CN210228809U

CN210228809U - Neonate's intensive care micro-liquid medicine injection device

Info

Publication number: CN210228809U
Application number: CN201920230464.XU
Authority: CN
Inventors: Suguo Zhang; 张素果; Fangfang Zhang; 张方方; Jing Xie; 谢静
Original assignee: Second Affiliated Hospital of Zhengzhou Unviersity
Current assignee: Second Affiliated Hospital of Zhengzhou Unviersity
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2020-04-03
Anticipated expiration: 2029-02-25

Abstract

A trace liquid medicine injection device for intensive care of neonates, which effectively solves the problems that the prior injector is difficult to control the extraction amount and the injection amount of trace liquid medicine, so that the resource waste is caused, and the adverse reaction is easily caused; the piston type automatic loading device comprises a needle cylinder, wherein a piston capable of sliding left and right is coaxially arranged in the needle cylinder, a rotatable first screw rod is coaxially arranged in the needle cylinder, the left end of the first screw rod is inserted into the piston and does not penetrate through the piston, a second screw rod which is consistent with the first screw rod in the axial direction is connected in a threaded manner in the first screw rod, the left end of the second screw rod does not penetrate through the first screw rod, the right end of the second screw rod penetrates through the needle cylinder and is provided with a pressing plate, a plurality of radial grooves which are uniformly distributed along the axial direction are formed in the inner wall of the needle cylinder, a radial sliding groove is formed in the outer edge surface of the piston, the bottom of the; the structure is simple, the operation is convenient, the conception is novel, and the practicability is strong.

Description

Neonate's intensive care micro-liquid medicine injection device

Technical Field

The utility model relates to a liquid medicine injection technical field, especially a neonate's intensive care micro-liquid medicine injection device.

Background

The traditional injector mainly comprises an injection tube and a push rod inserted in the injection tube in a sliding manner through a sealing plug, and when the injector is used, the push rod is pushed and pulled to drive the sealing plug in the injection tube to axially move, so that the functions of liquid suction and injection are realized, and the operation is very simple.

Neonate's severe patients are carrying out the guardianship treatment in-process, need carry out the microinjection of liquid medicine usually, adjust the health, and the extraction volume or the injection volume of liquid medicine are difficult to be controlled to traditional syringe, extravagant extraction time and resource increase patient's treatment cost even, and control injection speed very slowly when the injection, and the injection speed is too fast can lead to the patient adverse reaction to appear, reduces treatment, uses very inconveniently.

SUMMERY OF THE UTILITY MODEL

To the above situation, for overcoming the defect of prior art, the utility model aims at providing a neonate's intensive care micro-liquid medicine injection device, effectual volume of taking out and the injection volume of having solved current syringe and hardly controlling the micro-liquid medicine cause the wasting of resources, and easily cause the problem of adverse reaction.

The technical scheme of its solution is, the utility model discloses a cylinder, but the coaxial piston that is equipped with horizontal slip in the cylinder, the coaxial rotatable first screw rod that is equipped with in the cylinder, first screw rod left end inserts the piston and does not run through the piston, first screw rod female connection has the second screw rod rather than the axial is unanimous, second screw rod left end does not run through first screw rod, the second screw rod right-hand member runs through the cylinder and installs the clamp plate, set up a plurality of radial grooves along its axial equipartition on the cylinder inner wall, radial spout has been seted up on the piston outer fringe face, spout bottom has the locating pin that can insert radial inslot through spring coupling, be equipped with the scale mark with radial groove one-to-one on the cylinder outer fringe face.

Compared with the prior art, the beneficial effects of the utility model are that: the piston capable of sliding left and right is arranged in the needle cylinder, the piston is in fine thread connection with the first screw rod, the purpose of slow and uniform injection can be effectively achieved, the positioning pin capable of sliding and being inserted into the radial groove is arranged on the piston, quantitative liquid medicine suction can be effectively achieved, and the needle cylinder is simple in structure, convenient to operate, novel in conception and high in practicability.

