CN112076088A

CN112076088A - Medical intravenous injection syringe

Info

Publication number: CN112076088A
Application number: CN202010999078.4A
Authority: CN
Inventors: 邢义军
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2020-12-15

Abstract

The invention provides a medical intravenous injection syringe. The invention comprises a cylinder body and a push rod, wherein the end part of the push rod is provided with a soft plug body, one end of the cylinder body is provided with a needle head, the other end of the cylinder body is provided with a cylinder opening, the soft plug body is arranged into the cylinder body from the cylinder opening, the push rod is provided with a positioning ring, at least two positioning blocks are arranged in the positioning ring in a sliding manner, a moving channel is arranged in the push rod, and the positioning blocks are provided with; the driving groove is arranged in the push rod, one end of the driving groove is communicated with the end part of the push rod, which deviates from the soft plug body, the other end of the driving groove is communicated with the sliding channel, a driving rod is connected in the driving groove in a sliding manner, a second inclined plane is arranged at the end part of the driving rod, and the driving rod can be extruded to the inner cylinder wall of the cylinder body by the driving rod. The syringe of above-mentioned structure, even the accident appears exerting thrust effect to the push rod, whole push rod also can be fixed in the barrel, reduces by a wide margin because of produce unexpected extrusion to the push rod, the liquid medicine in the syringe just can spout, extract the unable condition emergence up to standard of liquid medicine volume, pollution operation panel.

Description

Medical intravenous injection syringe

Technical Field

The invention relates to a medical injection syringe, in particular to a medical intravenous injection syringe.

Background

The structure of the prior syringe mainly comprises a cylinder body, wherein a push rod is arranged in the cylinder body, and a soft plug body is arranged at the end part of the push rod; through pulling the push rod, the push rod drives the soft plug body to slide back and forth along the inside of the barrel body in a reciprocating manner, and the injection in the barrel body can be sprayed out from the needle head arranged at the end part of the barrel body.

When using above-mentioned syringe to join in marriage liquid, can involve a single syringe and cooperate a plurality of liquid medicine bottles usually, then inject the liquid medicine in a plurality of liquid medicine bottles in same transfusion bottle, in the liquid medicine in the extraction a plurality of liquid medicine bottles in-process, usually earlier with the liquid medicine suction in one of them liquid medicine bottle to the syringe, then carry out the drawing to another liquid medicine bottle again, at this in-process, in case the maloperation of operating personnel, produce unexpected extrusion to the push rod, the liquid medicine in this syringe just can spout, not only this time the drawing liquid medicine volume can't reach standard, and can pollute the operation panel.

Disclosure of Invention

In view of this, the present invention provides a medical intravenous injection syringe, which can timely limit the position of a push rod, improve the convenience of use, and reduce the probability of pollution of an operation console.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a medical care intravenous injection syringe comprises a syringe body and a push rod, wherein the end part of the push rod is provided with a soft plug body, one end of the syringe body is provided with a needle head, the other end of the syringe body is provided with a syringe opening, the soft plug body is arranged in the syringe body from the syringe opening,

the push rod is provided with a positioning ring, the positioning ring can move into the barrel body, at least two positioning blocks are arranged in the positioning ring in a sliding mode, sliding channels which correspond to the positioning blocks one by one and are used for the positioning blocks to slide in are arranged in the push rod, and a first inclined plane is arranged at the end, close to the push rod, of each positioning block;

the inner wall of the barrel is provided with a first inclined plane matched with the inner wall of the barrel, the end part of the first inclined plane is provided with a second inclined plane matched with the first inclined plane, and the driving rod can extrude the driving rod to the inner wall of the barrel.

Through the technical scheme, after having taken out first kind of liquid medicine in the barrel, need place this cylinder temporarily, at this moment, need keep the push rod position motionless, to promoting the actuating lever in the barrel, second inclined plane on the actuating lever can produce the extrusion with the first inclined plane of locating piece, the locating piece alright remove to the holding ring outside along the passageway that slides, the tip that the locating piece deviates from first inclined plane can offset with the inner tube wall of barrel, and then directly produce limiting displacement to the push rod, even the accident exerts the thrust effect to the push rod, whole push rod also can be fixed in the barrel, reduce by a wide margin because of producing unexpected extrusion to the push rod, liquid medicine in the injection cylinder just can spout, the unable standard of extraction liquid medicine volume, the condition of pollution operation panel takes place.

