CN214632171U

CN214632171U - Heart radiography device

Info

Publication number: CN214632171U
Application number: CN202022160321.1U
Authority: CN
Inventors: 王迪
Original assignee: China Japan Friendship Hospital
Current assignee: China Japan Friendship Hospital
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-11-09
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a cardioangiography device, including the needle cover, needle cover one end is provided with the honeycomb duct, the honeycomb duct is kept away from needle cover one end and is provided with the needle tubing, the inside sliding connection of needle cover has the piston, piston top fixedly connected with piston rod, the piston rod outside is provided with spacing subassembly, spacing subassembly includes first carousel, second carousel, spacing dish, stopper and lug, first carousel thread connection is in the piston rod outside, the second carousel rotates to be connected in the first carousel outside, second carousel fixed connection is inside the needle cover, spacing dish sets up in first carousel bottom. The utility model discloses a restriction first carousel rotates the continuation that prevents the piston rod and moves down, is favorable to restricting the speed that the piston rod moved down through this structure to guarantee to carry the contrast medium in the safety range, have higher factor of safety in the in-service use, the practicality is strong.

Description

Heart radiography device

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to cardiography device.

Background

The cardiac angiography examination is to insert a very thin catheter into your aorta, and then inject contrast agent into the aorta blood through a small opening in the front of the catheter, so that the X-ray can display the shape of the blood vessels and the heart of the contrast agent flowing along the blood vessels on a display screen.

However, in practical use of the current cardiac imaging apparatus, there is no speed-limiting structure for injecting a contrast medium, and if the speed of injecting the contrast medium is too high during treatment, the patient may be threatened, so that the safety of the current cardiac imaging apparatus needs to be improved.

Therefore, it is necessary to invent a cardiac imaging apparatus to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cardioangiography device, can drive first carousel when the piston rod downstream and rotate, and then can drive spacing dish through branch and rotate, when the speed of piston rod downstream is too big, the centrifugal force that the stopper received is greater than the pulling force of wind spring to it, therefore the stopper can rotate and outstanding recess to the outside, can block the stopper at the spacing of lug this moment and continue to rotate, thereby can restrict spacing dish and rotate, and then rotate the continuation that prevents the piston rod through restricting first carousel and move down, be favorable to restricting the speed that the piston rod moved down through this structure, thereby guarantee to carry the contrast medium in the safety range, higher factor of safety has in the in-service use, therefore, the clothes hanger is strong in practicability, with the above-mentioned weak point in the solution technology.

In order to achieve the above object, the present invention provides the following technical solutions: a cardiac angiography device comprises a needle sleeve, wherein a guide pipe is arranged at one end of the needle sleeve, a needle tube is arranged at one end of the guide pipe, which is far away from the needle sleeve, a piston is connected inside the needle sleeve in a sliding manner, the top of the piston is fixedly connected with a piston rod, and a limiting assembly is arranged outside the piston rod;

spacing subassembly includes first carousel, second carousel, spacing dish, stopper and lug, first carousel thread connection is in the piston rod outside, the second carousel rotates to be connected in the first carousel outside, second carousel fixed connection is inside the needle cover, spacing dish sets up in first carousel bottom, fixedly connected with branch between spacing dish and the first carousel, the stopper rotates to be connected in the spacing dish outside, lug fixed connection is inside the needle cover, lug and stopper phase-match.

Preferably, the limiting disc is provided with a groove in the outer side, the top and the bottom of the limiting block are fixedly connected with rotating shafts, and the limiting block is connected to the inside of the groove in a rotating mode through the rotating shafts.

Preferably, a coil spring is arranged outside the rotating shaft.

Preferably, the number of the supporting rods is set to be a plurality of, and the supporting rods are distributed on the top of the limiting disc in an annular array mode.

Preferably, the piston rod outside is provided with the external screw thread, first carousel inner wall is provided with the internal thread that meshes with the external screw thread mutually, first carousel and second carousel pass through the bearing and rotate the connection.

Preferably, one end of the piston rod, which is far away from the piston, is fixedly connected with a pressure plate.

Preferably, the number of the grooves is set to be a plurality of, and the grooves are distributed on the outer side of the limiting disc in an annular array mode.

Preferably, the struts and lugs are made of a plastics material.