Drawings

Fig. 1 is a front view of the utility model.

Fig. 2 is a cross-sectional view a-a of fig. 1 according to the present invention.

Fig. 3 is a cross-sectional view of B-B of fig. 1 according to the present invention.

Fig. 4 is a perspective view of the present invention.

Detailed Description

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

The needle cylinder comprises a needle cylinder 1, a piston 2 capable of sliding left and right is coaxially arranged in the needle cylinder 1, a rotatable first screw 3 is coaxially arranged in the needle cylinder 1, the left end of the first screw 3 is inserted into the piston 2 and does not penetrate through the piston 2, a second screw 4 consistent with the axial direction of the first screw is connected with the inner thread of the first screw 3, the first screw 3 is not penetrated through the left end of the second screw 4, a pressing plate 5 is installed at the right end of the second screw 4 which penetrates through the needle cylinder 1, a plurality of radial grooves 6 uniformly distributed along the axial direction of the needle cylinder 1 are formed in the inner wall of the needle cylinder 1, radial sliding grooves 7 are formed in the outer edge surface of the piston 2, positioning pins 9 capable of being inserted into the radial grooves 6 are connected to the bottoms of the sliding grooves 7 through springs 8, and scale marks 10 corresponding.

In order to make the piston 2 not rotate with the first screw 3 but move along the first screw 3 in the left-right direction, a guide rod 11 which is positioned in the right end of the needle cylinder 1 and is in the left-right axial direction is fixed, a guide hole 12 which can be matched with the guide rod 11 is arranged on the piston 2, and the left end of the guide hole 12 does not penetrate through the piston 2.

In order to make the second screw rod 4 and the needle cylinder 1 rotate relatively, the right end of the first screw rod 3 is connected with the needle cylinder 1 through a bearing 13.

For better use, the end of the radial slot 6 remote from the axis of the needle cylinder 1 does not extend through the needle cylinder 1, and the radial slot 6 is located on the right side of the needle cylinder 1.

In order to achieve better use effect, the thread specification on the first screw rod 3 is a small pitch and a fine thread, and the thread specification on the second screw rod 4 is a large pitch.

In order to achieve better use effect, the length of the piston 2 is equal to half of the length of the needle cylinder 1, the length of the first screw 3 is slightly larger than that of the piston 2, and the length of the second screw 4 is smaller than that of the first screw 3.

In order to achieve a better using effect, the needle cylinder 1 is made of transparent materials.

The left end of the needle cylinder 1 is provided with a needle 14.

When the utility model is used, a proper amount of liquid medicine is sucked into the needle cylinder 1 according to the amount of medicine to be injected, the needle cylinder 1 is held by one hand, the pressing plate 5 is pulled by the other hand to the right, the pressing plate 5 drives the second screw rod 4 to move from left to right, and the first screw rod 3 rotates on the second screw rod 4 due to the connection between the right end of the first screw rod 3 and the needle cylinder 1 through the bearing 13, so that the piston 2 moves from left to right in the needle cylinder 1 along the first screw rod 3;

meanwhile, the needle 14 sucks the liquid medicine into the needle cylinder 1, the piston 2 continuously moves rightwards as the second screw rod 4 is pulled leftwards and rightwards, a cavity between the left end of the piston 2 and the left side wall of the needle cylinder 1 is enlarged, namely more and more liquid medicine enters the needle cylinder 1, scale marks 10 on the outer edge surface of the needle cylinder 1 are observed, when the amount of the liquid medicine entering the needle cylinder 1 reaches a preset amount of the liquid medicine, namely the corresponding scale marks 10 are reached, the positioning pin 9 slides towards one side far away from the axis of the needle cylinder 1 in the sliding groove 7 under the elastic force action of the spring 8, the free end of the positioning pin 9 is inserted into the radial groove 6, at the moment, the second screw rod 4 stops being pulled rightwards, the liquid medicine in the needle cylinder 1 meets the requirement of the required amount of the liquid medicine to be injected, the operation is simple, the suction amount of the liquid medicine can be effectively controlled.

