CN111905198A

CN111905198A - Medical intravenous injection syringe

Info

Publication number: CN111905198A
Application number: CN202010999080.1A
Authority: CN
Inventors: 鲍雪花
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2020-11-10

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 outer side wall of the push rod is provided with a sliding channel, the push rod is internally provided with a driving groove, one end of the driving groove is communicated with the end part of the push rod, which is deviated from the soft plug body, the other end of the driving groove is communicated with the sliding channel, the driving groove is internally provided with a driving rod and a driving sheet, the driving sheet is positioned at one side of the driving rod; an elastic supporting sheet is arranged in the driving groove, and two ends of the elastic supporting sheet are respectively an extrusion end and a contact end. It can carry out in good time limiting displacement to the push rod, promotes the convenient degree of use, reduces the contaminated probability of operation panel.

Description

Medical intravenous injection syringe

Technical Field

The invention relates to a hospital injection tool, 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 intravenous injection syringe comprises a barrel body and a push rod, wherein the end part of the push rod is provided with a soft plug body, one end of the barrel body is provided with a needle head, the other end of the barrel body is provided with a barrel opening, the soft plug body is arranged in the barrel body from the barrel opening,

the outer side wall of the push rod is provided with a sliding channel, a 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 is far away from the soft plug body, the other end of the driving groove is communicated with the sliding channel, a driving rod and a driving sheet are arranged in the driving groove, the driving sheet is positioned on one side, which is far away from the soft plug body, of the driving rod, the driving sheet is rotatably connected to the driving groove, the driving rod is in threaded connection with the wall of the driving groove, and a tension spring is;

an elastic supporting sheet is arranged in the driving groove, an extrusion end and a contact end are respectively arranged at two ends of the elastic supporting sheet, the end part of the driving rod, which deviates from the driving sheet, abuts against the extrusion end, and the elastic supporting sheet can extend out of the sliding channel and abut against the inner cylinder wall of the cylinder body.

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, the rotatory driving plate of circumference, the driving plate drives the actuating lever through tension spring and rotates, the actuating lever rotates and removes toward soft stopper body one side along the screw thread in the driving groove, the tip of actuating lever can extrude the extrusion end of elastic support piece, the elastic support piece can extend the passageway that slides and it is spacing with barrel inner tube wall counterbalance, even exert thrust action to the push rod by accident, 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 extraction liquid medicine volume can't reach standard, the condition of pollution operation panel takes place.

Preferably, the quantity of the passageway that slides is two, the passageway symmetric distribution that slides is in the peripheral position of push rod, the extrusion end of elastic support piece is located the middle part, the conflict end is provided with two, two conflict end extends into the passageway that slides respectively.

Through above-mentioned technical scheme, when the push rod extrudees the extrusion end of elastic support piece, two conflict ends of elastic support piece can be simultaneously from the passageway cunning that slides that corresponds and shift out, then two conflict ends respectively with the barrel inner tube wall offset spacing, conflict power is stronger, the spacing ability of push rod is better.

Preferably, the side wall of the driving groove close to the soft plug body is provided with a pointed bulge, the pointed bulge is opposite to the extrusion end, and the contact ends are respectively positioned at the left side and the right side of the pointed bulge.

Through above-mentioned technical scheme, the protruding both sides of point can extrude the end more smoothly to the passageway that slides, and the deformation of elastic support piece is more regular, can further promote the spacing effect to the push rod.

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 sheet is rotated in the circumferential direction, the driving sheet drives the driving rod to rotate through the tension spring, the driving rod rotates along the thread in the driving groove and moves towards one side of the soft plug body, the end part of the driving rod can extrude the extrusion end of the elastic support sheet, the elastic support sheet can extend out of a sliding channel, at the moment, a certain gap can be kept between the end part of the elastic support sheet and the inner cylinder wall of the syringe, and then make the drive locating lever move along the slip cover direction, the drive locating lever alright continue to take out syringe needle and slip cover to the barrel outside, reuse the drive setting element with drive locating lever location on appointed position, alright normal use.

