WO2023088346A1

WO2023088346A1 - Safe syringe device

Info

Publication number: WO2023088346A1
Application number: PCT/CN2022/132482
Authority: WO
Inventors: 郭融; 沈靖
Original assignee: 上海倍莱弗科技有限公司
Priority date: 2021-11-19
Filing date: 2022-11-17
Publication date: 2023-05-25

Abstract

A safe syringe device. A needle installation tube (12), an injection needle (13), a rotating protective tube unit (1), a rotating shaft unit (2), a closed state block unit (3), and an open state block unit (4) are provided on a syringe body (11), so that the safety and stability of the injection needle (13) can be ensured in the early, middle and late stages of use. The safe syringe device has the following advantages: first, before the syringe device is used, the rotating protective tube unit (1) can stably cover and protect the injection needle (13), and has the effect of snap-fitting and fixing in a closed state, and it is not easy to accidentally expose the injection needle (13); and second, when the syringe device is in use, the rotating protective tube unit (1) is rotated and opened to expose the injection needle (13), and the rotating protective tube unit (1) also has the effect of snap-fitting and fixing in an open state, and does not easily rotatably fall, thus not affecting a normal injection operation.

Description

A safety syringe device

technical field

The invention belongs to the technical field of medical appliances, in particular to a safety syringe device.

Background technique

The structure of the syringe generally includes a syringe, a push rod, and a needle cover, and the structure of the syringe can be further subdivided into a cylinder body, a needle fixing tube, an injection needle, and a protruding plate at the rear end of the cylinder body.

technical problem

During the use of existing syringes, it is not difficult to find that there are at least the following problems:

First, before use, there is a risk that the needle cover is easy to fall, and once it falls, the injection needle will pierce the packaging bag, and the entire syringe will be scrapped directly, but if the needle cover is designed to have a strong socket , then the subsequent normal unplugging operation becomes very laborious;

Second, when the syringe is in use, the needle cover is completely separated from the needle barrel, which is easy to be lost and lost. After the injection operation is completed, the syringe needs to be put on the needle cover again in the scrapped state. Additional operations are required, such as bending and cutting the injection needle, which greatly increases the workload of medical staff.

So to sum up, there is an urgent need to improve the safety protection structure of the injection needle to replace the existing common plastic soft cover, to ensure that the safety protection structure is not easy to be accidentally opened, connected with the main body of the syringe, and the most important thing is that it cannot be affected. Normal injection operation.

The patent announcement number is CN 210159031U, and the Chinese utility model patent with the announcement date of 2020.03.20 discloses a syringe for basic medicine, including a syringe. The inside of the syringe is provided with a piston, and the piston is clamped on the On the right side, a piston rod is fixedly connected to the left side of the base, and an extrusion plate is fixedly connected to the left end of the piston rod.

However, in the syringe in this utility model patent, there is only a simple sleeve structure between the rubber hose and the first joint, so the strength of the sleeve structure is difficult to grasp, and there is also a problem that the rubber hose is easy to remove after the rubber hose is taken off. The risk of loss will affect the subsequent scrapping operation.

The patent publication number is CN 107126602A, and the Chinese invention patent with the publication date of 2017.09.05 discloses a flange cover flipping device for fixing the syringe, which includes: a body, a friction member that can rotate relative to the body, and a body hinge A fixed frame connected to and accommodated in the syringe, and a protective sleeve sheathed on the outside of the syringe, wherein the friction member includes an arc-shaped portion, and the center of the arc-shaped portion is concentric with the center of the body, and the body is opposite in the first direction The mount rotates and is hinged in a second direction.

However, the turning device for the syringe in this invention patent lacks the positioning function in the open state after it is opened, so when the syringe is being injected, the turning device tends to hang down or swing randomly, which will increase the pain of the injection operation It's very unsafe.

technical solution

The invention provides a safe syringe device, which can ensure that the needle installation tube, the injection needle, the rotation protection tube unit, the rotation shaft unit, the closed block unit and the open state block unit are arranged on the cylinder body to ensure The injection needle can be safe and stable in the early, middle and late stages of use.

