CN212383047U

CN212383047U - Injection device for oncology department

Info

Publication number: CN212383047U
Application number: CN202020156354.6U
Authority: CN
Inventors: 陈洁; 其他发明人请求不公开姓名
Original assignee: Tcm Hospital Changxing
Current assignee: Tcm Hospital Changxing
Priority date: 2020-02-09
Filing date: 2020-02-09
Publication date: 2021-01-22
Anticipated expiration: 2030-02-09

Abstract

The utility model discloses an injection apparatus for oncology, including cylinder, baffle, first push rod, first clamp plate, needle tubing and adapter sleeve, first cavity has been seted up to the inside bottom of first push rod, and first push rod is equipped with push mechanism in first cavity department, the fixed box of bottom fixedly connected with of first push rod, the first piston of bottom fixedly connected with of fixed box, and the middle part of the bottom of fixed box and first piston has seted up same venthole, and fixed box is equipped with the connecting rod in venthole department, and the top fixedly connected with fixed plate of connecting rod, equal fixedly connected with spring between the bottom both sides of fixed plate and the bottom inner wall of fixed box, the bottom fixedly connected with rubber slab of connecting rod. The utility model discloses a set up first cavity, can continue to press the air that the second clamp plate in with first cavity after utilizing the syringe to inject the medicine and push into the needle tubing to make remaining medicine also can be injected into the human body in the needle tubing, avoided the waste of medicine.

Description

Injection device for oncology department

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to an injection device for oncology.

Background

The injector is an unusual and necessary medical instrument regardless of the department in the hospital, has a simple structure, and can directly inject medicine into a human body through intravenous injection.

Through search, the Chinese patent with publication number CN208693934U discloses an injector for oncology department, which comprises an injector body, the syringe body comprises a syringe tube and a needle head, one end of the syringe tube is provided with a needle tube seat, the needle tube seat is provided with a groove, the groove is internally provided with a first effective chlorine disinfection sheet, one side of the needle tube seat is provided with a through hole, the front side of the needle tube seat is provided with a fixed seat, the syringe tube is internally provided with an injection tube and an extraction tube, rubber pistons are arranged in the injection pipe and the extraction pipe, one end of the piston rod passes through the through hole and is arranged at one side of the rubber piston, one end of the injection tube is provided with a first connecting tube, one end of the extraction tube is provided with a second connecting tube, an injection channel and an extraction channel are arranged in the needle head, and the injection channel and the extraction channel are respectively sleeved on the first connecting pipe and the second connecting pipe. When the piston is pushed to the extreme position during medicine injection, a part of medicine still remains in the needle tube, and the part of medicine of a single injector is not much, but the quantity is large, so that a great part of medicine is wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing an injection device for oncology.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an injection device for oncology department comprises a needle cylinder, a baffle, a first push rod, a first pressing plate, a needle tube and a connecting sleeve, wherein a first cavity is formed in the bottom end inside the first push rod, a pushing mechanism is arranged at the first cavity of the first push rod, a fixing box is fixedly connected to the bottom end of the first push rod, a first piston is fixedly connected to the bottom end of the fixing box, the bottom end of the fixing box and the middle part of the first piston are respectively provided with a same air outlet, a connecting rod is arranged at the air outlet of the fixing box, a fixing plate is fixedly connected to the top end of the connecting rod, springs are fixedly connected between two sides of the bottom end of the fixing plate and the inner wall of the bottom end of the fixing box, a rubber plate is fixedly connected to the bottom end of the connecting rod, a circular through hole is formed in the bottom end of one side of the fixing box, and three valves are fixedly, the outer wall of the fixed box is fixedly connected with a filter screen at the round through hole.

Further, push mechanism includes the second piston, the top fixedly connected with second push rod of second piston, cylindrical through-hole has been seted up at the top of first cavity to first push rod and first clamp plate, the second push rod extends to the top of first push rod and first clamp plate at cylindrical through-hole, the top fixedly connected with second clamp plate of second push rod.

Further, the volume of the first cavity is equal to the volume of the needle tube.

