A safety syringe device

Abstract

The present invention belongs to the technical field of medical appliances, and particularly relates to a safe syringe device. By providing a needle mounting tube, an injection needle, a rotating protection tube unit, a rotating shaft unit, a closed-state clamping block unit, and an open-state clamping block unit on the cylinder body, the present invention ensures the safety and stability of the injection needle in the early, middle, and late stages of use. The present invention has the following advantages: First, before the syringe device is used, the rotating protection tube unit stably sleeves and protects the injection needle, with a closed-state clamping and fixing effect, and it is not easy for the injection needle to be accidentally exposed; Second, when the syringe device is in use, the rotating protection tube unit rotates and opens, and the injection needle can be opened. Moreover, the rotating protection tube unit also has an open-state clamping and fixing effect, and it is not easy to rotate and drop, without affecting the normal injection operation.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical appliances, and particularly relates to a safe syringe device. Background Art

[0002] The structure of a syringe generally includes a syringe barrel, a plunger rod, and a needle sleeve. Further subdividing the structure of the syringe barrel, it can be divided into a barrel body, a needle fixing tube, an injection needle, and a protruding plate at the rear end of the barrel body.

[0003] During the use of existing syringe barrels, it is not difficult to find at least the following problems:

[0004] First, before use, there is a risk that the needle sleeve is likely to fall off. Once it falls off, the injection needle will pierce the packaging bag, and the entire syringe will be directly scrapped. However, if the needle sleeve is designed with a very strong socketing strength, the subsequent normal operation of pulling it off for use will become very laborious.

[0005] Second, when the syringe is in use, the needle sleeve is completely separated from the syringe barrel and is easily lost. After the injection operation is completed, the scrapped state of the syringe requires the needle sleeve to be put on again. At this time, without the needle sleeve, additional operations are required for the scrapping requirement, such as bending or cutting the injection needle, which greatly increases the workload of medical staff.

[0006] Therefore, in summary, there is an urgent need to improve the safety protection structure of the injection needle, replace the existing common plastic soft sleeve, ensure that the safety protection structure is not easily opened accidentally and is connected to the syringe body, and most importantly, it cannot affect the normal injection operation.

[0007] The Chinese utility model patent with the patent announcement number CN 210159031U and the announcement date of March 20, 2020 discloses a syringe for basic medicine, including a syringe barrel. A piston is arranged inside the syringe barrel. The piston is clamped on the right side surface of a base. A piston rod is fixedly connected to the left side surface of the base, and the left end of the piston rod is fixedly connected to a pressing plate.

[0008] However, for the syringe in this utility model patent, the rubber hose and the first joint are only a simple socketing structure. Therefore, it is very difficult to grasp the strength of this socketing structure, and there is also a risk of easy loss after the rubber hose is removed, which affects the subsequent scrapping operation.

[0009] The Chinese invention patent with the patent publication number CN 107126602A and the publication date of September 5, 2017 discloses a flange cover flipping device for syringe fixation, which includes: a body, a friction member rotatable relative to the body, a fixing frame hinged to the body and accommodating the syringe, and a protective sleeve sleeved outside the syringe. The friction member includes an arc portion, and the center of the arc portion is concentric with the center of the body. The body rotates relative to the fixing frame in a first direction and is hinged in a second direction.

[0010] However, for the flipping device for the syringe in this invention patent, it lacks the positioning function in the opened state after being opened. Therefore, when injecting with the syringe, this flipping device is likely to droop or swing randomly, which will increase the pain during the injection operation and is very unsafe. Summary of the Invention

[0011] The present invention provides a safe syringe device, which can ensure the safety and stability of the injection needle in the early, middle, and late stages of use by setting a needle mounting tube, an injection needle, a rotating protection tube unit, a rotating shaft unit, a closed-state clamping block unit, and an opened-state clamping block unit on the barrel.

[0012] The technical solution adopted by the present invention to solve the above problems is: a safe syringe device, including a barrel, a needle mounting tube, and an injection needle, further including a rotating protection tube unit sleeved on the needle mounting tube and the injection needle, a rotating shaft unit arranged on the needle mounting tube and inserted into the rotating protection tube unit, a closed-state clamping block unit arranged on the needle mounting tube and used for clamping the rotating protection tube unit, and an opened-state clamping block unit arranged on the needle mounting tube and used for clamping the rotating protection tube unit.

