CN113476681B

CN113476681B - DSA high-pressure injector and needle cylinder dismounting mechanism thereof

Info

Publication number: CN113476681B
Application number: CN202110932009.6A
Authority: CN
Inventors: 张朝正
Original assignee: Shenzhen Regtech Medical Technology Co ltd
Current assignee: Shenzhen Regtech Medical Technology Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2022-09-09
Anticipated expiration: 2041-08-13
Also published as: CN113476681A

Abstract

The invention relates to a DSA high-pressure injector and a syringe assembly and disassembly mechanism thereof, wherein the syringe assembly and disassembly mechanism of the DSA high-pressure injector comprises a bracket component; the base component is arranged on the bracket component and is provided with an accommodating cavity for installing the needle cylinder; one end of the sealing cover component is rotationally connected with the base component, the sealing cover component can rotationally open or cover the accommodating cavity, and a main limiting piece is arranged on the sealing cover component; the elastic piece is arranged on the base assembly and is abutted with the sealing cover assembly; the switch sleeve is slidably arranged on the base assembly, the switch sleeve is provided with an auxiliary limiting piece, the switch sleeve has a first position and a second position relative to the base assembly, when the switch sleeve is at the first position, the auxiliary limiting piece is positioned above the main limiting piece and is abutted against the main limiting piece, and the sealing cover assembly covers the accommodating cavity; when the cover assembly is in the second position, the auxiliary limiting part is staggered with the main limiting part, and the cover assembly rotates to open the accommodating cavity under the action of the elastic part. The needle cylinder dismounting mechanism can quickly realize the mounting and dismounting of the needle cylinder.

Description

DSA high-pressure injector and needle cylinder dismounting mechanism thereof

Technical Field

The invention relates to the technical field of medical instruments, in particular to a DSA high-pressure injector and a needle cylinder dismounting mechanism thereof.

Background

The medical DSA high-pressure injector can be used for injecting a contrast medium during angiography and can also be used for injecting the contrast medium during CT (computed tomography) contrast examination. DSA high-pressure injector is a commonly used instrument in interventional department, is simple to use, can work only by setting speed, total amount and pressure, is convenient and quick to operate by scanning with the DSA high-pressure injector, can obtain clear scanning images, and is convenient to adjust and inject due to the fact that the DSA high-pressure injector needs to be correspondingly installed by an installation structure.

The existing DSA high-pressure injector is mainly characterized in that a gate is arranged on a syringe sleeve, the gate is opened to enable the syringe to be aligned with the syringe sleeve and the bottom end of a syringe push rod to be aligned with the top end of an injection head push rod, and the gate is closed to fix the syringe, so that the whole process needs two hands to operate simultaneously, and the operation is inconvenient. There is also a direct-insertion syringe mounting method, but the whole mounting process is realized by means of a high-elasticity elliptical hoop, a bearing, a slot ring and a torsion spring, and various grooves are formed in the injection head, so that the mounting structure is complex, and the manufacturing cost is high. The existing DSA high-pressure injector mounting structure cannot be accurately positioned, has poor adjustment and mounting effects, is difficult to mount and repeatedly dismount, and cannot be repeatedly used.

Disclosure of Invention

Therefore, it is necessary to provide a DSA high-pressure injector and a syringe assembly and disassembly mechanism thereof, which can quickly mount and disassemble a syringe, in order to solve the problem that the existing DSA high-pressure injector mounting structure is difficult to mount and repeatedly disassemble the syringe.

A syringe disassembly and assembly mechanism for a DSA high pressure injector, comprising:

a bracket assembly;

the base assembly is arranged on the support assembly and is provided with an accommodating cavity for installing a needle cylinder;

one end of the sealing cover component is rotatably connected with the base component, the sealing cover component can rotatably open or cover the accommodating cavity, and a main limiting piece is arranged on the sealing cover component;

the elastic piece is arranged on the base assembly and is abutted against the cover assembly; and

the switch sleeve is slidably arranged on the base assembly, an auxiliary limiting piece is arranged on the switch sleeve, the switch sleeve has a first position and a second position relative to the base assembly, the auxiliary limiting piece is positioned above the main limiting piece and is abutted against the main limiting piece in the first position, and the cover sealing assembly covers the accommodating cavity; when the cover assembly is in the second position, the auxiliary limiting part and the main limiting part are staggered, and the cover assembly rotates to open the accommodating cavity under the action force of the elastic part.