Furthermore, the first pressing plate, the second pressing plate and the baffle are coated with anti-skid coatings.

Furthermore, the bottom end of the baffle is fixedly connected with a limiting ring, and the top end of the inner side of the limiting ring is fixedly connected with a friction block.

The utility model has the advantages that:

1. through setting up first cavity, can continue to press the second clamp plate and push into the needle tubing with the air in the first cavity after utilizing the syringe to inject the medicine to make remaining medicine in the needle tubing also can be injected into the human body, avoided the waste of medicine.

2. Through setting up valve and first piston, can inhale the air to first cavity in from the outside when pulling the second clamp plate in, simultaneously because the rubber slab blocks up the venthole, so the air can't get into first cavity from the venthole, and because the valve is blockked by the filter screen when pressing the second clamp plate, so the air can't be discharged from valve, and can only discharge from venthole to reach the effect with air input needle tubing.

3. Through setting up clutch blocks and spacing ring, can increase the frictional force between finger and the syringe when the syringe uses to the dangerous condition that has avoided exerting oneself too big and lead to syringe and hand to break away from takes place.

Drawings

Fig. 1 is a sectional view of an injection device for oncology proposed in example 1.

Fig. 2 is a left side view of a valve of the injection device for oncology set forth in example 1.

Fig. 3 is a right side view of a valve of the injection device for oncology set forth in example 1.

Fig. 4 is a sectional view of an injection device for oncology proposed in example 2.

In the figure: the device comprises a needle cylinder 1, a baffle 2, a first push rod 3, a first pressure plate 4, a second push rod 5, a second pressure plate 6, a second piston 7, a first cavity 8, a fixing box 9, a first piston 10, a needle tube 11, a connecting sleeve 12, an air outlet 13, a connecting rod 14, a spring 15, a fixing plate 16, a filter screen 17, a valve 18, a rubber plate 19 and a limiting ring 20.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1

Referring to fig. 1-3, an injection device for oncology department, comprising a needle cylinder 1, a baffle 2, a first push rod 3, a first pressing plate 4, a needle tube 11 and a connecting sleeve 12, wherein the bottom end inside the first push rod 3 is provided with a first cavity 8, the first push rod 3 is provided with a pushing mechanism at the first cavity 8, the bottom end of the first push rod 3 is fixedly connected with a fixing box 9, the bottom end of the fixing box 9 is fixedly connected with a first piston 10, the bottom end of the fixing box 9 and the middle part of the first piston 10 are provided with a same air outlet 13, the fixing box 9 is provided with a connecting rod 14 at the air outlet 13, the top end of the connecting rod 14 is fixedly connected with a fixing plate 16, springs 15 are fixedly connected between both sides of the bottom end of the fixing plate 16 and the inner wall of the bottom end of the fixing box 9, the bottom end of the connecting rod 14 is fixedly connected with a rubber plate 19, the rubber plate 19, and the fixed box 9 is fixedly connected with three valves 18 at the inner side of the circular through hole with equal distance, and the outer wall of the fixed box 9 is fixedly connected with a filter screen 17 at the circular through hole.

The pushing mechanism comprises a second piston 7, a second push rod 5 is fixedly connected to the top end of the second piston 7, a cylindrical through hole is formed in the top end of the first cavity 8 through the first push rod 3 and the first pressing plate 4, the second push rod 5 extends to the top ends of the first push rod 3 and the first pressing plate 4 through the cylindrical through hole, a second pressing plate 6 is fixedly connected to the top end of the second push rod 5, the volume of the first cavity 8 is equal to that of the needle tube 11, and anti-skid coatings are coated on the outer portions of the first pressing plate 4, the second pressing plate 6 and the baffle 2.