Preferably, the end of the driving rod, which is away from the first inclined plane, is provided with a rubber layer.

Through above-mentioned technical scheme, the rubber layer of actuating lever tip can produce the extrusion with the inner tube wall of barrel, and the rubber layer texture is softer, can not only promote the extrusion fixed stability between actuating lever and the barrel, can reduce the produced damage of barrel inner tube wall in addition by a wide margin.

Preferably, a tension spring is arranged in each sliding channel and used for pulling the positioning block into the positioning ring.

Through above-mentioned technical scheme, when needs promote the push rod, with the actuating lever pulling of barrel one side dorsad, inside tension spring alright automatic pull-in locating piece to the holding ring, the tip alright and the inner tube wall of barrel take place to break away from, the push rod alright carry out free activity.

Preferably, be provided with at least two external screw thread sections that are interval distribution along the length direction of push rod, all be equipped with on every external screw thread section the passageway that slides, holding ring threaded connection is on the external screw thread section.

Through above-mentioned technical scheme, the accessible rotates the holding ring, and the holding ring is optionally carried out screw-thread fit with the external screw thread section of difference to the realization is fixed in the different positions of push rod, adjusts the relative position of location between push rod and the barrel more nimble.

Preferably, the barrel further comprises a sliding sleeve and a corrugated pipe sleeve, wherein a sliding hole is formed in the end part of the barrel in a penetrating manner, the sliding sleeve is arranged in the sliding hole in a sliding manner, the two ends of the sliding sleeve are respectively an inner end and an outer end, the inner end extends into the barrel and can be abutted against the inner barrel wall of the barrel to limit the sliding sleeve to slide out of the barrel from the sliding hole, the outer end extends out of the barrel, the corrugated pipe sleeve is sleeved outside the sliding sleeve, and the two ends of the corrugated pipe sleeve are respectively connected to the inner end and the inner barrel wall of the barrel;

the outer sleeve wall of the sliding sleeve is provided with a jack;

the barrel is provided with a driving positioning part, the driving positioning part comprises a driving positioning rod and a driving positioning part, the barrel is provided with a driving positioning sliding groove, the driving positioning rod is connected in the driving positioning sliding groove in a sliding mode, the width of the driving positioning sliding groove is larger than that of the driving positioning rod, the sliding direction of the driving positioning rod is consistent with the length direction of the barrel, one end of the driving positioning rod is used for being inserted into or pulled out of the insertion hole, the other end of the driving positioning rod is a bending end, the bending end faces the inside of the barrel, the driving positioning part is used for pushing the bending end of the driving rod to protrude out of the inner barrel wall of the barrel, and the driving positioning part.

Through the technical scheme, when the syringe is not used, the sliding sleeve can enter the syringe body along the sliding hole, and the needle head can also enter the sliding hole along with the sliding sleeve, so that the length of the whole injection syringe is greatly shortened, and the storage convenience is high;

when the injection syringe is needed to be used, the push rod can be pushed, the rubber plug at the end part of the push rod pushes the inner end, the needle head and the sliding sleeve can slide towards the outside of the syringe body along the sliding hole, when the insertion hole is positioned at the outside of the syringe body, the end part of the driving positioning rod is inserted into the insertion hole, then the driving positioning part is utilized to push the bending end of the driving rod to protrude out of the inner cylinder wall of the syringe body, the driving rod is pushed towards the inside of the syringe body, the second inclined surface on the driving rod can extrude with the first inclined surface of the positioning block, the positioning block can move towards the outside of the positioning ring along the sliding channel, but at the moment, a certain gap can still be kept between the positioning block and the inner cylinder wall of the syringe body, then when the push rod is pushed, the positioning block can generate extrusion force towards one side of the needle head towards the bending end, then the driving positioning piece is utilized to position the driving positioning rod on the appointed position, and the normal use can be realized.

Preferably, be equipped with drive positioning spring in the drive positioning spout, drive positioning spring is used for driving drive positioning rod and removes and make the end of buckling move to in the drive positioning spout toward deviating from push rod one side.

Through above-mentioned technical scheme, after drive setting element cancellation positioning action, drive location spring can drive the locating lever and move toward deviating from push rod one side, and the end of buckling also can move to drive in the location spout, just can not influence the upper and lower twitching of whole push rod.