[0013] A further preferred technical solution lies in: the number of the rotating shaft units is 2, the closed-state clamping block unit is located at the rear end position in the rotating direction of the rotating protection tube unit, and the opened-state clamping block unit is located at the front end position in the rotating direction of the rotating protection tube unit.

[0014] A further preferred technical solution lies in: the rotating protection tube unit includes a tube body, a needle port arranged on the tube body and used for rotating and moving out the injection needle outward, two rotating holes arranged on the tube body and located on both sides of the needle port respectively and used for inserting and installing the rotating shaft unit, and a head groove arranged on the tube body and used for clamping into the needle mounting tube when the tube body has been rotated and opened.

[0015] A further preferred technical solution lies in: the rotating protection tube unit further includes a card slot arranged on the needle port and used for clamping the closed-state clamping block unit.

[0016] A further preferred technical solution is that the rotating protection tube unit further includes a protruding plate disposed in the end slot and used for limiting and fixing the open state card block unit.

[0017] A further preferred technical solution is that the closed-state card block unit includes a radial card plate arranged on the needle mounting tube and used for inserting into the card slot.

[0018] A further preferred technical solution is that the open state card block unit includes a radial protruding plate arranged on the needle mounting tube, and a card-in plate arranged on the radial protruding plate close to the side surface of the cylinder.

[0019] A further preferred technical solution is that the rotating shaft unit includes a base block provided on the needle mounting tube and used to support the tube body, and a rotating shaft body provided on the base block and used to be inserted into the rotating hole.

[0020] A further preferred technical solution is that: the rotating protection tube unit also includes a locking block arranged in the rotating hole; the rotating shaft unit also includes a closed state positioning groove and an open state positioning groove which are arranged on the rotating shaft and respectively engage and fix the locking block when the tube body is closed and rotated open.

[0021] A further preferred technical solution is that the rotation protection tube unit further includes a deformation opening arranged on the tube body and used to provide a retreat space for the engaging block.

[0022] A further preferred technical solution is that the rotating protection tube unit further comprises an arc-shaped groove which is arranged on the needle opening and is provided with the clamping groove and is used to clamp the needle mounting tube when the tube body has been rotated open.

[0023] The present invention has the following advantages:

[0024] First, before using the syringe device, the protective tube unit is rotated to stably cover the protective injection needle, which has a closed-state snap-in fixing effect and is not easy to accidentally expose the injection needle;

[0025] Second, when the syringe device is in use, the rotating protective tube unit is rotated and opened to open the injection needle, and the rotating protective tube unit also has a snap-fitting effect in the open state, and is not easy to rotate and fall, which does not affect the normal injection operation;

[0026] Third, after the syringe device is used, the direction of the rotating protection tube unit is rotated and reset to cover the injection needle again, ensuring that the entire syringe scrapping operation is simple and convenient, and at this time, the rotating protection tube unit still has a closed state clamping and fixing effect;

[0027] Fourth, the entire rotation and fixation structure supporting the rotary protection tube unit is highly stable and well-correlated, with ingenious structural collocations and functional coordination. The rotary usage mode of the entire injection needle safety protection structure is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. 6 is a schematic structural view of the present invention in a closed state.

[0029] Figure 2 FIG. 10 is a schematic structural view of the present invention in an open state.

[0030] Figure 3 FIG. 14 is a schematic structural view of the rotary protection tube unit in the present invention.

[0031] Figure 4 FIG. 18 is a schematic structural view of the positions of the end head groove and the protruding plate in the present invention.

[0032] Figure 5 FIG. 22 is a schematic structural view of the positions of the rotary shaft unit, the closed state latch unit, and the open state latch unit in the present invention.

[0033] In the drawings, the components represented by the reference numerals are as follows: barrel 11, needle mounting tube 12, injection needle 13, rotary protection tube unit 1, rotary shaft unit 2, closed state latch unit 3, open state latch unit 4, tube body 101, needle opening 102, rotary hole 103, end head groove 104, card slot 105, protruding plate 106, radially engaging plate 301, radially protruding plate 401, engaging plate 402, base block 201, rotary shaft body 202, engaging block 107, closed state positioning groove 203, open state positioning groove 204, deformation opening 108, arc groove 109. DETAILED DESCRIPTION OF THE INVENTION

[0034] The following are only the preferred embodiments of the present invention, and do not limit the scope of the present invention.