The technical solution adopted by the present invention to solve the above-mentioned problems is: a safety syringe device, including a cylinder body, a needle installation tube, and an injection needle, and a rotating protection tube unit sleeved on the needle installation tube and the injection needle, The rotation axis unit arranged on the needle installation tube and inserted into the rotation protection tube unit, the closed block unit arranged on the needle installation tube and used to engage the rotation protection tube unit, and the The needle is installed on the tube and is used to engage the open state clamping block unit of the rotating protection tube unit.

A further preferred technical solution is that: the number of the rotating shaft units is two, the closed block unit is located at the rear end position in the rotation direction of the rotation protection tube unit, and the open state block unit is located at the at the front end position in the direction of rotation of the rotation protection tube unit described above.

A further preferred technical solution is that: the rotating protection tube unit includes a tube body, which is arranged on the tube body and is used to rotate outward to remove the needle port of the injection needle, is arranged on the tube body and is respectively located at the The two rotation holes on both sides of the needle port are used to insert and install the rotation shaft unit, and the end is arranged on the tube body and used to snap into the needle installation tube when the tube body has been rotated open head groove.

A further preferred technical solution is that: the rotating protection tube unit further includes a locking slot provided on the needle port and used to engage the closed clamping block unit.

A further preferred technical solution is that: the rotation protection tube unit further includes a protruding plate disposed in the end groove and used for limiting and fixing the clamping block unit in the open state.

A further preferred technical solution is that: the clamping block unit in the closed state includes a radial clamping plate arranged on the needle installation tube and used for inserting into the clamping groove.

A further preferred technical solution is that: the block unit in the open state includes a radially protruding plate arranged on the needle installation tube, and a card set on the side of the radially protruding plate close to the cylinder body. into the board.

A further preferred technical solution is that: the rotating shaft unit includes a base block arranged on the needle mounting tube and used to support the tube body, and a rotating shaft arranged on the base block and used for inserting into the rotating hole shaft.

A further preferred technical solution is that: the rotation protection tube unit further includes an engaging block arranged in the rotation hole; the rotation shaft unit also includes a block arranged on the rotation shaft body and closed on the tube body. 1. When rotating and opening, the closed state positioning groove and the open state positioning groove of the engaging block are engaged and fixed respectively.

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

A further preferred technical solution is that: the rotation protection tube unit also includes an arc-shaped arc that is arranged on the needle port and is provided with the locking groove, and is used to snap into the needle installation tube when the tube body has been rotated open. groove.

Beneficial effect

The present invention has the following advantages:

First, before the syringe device is used, the rotating protective tube unit stably covers the protective injection needle, which has the effect of locking and fixing in a closed state, and is not easy to accidentally expose the injection needle;

Second, when the syringe device is in use, the rotating protection tube unit can be rotated and opened to open the injection needle, and the rotating protection tube unit also has the effect of snapping and fixing in the open state, which is not easy to rotate and drop, and does not affect the normal injection operation;

Third, after the syringe device is used, the direction of the rotating protective tube unit is rotated and reset, and the injection needle can be covered and protected again, ensuring that the entire syringe is scrapped easily and conveniently, and at this time, the rotating protective tube unit still has the effect of engaging and fixing in a closed state;

Fourth, the entire rotating and fixed structure supporting the rotating protection tube unit has high stability and good correlation, and the structure and function are ingeniously coordinated. The rotation and use of the entire injection needle safety protection structure is stable and reliable.

Description of drawings

Fig. 1 is a schematic structural diagram of the present invention in a closed state.

Fig. 2 is a schematic diagram of the structure of the present invention in an open state.

Fig. 3 is a schematic structural view of the rotating protection tube unit in the present invention.

Fig. 4 is a schematic diagram of the location and structure of the terminal groove and the protruding plate in the present invention.

Fig. 5 is a schematic diagram of the positions and structures of the rotating shaft unit, the block unit in the closed state and the block unit in the open state in the present invention.

In the accompanying drawings, the parts represented by each label are as follows: cylinder body 11, needle mounting tube 12, injection needle 13, rotating protection tube unit 1, rotating shaft unit 2, block unit 3 in closed state, block unit 4 in open state, Tube body 101, needle port 102, rotation hole 103, end slot 104, card slot 105, protruding plate 106, radial engaging plate 301, radial protruding plate 401, clamping plate 402, base block 201, for rotation The shaft body 202 , the engaging block 107 , the positioning groove 203 in the closed state, the positioning groove 204 in the open state, the opening 108 for deformation, and the arc groove 109 .

