portion of the telescopic sleeve, and the other end of the compression spring is limited in position. According to the auxiliary injection instrument, the injector can be hidden in the shell, the needle head is blocked by the telescopic sleeve, children cannot directly see the needle head, the fear psychology of the children during medicine injection is relieved to a certain extent, meanwhile, the action standardization of a patient during injection is facilitated, and injection pain caused by hand shaking during injection is relieved.

Description

Technical Field

[0001] The utility model relates to a medical auxiliary tool, in particular to an automatic auxiliary injection device. Background Art

[0002] In the prior art, after a child is diagnosed by a doctor, the doctor will prescribe medication for treatment and decide on the treatment method based on the cause and condition of the disease. Injection therapy is a method of injecting medicine into the human body through a syringe. When a child needs an injection, he or she often dodges and moves around due to psychological fear, and needs to be pressed or restrained by an adult. Nurses often need to free up one hand to comfort or assist in pressing. When giving an injection, both hands are needed. It is difficult to complete the steps of wiping and disinfecting the injection site, injecting, and pressing after the needle is removed with one hand.

[0003] As children grow up, they will encounter injections such as liquid medicine injections and vaccine injections. Traditional syringes are mostly composed of a syringe, a needle and a piston rod. The needle is a sharp object, and some children will be afraid of it and resist injections.

[0004] In addition, some people with limited mobility or difficulty moving find it inconvenient to go to the hospital for injections, and using traditional syringes does not clearly determine the depth of the injection, causing trouble for self-injection.

[0005] Therefore, how to overcome the above-mentioned technical problems and defects becomes a key issue that needs to be solved. Utility Model Content

[0006] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide an automatic assisted injection device. The purpose of designing the injection device is to hide the syringe to prevent children from being directly aware of it and causing fear. At the same time, it helps patients to standardize their injection movements and reduce the injection pain caused by hand shaking during injection. The automatic assisted injection device of the utility model is convenient for children to give injections, and also convenient for people with limited mobility to give injections by themselves. Of course, the injection device is also suitable for ordinary people.

[0007] In order to solve the above technical problems, the utility model is implemented by the following scheme: an automatic auxiliary injection device of the utility model comprises a shell, the shell comprises a front shell and a rear shell which are detachably connected, the front shell has a cavity for installing a syringe, and the outer end of the front shell has a needle outlet connected to the cavity;

[0008] The injection device also includes:

[0009] A power unit is installed in the rear housing and drives a piston rod connected to the syringe. The driving shaft of the power unit drives the piston rod of the syringe to move linearly.

[0010] A telescopic sleeve, which is sleeved outside the syringe and can move along the syringe, wherein the movable length of the telescopic sleeve is limited, and the outer end thereof extends out of the front shell and the extended length is sufficient to prevent the needle of the syringe from being exposed;

[0011] A compression spring is sleeved outside the syringe, one end of the compression spring abuts against the end of the telescopic sleeve, and the other end of the compression spring is limited in position.

[0012] Furthermore, the front shell and the rear shell are snap-connected structures, and after the front shell is released, the syringe placed in the front shell can be removed.

[0013] Furthermore, a limiting member for positioning the syringe is provided in the front shell. The limiting member is sleeved outside the syringe and has an annular groove at one end. One end of the compression spring abuts against the annular groove.

[0014] Furthermore, a sleeve for the piston rod to move is installed in the rear shell, and one side of the sleeve has a side hole passing through both ends of the sleeve;

[0015] The power unit includes a power source, a bracket with a guide rod, a slider and a screw rod. The bracket is installed in the rear shell, and the power source is installed at one end of the bracket. Two guide rods are connected between the opposite inner sides of the bracket. The power source drives and connects the screw rod.

[0016] The slider has two sliding grooves, which are slidably connected to the two guide rods. The slider is threadedly connected to the screw rod, and the slider is driven to move by the rotation of the screw rod. A push plate is connected to one side of the slider, and the push plate enters into the sleeve from the end of the sleeve. The push plate is used to push the piston rod.

[0017] Furthermore, the power source is an electric motor.

[0018] Furthermore, the rear shell has a window for observing the movement process and movement distance of the piston rod.

[0019] Furthermore, a scale plate with scales is attached to the surface of the rear shell.

[0020] Furthermore, the scale plate has a long hole that can overlap with the window, and a length scale pattern is provided on the edge of the long hole.