The working principle is as follows: when the device is used for injecting medicine, the second pressing plate 6 is firstly pressed to ensure that the air in the first cavity 8 is completely discharged, then the needle tube 11 is used for sucking the medicine and then the medicine is injected in the same way as a conventional injector, the second pressing plate 6 is pulled after the medicine is injected, the second pressing plate 6 drives the second piston 7 to move upwards through the second push rod 5, at the moment, the air can be sucked into the first cavity 8 from the valve 18, the second pressing plate 6 is pushed to the limit position and then pushes the second pressing plate 6, at the moment, the valve 18 cannot be expanded outwards because the valve 18 is blocked by the filter screen 17, at the moment, the air can be discharged into the bottom end of the first piston 10 from the air outlet 13, and when the air is pushed into the needle tube 11, the medicine remained in the needle tube 11 can be injected into a human body, because the volume of the first cavity 8 is equal to the volume of the needle tube 11, so that air is not injected into the human body.

Example 2

Referring to fig. 4, in order to enhance the safety of the syringe in use compared to embodiment 1, in this embodiment, a stop ring 20 is fixedly connected to the bottom end of a baffle 2, and a friction block is fixedly connected to the top end of the inner side of the stop ring 20.

The working principle is as follows: when the device is used for injecting medicine, the second pressing plate 6 is firstly pressed to ensure that the air in the first cavity 8 is completely discharged, then the needle tube 11 is used for sucking the medicine and then the medicine is injected in the same way as a conventional injector, the second pressing plate 6 is pulled after the medicine is injected, the second pressing plate 6 drives the second piston 7 to move upwards through the second push rod 5, at the moment, the air can be sucked into the first cavity 8 from the valve 18, the second pressing plate 6 is pushed to the limit position and then pushes the second pressing plate 6, at the moment, the valve 18 cannot be expanded outwards because the valve 18 is blocked by the filter screen 17, at the moment, the air can be discharged into the bottom end of the first piston 10 from the air outlet 13, and when the air is pushed into the needle tube 11, the medicine remained in the needle tube 11 can be injected into a human body, because the volume of the first cavity 8 is equal to the volume of the needle tube 11, therefore, no air is injected into the human body, and the friction block and the limiting ring 20 can enhance the stability when the injector is held in the process of using the injector.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. An injection device for oncology department comprises a needle cylinder (1), a baffle plate (2), a first push rod (3), a first pressing plate (4), a needle tube (11) and a connecting sleeve (12), and is characterized in that a first cavity (8) is formed in the bottom end of the interior of the first push rod (3), a pushing mechanism is arranged at the position of the first cavity (8) of the first push rod (3), a fixing box (9) is fixedly connected to the bottom end of the first push rod (3), a first piston (10) is fixedly connected to the bottom end of the fixing box (9), the same air outlet hole (13) is formed in the bottom end of the fixing box (9) and the middle of the first piston (10), a connecting rod (14) is arranged at the position of the air outlet hole (13) of the fixing box (9), a fixing plate (16) is fixedly connected to the top end of the connecting rod (14), springs (15) are fixedly connected between the two sides of the bottom end of the fixing plate (16) and the inner wall, the bottom fixedly connected with rubber slab (19) of connecting rod (14), rubber slab (19) are in the bottom of first piston (10), circular through-hole has been seted up to one side bottom of fixed box (9), and fixed box (9) are at the three valve (18) of the inboard equidistance fixedly connected with of circular through-hole, the outer wall of fixed box (9) is at circular through-hole department fixedly connected with filter screen (17).

2. The injection device for the oncology department according to claim 1, wherein the pushing mechanism comprises a second piston (7), a second push rod (5) is fixedly connected to the top end of the second piston (7), a cylindrical through hole is formed in the top end of the first cavity (8) by the first push rod (3) and the first pressing plate (4), the second push rod (5) extends to the top ends of the first push rod (3) and the first pressing plate (4) at the cylindrical through hole, and a second pressing plate (6) is fixedly connected to the top end of the second push rod (5).

3. An injection device for oncology according to claim 2, characterised in that the volume of the first cavity (8) is equal to the volume of the needle (11).

4. An injection device for oncology department according to claim 3, characterized in that the first pressing plate (4), the second pressing plate (6) and the baffle plate (2) are coated with a non-slip coating on the outside.

5. The injection device for the oncology department according to any one of claims 1 to 4, wherein a limiting ring (20) is fixedly connected to the bottom end of the baffle plate (2), and a friction block is fixedly connected to the top end of the inner side of the limiting ring (20).