In the technical scheme, the utility model provides a technological effect and advantage:

can drive first carousel when the piston rod downstream and rotate, and then can drive spacing dish through branch and rotate, when the speed of piston rod downstream is too big, the centrifugal force that the stopper received is greater than the pulling force of wind spring to it, therefore the stopper can rotate and outstanding recess to the outside, can block the stopper at the spacing of lug and continue to rotate this moment, thereby can restrict spacing dish and rotate, and then rotate the continuation that prevents the piston rod through restricting first carousel and move down, be favorable to restricting the speed that the piston rod moved down through this structure, thereby guarantee to carry the contrast-medium in the safety range, higher factor of safety has in the in-service use, therefore, the clothes hanger is strong in practicability.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

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

fig. 2 is a schematic structural view of a second turntable of the present invention;

FIG. 3 is a schematic view of the structure of the limiting plate of the present invention;

fig. 4 is a cross-sectional view of the needle guard of the present invention;

fig. 5 is a cross-sectional view of the limiting disc of the present invention;

FIG. 6 is an enlarged view of the portion A of FIG. 2 according to the present invention;

fig. 7 is an enlarged view of the structure of the part B in fig. 5 according to the present invention.

Description of reference numerals:

the device comprises a needle sleeve 1, a draft tube 2, a piston 3, a piston rod 4, a first rotating disc 5, a second rotating disc 6, a limiting disc 7, a limiting block 8, a bump 9, a supporting rod 10, a rotating shaft 11, a coil spring 12 and a pressing plate 13.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

The utility model provides a cardioangiography device as shown in figures 1-7, which comprises a needle sleeve 1, wherein one end of the needle sleeve 1 is provided with a flow guide pipe 2, one end of the flow guide pipe 2, which is far away from the needle sleeve 1, is provided with a needle tube, a piston 3 is slidably connected inside the needle sleeve 1, the top of the piston 3 is fixedly connected with a piston rod 4, and the outer side of the piston rod 4 is provided with a limit component;

spacing subassembly includes first carousel 5, second carousel 6, spacing dish 7, stopper 8 and lug 9, 5 threaded connection in the 4 outsides of piston rod of first carousel, 6 rotations of second carousel are connected in the 5 outsides of first carousel, 6 fixed connection in the needle cover 1 inside of second carousel, spacing dish 7 sets up in 5 bottoms of first carousel, fixedly connected with branch 10 between spacing dish 7 and the first carousel 5, 8 rotations of stopper are connected in the 7 outsides of spacing dish, lug 9 fixed connection is inside the needle cover 1,

lug

9 and 8 phase-matchs of stopper.

Further, in above-mentioned technical scheme, the spacing dish 7 outside is provided with the recess, 8 tops of stopper and the equal fixedly connected with pivot 11 in bottom, stopper 8 rotates through pivot 11 to be connected in the recess inside.

Further, in the above technical solution, a coil spring 12 is disposed outside the rotating shaft 11, and the limiting block 8 is contracted inside the groove under the acting force of the coil spring 12.

Further, in the above technical scheme, the number of the supporting rods 10 is set to be a plurality of, and the supporting rods 10 are distributed on the top of the limiting disc 7 in an annular array manner, so that the limiting disc 7 can be driven to rotate through the supporting rods 10.

Further, in the above technical solution, the outer side of the piston rod 4 is provided with an external thread, the inner wall of the first rotating disk 5 is provided with an internal thread meshed with the external thread, and the first rotating disk 5 and the second rotating disk 6 are rotatably connected through a bearing.

Further, in the above technical solution, a pressing plate 13 is fixedly connected to one end of the piston rod 4 away from the piston 3.

Further, in above-mentioned technical scheme, the quantity of recess sets up to a plurality ofly, and is a plurality of the recess is annular array and distributes in the spacing 7 outsides, and the recess is favorable to installing stopper 8.

Further, in the above technical solution, the supporting rod 10 and the protrusion 9 are both made of plastic material.

The implementation mode is specifically as follows: when the needle cannula is used, the needle cannula is inserted into an artery of a patient, the piston rod 4 is pressed through the pressing plate 13, so that the piston 3 is driven to move downwards in the needle cannula 1, a contrast medium in the needle cannula 1 can be conveyed into the artery through the draft tube 2 and the needle cannula, the piston rod 4 is in threaded connection with the first rotary disc 5, the first rotary disc 5 is in rotational connection with the second rotary disc 6 through the bearing, therefore, when the piston rod 4 moves downwards, the first rotary disc 5 can be driven to rotate, the first rotary disc 5 can drive the limiting disc 7 to rotate through the supporting rod 10, when the needle cannula is normally used, the limiting block 8 can be contracted in the groove under the action force of the coil spring 12, but when the speed of the piston rod 4 moving downwards is overlarge, the rotating speed of the limiting disc 7 is increased, the centrifugal force borne by the limiting block 8 is larger than the pulling force of the coil spring 12 on the limiting block 8, so that the limiting block 8 can rotate outwards and protrude out of the groove, and the limiting block 8 protruding out of the groove can touch the bump 9 when rotating, can block stopper 8 and continue to rotate under the spacing of lug 9, thereby can restrict spacing dish 7 and rotate, and then rotate through restriction first carousel 5 and prevent continuation of piston rod 4 to move down, can avoid with the condition of too fast speed to the inside contrast medium of carrying of artery, be favorable to restricting the speed that piston rod 4 moved down through this structure, thereby guarantee to carry the contrast medium in the safety range, higher factor of safety has in the in-service use process, therefore, the clothes hanger is strong in practicability, the problem that has the inside contrast medium of carrying to the artery among the prior art has specifically been solved to this embodiment.

