CN215024069U

CN215024069U - Medicine suction syringe

Info

Publication number: CN215024069U
Application number: CN202120550195.2U
Authority: CN
Inventors: 汪英
Original assignee: Zhejiang Cancer Hospital
Current assignee: Zhejiang Cancer Hospital
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-12-07
Anticipated expiration: 2031-03-17

Abstract

The utility model relates to a medicine suction cylinder, including cylinder and push rod, the open end of cylinder has the suction spare that is used for sucking the interior gas of cylinder, and the push rod includes piston end, pull rod portion and push-and-pull end, and the middle-section part of pull rod portion separately is equipped with movable chamber, and a plurality of activity groove has been seted up to the both sides in activity chamber, and every activity inslot all has the movable block that can stretch out or return to in the pull rod, and the removal of activity intracavity is connected with and is used for controlling the movable block to stretch out or return the control lever that returns, and the open end of cylinder is equipped with and does spacing complex stopper with the movable block.

Description

Medicine suction syringe

Technical Field

The utility model relates to the technical field of medical equipment, in particular to medicine suction syringe.

Background

The technical development in the field of syringes, represented by conventional syringes, pre-filled syringes, filled drug syringes, is increasing, and the range of clinical applications is also increasing.

The prior art injectors have the following disadvantages: 1. the pumping quantity of the liquid medicine cannot be accurately controlled, and inaccurate metering is easily caused when small-dose liquid medicine is injected. 2. When the liquid medicine is sucked, the needle is easy to be polluted by manual drawing.

SUMMERY OF THE UTILITY MODEL

To the deficiency that prior art exists, the utility model aims to provide a medicine suction syringe to solve above-mentioned technical problem.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a medicine suction syringe, including cylinder and push rod, the open end of cylinder has the suction spare that is used for sucking the interior gas of cylinder, the push rod includes the piston end, pull rod portion and push-and-pull end, the well section part of pull rod portion separately is equipped with movable chamber, a plurality of activity groove has been seted up to the both sides in activity chamber, every activity inslot all has the movable block that can stretch out or retract to the push rod in, the removal is connected with and is used for controlling the movable block to stretch out or retract the control lever, the open end of cylinder is equipped with and does spacing complex stopper with the movable block.

Through adopting above-mentioned technical scheme, when the cylinder needs the drawing, stretch out through the movable block of control lever control different positions, realize the restriction to the outside pull distance of push rod, and then the accurate control cylinder is to the suction volume of liquid medicine, also avoids simultaneously because medical personnel directly causes the pollution to the push rod with the hand contact pull push rod.

The utility model discloses further set up to: the movable block is controlled to be pressed towards the pull rod all the time through the reset assembly, the reset assembly comprises a containing cavity located in the middle section of the movable groove, a guide rod in the containing cavity, a guide piece and a reset spring, the guide rod is sleeved with the guide piece, one end of the reset spring is abutted to the containing cavity, the other end of the reset spring is abutted to the guide piece, and the guide piece is fixedly connected with the movable block. .

Through adopting above-mentioned technical scheme, the movable block compresses tightly towards in the pull rod all the time through reset assembly control, avoids the movable block to stretch out by mistake and then influence the accurate control of cylinder to liquid medicine suction volume when need not stretch out pull rod portion.

The utility model discloses further set up to: the control rod comprises a limiting end which is arranged in the movable cavity and used for controlling the movable block to extend out, a connecting part connected with the limiting end, and a drawing end which is arranged at the other end of the connecting part and extends out of the push rod.

Through adopting above-mentioned technical scheme, can be more laborsaving outwards pull the control lever through the pull end, simultaneously can be more efficient control movable block stretch out or retract through spacing end.

The utility model discloses further set up to: the movable block comprises an extending end capable of extending out of the movable groove and an abutting end existing in the movable cavity, the upper side face of the movable block, which is positioned at the abutting end, is provided with a first inclined plane, and one side, facing the open end of the needle cylinder, of the limiting end is provided with a second inclined plane.

Through adopting above-mentioned technical scheme, can be more laborsaving, smooth and easy through the butt end through the spacing end of cooperation between first inclined plane and the second inclined plane.