[0021] Furthermore, the front shell is provided with ribs to limit the telescopic sleeve.

[0022] Furthermore, the injection device also includes:

[0023] a rechargeable battery installed in the rear housing;

[0024] A circuit board and a control panel are installed in the rear shell, the rechargeable battery is electrically connected to the circuit board, and the control panel is stacked on the circuit board to form a contact-type electrical connection.

[0025] Compared with the prior art, the beneficial effects of the utility model are:

[0026] 1. The auxiliary injection device of the utility model can hide the syringe in the shell, and the needle is blocked by the telescopic sleeve. Children cannot directly see the needle, which to a certain extent alleviates the fear of children.

[0027] 2. The injection device of the utility model can automatically advance the piston rod, and the insertion depth of the needle is limited, which is convenient for people with limited mobility to operate.

[0028] 3. The auxiliary injection device of the utility model can enable the syringe to help the patient standardize the injection action and reduce the injection pain caused by hand shaking during injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a stereoscopic diagram of the injection device of the present utility model.

[0030] Figure 2 It is a cross-sectional view of the injection device of the utility model.

[0031] Figure 3 This is an exploded view of the internal structure of the injection device of the utility model.

[0032] Figure 4 This is a diagram of the internal structure of the injection device of the utility model after the outer shell is removed.

[0033] Figure 5 It is a schematic diagram of the travel of the slider of the utility model.

[0034] Figure 6 It is a structural diagram of the slider of the utility model.

[0035] Figure 7 This is a structural diagram of the power unit of the utility model.

[0036] Figure 8 This is a structural diagram of the injection assembly of the utility model.

[0037] Fig. 9 The utility model is a three-dimensional diagram of the injection device showing the scale side.

[0038] Fig.10 This is a structural diagram of the scale plate of the utility model.

[0039] Fig.11 This is a structural diagram of the utility model after the front shell and the rear shell are disassembled.

[0040] Fig.12This is a structural diagram of the rear shell connection end of the utility model.

[0041] Fig.13 This is a structural diagram of the front shell connection end of the utility model.

[0042] Markings in the accompanying drawings: housing 1, telescopic sleeve 2, control panel 3, circuit board 4, rechargeable battery 5, scale plate 6, power unit 7, injection key 8, syringe 9, compression spring 10, limiter 11, sleeve 12, reset key 31, pause key 32, indicator light 33, switch key 34, long hole 61, length scale pattern 62, power source 71, guide rod 72, bracket 73, screw rod 74, slider 75, needle 91, syringe 92, piston rod 93, front shell 101, rear shell 102, slide groove 751, push plate 752, male buckle head 1011, buckle hole 1021. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model, so that the advantages and features of the utility model can be more easily understood by those skilled in the art, thereby making a clearer and more explicit definition of the protection scope of the utility model. Obviously, the embodiments described in the utility model are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0044] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0045] Embodiment 1: The specific structure of the utility model is as follows:

[0046] Please refer to the attached Figure 1-13 The utility model is an automatic auxiliary injection device, comprising a housing 1, wherein the housing 1 comprises a front housing 101 and a rear housing 102 which are detachably connected, wherein the front housing 101 has a cavity for installing a syringe 9, and an outer end thereof has a needle outlet communicated with the cavity;

[0047] The injection device also includes:

[0048] The power unit 7 is installed in the rear housing 102, and drives the piston rod 93 connected to the syringe 9. The driving shaft of the power unit 7 drives the piston rod 93 of the syringe 9 to move linearly;

[0049] The telescopic sleeve 2 is sleeved outside the syringe 9 and can move along the syringe 9. The movable length of the telescopic sleeve 2 is limited, and the outer end thereof extends out of the front shell 101 and the extended length is sufficient to prevent the needle 91 of the syringe 9 from being exposed.

[0050] The compression spring 10 is sleeved outside the syringe 9, one end of the compression spring 10 abuts against the end of the telescopic sleeve 2, and the other end of the compression spring 10 is limited in position.

[0051] A preferred technical solution of this embodiment: the front shell 101 and the rear shell 102 are a buckle-connected structure, and after the front shell 101 is disengaged, the syringe 9 placed in the front shell 101 can be removed.

[0052] A preferred technical solution of this embodiment: a limiting member 11 for positioning the syringe 9 is provided inside the front shell 101. The limiting member 11 is sleeved outside the syringe 9 and has an annular groove at one end. One end of the compression spring 10 abuts against the annular groove.