In the needle cylinder dismounting mechanism of the DSA high-pressure injector, when the needle cylinder is in a mounted state, the main limiting piece on the sealing cover assembly is blocked by the auxiliary limiting piece on the switch sleeve, so that the sealing cover assembly is covered on the accommodating cavity of the base assembly; when the needle cylinder is in a disassembled state, the switch sleeve slides relative to the base assembly, the position of the auxiliary limiting part is staggered with that of the main limiting part, at the moment, the sealing cover assembly does not have the blocking of the switch sleeve, the sealing cover assembly can rotate relative to the base assembly under the elastic acting force of the elastic part, and the sealing cover assembly opens the accommodating cavity of the base assembly. The needle cylinder dismounting mechanism of the DSA high-pressure injector can quickly realize the mounting and dismounting of the needle cylinder.

In one embodiment, the base assembly is provided with a guide belt along the length direction, and the switch sleeve is in sliding fit with the guide belt. The setting of guidance tape can make the switch cover to when sliding for the base subassembly, more smooth and easy.

In one embodiment, the main limiting member is a convex pillar disposed on an outer side of the cover assembly, and the auxiliary limiting member is a flange disposed on an inner side of the switch sleeve.

In one embodiment, the outer side of the base assembly and the outer side of the cover assembly are spaced to form a step, the inner side of the switch sleeve is provided with a sliding strip along the length direction, and the sliding strip is in sliding fit with the step. The setting of step can make the sliding fit setting of switch cover and base subassembly, and is convenient, reasonable more.

In one embodiment, the sliding bar is spaced from the secondary limiting element, and in the first position, the primary limiting element is located between the sliding bar and the secondary limiting element.

In one embodiment, the method comprises the following steps: the plurality of convex columns are arranged at intervals along the length direction of the sealing cover assembly, and the plurality of flanges are arranged at intervals along the length direction of the switch sleeve; and/or the opposite outer sides of the sealing cover components are provided with convex columns, and the opposite inner sides of the switch sleeves are provided with flanges; and/or one side of the flange, which is far away from the bracket component, is provided with a first inclined plane extending towards the rotation end of the sealing cover component in an inclined way, one side of the convex column, which is close to the bracket component, is provided with a second inclined plane matched with the first inclined plane, and when the convex column is at a second position, the second inclined plane is in sliding fit with the first inclined plane, so that the sealing cover component is opened relative to the base component in a rotating way.

In one embodiment, the method comprises the following steps: the needle cylinder dismounting mechanism further comprises an elastic resetting component, the elastic resetting component is arranged on the base component and is linked with the switch sleeve, and when the switch sleeve moves from the first position to the second position, the elastic resetting component is compressed; and/or the needle cylinder dismounting mechanism further comprises an opening and closing induction component, wherein the opening and closing induction component is arranged in the base component and is used for detecting the opening and closing state of the sealing cover component; and/or the needle cylinder dismounting mechanism further comprises a temperature sensor arranged in the base component, and the temperature sensor is used for detecting the temperature of the needle cylinder; and/or the needle cylinder dismounting and mounting mechanism further comprises a heating sheet arranged in the accommodating cavity, and the heating sheet is used for heating the needle cylinder.

In one embodiment, the syringe disassembly and assembly mechanism further comprises an ejection mechanism disposed within the base assembly and having a drive end capable of resiliently protruding into the receiving cavity. When the needle cylinder is in a disassembly state, the sealing cover component can rotate relative to the base component under the elastic acting force of the elastic piece, and meanwhile, the ejecting mechanism can stretch into the accommodating cavity to eject the needle cylinder from the accommodating cavity, so that the disassembly effect of the needle cylinder is further improved.

In one embodiment, the ejection mechanism includes an elastic block, a limiting rod and a spring, the elastic block is movably disposed in the base assembly and can move into the accommodating cavity, the limiting rod penetrates through the elastic block along the movement direction of the elastic block and is fixedly disposed in the base assembly, and the spring is abutted to the elastic block and the base assembly respectively.