Preferably, the end part of the driving positioning rod close to the needle head is a driving section, the driving section is bent, and the driving section can be attached to the end surface of the barrel close to the needle head and close to the end surface.

Through above-mentioned technical scheme, when drive locating lever tip alright follow the jack in take out the back, drive locating lever can tightly laminate in the barrel terminal surface near the syringe needle to in accomodate.

Preferably, the driving positioning part comprises a driving positioning bolt, the driving positioning bolt is in threaded connection with the barrel and penetrates into the driving positioning chute, and the end part of the driving positioning bolt abuts against the driving positioning rod and can push the driving positioning rod to move towards one side close to the push rod.

Through above-mentioned technical scheme, accessible rotary drive positioning bolt, drive positioning bolt can produce the extrusion force toward being close to push rod one side to the drive locating lever, and then promote the push rod and move toward being close to push rod one side.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

FIG. 4 is an enlarged view of section C of FIG. 1;

FIG. 5 is a diagram illustrating the positioning block slidably protruding from the positioning ring according to the embodiment.

Reference numerals: 1. a barrel; 2. a push rod; 3. a slipping channel; 4. a drive slot; 5. a soft plug body; 6. a needle head; 7. a cylinder mouth; 8. a positioning ring; 9. positioning blocks; 10. a first inclined plane; 11. a drive rod; 12. a second inclined plane; 13. a rubber layer; 14. a tension spring; 15. an external threaded section; 16. a sliding sleeve; 161. an inner end; 162. an outer end; 17. a jack; 18. a bellows sleeve; 19. a sliding hole; 20. driving the positioning part; 201. driving the positioning rod; 2011. a drive section; 2012. bending the end; 21. driving the positioning piece; 22. driving the positioning chute; 23. a drive positioning spring; 24. and driving the positioning bolt.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings 1-5 to make the technical solution of the present invention easier to understand and grasp.

The utility model provides a medical care intravenous injection syringe, includes barrel 1, the push rod 2 that the tip installed soft cock body 5, and syringe needle 6 is installed to the one end of barrel 1, and nozzle 7 has been seted up to the other end of barrel 1, and soft cock body 5 is installed into in the barrel 1 from nozzle 7.

At least two external thread sections 15 are arranged at intervals along the length direction of the push rod 2.

A positioning ring 8 is arranged on the outer side wall of the push rod 2, and the positioning ring 8 can be in threaded connection with an external thread section 15. The positioning ring 8 can move into the barrel body 1, at least two positioning blocks 9 are arranged in the positioning ring 8 in a sliding mode, a sliding channel 3 which corresponds to the positioning blocks 9 one to one and allows the positioning blocks 9 to slide into is arranged in each external thread section 15, a first inclined surface 10 is arranged at the end portion, close to the push rod 2, of each positioning block 9, the first inclined surface 10 faces the side, away from the needle head 6, and the sliding direction of each positioning block 9 is perpendicular to the center of the positioning ring 8.

Be equipped with drive groove 4 in the push rod 2, the tip that 4 one end in drive groove and push rod 2 deviate from soft cock body 5 communicates with each other, and the drive groove 4 other end communicates with each other with the passageway 3 that slides, and the inslot that drives slides and is connected with actuating lever 11, and actuating lever 11 tip is equipped with the second inclined plane 12 with first inclined plane 10 matched with, and the quantity of second inclined plane 12 is unanimous with the quantity of first inclined plane 10, and actuating lever 11 can extrude actuating lever 11 to the inner tube wall of barrel 1.

The end of the driving rod 11 departing from the first inclined plane 10 is provided with a rubber layer 13, and the rubber layer 13 can be pressed between the end of the driving rod 11 and the inner wall of the cylinder 1.

A tension spring 14 is arranged in each sliding channel 3, and the tension spring 14 is used for pulling the positioning block 9 into the positioning ring 8.

On the basis of the structure, the barrel structure further comprises a sliding sleeve 16 and a corrugated pipe sleeve 18, a sliding hole 19 is formed in the end portion of the barrel body 1 in a penetrating mode, the sliding sleeve 16 is arranged in the sliding hole 19 in a sliding mode, the inner end 161 and the outer end 162 are arranged at two ends of the sliding sleeve 16 respectively, the inner end 161 extends into the barrel body 1, the inner end 161 can abut against the inner barrel wall of the barrel body 1 to limit the sliding sleeve 16 to slide out of the barrel body 1 from the sliding hole 19, the outer end 162 extends out of the barrel body 1, the corrugated pipe sleeve 18 is sleeved on the outer side of the sliding sleeve 16, and two ends of the corrugated pipe sleeve 18 are connected to the.