[0053] A preferred technical solution of this embodiment: a sleeve 12 for the piston rod 93 to move is installed in the rear shell 102, and one side of the sleeve 12 has a side hole penetrating through both ends of the sleeve 12;

[0054] The power unit 7 includes a power source 71, a bracket 73 with a guide rod 72, a slider 75 and a screw rod 74. The bracket 73 is installed in the rear housing 102, and the power source 71 is installed at one end of the bracket. Two guide rods 72 are connected between the opposite inner sides of the bracket 73. The power source 71 drives and connects the screw rod 74.

[0055] The slider 75 has two sliding grooves 751, and the two sliding grooves 751 are slidably connected to the two guide rods 72. The slider 75 is screwed to the screw rod 74, and the slider 75 is driven to move by the rotation of the screw rod 74. A push plate 752 is connected to one side of the slider 75, and the push plate 752 enters into the sleeve 12 from the end of the sleeve 12. The push plate 752 is used to push the piston rod 93.

[0056] A preferred technical solution of this embodiment: the power source 71 is a motor.

[0057] A preferred technical solution of this embodiment: the rear housing 102 has a window for observing the movement process and movement distance of the piston rod 93.

[0058] A preferred technical solution of this embodiment: a scale plate 6 with scales is attached to the surface of the rear shell 102 .

[0059] A preferred technical solution of this embodiment: the scale plate 6 has a long hole 61 that can overlap with the window, and a length scale pattern 62 is provided on the edge of the long hole 61.

[0060] A preferred technical solution of this embodiment: the front shell 101 is provided with ribs to limit the telescopic sleeve 2.

[0061] A preferred technical solution of this embodiment: the injection device also includes:

[0062] A rechargeable battery 5 installed in the rear housing 102;

[0063] The circuit board 4 and the control panel 3 are installed in the rear housing 102 . The rechargeable battery 5 is electrically connected to the circuit board 4 . The control panel 3 is stacked on the circuit board 4 and forms a contact-type electrical connection.

[0064] Embodiment 2:

[0065] The following is the working principle of the injection device of the utility model:

[0066] like Fig.12 As shown, two buckle holes 1021 are provided at the connecting end of the rear shell 102. The two buckle holes 1021 are located on both sides of the circular hole and one buckle hole 1021 rotates 180 degrees around the circular hole to overlap with the other buckle hole 1021. One end of the buckle hole 1021 is wide and the other end is narrow. The circular hole on the rear shell 102 is large enough for the piston rod 93 to pass through.

[0067] like Fig.13 As described above, two male buckle heads 1011 are provided at the connecting end of the front shell 101, and the two male buckle heads 1011 are simultaneously inserted into the wide openings of the two buckle holes 1021, and then rotated at an angle so that the clamping parts of the male buckle heads 1011 enter the narrow openings to form a clamping position, so that the front shell 101 can be quickly buckled onto the rear shell 102.

[0068] Initially, the push plate 752 is at the rear end. The injection assembly filled with injection liquid is loaded into the front shell 101, and then the pulled out piston rod 93 is aligned with the circular hole and sent into the sleeve 12, and the front shell 101 is buckled with the rear shell 102 to complete the installation of the syringe 9.

[0069] Since the telescopic sleeve 2 is pushed out by the compression spring 10, the needle 91 is hidden in the telescopic sleeve 2, and the child cannot see the needle 91 during the injection, which alleviates the child's fear to a certain extent. During the injection process, the telescopic sleeve 2 will shrink into the interior of the front shell 101, and after the injection, the telescopic sleeve 2 will be pushed out again by the compression spring 10.

[0070] After the needle 91 is inserted into the skin, the switch key 34 is pressed, and the injection key 8 is pressed again. The injection key 8 is at the tail end of the rear shell 102. After the injection key 8 is pressed, the motor starts, and the motor drives the screw rod 74 to rotate. The rotation of the screw rod 74 causes the slider 75 to move toward the circular hole, and the push plate 752 on the slider 75 pushes the piston rod 93 to move toward the circular hole.

[0071] The operator determines the moving distance of the piston rod 93 by the length scale pattern 62. When the injection amount is reached (usually the amount is to inject the injection liquid in the syringe 92), the injection assembly of the utility model will emit a prompt sound to remind the operator to pull out the needle 91 and press the reset button 31 to reset the push plate 752.