When injecting to the patient in vivo, slowly promote clamp plate 5 from the right side left side, clamp plate 5 promotes second screw rod 4 and moves to the left in first screw rod 3, make second screw rod 4 produce antiport, thereby make piston 2 along second screw rod 4 move to the left in cylinder 1, at this moment, 1 inner wall extrusion locating pin 9 of cylinder, locating pin 9 slides and compression spring 8 in spout 7, it is internal with the slow injection of liquid medicine to the patient through syringe needle 14 simultaneously, reach the trace, the purpose of even injection, improve treatment, alleviate medical personnel's burden.

The utility model discloses set up the thread specification on the second screw rod 4 and be coarse pitch, and set up bearing 13 between first screw rod 3 and cylinder 1, for when spurring or promote second screw rod 4, second screw rod 4 can drive first screw rod 3 and produce relative rotation, thereby make piston 2 remove along the production of first screw rod 3.

The utility model discloses set up the screw thread specification on the first screw rod 3 and be little screw pitch and for thin tooth screw thread, for when medical personnel slowly promote second screw rod 4 from the right side left, piston 2 is along first screw rod 3 slow moving in cylinder 1 to in with the slow injection of liquid medicine to the patient internal, avoid arousing patient's discomfort because of the rapid injection, stop the emergence of medical malpractice.

Claims

1. A micro-liquid medicine injection device for intensive care of neonates comprises a needle cylinder (1) and is characterized in that a piston (2) capable of sliding left and right is coaxially arranged in the needle cylinder (1), a rotatable first screw (3) is coaxially arranged in the needle cylinder (1), the left end of the first screw (3) is inserted into the piston (2) and does not penetrate through the piston (2), a second screw (4) which is consistent with the first screw in the axial direction is connected with the first screw (3) in an internal thread mode, the left end of the second screw (4) does not penetrate through the first screw (3), the right end of the second screw (4) penetrates through the needle cylinder (1) and is provided with a pressing plate (5), a plurality of radial grooves (6) which are uniformly distributed along the axial direction are formed in the inner wall of the needle cylinder (1), a radial sliding groove (7) is formed in the outer edge surface of the piston (2), the bottom of the sliding groove (7) is connected with, the outer edge surface of the needle cylinder (1) is provided with scale marks (10) which correspond to the radial grooves (6) one by one, the thread specification on the first screw (3) is a small pitch and is a fine thread, and the thread specification on the second screw (4) is a large pitch.

2. The neonatal intensive care monitoring micro-drug solution injection device as claimed in claim 1, wherein a guide rod (11) which is positioned inside the syringe (1) and is in the left-right axial direction is fixed at the right end of the syringe, a guide hole (12) which can be matched with the guide rod (11) is formed in the piston (2), and the left end of the guide hole (12) does not penetrate through the piston (2).

3. The neonatal intensive care micro-drug solution injection device as claimed in claim 1, wherein the right end of the first screw (3) is connected to the syringe (1) through a bearing (13).

4. A neonatal intensive care micro-drug solution injector as claimed in claim 1, wherein the end of the radial groove (6) remote from the axis of the syringe (1) does not penetrate the syringe (1), and the radial groove (6) is located on the right side of the syringe (1).

5. A neonatal intensive care micro-drug solution injector as claimed in claim 1, wherein the length of the plunger (2) is equal to half of the length of the barrel (1), the length of the first screw (3) is slightly greater than the length of the plunger (2), and the length of the second screw (4) is smaller than the length of the first screw (3).

6. The neonatal intensive care micro-drug solution injection device as claimed in claim 1, wherein the syringe (1) is made of a transparent material.

7. The neonatal intensive care micro-drug solution injection device as claimed in claim 1, wherein a needle (14) is mounted at the left end of the syringe (1).