CN211410416U

CN211410416U - Angiocardiography injector

Info

Publication number: CN211410416U
Application number: CN201922324840.4U
Authority: CN
Inventors: 孙洋; 张岩; 孟红
Original assignee: Fuwai Hospital of CAMS and PUMC
Current assignee: Fuwai Hospital of CAMS and PUMC
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-09-04
Anticipated expiration: 2029-12-20

Abstract

A cardioangiography injector effectively solves the problems that the handle of the existing injector is small in stress area, time-consuming and labor-consuming in use; the device comprises a left axial needle cylinder and a right axial needle cylinder, wherein a piston is coaxially and slidably connected in the needle cylinder, a push rod is coaxially arranged at the right end of the piston, the right end of the needle cylinder is in sealed sliding connection with the push rod, a three-way pipe communicated with the inside of the needle cylinder is arranged at the right side of the needle cylinder, the middle part of the three-way pipe is spherical, a spherical reversing valve core is arranged in the spherical area of the three-way pipe, a T-shaped round hole is formed in the reversing valve core, a hose communicated with the inside of the three-; the structure is simple, the operation is convenient, the conception is novel, and the practicability is strong.

Description

Angiocardiography injector

Technical Field

The utility model relates to a cardiovascular radiography auxiliary assembly technical field, especially a cardiovascular radiography injector.

Background

The angiocardiography is characterized in that a contrast medium is quickly injected into a heart cavity or a blood vessel through a cardiac catheter to enable the heart and the blood vessel to be developed under X-ray irradiation, and meanwhile, the method of quick photography, television photography or video tape recording and the like is adopted, the development process of the heart and the blood vessel cavity is shot, the blood flowing sequence containing the contrast medium and the filling condition of the heart blood vessel can be seen from the development result, so the physiological and anatomical changes of the heart and the blood vessel are solved.

SUMMERY OF THE UTILITY MODEL

To the above situation, in order to overcome the defects of the prior art, the utility model aims to provide a cardioangiography injector, which effectively solves the problem that the handle stress area of the existing injector is small, and the use is time-consuming and labor-consuming.

The technical scheme of its solution is, the utility model discloses a control axial cylinder, coaxial sliding connection has the piston in the cylinder, the coaxial push rod that is equipped with of piston right-hand member, sealed sliding connection between cylinder right-hand member and the push rod, the cylinder right side is equipped with the three-way pipe rather than inside intercommunication, the three-way pipe middle part is spherical, be equipped with spherical switching-over valve case in the three-way pipe spherical region, set up the round hole that is T shape in the switching-over valve case, the three-way pipe lower extreme is equipped with the hose rather than inside intercommunication, the free end of hose is equipped with the ball of aeri.

Compared with the prior art, the beneficial effects of the utility model are that: the inflation ball is extruded to the right side of the piston by extruding, the air pressure on the right side of the piston is increased, so that the piston moves leftwards to inject, when a medical worker extrudes the inflation ball, the inflation ball is arranged in the palm of the medical worker, the stress area is larger, the stress is more uniform, compared with the pushing of the existing injector pushing handle, the inflation ball is extruded more easily, the injection speed is maintained more easily, the medical worker supports the needle cylinder by one hand, the hand for supporting the needle cylinder does not need to perform injection operation, the needle cylinder is relatively easier, the stability of the needle cylinder can be maintained better, the phenomenon that the medical worker shakes due to the fact that the hand is too tired is effectively avoided, and the occurrence of side leakage of the contrast agent during injection is avoided; the structure is simple, the operation is convenient, the conception is novel, and the practicability is strong.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a perspective view of the utility model.

Fig. 3 is the utility model discloses a dissect left side and look the axonometric drawing.

Fig. 4 is an enlarged view of a in fig. 2 according to the present invention.

Fig. 5 is an enlarged view of B in fig. 3 according to the present invention.