[0072] The front shell 101 is rotated to separate the front shell 101 from the rear shell 102, the syringe 9 is removed and thrown into a waste recycling box, and the telescopic sleeve 2 is disinfected for next use.

[0073] Embodiment 3:

[0074] The indicator light 33 is used to display the power level of the rechargeable battery 5 .

[0075] Embodiment 4:

[0076] like Fig.13 As shown, the front shell 101 of the present invention can be matched with a variety of syringes 9 of different specifications, such as A-type syringes, B-type syringes, and C-type syringes.

[0077] In summary, the injection assembly of the utility model is hidden in the housing, and the needle is blocked by the telescopic sleeve, so that children cannot directly see the needle, which, to a certain extent, alleviates the fear of children. The injection device of the utility model can automatically advance the piston rod, and the insertion depth of the needle is limited, which is convenient for people with limited mobility to operate.

[0078] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic auxiliary injection device, comprising a housing (1), characterized in that: The housing (1) comprises a front housing (101) and a rear housing (102) which are detachably connected; the front housing (101) has a cavity for installing a syringe (9), and an outer end thereof has a needle outlet communicated with the cavity; The injection device also includes: A power unit (7) is installed in the rear housing (102) and drives a piston rod (93) connected to the syringe (9). The driving shaft of the power unit (7) drives the piston rod (93) of the syringe (9) to move linearly. a telescopic sleeve (2) which is sleeved outside the syringe (9) and can move along the syringe (9); the movable length of the telescopic sleeve (2) is limited, and the outer end thereof extends out of the front shell (101) and the extended length is sufficient to prevent the needle (91) of the syringe (9) from being exposed; A compression spring (10) is sleeved outside the syringe (9), one end of the compression spring (10) abuts against the end of the telescopic sleeve (2), and the other end of the compression spring (10) is positioned in a limited position.

2. The automatic assisted injection device according to claim 1, characterized in that: The front shell (101) and the rear shell (102) are snap-connected structures, and after the front shell (101) is released, the syringe (9) placed in the front shell (101) can be removed.

3. The automatic assisted injection device according to claim 1, characterized in that: A limiting member (11) for positioning the syringe (9) is provided inside the front shell (101); the limiting member (11) is sleeved outside the syringe (9) and has an annular groove at one end thereof, and one end of the compression spring (10) abuts against the annular groove.

4. The automatic assisted injection device according to claim 1, characterized in that: A sleeve (12) for the piston rod (93) to move is installed in the rear shell (102), and one side of the sleeve (12) has a side hole that passes through both ends of the sleeve (12); The power unit (7) comprises a power source (71), a bracket (73) having a guide rod (72), a slider (75) and a screw rod (74); the bracket (73) is installed in the rear shell (102), and the power source (71) is installed at one end of the bracket; two guide rods (72) are connected between the opposite inner sides of the bracket (73); and the power source (71) drives and connects the screw rod (74); The slider (75) has two slide grooves (751), and the two slide grooves (751) are slidably connected to the two guide rods (72). The slider (75) is screwed to the screw rod (74), and the slider (75) is driven to move by the rotation of the screw rod (74). One side of the slider (75) is connected to a push plate (752), and the push plate (752) enters into the sleeve (12) from the end of the sleeve (12). The push plate (752) is used to push the piston rod (93).

5. The automatic assisted injection device according to claim 4, characterized in that: The power source (71) is a motor.

6. The automatic assisted injection device according to claim 4, characterized in that: The rear housing (102) has a window for observing the movement process and movement distance of the piston rod (93).

7. The automatic assisted injection device according to claim 6, characterized in that: A scale plate (6) with scales is attached to the surface of the rear shell (102).

8. The automatic assisted injection device according to claim 7, characterized in that: The scale plate (6) has a long hole (61) that can overlap with the window, and a length scale pattern (62) is provided on the edge of the long hole (61).

9. The automatic assisted injection device according to claim 1, characterized in that: The front shell (101) is provided with ribs to limit the telescopic sleeve (2).

10. The automatic assisted injection device according to claim 1, characterized in that: The injection device also includes: A rechargeable battery (5) installed in the rear housing (102); A circuit board (4) and a control panel (3) are installed in the rear shell (102); the rechargeable battery (5) is electrically connected to the circuit board (4); and the control panel (3) is stacked on the circuit board (4) to form a contact-type electrical connection.

Images