CN212880476U

CN212880476U - Disposable double self-destruction syringe

Info

Publication number: CN212880476U
Application number: CN202020099535.XU
Authority: CN
Inventors: 杨小英; 莫海罡
Original assignee: Hunan Luzhou Huikang Development Co ltd
Current assignee: Hunan Luzhou Huikang Development Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2021-04-06
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a disposable dual self-destruction syringe, which comprises a double-cone connector, a cone, a core bar, a rubber plug and a syringe needle, wherein the self-destruction device comprises the double-cone connector, the cone and the core bar. The double-cone joint is arranged in the rubber plug, and a circular hole with the diameter is arranged in the center of the top of the rubber plug. When the medicine liquid is injected, the double-cone connector is inserted into the cone head of the barrel body and is matched with the reverse buckling device of the barrel body into a whole, so that the double-cone connector is connected with the barrel body into a whole, when the core rod is pulled back, the cone head of the double-cone connector is separated from the core rod and the rubber plug, a round hole in the top of the rubber plug is communicated with the opening of the core rod, the rubber plug loses a sealing function, the medicine liquid cannot be sucked, and meanwhile, the cone head of the double-cone connector is separated from the core rod, so that the reverse buckling rubber plug surface of the core rod is reduced, the rubber plug is peeled from.

Description

Disposable double self-destruction syringe

The technical field is as follows:

the utility model relates to a disposable medical appliance, in particular to a disposable double self-destruction syringe

Background art:

the most feared of the world's blood-borne diseases is AIDS. According to the research and statistics of WHO (world health organization), the number of AIDS patients in the world is over 3600 ten thousands, and the health of human beings in the world is seriously threatened.

The main transmission pathways of the hiv are five: the sexual transmission is the primary transmission path of the global epidemic of AIDS, and comprises sexual contact of genitals, anus and mouth, and the incidence rate is 70-80%; secondly, the medicine is spread among intravenous drug addicts, a common drug injection device is a stable and continuously increased risk factor, and the incidence rate is 3-10%; (iii) transmission through blood products, with the possibility of HIV infection using whole blood, red blood cells, freshly cryopreserved plasma and platelets supplied by a single donor, or blood products produced using blood banks, with an incidence of 3-5%; (iv) maternal-infant transmission, with about 30% of HIV-1 positive mothers causing neonatal infection with HIV-1; the infection probability of HIV is very low, and the risk of acupuncture infection is only 0.2%. Data from the American centers for disease control: CDC-Transmission Risk promulgates the single infection rate, 92.5% for transfusion, 0.63% for common needle, and only 0.04-0.08% for intercourse.

The data show that the way of repeatedly using the common injection appliance to treat the prostate disease and the top disease in the AIDS transmission way becomes an important work of human AIDS resistance.

In order to prevent the infection that the syringe arouses by used repeatedly, people's utility model a multiple self-destruction formula syringe, the patent is like the locking rubber stopper formula self-destruction syringe that CN 201510479370.2 disclosed, including overcoat, core bar and plug, be equipped with the conical head that passes through threaded connection with the syringe needle at the front end of overcoat, the characteristic is: the inner wall at the middle part of the conical head cavity of the conical head is provided with an elastic clamping ring with a clamping hole at the center, the front end of the rubber plug is assembled with the clamping seat, the rear end of the rubber plug is assembled with the core rod, the convex ring in front of the clamping seat passes through the clamping hole of the elastic clamping ring forward, and the elastic clamping ring can be clamped at the back-off step of the clamping seat to prevent the clamping seat from retreating backwards and returning to the outer sleeve. The elastic clamping ring consists of 3-12 single arc-shaped clamping pieces which are mutually separated and have the same shape. The elastic clamping ring plays a role of a one-way valve, only allows the clamping seat to be pushed forwards, and does not allow the clamping seat to be retracted backwards. However, this type of syringe has the following problems:

1. the injection medicine of hospital is generally quantitative, when adopting above-mentioned similar self-destruction syringe, when cassette and the contact of snap ring, the bottom of plug and the barrel of syringe still has a section space, the medicine in the syringe is not beaten completely, and will beat completely, need to promote the core bar hard, make the cassette overcome the resistance with snap ring, when beating the medicine, cassette and snap ring block the self-destruction, and when promoting the core bar hard, arouse vibrations very easily, lead to the syringe needle at the internal shake of patient, arouse patient's misery, and probably lead to great damage, and if reduce the resistance that forms when cassette and snap ring block, inevitably lead to the resistance greatly reduced after cassette and snap ring block, will hardly play the reuse prevention function.