[0035] Embodiment: As shown in the attached Figures 1-5 figures, a safety syringe device includes a barrel 11, a needle mounting tube 12, and an injection needle 13, and further includes a rotary protection tube unit 1 sleeved on the needle mounting tube 12 and the injection needle 13, a rotary shaft unit 2 disposed on the needle mounting tube 12 and inserted into the rotary protection tube unit 1, a closed state latch unit 3 disposed on the needle mounting tube 12 and used for latching the rotary protection tube unit 1, and an open state latch unit 4 disposed on the needle mounting tube 12 and used for latching the rotary protection tube unit 1.

[0036] In this embodiment, one side of the injection needle 13 is the front end, and one side of the barrel 11 is the rear end. The rear end of the rotary protection tube unit 1 is always hinged to the rotary shaft unit 2. When the rotary protection tube unit 1 is aligned with the barrel 11, the injection needle 13 can be covered and protected. At this time, the syringe device is in the unused state or the used state. At this time, the rotary protection tube unit 1 is engaged and connected with the closed-state latch unit 3. On the premise of slightly increasing the force required to rotate and open the rotary protection tube unit 1, a relatively large fixing strength of the rotary protection tube unit 1 can be obtained.

[0037] In addition, the front end of the rotary shaft unit 2 rotates backward toward the barrel 11 until the injection needle 13 is completely exposed. At this time, the rotary protection tube unit 1 is engaged and connected with the open-state latch unit 4 to ensure that this rotation-open state is not easily rotated back, otherwise it will interfere with the injection operation.

[0038] Finally, the fully rotated open angle of the rotary protection tube unit 1 is an obtuse angle, which avoids the rotary protection tube unit 1 accidentally touching the patient's skin during the injection operation and ensures sufficient injection operation space.

[0039] The number of the rotary shaft units 2 is two. The closed-state latch unit 3 is located at the rear end position in the rotation direction of the rotary protection tube unit 1, and the open-state latch unit 4 is located at the front end position in the rotation direction of the rotary protection tube unit 1.

[0040] In this embodiment, the rotary shaft units 2 are hingedly installed on both sides of the rotary protection tube unit 1 to ensure that the rotation action of the rotary protection tube unit 1 is smoother and rotates only in one plane. The acting positions of the closed-state latch unit 3 and the open-state latch unit 4 on the rotary protection tube unit 1 are also symmetric and centered with respect to the two hinged parts of the rotary protection tube unit 1.

[0041] Therefore, the two rotary shaft units 2 form a complete rotary shaft in space, and the closed-state latch unit 3 and the open-state latch unit 4 are symmetric about this rotary shaft.

[0042] The rotary protection tube unit 1 includes a tube body 101, a needle tip opening 102 provided on the tube body 101 and used for externally rotating and removing the injection needle 13, two rotary holes 103 provided on the tube body 101 and located on both sides of the needle tip opening 102 respectively and used for inserting and installing the rotary shaft unit 2, and a head end groove 104 provided on the tube body 101 and used for engaging with the needle mounting tube 12 when the tube body 101 has been rotated and opened.

[0043] In this embodiment, the needle opening 102 is the position where the injection needle 13 rotates out. Therefore, the length of the needle opening 102 in the front-back direction needs to be relatively large, and the position, shape, and size of the rotation hole 103 correspond to the rotation shaft unit 2.

[0044] In addition, since the rotation angle of the tube body 101 is generally an obtuse angle, if there is no groove on the rear end edge of the tube body 101, it will directly abut against the cylinder body 11, and the tube body 101 can rotate at most 90°, which will greatly affect the operating space of the injection needle 13. This is the purpose of opening the end head groove 104.