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 a state where the abutting end of the elastic supporting piece is slidably protruded from the outer wall of the shaft of the push rod in the embodiment.

Reference numerals: 1. a barrel; 2. a cylinder mouth; 3. a soft plug body; 4. a push rod; 5. a needle head; 6. a slipping channel; 7. a drive slot; 8. a drive rod; 9. a driving plate; 10. a tension spring; 11. an elastic support sheet; 111. extruding the end; 112. a contact end; 12. pointed bulges are formed; 13. a sliding sleeve; 131. an inner end; 132. an outer end; 14. a bellows sleeve; 15. a jack; 16. driving the positioning part; 161. driving the positioning rod; 1611. a drive section; 1612. bending the end; 17. driving the positioning piece; 171. driving the positioning bolt; 18. driving the positioning chute; 19. a drive positioning spring; 20. and (6) sliding holes.

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 blood vessel injection syringe, includes that barrel 1, tip install the push rod 4 of soft cock body 3, and syringe needle 5 is installed to the one end of barrel 1, and nozzle 2 has been seted up to the other end of barrel 1, and soft cock body 3 is installed into in the barrel 1 from nozzle 2.

The outer side wall of the push rod 4 is provided with two sliding channels 6, in this embodiment, the sliding channels 6 are symmetrically distributed at the peripheral position of the push rod 4.

A driving groove 7 is arranged in the push rod 4, the groove depth direction of the driving groove 7 is consistent with the length direction of the push rod 4, one end of the driving groove 7 is communicated with the end part of the push rod 4 departing from the soft plug body 3, and the other end of the driving groove 7 is communicated with the sliding channel 6.

Be equipped with actuating lever 8 and driver blade 9 in drive slot 7, driver blade 9 is located one side that actuating lever 8 deviates from soft cock body 3, and driver blade 9 rotates to be connected in

drive slot

7, and 8 threaded connection of actuating lever are connected with tension spring 10 in the 7 cell walls of drive slot between driver blade 9 and the actuating lever 8. It is of course advantageous to provide the driver blade 9 with a tab facing away from the tension spring 10 for the user to exert force.

An elastic support piece 11 is arranged in the driving groove 7, and an elastic plastic piece is preferably used as the elastic support piece 11. The two ends of the elastic support sheet 11 are respectively an extrusion end 111 and a contact end 112, the extrusion end 111 of the elastic support sheet 11 is located in the middle, the number of the contact ends 112 is two, and the two contact ends 112 respectively extend into the sliding channel 6. The end of the driving rod 8 departing from the driving sheet 9 is pressed against the extrusion end 111, and the elastic supporting sheet 11 can extend out of the sliding channel 6 to be pressed against the inner wall of the cylinder 1.

In addition, a sharp projection 12 is provided on the side wall of the driving groove 7 near the cork body 3, the sharp projection 12 is opposite to the pressing end 111, and the abutting ends 112 are respectively located on the left and right sides of the sharp projection 12.

On the basis of the structure, the barrel structure further comprises a sliding sleeve 13 and a corrugated pipe sleeve 14, a sliding hole 20 is formed in the end portion of the barrel body 1 in a penetrating mode, the sliding sleeve 13 is arranged in the sliding hole 20 in a sliding mode, the inner end 131 and the outer end 132 are arranged at the two ends of the sliding sleeve 13 respectively, the inner end 131 extends into the barrel body 1, the inner end 131 can abut against the inner barrel wall of the barrel body 1 to limit the sliding sleeve 13 to slide out of the barrel body 1 from the sliding hole 20, the outer end 132 extends out of the barrel body 1, the corrugated pipe sleeve 14 is sleeved on the outer side of the sliding sleeve 13, and the two ends of the corrugated pipe sleeve 14 are connected.

The outer wall of the sliding sleeve 13 is provided with a jack 15.