The invention also provides a DSA high pressure syringe, comprising: the syringe assembly and disassembly mechanism of the DSA high-pressure injector; the needle cylinder is arranged in the accommodating cavity; the piston is arranged in the needle cylinder in a sliding manner; and the injection driving piece is arranged on the bracket component and is linked with the piston.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a syringe attachment/detachment mechanism of the present invention;

FIG. 2 is a schematic view showing the open state of the cap assembly of the syringe attachment and detachment mechanism shown in FIG. 1;

FIG. 3 is a schematic view of a portion of the switch housing of the present invention in a first state;

FIG. 4 is a schematic view of a portion of the switch housing of the present invention in a second state;

FIG. 5 is an enlarged view of a portion A of FIG. 3;

FIG. 6 is an exploded view of the syringe mounting/dismounting mechanism of the present invention;

FIG. 7 is another exploded view of the syringe mounting/dismounting mechanism of the present invention;

figure 8 is a schematic structural view of an embodiment of the DSA high pressure injector of the present invention;

figure 9 is a cross-sectional view of the DSA high pressure syringe of figure 8.

In the drawings, the reference numbers indicate the following list of parts:

100. a syringe dismounting mechanism of the DSA high-pressure injector; 1. a bracket assembly; 2. a base assembly; 21. an accommodating chamber; 22. a guide belt; 23. a step; 3. a closure assembly; 31. a main limiting member; 311. a second inclined plane; 32. a syringe cap body; 33. a syringe cover protection pad; 4. an elastic member; 5. a switch cover; 51. an auxiliary limit piece; 511. a first inclined plane; 52. a slide bar; 53. a sliding groove; 6. an elastic reset component; 61. resetting the slide block; 62. resetting the pin; 63. a return spring; 64. a slider cover; 7. an opening and closing induction component; 8. a temperature sensor; 9. a heating plate; 10. an ejection mechanism; 101. a spring block; 102. a limiting rod; 103. a spring; 20. a rotating shaft; 300. a DSA high pressure injector; 301. a needle cylinder; 302. a piston; 3021. a push rod; 303. the driver is injected.

Detailed Description

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is apparent that the specific details set forth in the following description are merely exemplary of the invention, which can be practiced in many other embodiments that depart from the specific details disclosed herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without any inventive step, are within the scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a single embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and 2, in one embodiment, a syringe assembly and disassembly mechanism 100 for a DSA high pressure injector includes: bracket component 1, base component 2, closing component 3, elastic component 4 and switch cover 5. The base component 2 is arranged on the bracket component 1, and the base component 2 is provided with an accommodating cavity 21 for installing a needle cylinder. One end of the cover component 3 is rotatably connected with the base component 2, the cover component 3 can be rotatably opened or covered to accommodate the cavity 21, and the cover component 3 is provided with a main limiting part 31. The elastic element 4 is arranged on the base assembly 2, and the elastic element 4 is abutted with the cover assembly 3. The switch sleeve 5 is slidably disposed on the base assembly 2 along the length direction of the base assembly 2, and the switch sleeve 5 is provided with an auxiliary limiting member 51. The switch sleeve 5 has a first position and a second position relative to the base assembly 2, referring to fig. 3, in the first position, the auxiliary limiting member 51 is located above the main limiting member 31 and abuts against the main limiting member 31, and the cover assembly 3 covers the accommodating cavity 21; referring to fig. 4, in the second position, the secondary limiting member 51 is staggered from the primary limiting member 31, and the cover assembly 3 rotates to open the accommodating cavity 21 under the action of the elastic member 4.

Referring to fig. 3, in the syringe assembling and disassembling mechanism 100 of the DSA high-pressure syringe, when the syringe is in the mounted state, the secondary limiting member 51 on the switch sleeve 5 blocks the primary limiting member 31 on the cover assembly 3, so that the cover assembly 3 covers the accommodating cavity 21 of the base assembly 2; referring to fig. 4, in the disassembled state of the syringe, the switch sleeve 5 slides relative to the base assembly 2, and the position of the secondary limiting member 51 is staggered from that of the primary limiting member 31, at this time, since the cover assembly 3 is not blocked by the switch sleeve 5, the cover assembly 3 can rotate relative to the base assembly 2 under the elastic force of the elastic member 4, and the cover assembly 3 opens the accommodating cavity 21 of the base assembly 2. The syringe disassembly and assembly mechanism 100 of the DSA high-pressure injector can quickly realize the assembly and disassembly of the syringe.