This practical theory of operation:

referring to the attached drawings 1-7 in the specification, the piston 3 moves downwards in the needle sleeve 1, and the contrast medium in the needle sleeve 1 can be conveyed into an artery through the draft tube 2 and the needle tube, wherein the piston rod 4 is in threaded connection with the first rotary disc 5, so that when the piston rod 4 moves downwards, the first rotary disc 5 can drive the first rotary disc 5 to rotate, the first rotary disc 5 can drive the limiting disc 7 to rotate through the support rod 10, when the needle cannula is in normal use, the limiting block 8 can be contracted in the groove under the acting force of the coil spring 12, but when the downward movement speed of the piston rod 4 is too high, the rotating speed of the limiting disc 7 is increased, the centrifugal force applied to the limiting block 8 is larger than the pulling force applied to the limiting disc 12 by the coil spring, so that the limiting block 8 can rotate outwards and protrude out of the groove, the limiting block 8 protruding out of the groove can touch the bump 9 when rotating, and can block the limiting block 8 from continuing to rotate under the limit of the bump 9, therefore, the rotation of the limiting disc 7 can be limited, the first rotating disc 5 is further limited to rotate to prevent the piston rod 4 from moving downwards continuously, and the situation that the contrast medium is conveyed into the artery at an excessively high speed can be avoided.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.

Claims

1. A cardiography device comprising a needle sheath (1), characterized in that: a guide pipe (2) is arranged at one end of the needle sleeve (1), a needle tube is arranged at one end, away from the needle sleeve (1), of the guide pipe (2), a piston (3) is connected to the interior of the needle sleeve (1) in a sliding mode, a piston rod (4) is fixedly connected to the top of the piston (3), and a limiting assembly is arranged on the outer side of the piston rod (4);

spacing subassembly includes first carousel (5), second carousel (6), spacing dish (7), stopper (8) and lug (9), first carousel (5) threaded connection is in the piston rod (4) outside, second carousel (6) rotate to be connected in the first carousel (5) outside, second carousel (6) fixed connection is in needle cover (1) inside, spacing dish (7) set up in first carousel (5) bottom, fixedly connected with branch (10) between spacing dish (7) and first carousel (5), stopper (8) rotate to be connected in spacing dish (7) outside, lug (9) fixed connection is in needle cover (1) inside, lug (9) and stopper (8) phase-match.

2. A cardiac imaging apparatus as set forth in claim 1, wherein: the limiting disc (7) is provided with a groove in the outer side, the top and the bottom of the limiting block (8) are fixedly connected with a rotating shaft (11), and the limiting block (8) is rotatably connected to the inner portion of the groove through the rotating shaft (11).

3. A cardiac imaging apparatus as set forth in claim 2, wherein: and a coil spring (12) is arranged on the outer side of the rotating shaft (11).

4. A cardiac imaging apparatus as set forth in claim 1, wherein: the number of the supporting rods (10) is set to be a plurality of, and the supporting rods (10) are distributed on the top of the limiting disc (7) in an annular array mode.

5. A cardiac imaging apparatus as set forth in claim 1, wherein: the outer side of the piston rod (4) is provided with an external thread, the inner wall of the first rotary table (5) is provided with an internal thread meshed with the external thread, and the first rotary table (5) is rotatably connected with the second rotary table (6) through a bearing.

6. A cardiac imaging apparatus as set forth in claim 1, wherein: and a pressing plate (13) is fixedly connected to one end, far away from the piston (3), of the piston rod (4).

7. A cardiac imaging apparatus as set forth in claim 2, wherein: the quantity of recess sets up to a plurality ofly, and is a plurality of the recess is annular array and distributes in spacing dish (7) outside.

8. A cardiac imaging apparatus as set forth in claim 1, wherein: the supporting rod (10) and the lug (9) are both made of plastic materials.