2. Some self-destruction syringes, although when designing, have made the cassette and have great locking force after the elastic snap ring blocks, if pull out the core bar hard outward, often can also pull out the core bar, lead to it to be washed and utilize or played as the toy by children, cause the infection danger.

3. The existing self-destruction injector can pull the core rod outwards forcibly, and the core rod can be pulled out frequently, so that parts of each part are easily recycled by illegal vendors, and infection danger is easily caused.

4 the needle cylinder part of the prior disposable syringe still keeps complete, children pick up the needle cylinder part to manufacture a water-jetting toy in reality, and illegal vendors privately recycle and reuse the needle cylinder part. In order to prevent the above situation, it is necessary to prevent the syringe from being recovered without damage after one use.

The utility model has the following contents:

the utility model aims at providing a disposable double self-destruction syringe, which is used for peeling off the rubber plug of the syringe from the core rod after the injection of the liquid medicine is finished, so that the syringe can be used only once, thereby preventing the common use or the multiple use of the syringe, realizing the self-destruction after the disposable use.

The utility model discloses an adopt following technical scheme to realize its real novel purpose:

a disposable double self-destruction syringe comprises a syringe barrel, wherein a liquid outlet is fixed at the bottom of the syringe barrel, a core bar is inserted into the syringe barrel, the core bar is connected with a rubber plug structure, and the core bar is detachably connected with the top end of the rubber plug structure, and is characterized in that conical lock catches are formed at the bottom end of the rubber plug structure in the circumferential direction, and the number of the conical lock catches is more than or equal to 2; a hollow gap for separating the conical lock catch is formed in the middle of the bottom end of the rubber plug structure; an annular clamping protrusion matched with the conical lock catch is formed in the liquid outlet; the sum of the clamping force of the conical lock catch and the annular clamping protrusion is larger than the connecting force of the mounting block and the rubber plug outer sleeve;

the rubber plug structure comprises a rubber plug outer sleeve, a cavity is formed in the rubber plug outer sleeve, the top of the cavity is communicated with an upper through hole, and the bottom of the cavity is communicated with a lower through hole; a conical mounting block is mounted in the cavity; the mounting block is connected with a conical lock catch penetrating through the lower through hole through a connecting rod; the upper through hole and the lower through hole are smaller than the cavity to form an upper clamping ring structure and a lower clamping ring structure respectively; a snap ring matched with the rubber plug jacket is arranged at the inlet of the syringe barrel.

In a further improvement, the tapered lock catch is formed with a lock maintaining mechanism.

In a further improvement, the locking maintaining mechanism is a connecting block which connects the tops of the tapered lock catches together.

In a further improvement, the locking maintaining mechanism comprises a clamping protrusion protruding from the lower side of the conical lock catch, and an annular clamping strip matched with the clamping protrusion is formed on the annular clamping protrusion in a protruding mode.

In a further improvement, a lower plug cone is convexly formed at the top of the rubber plug structure, and an opening in interference fit with the lower plug cone is formed on the core rod.

In a further improvement, the mounting block is connected with a lower plug cone; the bottom of the core rod is provided with clamping plates in a protruding mode in the circumferential direction, and openings matched with the lower plug cones are formed between the clamping plates.

In a further improvement, the top of the clamping plate is fixed with an elastic clamping block matched with the lower plug cone, and the outer end of the elastic clamping block is a conical end matched with the upper snap ring structure.

In a further improvement, the lower plug cone and the opening are both cone-shaped.

In a further improvement, the rubber plug outer sleeve is made of rubber; the mounting block, the conical lock catch and the lower plug cone are integrally made of elastic plastic.

The improved structure is characterized in that the number of the conical lock catches is two, and the two conical lock catches are arranged oppositely.

The utility model discloses a realize plug and the automatic function of peeling off of core bar, be equipped with opening and lower stopper awl and toper hasp, after the locking, when the toper hasp received the pulling force, lower stopper awl broke away from the opening part.

The utility model discloses a realize that the toper hasp receives the function of pulling force reaction force, it is protruding that the annular card is equipped with the inverted loudspeaker left-hand thread in cone bottom liquid outlet, toper hasp and the protruding looks knot that closely coincide of annular card.

The utility model discloses a realize that the syringe bears standard negative pressure function, the core bar front end be equipped with lower stopper awl complex opening, lower stopper awl card go into the opening after, the core bar becomes the left-hand thread face of a whole support plug with lower stopper toper, has increased negative pressure bearing capacity, makes it accord with the standard requirement.

Since the technical scheme is used, the utility model discloses better realization its purpose of using neotype, this disposable double self-destruction formula syringe has taken plug and core bar peel off formula self-destruction, utilizes the plug awl to coincide with the core bar opening, increases core bar and plug left-hand thread face, makes it can bear standard negative pressure test and can easily peel off again, realizes the self-destruction function, has effectively pinched off the propagation way of blood nature disease cause sharing injection utensil or used repeatedly injection utensil.