The resilient member 4 may be a ball which is self-threadedly mounted on the end of the base assembly 2.

Referring to fig. 2 and 5, in one embodiment, the main limiting member 31 is a convex pillar disposed on the outer side of the cover assembly 3, and the auxiliary limiting member 51 is a flange disposed on the inner side of the switch sleeve 5. The stud and flange can form a simple and effective abutment stop, and a separate disengaging fit.

Referring to fig. 6, in order to make the switch sheath 5 slide smoothly relative to the base assembly 2, the base assembly 2 is provided with a guide belt 22 along the length direction, and the switch sheath 5 is in sliding fit with the guide belt 22.

Referring to fig. 1, in order to make the sliding fit arrangement of the switch sleeve 5 and the base assembly 2 more convenient and reasonable, a step 23 is formed between the outer side of the base assembly 2 and the outer side of the cover assembly 3 at an interval, a sliding strip 52 is arranged on the inner side of the switch sleeve 5 along the length direction, and the sliding strip 52 is in sliding fit with the step 23. The slide bar 52 and the auxiliary limiting member 51 are vertically spaced from each other in the thickness direction of the switch cover 5, and in the syringe installation state, the main limiting member 31 is located between the slide bar 52 and the auxiliary limiting member 51. When the switch cover 5 slides relative to the base assembly 2, the main stopper 31 moves from a position abutting against the sub stopper 51 to a position shifted from the sub stopper 51 between the slide bar 52 and the sub stopper 51.

Furthermore, the main body seat of the base component 2 is semicircular, the switch sleeve 5 is also semicircular, and the inner side surface of the semicircular switch sleeve 5 is in sliding fit with the outer side surface of the main body seat of the semicircular base component 2.

Referring to fig. 7, in order to ensure the sliding stroke of the switch sleeve 5 relative to the base assembly 2, a sliding groove 53 is formed on the inner side of the switch sleeve 5 in a length direction, a limit screw is arranged on the inner side of the base assembly 2, the limit screw penetrates through the base assembly 2 and is inserted into the sliding groove 53 of the switch sleeve 5, and the sliding stroke of the switch sleeve 5 is controlled by the length of the sliding groove 53.

Referring to fig. 2, in a specific operation mode, a plurality of protruding columns are arranged along the length direction of the cover assembly 3 at intervals, and a plurality of flanges are arranged along the length direction of the switch sleeve 5 at intervals, so as to form more stable abutting blocking and sliding staggered matching. Furthermore, the opposite outer sides of the sealing cover component 3 are provided with convex columns, and the opposite inner sides of the switch sleeve 5 are provided with flanges. When the syringe is in a disassembled state, one convex column slides out from the gap between the two flanges.

Referring to fig. 5, in another embodiment, a side of the flange away from the bracket assembly 1 is provided with a first inclined surface 511 extending obliquely toward the rotation end of the cover assembly 3. One side of the convex column close to the bracket assembly 1 is provided with a second inclined surface 311 matched with the first inclined surface 511. In the syringe-removed state, the second inclined surface 311 and the first inclined surface 511 are slidably engaged to allow the cover assembly 3 to be rotated open with respect to the base assembly 2. Because the cover assembly 3 can rotate relative to the base assembly 2 to open, a certain rotation angle is generated, and the first inclined surface 511 on the flange and the second inclined surface 311 on the convex column can play a guiding fit during rotation.

Referring to figures 6 and 7, in a further embodiment, the syringe mounting and dismounting mechanism further comprises an elastic return assembly 6. The elastic reset component 6 is arranged on the base component 2, the elastic reset component 6 is linked with the switch sleeve 5, the switch sleeve 5 slides relative to the base component 2, and when the cover sealing component 3 is opened, the elastic reset component 6 is compressed. When the syringe is removed from the accommodating cavity 21, the switch sleeve 5 will return automatically under the elastic restoring force of the elastic restoring component 6.

In a particular mode of operation, the elastic return assembly 6 comprises a return slider 61, a return pin 62, a return spring 63 and a slider cover 64. The reset sliding block 61 is installed in the base assembly 2, one end of the reset pin 62 is inserted into the reset sliding block 61, the other end of the reset pin 62 penetrates through the base assembly 2 and is inserted into the pin hole in the inner side of the switch sleeve 5, and the reset sliding block 61 and the switch sleeve 5 can be connected through the reset pin 62 to move together. The base assembly 2 is provided with a spring groove along the length direction, the return spring 63 is installed in the spring groove, and the return spring 63 abuts against the return sliding block 61.