The outer wall of the sliding sleeve 16 is provided with a jack 17.

Be equipped with drive location portion 20 on barrel 1, drive location portion 20 includes drive locating lever 201, drive setting element 21, be equipped with drive location spout 22 on barrel 1, drive locating lever 201 slides and connects in drive location spout 22, the width of drive location spout 22 is greater than the width of drive locating lever 201, the direction of sliding of drive locating lever 201 is unanimous with the length direction of barrel 1, drive locating lever 201 one end tip is used for inserting or extracting in jack 17, the other end of drive locating lever 201 is end 2012 of buckling, end 2012 buckles towards inside barrel 1, drive setting element 21 is used for promoting end 2012 of buckling of actuating lever 11 and stands out in barrel 1 inner wall, and drive setting element 21 can be fixed a position drive locating lever 201 in assigned position.

Wherein, be equipped with drive positioning spring 23 in drive positioning spout 22, drive positioning spring 23 is used for driving drive positioning rod 201 and to keeping away from push rod 2 one side and remove and make bending end 2012 move to in drive positioning spout 22.

In addition, the end part of the driving positioning rod 201 close to the needle 6 is a driving section 2011, the driving section 2011 is bent, and the driving section 2011 can be attached to the end surface of the barrel 1 close to the needle 6 and close to the end surface.

The actual use process is as follows:

(1) and (4) a normal use state.

The push rod 2 with the soft plug body 5 is inserted into the cylinder body 1, when the relative position of the push rod 2 and the cylinder body 1 is fixed, the drive rod 11 is pushed, the second inclined plane 12 of the drive rod 11 is abutted against the first inclined plane 10 of the positioning block 9, the positioning block 9 overcomes the elasticity of the tension spring 14, the positioning block 9 moves towards the outside of the positioning ring 8, but a certain gap is kept between the rubber layer 13 at the end part of the positioning block 9 and the inner cylinder wall of the cylinder body 1 at the moment, so that the whole push rod 2 can smoothly slide along the cylinder body 1;

the soft plug body 5 can extrude the sliding sleeve 16, the outer end 162 of the sliding sleeve 16 can move towards the outer side of the barrel opening 7, the driving positioning bolt 24 rotates inwards, the elastic action of the driving positioning spring 23 is overcome, the driving positioning bolt 24 can push the driving positioning rod 201 towards the inner side of the barrel body 1, the bending end 2012 can move to the inner side of the barrel body 1, at the moment, the other end of the driving positioning rod 201 can also be inserted into the jack 17, then the push rod 2 is pushed, the positioning block 9 on the push rod 2 can extrude the bending end 2012, the whole driving positioning rod 201 moves along the barrel body 1, and the outer end 162 of the sliding sleeve 16 can be driven to continuously move out of the barrel body 1;

when the sliding sleeve 16 moves to a desired length, the driving positioning bolt 24 is screwed, the driving positioning bolt 24 can position the driving positioning rod 201 at a specified position, and the whole sliding sleeve 16 is fixed.

(2) When the relative position of the push rod 2 and the cylinder 1 needs to be fixed, the drive rod 11 is pushed, the second inclined surface 12 of the drive rod 11 abuts against the first inclined surface 10 of the positioning block 9, the positioning block 9 overcomes the elastic force of the tension spring 14, the positioning block 9 moves towards the outside of the positioning ring 8, the rubber layer 13 at the end part of the positioning block 9 abuts against the inner cylinder wall of the cylinder 1, and the push rod 2 and the cylinder 1 can be relatively fixed.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides a medical care intravenous injection syringe, includes that push rod (2) of soft cock body (5) are installed to barrel (1), tip, syringe needle (6) are installed to the one end of barrel (1), nozzle (7) have been seted up to the other end of barrel (1), soft cock body (5) are installed into in barrel (1) from nozzle (7), characterized by:

the push rod (2) is provided with a positioning ring (8), the positioning ring (8) can move into the barrel body (1), at least two positioning blocks (9) are arranged in the positioning ring (8) in a sliding mode, sliding channels (3) which correspond to the positioning blocks (9) one by one and are used for the positioning blocks (9) to slide in are arranged in the push rod (2), and a first inclined surface (10) is arranged at the end part, close to the push rod (2), of each positioning block (9);

be equipped with drive groove (4) in push rod (2), drive groove (4) one end communicates with each other with the tip that push rod (2) deviate from soft cock body (5), the drive groove (4) other end communicates with each other with passageway (3) that slides, it is connected with actuating lever (11) to slide in drive groove (4), actuating lever (11) tip is equipped with second inclined plane (12) with first inclined plane (10) matched with, actuating lever (11) can extrude actuating lever (11) to the inner tube wall of barrel (1).

2. The medical care intravenous injection syringe of claim 1, wherein: the end part of the driving rod (11) departing from the first inclined plane (10) is provided with a rubber layer (13).

3. The medical care intravenous injection syringe of claim 1, wherein: each sliding channel (3) is internally provided with a tension spring (14), and the tension springs (14) are used for pulling the positioning blocks (9) into the positioning rings (8).

4. The medical care intravenous injection syringe of claim 1, wherein: at least two external thread sections (15) distributed at intervals are arranged in the length direction of the push rod (2), the sliding channel (3) is arranged in each external thread section (15), and the positioning ring (8) is in threaded connection with the external thread sections (15).

5. A medical care intravenous fluid injection syringe according to any one of claims 1 to 4, further comprising: the anti-slipping structure is characterized by further comprising a slipping sleeve (16) and a corrugated pipe sleeve (18), a slipping hole (19) is formed in the end portion of the barrel body (1) in a penetrating mode, the slipping sleeve (16) is arranged in the slipping hole (19) in a slipping mode, the inner end (161) and the outer end (162) are arranged at the two ends of the slipping sleeve (16) respectively, the inner end (161) extends into the barrel body (1), the inner end (161) can abut against the inner barrel wall of the barrel body (1) to limit the slipping sleeve (16) to slip out of the barrel body (1) from the slipping hole (19), the outer end (162) extends out of the barrel body (1), the corrugated pipe sleeve (18) is sleeved on the outer side of the slipping sleeve (16), and the two ends of the corrugated pipe sleeve (18) are connected to the inner end (161) and the;

the outer sleeve wall of the sliding sleeve (16) is provided with a jack (17);

the barrel (1) is provided with a driving positioning part (20), the driving positioning part (20) comprises a driving positioning rod (201) and a driving positioning part (21), the barrel (1) is provided with a driving positioning sliding groove (22), the driving positioning rod (201) is connected in the driving positioning sliding groove (22) in a sliding manner, the width of the driving positioning sliding groove (22) is larger than that of the driving positioning rod (201), the sliding direction of the driving positioning rod (201) is consistent with the length direction of the barrel (1), one end part of the driving positioning rod (201) is used for being inserted into or pulled out of the jack (17), the other end of the driving positioning rod (201) is a bent end (2012), the bent end (2012) faces the inside of the barrel (1), and the driving positioning part (21) is used for pushing the bent end (2012) of the driving rod (11) to protrude out of the inner barrel wall, and the driving positioning piece (21) can position the driving positioning rod (201) at a specified position.

6. The medical care intravenous injection syringe of claim 5, wherein: be equipped with drive positioning spring (23) in drive positioning spout (22), drive positioning spring (23) are used for driving drive positioning pole (201) and toward deviating from push rod (2) one side and remove and make end (2012) of buckling move to in drive positioning spout (22).

7. The medical care intravenous injection syringe of claim 5, wherein: drive locating lever (201) are close to the tip in syringe needle (6) and are drive section (2011), drive section (2011) are the form of buckling, drive section (2011) can with barrel (1) is close to the terminal surface laminating of syringe needle (6) mutually and is close to.

8. The medical care intravenous injection syringe of claim 5, wherein: the driving positioning piece (21) comprises a driving positioning bolt (24), the driving positioning bolt (24) is in threaded connection with the barrel (1) and penetrates into the driving positioning sliding groove (22), and the end part of the driving positioning bolt (24) abuts against the driving positioning rod (201) and can push the driving positioning rod (201) to move towards one side close to the push rod (2).