Description of the drawings:

fig. 1 is a schematic structural diagram of a rubber plug structure.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic structural view of the core rod.

Fig. 4 is a schematic structural view of the mounting block.

Figure 5 is a cross-sectional schematic view of the plug housing.

Fig. 6 is a schematic structural view of the lock maintaining mechanism of embodiment 2.

The specific implementation mode is as follows:

the following description of the present invention will be made with reference to the accompanying drawings:

the disposable double self-destruction syringe shown in fig. 1-5 comprises a syringe barrel 2, a liquid outlet 5 is fixed at the bottom of the syringe barrel 2, a core bar 3 is inserted into the syringe barrel 2, the core bar 3 is connected with a rubber plug structure 4, the core bar 3 is detachably connected with the top end of the rubber plug structure 4, and the disposable double self-destruction syringe is characterized in that tapered lock catches 1 are formed at the bottom end of the rubber plug structure 4 in the circumferential direction, and the number of the tapered lock catches 1 is more than or equal to 2; a hollow gap 1-1 for separating the conical lock catch 1 is formed in the middle of the bottom end of the rubber plug structure 4; an annular clamping bulge 2-1 matched with the conical lock catch 1 is formed in the liquid outlet 5; the sum of the clamping force of the conical lock catch 1 and the annular clamping protrusion 2-1 is larger than the connecting force of the mounting block 4-5 and the rubber plug outer sleeve 4-1;

the rubber plug structure 4 comprises a rubber plug outer sleeve 4-1, a cavity 4-2 is formed inside the rubber plug outer sleeve 4-1, the top of the cavity 4-2 is communicated with an upper through hole 4-3, and the bottom of the cavity is communicated with a lower through hole 4-4; a conical mounting block 4-5 is arranged in the cavity 4-2; the mounting block 4-5 is connected with a conical lock catch 1 which penetrates through the lower through hole 4-4 through a connecting rod 4-6; the upper through hole 4-3 and the lower through hole 4-4 are both smaller than the cavity 4-2 to form an upper snap ring structure 4-7 and a lower snap ring structure 4-8 respectively; a snap ring 2-2 matched with the rubber plug jacket 4-1 is arranged at the inlet of the syringe barrel 2.

The tapered lock catch 1 is formed with a lock maintaining mechanism.

The locking maintaining mechanism is a connecting block 4-9 which connects the tops of the tapered lock catches 1 together.

The top of the rubber plug structure 4 is convexly provided with a lower plug cone 1-2, and the core rod 3 is provided with an opening 3-1 which is in interference fit with the lower plug cone 1-2.

The mounting block 4-5 is connected with a lower plug cone 1-2; the bottom of the core rod 3 is provided with clamping plates 3-2 in a protruding way in the circumferential direction, and an opening 3-1 matched with the lower plug cone 1-2 is formed between the clamping plates 3-2.

An elastic clamping block 3-3 matched with the lower plug cone 1-2 is fixed at the top of the clamping plate 3-2, and a conical end part 3-4 matched with an upper snap ring structure 4-7 is arranged at the outer end of the elastic clamping block 3-3.

The lower plug cone 1-2 and the opening 3-1 are both conical.

The rubber plug jacket 4-1 is made of rubber; the mounting block 4-5, the conical lock catch 1 and the lower plug cone 1-2 are integrally made of elastic plastics.

The number of the conical lock catches 1 is two, and the two conical lock catches 1 are arranged oppositely.

When the utility model is used, the clamp plate 3-2 structure of the core bar 3 and the lower plug cone 1-2 of the rubber plug structure 4 are clamped tightly, and the upper snap ring structure 4-7 is clamped by the elastic clamping block 3-3, so that the core bar 3 can pull the rubber plug structure 4 to move to form negative pressure when the liquid medicine is sucked. When the liquid medicine is injected, the liquid medicine is injected to the bottom, and due to the existence of the hollow gap 1-1, the conical lock catch 1 is easy to bend inwards when being subjected to the resistance of the annular clamping protrusion 2-1, so that the resistance of pushing the conical lock catch 1 into the liquid outlet is greatly reduced, the vibration generated by locking the conical lock catch 1 and the annular clamping protrusion 2-1 when the final liquid medicine is injected is reduced, and the pain of a patient caused by excessive vibration is prevented. After the liquid medicine is completely pumped, after the conical lock catch 1 and the annular clamping protrusion 2-1 are locked, when the core rod is pulled backwards, as the sum of the clamping force of the conical lock catch 1 and the annular clamping protrusion 2-1 is larger than the connecting force of the mounting block 4-5 and the rubber plug outer sleeve 4-1, the mounting block 4-5 is pulled out, the rubber plug outer sleeve 4-1 is peeled off, the rubber plug structure loses the sealing property and is scrapped, the core rod is pulled outwards continuously, the rubber plug outer sleeve 4-1 is blocked by the snap ring 2-2 and is left in the syringe barrel 2, so that the core rod and the syringe barrel 2 are scrapped, and double self-destruction is realized.