Embodiments of the present invention

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

Embodiment: As shown in accompanying drawings 1-5, a safety syringe device includes a cylinder body 11, a needle installation tube 12, and an injection needle 13, and also includes a The rotation protection tube unit 1 is set on the needle installation tube 12 and inserted into the rotation axis unit 2 of the rotation protection tube unit 1, which is set on the needle installation tube 12 and is used to engage the rotation protection tube unit 1 in the closed state, and the open state block unit 4 which is arranged on the needle installation tube 12 and is used to engage the rotation protection tube unit 1 .

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, and the rear end of the rotating protective tube unit 1 is always hinged on the rotating shaft unit 2, and the If the rotating protection tube unit 1 is aligned with the cylinder body 11, the injection needle 13 can be sealed and protected. At this time, the syringe device is not in use, or it is in the state of being used. At this time, the rotation protection tube unit 1 and the The clamping block unit 3 in the closed state is engaged and connected, and on the premise of slightly increasing the force required for the rotation and opening of the rotation protection tube unit 1 , a relatively large fixing strength of the rotation protection tube unit 1 can be obtained.

In addition, the front end of the rotating shaft unit 2 is rotated backward toward the side of the barrel 11 until the injection needle 13 is completely exposed. The snap-fit connection ensures that the rotating open state is not easy to rotate and retract, otherwise it will interfere with the injection operation.

Finally, the full rotation opening angle of the rotating protection tube unit 1 is an obtuse angle, so as to prevent the rotating protection tube unit 1 from accidentally touching the patient's skin during the injection operation and ensure sufficient injection operation space.

The number of the rotating shaft units 2 is two, the closed block unit 3 is located at the rear end position in the rotation direction of the rotation protection tube unit 1, and the open state block unit 4 is located at the rotation protection tube unit 1. At the front end position in the direction of rotation of the tube unit 1.

In this embodiment, the rotation shaft unit 2 is hingedly installed on both sides of the rotation protection tube unit 1 to ensure that the rotation movement of the rotation protection tube unit 1 is more stable, and only rotates in one plane, while The active positions of the closed block unit 3 and the open state block unit 4 on the rotating protective tube unit 1 are also symmetrical and centered with respect to the two hinges of the rotary protective tube unit 1 .

Therefore, the two rotating shaft units 2 form a complete rotating shaft in space, and the locking block unit 3 in the closed state and the locking block unit 4 in the open state are symmetrical about this rotating shaft.

The rotation protection tube unit 1 includes a tube body 101, which is arranged on the tube body 101 and is used to rotate outward to remove the needle port 102 of the injection needle 13, which is arranged on the tube body 101 and respectively located on the needle head The two rotation holes 103 on both sides of the opening 102 are used to insert and install the rotation shaft unit 2, and are arranged on the tube body 101 and are used to snap into the needle when the tube body 101 has been rotated open. The end slot 104 of the tube 12 is installed.

In this embodiment, the needle port 102 is the position where the injection needle 13 rotates out, so the length of the needle port 102 in the front and back direction needs to be relatively large, and the position, shape and size of the rotation hole 103, All correspond to the rotating shaft unit 2 .

In addition, since the rotation angle of the tube body 101 is generally an obtuse angle, if the rear edge of the tube body 101 is not slotted, it will directly touch 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, which is the purpose of opening the terminal groove 104.

Finally, the safety protection effect of the rotating protection tube unit 1 on the injection needle 13 is only covering protection without sealing, so the entire safety syringe device has the following several usage methods under the requirement of sealing and protecting the needle :

First, the entire syringe device has a sealed plastic outer packaging;

Second, there is also a rubber sleeve in the tube body 101, which is set on the needle installation tube 12 to seal and protect the injection needle 13. Before the rotation protection tube unit 1 is rotated and opened, the rubber sleeve is removed from the The front end opening of the tube body 101 is pulled out, and when the syringe is discarded, the rubber sleeve is not needed. After all, it is only necessary to ensure that the needle will not pierce the operator in the scrapped state;

Third, the front end of the tube body 101 is closed, and the needle port 102 is provided with a plastic 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 relatively large. The strength is relatively comprehensive, and it is sufficient in specific usage scenarios, but it is not completely sealed, after all, there is still a gap at the rear hinge of the tube body 101 .