Detailed Description

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

The device is shown in figures 1 to 5, and comprises a left needle cylinder 1 and a right needle cylinder 1 which are axial, a piston 2 is coaxially connected in the needle cylinder 1 in a sliding manner, a push rod 3 is coaxially arranged at the right end of the piston 2, the right end of the needle cylinder 1 is connected with the push rod 3 in a sliding manner in a sealing manner, a three-way pipe 4 communicated with the inside of the needle cylinder 1 is arranged at the right side of the needle cylinder 1, the middle part of the three-way pipe 4 is spherical, a spherical reversing valve core 5 is arranged in the spherical area of the three-way pipe 4, a T-shaped round hole 6 is formed in the reversing valve core 5, a hose 7 communicated with.

In order to prevent air leakage between the right end of the needle cylinder 1 and the push rod 3, the right end of the needle cylinder 1 is provided with an annular felt ring 9 which is sleeved on the outer side of the push rod 3, and the inner wall of the felt ring 9 is closely connected with the outer edge surface of the push rod 3 in a sliding manner.

In order to prevent the piston 2 from moving to the right for an excessively large distance so as to block the orifice of the three-way pipe 4, the needle cylinder 1 is provided with a ring-shaped stop ring 10 which is positioned at the left of the three-way pipe 4.

In order to increase the sealing effect between the three-way pipe 4 and the reversing valve core 5, a sealing gasket 11 is fixed on the inner wall of the spherical area of the three-way pipe 4, and the sealing gasket 11 is spherical and is tightly connected with the reversing valve core 5 in a sliding manner.

In order to rotate the valve core 5 of the reversing valve conveniently, a rotary handle 12 which penetrates through the sealing gasket 11 and the three-way pipe 4 in sequence is arranged on the front side of the valve core 5 of the reversing valve.

In order to conveniently inflate the piston 2 from the inflatable ball 8 to the right side, an air inlet pipe 13 communicated with the outside is arranged in the inflatable ball 8, a first one-way valve 14 with an opening facing the inside of the inflatable ball 8 is arranged in the air inlet pipe 13, and a second one-way valve 15 with an opening facing the three-way pipe 4 is arranged in the hose 7.

In order to facilitate puncturing the skin or muscle tissue of a patient, the left end of the needle cylinder 1 is nested with a puncturing needle 16.

The utility model discloses at the beginning, the axial part about the round hole 6 that is T-shaped is coaxial with the axial part about three-way pipe 4, and hose 7 is through switching-over valve case 5 and the inside intercommunication of cylinder 1, and at this moment, the axial part about round hole 6 is coaxial with the axial part about three-way pipe 4, and is located the right side of switching-over valve case 5, under the effect of sealed pad 11, keeps the closed state;

the utility model discloses when using, at first through twist grip 12, anticlockwise rotation switching-over valve case 5, and rotate 90 degrees, make round hole 6 upper and lower axial part rotate to the horizontal direction, and communicate with the left side of three-way pipe 4, at this moment, round hole 6 left and right sides axial part rotates to the vertical direction, and communicate with the upper side of three-way pipe 4, at this moment, the inside of cylinder 1 is communicated with three-way pipe 4 left side through round hole 6, the three-way pipe 4 downside is in the closed condition, medical personnel pass through push rod 3, when controlling piston 2 and sucking contrast agent, guarantee that piston 2 right side is communicated with the external world through the left side of three-way pipe 4, maintain piston 2 right side atmospheric pressure balance, make things convenient for medical personnel to stimulate piston 2;

when the contrast agent is injected, firstly, the reversing valve core 5 is rotated along the needle by rotating the handle 12, and is rotated by 90 degrees, the initial position of the reversing valve core 5 is recovered, so that the inside of the needle cylinder 1 is communicated with the inside of the hose 7 through the reversing valve core 5, the left side of the three-way pipe 4 is in a closed state, then the skin or muscle tissue of a patient is punctured by using the puncture needle 16, after the puncture is completed, a medical worker holds the needle cylinder 1 by one hand to maintain the stability of the needle cylinder 1, holds the inflatable ball 8 by the other hand, extrudes the gas in the inflatable ball 8 to the right side of the piston 2 through the hose 7, increases the air pressure on the right side of the piston 2, and accordingly pushes the piston 2 to move leftwards, and injects the contrast agent on;