Example 2

As shown in fig. 6, the lock maintaining mechanism is modified as follows based on embodiment 1: comprises a convex clamping bulge 4-10 at the lower side of the conical lock catch 1, and an annular clamping strip 4-11 matched with the convex clamping bulge 4-10 is formed on the annular clamping bulge 2-1 in a convex way.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, as those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments and variations of the present invention without departing from the scope and spirit of the appended claims.

Claims

1. A disposable double self-destruction syringe comprises a syringe barrel (2), a liquid outlet (5) is fixed at the bottom of the syringe barrel (2), a core rod (3) is inserted into the syringe barrel (2), the core rod (3) is connected with a rubber plug structure (4), the core rod (3) is detachably connected with the top end of the rubber plug structure (4), and the disposable double self-destruction syringe is characterized in that conical lock catches (1) are formed at the bottom end of the rubber plug structure (4) in the circumferential direction, and the number of the conical lock catches (1) is more than or equal to 2; a hollow gap (1-1) for separating the conical lock catch (1) is formed in the middle of the bottom end of the rubber plug structure (4); an annular clamping bulge (2-1) matched with the conical lock catch (1) is formed in the liquid outlet (5);

the rubber plug structure (4) comprises a rubber plug outer sleeve (4-1), a cavity (4-2) is formed inside the rubber plug outer sleeve (4-1), the top of the cavity (4-2) is communicated with an upper through hole (4-3), and the bottom of the cavity is communicated with a lower through hole (4-4); a conical mounting block (4-5) is mounted in the cavity (4-2); the mounting block (4-5) is connected with a conical lock catch (1) which penetrates through the lower through hole (4-4) through a connecting rod (4-6); the upper through hole (4-3) and the lower through hole (4-4) are smaller than the cavity (4-2) to form an upper snap ring structure (4-7) and a lower snap ring structure (4-8) respectively; a snap ring (2-2) matched with the rubber plug jacket (4-1) is arranged at the inlet of the syringe barrel (2); the sum of the clamping force of the conical lock catch (1) and the annular clamping protrusion (2-1) is greater than the connecting force of the mounting block (4-5) and the rubber plug outer sleeve (4-1).

2. The single use dual self-destruct syringe according to claim 1, wherein said tapered locking buckle (1) is formed with a locking maintaining mechanism.

3. A single use dual self-destruct syringe according to claim 2, wherein said locking maintaining means is a connecting block (4-9) connecting the tops of the conical catches (1) together.

4. The disposable double self-destruct syringe according to claim 2, characterized in that said locking and maintaining means comprises a protruding snap (4-10) on the underside of the conical latch (1), and an annular snap strip (4-11) cooperating with the snap (4-10) is formed protruding on the annular snap (2-1).

5. The disposable double self-destruction syringe as claimed in any one of claims 1 to 4, wherein the top of the rubber plug structure (4) is protruded to form a lower plug cone (1-2), and the core rod (3) is formed with an opening (3-1) which is in interference fit with the lower plug cone (1-2).

6. The disposable dual self-destructing syringe according to claim 1, wherein the mounting block (4-5) is connected to a lower tap (1-2); clamping plates (3-2) are formed at the bottom of the core rod (3) in a protruding mode in the circumferential direction, and openings (3-1) matched with the lower plug cones (1-2) are formed between the clamping plates (3-2).

7. The disposable double self-destruction syringe as recited in claim 6, wherein the top of the splint (3-2) is fixed with an elastic clamping block (3-3) matching with the lower cork cone (1-2), and the outer end of the elastic clamping block (3-3) is a cone-shaped end (3-4) matching with the upper snap ring structure (4-7).

8. A single use dual self-destructing syringe according to claim 5 wherein the lower bung cone (1-2) and the opening (3-1) are both cone-shaped.

9. The disposable dual self-destructing syringe according to claim 1, wherein the rubber plug sheath (4-1) is made of rubber; the mounting block (4-5), the conical lock catch (1) and the lower plug cone (1-2) are integrally made of elastic plastic.

10. The disposable double self-destruction syringe according to claim 1, wherein the number of the tapered lock (1) is two, and the two tapered locks (1) are disposed opposite to each other.