[0045] Finally, the safety protection effect of the rotation protection tube unit 1 on the injection needle 13 is only covering protection without sealing. Therefore, in the case where the entire safety syringe device needs to seal and protect the needle, there are the following several usage methods:

[0046] First, there is a sealed plastic outer package outside the entire syringe device;

[0047] Second, there is also a rubber sleeve inside the tube body 101, which is sleeved on the needle mounting tube 12 to seal and protect the injection needle 13. Before the rotation protection tube unit 1 rotates and opens, the rubber sleeve is pulled out from the front end opening of the tube body 101. When the syringe is scrapped, the rubber sleeve is no longer needed. After all, in the scrapped state, as long as it is ensured that the needle will not prick the operator;

[0048] Third, the front end of the tube body 101 is closed, and there is a plastic film at the needle opening 102, which is a film that can be punctured by the rotation of the injection needle 13. At this time, the sealing effect on the injection needle 13 is of relatively high strength and relatively comprehensive, and it is also sufficient in specific usage scenarios, but it is not completely sealed. After all, there are still gaps at the hinge at the rear end of the tube body 101.

[0049] The rotation protection tube unit 1 further includes a card slot 105 provided on the needle opening 102 and used for engaging the closed-state block unit 3. The rotation protection tube unit 1 further includes a protruding plate 106 provided in the end head groove 104 and used for limiting and fixing the open-state block unit 4.

[0050] In this embodiment, the closed-state block unit 3 needs to cross a part of the tube section of the tube body 101 inside the tube to be engaged with the card slot 105. The open-state block unit 4 needs to cross the protruding plate 106 to ensure the engagement and fixing effect on the rotation protection tube unit 1. In addition, when the tube body 101 rotates and retracts, the open-state block unit 4 can cross the protruding plate 106 or be directly broken off.

[0051] In addition, when the closed-state latch unit 3 engages with the card slot 105, the tube body 101 is flush with the cylinder body 11. Therefore, the direction of the limiting force exerted by the closed-state latch unit 3 on the card slot 105 is towards the rear end. When the open-state latch unit 4 engages with the protruding plate 106, the rotary protection tube unit 1 has been rotated and opened to an inclined angle. Therefore, the direction of the fixing force exerted by the open-state latch unit 4 on the protruding plate 106 is also inclined backwards.

[0052] The closed-state latch unit 3 includes a radial engaging plate 301 provided on the needle mounting tube 12 and used for inserting into the card slot 105.

[0053] In this embodiment, the closed-state latch unit 3 further includes a radial inner backing plate provided on the needle mounting tube 12. Together with the radial engaging plate 301, they form an L-shaped structure to ensure that the tube body 101 will not accidentally rotate and unfold outwards at the closed-state latch unit 3, nor can it rotate inwards anymore. The function of the radial inner backing plate is to completely fix the tube body 101, making the tube body 101 flush with the cylinder body 11.

[0054] The open-state latch unit 4 includes a radial protruding plate 401 provided on the needle mounting tube 12, and a clamping plate 402 provided on the side of the radial protruding plate 401 close to the cylinder body 11.

[0055] In this embodiment, the radial protruding plate 401 and the clamping plate 402 together form an L-shaped "hook" structure for stably "hooking" the protruding plate 106.

[0056] The rotary shaft unit 2 includes a base block 201 provided on the needle mounting tube 12 and used for supporting the tube body 101, and a rotary shaft body 202 provided on the base block 201 and used for inserting into the rotary hole 103.

[0057] In this embodiment, the base block 201 is used to continuously lift the tube body 101 to prevent the tube body 101 from undergoing harmful displacement in the length direction of the rotary shaft unit 2. The rotary shaft body 202 is inserted into the rotary hole 103 to jointly form the hinge part of the tube body 101.

[0058] The rotary protection tube unit 1 further includes a clamping block 107 provided in the rotary hole 103; the rotary shaft unit 2 further includes a closed-state positioning groove 203 and an open-state positioning groove 204 provided on the rotary shaft body 202 and used for clamping and fixing the clamping block 107 when the tube body 101 is closed and rotated and opened respectively.

[0059] In this embodiment, the fixing effects of the tube body 101 in the closed state and the open state are not only ensured by the outer card slots 105 and protruding plates 106, but also by the engaging effects of the engaging blocks 107 on the closed-state positioning grooves 203 and open-state positioning grooves 204 respectively. This "internal and external engagement" method ensures that the tube body 101 has the advantages of being not easily opened accidentally and not easily retracted accidentally.

[0060] In addition, the shape of the rotation hole 103 is rectangular, and the engaging block 107 is provided on one of the long sides, and the other long side is always in mutual contact with the annular surface of the rotating shaft body 202, ultimately ensuring that the rotation and opening / closing action of the tube body 101 is very stable.