Be equipped with drive location portion 16 on barrel 1, drive location portion 16 includes drive locating lever 161, drive setting element 17, be equipped with drive location spout 18 on barrel 1, drive locating lever 161 slides and connects in drive location spout 18, the width of drive location spout 18 is greater than the width of drive locating lever 161, the direction of sliding of drive locating lever 161 is unanimous with the length direction of barrel 1, drive locating lever 161 one end tip is used for inserting or extracting in jack 15, the other end of drive locating lever 161 is buckling end 1612, buckling end 1612 is inside towards barrel 1, drive setting element 17 is used for promoting buckling end 1612 salient in barrel 1 inner wall of actuating lever 8, and drive setting element 17 can be fixed a position drive locating lever 161 in assigned position.

A driving positioning spring 19 is disposed in the driving positioning sliding groove 18, and the driving positioning spring 19 is used for driving the driving positioning rod 161 to move toward the side away from the push rod 4 and moving the bending end 1612 into the driving positioning sliding groove 18.

The end of the drive positioning rod 161 close to the needle 5 is a drive section 1611, the drive section 1611 is bent, and the drive section 1611 can be brought into close contact with the end face of the barrel 1 close to the needle 5.

The actual use process is as follows:

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

The push rod 4 with the soft plug body 3 is inserted into the cylinder body 1, when the relative position of the push rod 4 and the cylinder body 1 is fixed, the drive rod 8 is pushed, the drive sheet 9 is rotated in the circumferential direction, the drive sheet 9 drives the drive rod 8 to rotate through the tension spring 10, the drive rod 8 rotates along the thread in the drive groove 7 and moves towards one side of the soft plug body 3, the end part of the drive rod 8 can extrude the extrusion end 111 of the elastic support sheet 11, the elastic support sheet 11 can extend out of the sliding channel 6, but a certain gap is kept between the rubber layer at the end part of the positioning block and the inner cylinder wall of the cylinder body 1 at the moment, so that the whole push rod 4 can smoothly slide along the cylinder body 1;

the soft plug body 3 can extrude the sliding sleeve 13, the outer end 132 of the sliding sleeve 13 can move towards the outer side of the barrel opening 2, the driving positioning bolt 171 rotates inwards, the elastic action of the driving positioning spring 19 is overcome, the driving positioning bolt 171 can push the driving positioning rod 161 towards the inner side of the barrel body 1, the bending end 1612 can move into the barrel body 1, at the moment, the other end of the driving positioning rod 161 can also be inserted into the jack 15, then the push rod 4 is pushed, the abutting end 112 of the elastic supporting sheet 11 can extrude the bending end 1612, the whole driving positioning rod 161 moves along the barrel body 1, and the outer end 132 of the sliding sleeve 13 can be driven to continuously move out of the barrel body 1;

when the sliding sleeve 13 moves to a desired length, the driving positioning bolt 171 is screwed, the driving positioning bolt 171 can position the driving positioning rod 161 at a specified position, and the whole sliding sleeve 13 is fixed.

(2) When needing to fix the relative position of push rod 4 and barrel 1, the rotatory driving plate 9 of circumference, driving plate 9 drive actuating lever 8 through tension spring 10 and rotate, and actuating lever 8 rotates and removes toward soft plug body 3 one side along the screw thread in the drive groove 7, and the tip of actuating lever 8 slides along the protruding 12 both sides lateral wall of point, and elastic support piece 11 extensible play slide passageway 6 and with barrel 1 inner tube wall counterbalance spacing.

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 blood vessel injection syringe, includes that push rod (4) of soft cock body (3) are installed to barrel (1), tip, syringe needle (5) are installed to the one end of barrel (1), nozzle (2) have been seted up to the other end of barrel (1), soft cock body (3) are installed into in barrel (1) from nozzle (2), characterized by:

a sliding channel (6) is arranged on the outer side wall of the push rod (4), a driving groove (7) is arranged in the push rod (4), one end of the driving groove (7) is communicated with the end part of the push rod (4) departing from the soft plug body (3), the other end of the driving groove (7) is communicated with the sliding channel (6), a driving rod (8) and a driving sheet (9) are arranged in the driving groove (7), the driving sheet (9) is positioned on one side of the driving rod (8) departing from the soft plug body (3), the driving sheet (9) is rotatably connected to the driving groove (7), the driving rod (8) is in threaded connection with the groove wall of the driving groove (7), and a tension spring (10) is connected between the driving sheet (9) and the driving rod (8);

an elastic supporting sheet (11) is arranged in the driving groove (7), an extrusion end (111) and a contact end (112) are respectively arranged at two ends of the elastic supporting sheet (11), the end part of the driving rod (8) departing from the driving sheet (9) is pressed against the extrusion end (111), and the elastic supporting sheet (11) can extend out of the sliding channel (6) and is pressed against the inner cylinder wall of the cylinder body (1).