The utility model discloses further set up to: the lower side surface of the abutting end is provided with an abutting piece which is abutted against the limiting end, and the abutting piece is perpendicular to the lower side surface of the movable block by 90 degrees. .

Through adopting above-mentioned technical scheme, can be more firm through setting up the butt piece and block moving block's backspacing, avoid moving block mistake to backspace and then influence the accurate control of cylinder to liquid medicine suction volume.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a sectional view of the inner structure of the push rod of the present invention;

fig. 3 is a partially enlarged view of a portion a in fig. 2.

Reference numerals: 1. a needle cylinder; 101. a suction member; 102. a limiting block; 2. a push rod; 201. a piston end; 202. a pull rod part; 203. a push-pull end; 204. a movable cavity; 205. a movable groove; 3. a movable block; 301. an extension end; 302. a butting end; 303. a first inclined plane; 304. an abutting member; 4. a control lever; 401. a limiting end; 402. a connecting portion; 403. drawing the end; 404. a second inclined plane; 5. an accommodating cavity; 501. a guide bar; 502. a guide member; 503. a return spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1 to 3, the utility model discloses a medicine suction syringe 1 of embodiment, including syringe 1 and push rod 2, the open end of syringe 1 has the suction piece 101 that is used for sucking in syringe 1 gas, push rod 2 includes piston end 201, pull rod portion 202 and push-and-pull end 203, the well section part of pull rod portion 202 separately is equipped with movable chamber 204, a plurality of activity groove 205 has been seted up to the both sides in activity chamber 204, all have in every activity groove 205 and stretch out or retract to the movable block 3 in the push rod 2, it is connected with the control lever 4 that is used for controlling movable block 3 to stretch out or retract to move in the activity chamber 204, the open end of syringe 1 is equipped with and does limit fit's stopper 102 with movable block 3. When the liquid medicine extracting device is used, when the needle cylinder 1 needs to extract liquid, the control rod 4 is pulled to control the movable blocks 3 on two sides of a specific position to synchronously extend out of the push rod 2, then the suction piece 101 is opened, gas in the needle cylinder 1 is sucked through the suction piece 101, negative pressure is formed in the needle cylinder 1, the negative pressure in the needle cylinder 1 enables the push rod 2 to move towards the outside of the needle cylinder 1, the needle cylinder 1 sucks liquid medicine while the push rod 2 moves, the movable blocks 3 abut against the limiting blocks 102 at the opening end of the needle cylinder 1 after the push rod 2 moves towards the outside of the needle cylinder 1 for a certain distance, the limiting blocks 102 have a blocking effect on the movement of the push rod 2, the push rod 2 cannot continue to move, the suction of the needle cylinder 1 to the liquid medicine is stopped, then the suction piece 101 is closed, the control rod 4 is used for controlling the extension of the movable blocks 3 at different positions, the outward drawing distance of the push rod 2, and further accurately controlling the suction amount of the needle cylinder 1 to the liquid medicine, meanwhile, the pollution to the push rod 2 caused by the fact that medical staff directly touch and pull the push rod 2 by hands is also avoided.

The movable block 3 is controlled by the reset assembly to be pressed towards the pull rod all the time, the reset assembly comprises an accommodating cavity 5 located in the middle section of the movable groove 205, a guide rod 501 existing in the accommodating cavity 5, a guide piece 502 sleeved outside the guide rod 501 and a reset spring 503, one end of the reset spring 503 is abutted to the other end of the accommodating cavity 5 and abutted to the guide piece 502, and the guide piece 502 is fixedly connected with the movable block 3. When the device is used, the movable block 3 is always pressed towards the interior of the push rod 2 through the control of the reset assembly, the guide rod 501 is sleeved with the guide piece 502 and the reset spring 503, one end of the reset spring 503 is abutted to the accommodating cavity 5, the other end of the reset spring is abutted to the guide piece 502, the reset spring 503 always applies force towards the inner side of the push rod 2 to the guide piece 502, the guide piece 502 enables the movable block 3 to be always extruded towards the interior of the pull rod part 202, and the reset assembly is used for avoiding that the movable block 3 mistakenly extends out when the pull rod part 202 does not need to extend out so as to influence the accurate control of the suction amount of the liquid medicine by the needle cylinder 1.