[0061] The rotary protection tube unit 1 further includes a deformation opening 108 provided on the tube body 101 and used to provide a retraction space for the engaging block 107.

[0062] In this embodiment, between the closed-state positioning groove 203 and the open-state positioning groove 204 is a partial annular surface of the rotating shaft body 202. When the engaging block 107 switches to engage the closed-state positioning groove 203 and the open-state positioning groove 204, it must cross this partial annular surface. Therefore, the engaging block 107 needs a certain deformation and retraction ability, otherwise the engaging block 107 will be directly broken. This is the function of the deformation opening 108.

[0063] The rotary protection tube unit 1 further includes an arc-shaped groove 109 provided on the needle tip 102, having the card slot 105 and used to engage the needle mounting tube 12 when the tube body 101 has been rotated and opened.

[0064] In this embodiment, after the tube body 101 is completely rotated and opened, the needle mounting tube 12 moves to the side of the rear opening of the needle tip 102. Therefore, the arc-shaped groove 109 is provided to engage the needle mounting tube 12, and the engaging effect here is an auxiliary fixing part in the open state of the tube body 101.

[0065] Correspondingly, the card slot 105 also needs to be provided on the arc-shaped groove 109.

[0066] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various modifications can be made without departing from the gist of the present invention. These are all non-creative modifications and are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A safety syringe device, comprising a barrel (11), a needle mounting tube (12), and an injection needle (13). Characterized in that: It further includes a rotary protection tube unit (1) sleeved on the needle mounting tube (12) and the injection needle (13), a rotary shaft unit (2) provided on the needle mounting tube (12) and inserted into the rotary protection tube unit (1), a closed-state latch unit (3) provided on the needle mounting tube (12) and used for latching the rotary protection tube unit (1), and an open-state latch unit (4) provided on the needle mounting tube (12) and used for latching the rotary protection tube unit (1). The number of the rotary shaft units (2) is two. The closed-state latch unit (3) is located at the rear end position in the rotation direction of the rotary protection tube unit (1), and the open-state latch unit (4) is located at the front end position in the rotation direction of the rotary protection tube unit (1). The rotary protection tube unit (1) includes a tube body (101), a needle opening (102) provided on the tube body (101) and used for rotating the injection needle (13) outwards, two rotary holes (103) provided on the tube body (101) and located on both sides of the needle opening (102) respectively and used for inserting and mounting the rotary shaft unit (2), and a head slot (104) provided on the tube body (101) and used for snapping into the needle mounting tube (12) when the tube body (101) has been rotated and opened. The rotary protection tube unit (1) further includes a card slot (105) provided on the needle opening (102) and used for latching the closed-state latch unit (3). The closed-state latch unit (3) includes a radial latch plate (301) provided on the needle mounting tube (12) and used for inserting into the card slot (105). The rotary shaft unit (2) includes a base block (201) provided on the needle mounting tube (12) and used for supporting the tube body (101), and a rotary shaft body (202) provided on the base block (201) and used for inserting into the rotary hole (103). The rotary protection tube unit (1) further includes an arc slot (109) provided on the needle opening (102) and having the card slot (105) and used for snapping into the needle mounting tube (12) when the tube body (101) has been rotated and opened.

2. The safety syringe device according to claim 1. Characterized in that: The rotary protection tube unit (1) further includes a protruding plate (106) provided in the head slot (104) and used for limiting and fixing the open-state latch unit (4).

3. The safety syringe device according to claim 2. Characterized in that: The open-state latch unit (4) includes a radial protruding plate (401) provided on the needle mounting tube (12), and a latching plate (402) provided on the side of the radial protruding plate (401) close to the barrel (11).

4. The safety syringe device according to claim 1. It is characterized in that: The rotating protection tube unit (1) further includes a clamping block (107) arranged in the rotating hole (103); the rotating shaft unit (2) further includes a closed-state positioning groove (203) and an open-state positioning groove (204) which are arranged on the rotating shaft body (202) and respectively clamp and fix the clamping block (107) when the tube body (101) is closed and rotated open.

5. A safe syringe device according to claim 4, It is characterized in that: The rotating protection tube unit (1) further includes a deformation opening (108) arranged on the tube body (101) and used for providing a retraction space for the clamping block (107).

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