When the switch cover 5 slides, the reset sliding block 61 can be driven to move to abut against the reset spring 63, so that the reset spring 63 is compressed, and after the needle cylinder is dismounted, the reset sliding block 61 and the switch cover 5 can be driven to reset through the elastic restoring force of the reset spring 63. The slide cover 64 fixes the return slide 61, the return pin 62, and the return spring 63 to the base assembly 2.

Referring to fig. 6, the syringe mounting/dismounting mechanism further includes an opening/closing sensing assembly 7, a temperature sensor 8, and a heating plate 9. The opening and closing sensing component 7 is arranged in the base component 2 and used for detecting the opening and closing states of the cover sealing component 3 and the base component 2, and a first waterproof soft rubber cushion is further arranged on the surface of the opening and closing sensing component 7. Temperature-sensing ware 8 is located in base subassembly 2, and is used for detecting the temperature of cylinder, and temperature-sensing ware 8 still installs the waterproof soft cushion of second on the surface. The heating plate 9 is arranged in the accommodating cavity 21 and is used for heating the syringe.

Referring to fig. 6 and 7, in another embodiment, the syringe mounting and dismounting mechanism further includes an ejection mechanism 10. The ejecting mechanism 10 is disposed in the base assembly 2, and the ejecting mechanism 10 has a driving end capable of elastically protruding into the accommodating cavity 21. When the needle cylinder is in a disassembled state, the sealing cover component 3 can rotate relative to the base component 2 under the elastic acting force of the elastic component 4, meanwhile, the ejecting mechanism 10 can stretch into the accommodating cavity 21 to eject the needle cylinder from the accommodating cavity 21, and the needle cylinder disassembling effect is further improved.

In addition to the above embodiments, the eject mechanism 10 includes the elastic piece 101, the stopper rod 102, and the spring 103. The elastic block 101 is movably disposed in the base assembly 2 and can move into the accommodating cavity 21. The limiting rod 102 penetrates through the elastic block 101 along the moving direction of the elastic block 101 and is fixedly arranged in the base component 2. The spring 103 abuts against the spring block 101 and the base unit 2, respectively. In the mounted state of the syringe, the spring block 101 is pressed downward by the syringe, and is accommodated in the base unit 2, and the spring 103 is compressed. When the needle cylinder is detached, the cover sealing component 3 rotates to open without pressing the needle cylinder, the spring 103 recovers elastic deformation, the elastic block 101 is pushed into the accommodating cavity 21, the elastic block 101 moves along the limiting rod 102, and the needle cylinder is ejected out of the accommodating cavity 21.

Referring to fig. 6, in an embodiment of the cover assembly 3, the cover assembly 3 includes a syringe cover main body 32 and a syringe cover protection pad 33, and the syringe cover protection pad 33 is disposed on an inner side surface of the syringe cover main body 32. The syringe cover main body 32 is formed by splicing three syringe plates, the syringe plates on two sides are stainless steel plates, the use strength and the service life can be guaranteed, the syringe plate in the middle is a transparent plastic plate, and the real-time state of the syringe can be observed through the syringe plates.

One end of the syringe cover main body 32 is connected with the base assembly 2 through the rotation of the rotating shaft 20 and the rotating shaft damping, specifically, the rotating shaft 20 is provided with two rotating shafts, the rotating shaft damping is provided with two rotating shafts 20, the two rotating shafts 20 are respectively arranged on two opposite sides of the base assembly 2, and the rotating shafts 20 correspondingly penetrate through the syringe cover main body 32 and the rotating shaft damping and are in threaded connection with the base assembly 2. A syringe cover protection pad 33 is stuck to a covering surface of the syringe cover main body 32 facing the base unit 2.

Referring to fig. 8 and 9, in another embodiment, a DSA high pressure injector 300 includes: the syringe disassembly and assembly mechanism 100, syringe 301, piston 302 and injection drive member 303 of a DSA high pressure injector as described above. The cylinder 301 is disposed in the accommodating chamber 21. A piston 302 is slidably disposed within the barrel 301. The injection driver 303 is disposed on the carriage assembly 1, and the injection driver 303 is linked with the piston 302.