The control rod 4 comprises a limiting end 401 which is arranged in the movable cavity 204 and used for controlling the movable block 3 to extend out, a connecting part 402 which is connected with the limiting end 401, and a drawing end 403 which is positioned at the other end of the connecting part 402 and extends out of the push rod 2; the movable block 3 comprises an extending end 301 which can extend out of the movable groove 205 and an abutting end 302 which exists in the movable cavity 204, the upper side surface of the movable block 3, which is positioned at the abutting end 302, is provided with a first inclined surface 303, and one side, facing the open end of the needle cylinder 1, of the limiting end 401 is provided with a second inclined surface 404; the lower side of the abutting end 302 is provided with an abutting piece 304 abutting against the limiting end 401, and the abutting piece 304 is perpendicular to the lower side surface of the movable block 3 by 90 degrees. When the control device is used, when the movable block 3 at a specific position needs to be controlled to extend, the control rod 4 can be pulled outwards in a labor-saving manner through the pulling end 403, the second inclined surface 404 of the limiting end 401 is in contact with the second inclined surface 404 of the abutting end 302 of the movable block 3 when the control rod 4 is pulled, the limiting end 401 can pass through the abutting end 302 more easily and smoothly through the first inclined surface 303 and the second inclined surface 404 in a matching manner, then the limiting end 401 reaches the abutting part 304 and abuts against the abutting part 304, the abutting part 304 has a blocking effect on the retraction of the movable block 3 so as to enable the extending end 301 of the movable block 3 to extend out of the pull rod, and when the movable block 3 needs to retract, only the control rod 4 needs to be pulled again.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medicine suction syringe comprises a syringe (1) and a push rod (2), and is characterized in that: the open end of cylinder (1) has suction piece (101) that are used for sucking gas in cylinder (1), push rod (2) are including piston end (201), pull rod portion (202) and push-and-pull end (203), the midsection part of pull rod portion (202) separately is equipped with movable chamber (204), a plurality of activity groove (205) have been seted up to the both sides in activity chamber (204), every all have in activity groove (205) and can stretch out or retract movable block (3) to in push rod (2), it has control lever (4) that are used for controlling movable block (3) to stretch out or retract to move in activity chamber (204), the open end of cylinder (1) be equipped with spacing complex stopper (102) is done in movable block (3).

2. A suction syringe as claimed in claim 1, wherein: the movable block (3) is pressed towards the pull rod all the time through the control of the reset assembly, the reset assembly comprises an accommodating cavity (5) located in the middle section of the movable groove (205), a guide rod (501) existing in the accommodating cavity (5), a guide piece (502) sleeved outside the guide rod (501) and a reset spring (503), one end of the reset spring (503) is abutted to the accommodating cavity (5) and the other end of the reset spring is abutted to the guide piece (502), and the guide piece (502) is fixedly connected with the movable block (3).

3. A suction syringe as claimed in claim 1, wherein: the control rod (4) comprises a limiting end (401) which is arranged in the movable cavity (204) and used for controlling the movable block (3) to extend out, a connecting part (402) connected with the limiting end (401), and a drawing end (403) which is positioned at the other end of the connecting part (402) and extends out of the push rod (2).

4. A suction syringe as claimed in claim 1, wherein: the movable block (3) comprises an extending end (301) capable of extending out of the movable groove (205) and an abutting end (302) existing in the movable cavity (204), the upper side face of the movable block (3) located at the abutting end (302) is provided with a first inclined surface (303), and one side, facing the open end of the needle cylinder (1), of the limiting end (401) is provided with a second inclined surface (404).

5. A suction syringe as claimed in claim 4, wherein: the lower side surface of the abutting end (302) is provided with an abutting piece (304) abutted against the limiting end (401), and the abutting piece (304) is perpendicular to the lower side surface of the movable block (3) by 90 degrees.