when the inflatable ball 8 is extruded, the first one-way valve 14 is in a closed state, the second one-way valve 15 is opened, gas enters the needle cylinder 1 through the hose 7 and the reversing valve spool 5, the right end of the needle cylinder 1 is in sealed sliding connection with the push rod 3, the push rod 3 can slide left and right, sealing is achieved, gas leakage is prevented, the right end of the needle cylinder 1 is provided with the felt ring 9, sealing is achieved further, gas leakage cannot occur between the right end of the needle cylinder 1 and the push rod 3, when the inflatable ball 8 is loosened, the first one-way valve 14 is in a closed state, the pressure on the right side of the piston 2 is maintained to be stable, the second one-way valve 15 is opened, the inflatable ball 8 is convenient to restore, external air is sucked, and next extrusion is facilitated;

when controlling push-and-pull push rod 3 and carrying out suction contrast medium, owing to be equipped with the fender ring 10 that is located three-way pipe 4 left side in the cylinder 1, guarantee that piston 2 can not move the distance that moves to too big to block up the opening of three-way pipe 4 upside, conveniently extrude inflatable ball 8 and let in gas to piston 2 right side, increase the atmospheric pressure on piston 2 right side, realize contrast medium's injection.

The utility model discloses set up sealed 11, be in order to play sealed effect to switching-over valve case 5 to, set up the spherical region inner wall fixed connection who seals 11 and three-way pipe 4, be in order to prevent rotatory switching-over valve case 5, sealed 11 aversion stops up the 4 mouths of pipe of three-way pipe, thereby leads to switching-over valve case 5 can not switch on with three-way pipe 4.

Claims

1. The utility model provides a cardiovascular radiography injector, including controlling axial cylinder (1), its characterized in that, coaxial sliding connection has piston (2) in cylinder (1), piston (2) right-hand member is coaxial to be equipped with push rod (3), sealed sliding connection between cylinder (1) right-hand member and push rod (3), cylinder (1) right side is equipped with three-way pipe (4) rather than inside intercommunication, three-way pipe (4) middle part is spherical, be equipped with spherical switching-over valve case (5) in three-way pipe (4) spherical region, it is T-shaped's round hole (6) to open in switching-over valve case (5), three-way pipe (4) lower extreme is equipped with hose (7) rather than inside intercommunication, the free end of hose (7) is equipped with gas ball (8).

2. The angiographic injector according to claim 1, wherein the right end of the syringe (1) is provided with a circular felt ring (9) which is sleeved on the outer side of the push rod (3), and the inner wall of the felt ring (9) is tightly connected with the outer edge surface of the push rod (3) in a sliding manner.

3. An angiographic injector according to claim 1, wherein the syringe (1) is provided with a ring-shaped stop ring (10) to the left of the tee (4).

4. The angiographic injector according to claim 1, wherein a sealing gasket (11) is fixed on the inner wall of the spherical area of the three-way pipe (4), and the sealing gasket (11) is spherical and is tightly connected with the valve core (5) of the reversing valve in a sliding manner.

5. The angiographic injector according to claim 1, characterized in that the front side of the valve core (5) of the reversing valve is provided with a rotary handle (12) which sequentially penetrates through the sealing gasket (11) and the three-way pipe (4).

6. The angiographic injector according to claim 1, wherein an air inlet tube (13) is provided in the inflatable balloon (8) and communicates with the outside, a first check valve (14) is provided in the air inlet tube (13) and opens into the inflatable balloon (8), and a second check valve (15) is provided in the hose (7) and opens into the tee (4).

7. An angiographic injector according to claim 1, characterized in that the left end of the syringe (1) is nested with a puncture needle (16).