The rotating protection tube unit 1 further includes a locking groove 105 arranged on the needle port 102 and used for locking the locking block unit 3 in the closed state. The rotation protection tube unit 1 further includes a protruding plate 106 disposed in the end groove 104 and used for limiting and fixing the clamping block unit 4 in the open state.

In this embodiment, the clamping block unit 3 in the closed state needs to pass over a part of the pipe body 101 on the inner side of the tube to be clipped into the clamping groove 105, and the clamping block unit 4 in the open state needs to pass over the convex out of the plate 106 to ensure the locking and fixing effect on the rotating protection tube unit 1, and in addition, when the tube body 101 is rotated and retracted, the opening block unit 4 can pass over the protruding plate 106, or It can be broken directly.

In addition, when the clamping block unit 3 in the closed state is engaged with the clamping slot 105, the tube body 101 is flush with the cylinder body 11, so the clamping block unit 3 in the closed state is aligned with the clamping slot 105. The direction of the limit action force is towards the rear end, and when the clamping block unit 4 engages the protruding plate 106 in the open state, the rotating protection tube unit 1 has been rotated and opened to an angle of inclination, so the open state The direction of the fixing force of the block unit 4 on the protruding plate 106 is also obliquely backward.

The clamping block unit 3 in the closed state includes a radial engaging plate 301 disposed on the needle installation tube 12 and used for inserting into the engaging slot 105 .

In this embodiment, the block unit 3 in the closed state further includes a radially inner backing plate arranged on the needle installation tube 12, which forms an L-shaped structure together with the radial engaging plate 301 to ensure that the The tube body 101 will not be accidentally rotated outwards at the block unit 3 in the closed state, nor can it be rotated inward again. The function of the radially inner backing plate is to completely fix the tube body 101. Make the tube body 101 flush with the cylinder body 11 .

The block unit 4 in the open state includes a radially protruding plate 401 disposed on the needle installation tube 12, and a snap-in plate disposed on the side of the radially protruding plate 401 close to the cylinder body 11 402.

In this embodiment, the radial protruding plate 401 and the snap-in plate 402 together form an L-shaped “hook” structure for stably “hooking” the protruding plate 106 .

The rotating shaft unit 2 includes a base block 201 arranged on the needle mounting tube 12 and used to support the tube body 101 , and a rotating shaft arranged on the base block 201 and used to be inserted into the rotating hole 103 Body 202.

In this embodiment, the base block 201 is used to continuously lift up the pipe body 101 to prevent the harmful deviation of the pipe body 101 in the length direction of the rotating shaft unit 2, while the rotating shaft The body 202 is inserted into the rotation hole 103 to jointly form the hinge part of the pipe body 101 .

The rotation protection tube unit 1 also includes an engaging block 107 arranged in the rotation hole 103; the rotation shaft unit 2 also includes a block arranged on the rotation shaft body 202 and closed on the tube body 101, When rotating and opening, the closed state positioning groove 203 and the open state positioning groove 204 of the engaging block 107 are engaged and fixed respectively.

In this embodiment, the fixing effect of the closed state and the open state of the tube body 101 is not only ensured by the locking groove 105 and the protruding plate 106 on the outside, but also by the engaging block 107 on the The locking effect on the positioning groove 203 in the closed state and the positioning groove 204 in the open state, the "internal and external engagement together" mode ensures that the tube body 101 has the advantages of being difficult to accidentally open and fold.

In addition, the shape of the rotating hole 103 is rectangular, one of the long sides is provided with the engaging block 107, and the other long side is always in contact with the annular surface of the rotating shaft body 202, finally ensuring the The rotation and opening of the tube body 101 is very stable.

The rotation protection tube unit 1 further includes a deformation opening 108 provided on the tube body 101 and used to provide a retreat space for the engaging block 107 .