In a specific embodiment, the injection driver 303 includes a push rod 3021, a boss is disposed at an end of the push rod 3021, a T-shaped groove is disposed on the piston 302, and the boss of the push rod 3021 can be clamped and fixed with the T-shaped groove of the piston 302.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes, substitutions and alterations can be made by those skilled in the art without departing from the spirit of the invention, and these are all intended to be covered by the scope of the invention. Therefore, the protection scope of the present invention should be subject to the claims.

Claims

1. A syringe disassembly and assembly mechanism of a DSA high-pressure injector is characterized by comprising:

a bracket assembly;

the base component is arranged on the bracket component and is provided with an accommodating cavity for installing a needle cylinder;

2. The syringe disassembly and assembly mechanism for a DSA high pressure syringe of claim 1 wherein the base assembly is provided with a guide strip along its length, the switch housing being in sliding engagement with the guide strip.

3. The syringe disassembly and assembly mechanism for a DSA high pressure syringe of claim 1, wherein the primary stop is a boss provided on the outside of the closure assembly and the secondary stop is a flange provided on the inside of the switch housing.

4. The syringe disassembly and assembly mechanism for a DSA high pressure syringe of claim 3, wherein the outer side of the base assembly is spaced from the outer side of the cover assembly to form a step, and the inner side of the switch sleeve is provided with a sliding strip along the length direction, and the sliding strip is in sliding fit with the step.

5. The syringe disassembly and assembly mechanism for a DSA high pressure injector of claim 4, wherein the slider is spaced from the secondary stop and in the first position the primary stop is located between the slider and the secondary stop.

6. The syringe disassembly and assembly mechanism for a DSA high pressure injector of claim 3, comprising:

the plurality of convex columns are arranged at intervals along the length direction of the sealing cover assembly, and the plurality of flanges are arranged at intervals along the length direction of the switch sleeve; and/or

The opposite outer sides of the sealing cover components are provided with convex columns, and the opposite inner sides of the switch sleeves are provided with flanges; and/or

One side of the flange, which is far away from the bracket component, is provided with a first inclined plane extending towards the rotating end of the cover component in an inclined manner, one side of the convex column, which is close to the bracket component, is provided with a second inclined plane matched with the first inclined plane, and when the convex column is in a second position, the second inclined plane is in sliding fit with the first inclined plane, so that the cover component is opened relative to the base component in a rotating manner.

7. The syringe disassembly and assembly mechanism for a DSA high pressure injector of claim 1, comprising:

the needle cylinder dismounting mechanism further comprises an elastic resetting component, the elastic resetting component is arranged on the base component and is linked with the switch sleeve, and when the switch sleeve moves from the first position to the second position, the elastic resetting component is compressed; and/or

The needle cylinder disassembling and assembling mechanism further comprises an opening and closing induction component, and the opening and closing induction component is arranged in the base component and used for detecting the opening and closing state of the sealing cover component; and/or

The needle cylinder dismounting mechanism also comprises a temperature sensor arranged in the base component, and the temperature sensor is used for detecting the temperature of the needle cylinder; and/or

The needle cylinder dismounting mechanism further comprises a heating sheet arranged in the accommodating cavity, and the heating sheet is used for heating the needle cylinder.

8. The syringe disassembly and assembly mechanism of a DSA high pressure injector of claim 1 further comprising an ejection mechanism disposed within the base assembly, the ejection mechanism having a driving end capable of resiliently protruding into the receiving cavity.

9. The syringe disassembly and assembly mechanism for a DSA high pressure injector of claim 8, wherein the ejection mechanism comprises a spring block, a limiting rod and a spring, the spring block is movably arranged in the base assembly and can move into the containing cavity, the limiting rod passes through the spring block along the movement direction of the spring block and is fixedly arranged in the base assembly, and the spring is respectively abutted against the spring block and the base assembly.

10. A DSA high pressure syringe, comprising: the syringe disassembly and assembly mechanism of the DSA high pressure injector of any of claims 1 to 9;

the needle cylinder is arranged in the accommodating cavity;

the piston is arranged in the needle cylinder in a sliding manner; and

and the injection driving part is arranged on the bracket component and is linked with the piston.