2. The medical intravenous injection syringe cylinder according to claim 1, which is characterized in that: the quantity of passageway (6) that slides is two, passageway (6) symmetric distribution slides in the peripheral position of push rod (4), extrusion end (111) of elastic support piece (11) are located the middle part, it is provided with two to touch end (112), two touch end (112) extend respectively into in the passageway (6) slides.

3. The medical intravenous injection syringe cylinder according to claim 2, which is characterized in that: the side wall of the driving groove (7) close to the soft plug body (3) is provided with a pointed bulge (12), the pointed bulge (12) is opposite to the extrusion end (111), and the contact end (112) is respectively positioned at the left side and the right side of the pointed bulge (12).

4. A medical care intravenous injection solution syringe according to any one of claims 1 to 3, characterized in that: the anti-slipping structure is characterized by further comprising a slipping sleeve (13) and a corrugated pipe sleeve (14), a slipping hole (20) penetrates through the end portion of the barrel body (1), the slipping sleeve (13) is slidably arranged in the slipping hole (20), the inner end (131) and the outer end (132) are arranged at the two ends of the slipping sleeve (13) respectively, the inner end (131) extends into the barrel body (1), the inner end (131) can abut against the inner barrel wall of the barrel body (1) to limit the slipping sleeve (13) to slip out of the barrel body (1) from the slipping hole (20), the outer end (132) extends out of the barrel body (1), the corrugated pipe sleeve (14) is sleeved outside the slipping sleeve (13), and the two ends of the corrugated pipe sleeve (14) are connected to the inner end (131) and the inner barrel wall of the barrel body (1) respectively;

the outer sleeve wall of the sliding sleeve (13) is provided with a jack (15);

the cylinder body (1) is provided with a driving positioning part (16), the driving positioning part (16) comprises a driving positioning rod (161) and a driving positioning part (17), the cylinder body (1) is provided with a driving positioning sliding groove (18), the driving positioning rod (161) is connected in the driving positioning sliding groove (18) in a sliding manner, the width of the driving positioning sliding groove (18) is larger than that of the driving positioning rod (161), the sliding direction of the driving positioning rod (161) is consistent with the length direction of the cylinder body (1), one end part of the driving positioning rod (161) is used for being inserted into or pulled out of the insertion hole (15), the other end of the driving positioning rod (161) is a bent end (1612), the bent end (1612) faces the inside of the cylinder body (1), and the driving positioning part (17) is used for pushing the bent end (1612) of the driving rod (8) to protrude out, and the driving positioning piece (17) can position the driving positioning rod (161) at a specified position.

5. The medical intravenous injection syringe cylinder according to claim 4, which is characterized in that: be equipped with drive positioning spring (19) in drive positioning spout (18), drive positioning spring (19) are used for driving drive positioning pole (161) toward deviating from push rod (4) one side and remove and make end of buckling (1612) remove to in drive positioning spout (18).

6. The medical intravenous injection syringe cylinder according to claim 4, which is characterized in that: the drive positioning rod (161) is close to the tip that is close to syringe needle (5) and is drive section (1611), drive section (1611) is the form of buckling, drive section (1611) can with the barrel (1) is close to the terminal surface laminating of syringe needle (5) mutually and is close to.

7. The medical intravenous injection syringe cylinder according to claim 4, which is characterized in that: drive setting element (17) are including drive positioning bolt (171), drive positioning bolt (171) threaded connection is in barrel (1) and run through into drive location spout (18), drive positioning bolt (171) tip offsets in drive locating lever (161) and can promote drive locating lever (161) toward being close to push rod (4) one side and remove.