In this embodiment, between the closed state positioning groove 203 and the open state positioning groove 204 is a part of the annular surface of the rotating shaft body 202, and the engaging block 107 is switching to engage the When the positioning groove 203 in the closed state and the positioning groove 204 in the open state, it is necessary to cross this part of the annular surface, so the engaging block 107 needs a certain deformation retraction ability, otherwise the engaging block 107 is directly broken This is the function of the opening 108 for deformation.

The rotation protection tube unit 1 also includes an arc-shaped slot arranged on the needle port 102 and provided with the locking groove 105 and used to snap into the needle installation tube 12 when the tube body 101 has been rotated open. 109.

In this embodiment, after the tube body 101 is fully rotated and opened, the needle installation tube 12 moves to the side of the rear opening of the needle port 102, so the arc-shaped groove 109 is provided for engaging The needle is installed on the tube 12 , and the engaging effect here is an auxiliary fixing part of the opened state of the tube body 101 .

Correspondingly, the card slot 105 will also be arranged on the arc-shaped slot 109 .

The embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, within the scope of knowledge possessed by those of ordinary skill in the technical field, it can also be done without departing from the gist of the present invention. Make various modifications. These are all non-creative modifications, as long as they are all protected by the patent law within the scope of the claims of the present invention.

Claims

A safety syringe device, comprising a cylinder body (11), a needle installation tube (12), and an injection needle (13), characterized in that it also includes a ) on the rotation protection tube unit (1), set on the needle installation tube (12) and inserted into the rotation axis unit (2) of the rotation protection tube unit (1), set on the needle installation tube (12 ) and is used to engage the closed block unit (3) of the rotating protection tube unit (1), and is arranged on the needle installation tube (12) and is used to engage the rotating protection tube unit (1) The open state block unit (4).
A safety syringe device according to claim 1, characterized in that: the number of the rotating shaft units (2) is two, and the closed block unit (3) is located in the rotating protection tube unit (1) At the rear end position in the direction of rotation, the open block unit (4) is located at the front end position in the direction of rotation of the rotation protection tube unit (1).
A safety syringe device according to claim 2, characterized in that: the rotation protection tube unit (1) includes a tube body (101), which is arranged on the tube body (101) and used for outward rotation The needle opening (102) of the injection needle (13) is removed, set on the tube body (101) and located on both sides of the needle opening (102) and used for inserting and installing the rotating shaft unit (2 ) and two rotation holes (103) on the tube body (101) and the end groove for snapping into the needle installation tube (12) when the tube body (101) has been rotated open (104).
A safety syringe device according to claim 3, characterized in that: the rotation protection tube unit (1) further includes a block arranged on the needle port (102) and used to engage the closed state The card slot (105) of the unit (3).
A safety syringe device according to claim 3, characterized in that: the rotation protection tube unit (1) further includes a set in the end slot (104) and is used to limit and fix the open state The protruding plate (106) of the block unit (4).
A safety syringe device according to claim 4, characterized in that: the closed block unit (3) includes a needle mounted on the needle installation tube (12) and used for inserting into the card slot (105) ) of the radial engagement plate (301).
A safety syringe device according to claim 5, characterized in that: the block unit (4) in the open state includes a radially protruding plate (401) arranged on the needle installation tube (12) , and a snap-in plate (402) arranged on the side of the radially protruding plate (401) close to the barrel (11).
A safety syringe device according to claim 3, characterized in that: the rotating shaft unit (2) includes a needle mounted on the needle installation tube (12) and used to support the tube body (101) A base block (201), and a rotation shaft body (202) arranged on the base block (201) and used to be inserted into the rotation hole (103).
A safety syringe device according to claim 8, characterized in that: the rotation protection tube unit (1) further includes an engaging block (107) arranged in the rotation hole (103); the The rotating shaft unit (2) also includes a closed position positioning device which is arranged on the rotating shaft body (202) and engages and fixes the engaging block (107) respectively when the tube body (101) is closed and rotated to open. Slot (203), open position positioning slot (204).
A safety syringe device according to claim 9, characterized in that: the rotation protection tube unit (1) also includes a set on the tube body (101) and is used to give the locking block (107 ) provides a deformation opening (108) for retraction space.