Needle cylinder hook mechanism and high-pressure injector assembly
By designing the telescopic limiting part and detection module in the syringe hook mechanism, automatic assembly of the high-pressure syringe is realized, the problem of manual operation in the prior art is solved, and assembly efficiency and safety are improved.
Patent Information
- Application Number
- CN202421475301.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-08-05
- Estimated Expiration
- 2034-06-25
AI Technical Summary
Existing high-pressure syringes cannot automatically complete the assembly of the recoverable and unrecoverable piston hook syringes, and require manual operation by medical staff.
A syringe hook mechanism is designed, including a sheath, push rod and a limiting part, which can be retracted to avoid protrusions at the opening of the piston hook, and automatically assembled through the bevel and elastic parts, and ensure stable connections in combination with the detection module.
Automatic assembly of recoverable and non-recoverable piston hook syringes is realized, reducing the operating steps of medical staff and improving assembly efficiency and safety.
Smart Images
Figure CN223183855U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-pressure syringes, in particular to a syringe hook mechanism and a high-pressure syringe component. Background Art
[0002] As an auxiliary equipment in the radiological diagnosis and treatment system, the high-pressure injector has been gradually used in clinical practice with the development of technologies such as X-rays, rapid film changers, image intensifiers and artificial contrast agents. The function of the high-pressure injector is to quickly and accurately inject a sufficient amount of contrast agent, saline or other liquid into the examination site through percutaneous puncture into the blood vessels or through the original channels of the human body within a certain period of time, so as to perform diagnostic imaging and treatment of the lesion site.
[0003] The syringes used for high-pressure syringe contrast agents can be divided into recoverable deformable piston hook syringes and irreversible piston hook syringes. The existing high-pressure syringes with automatic syringe assembly can be used with corresponding models of recoverable piston hook syringes, so that the recoverable piston hook syringes can automatically complete the assembly work. The high-pressure syringes with automatic syringe assembly can also be used with irreversible deformable piston hook syringes, but the medical staff needs to manually operate to complete the assembly work, and the syringe assembly work cannot be completed automatically. Utility Model Content
[0004] The main purpose of the utility model is to propose a syringe hook mechanism and a high-pressure syringe assembly, which aims to enable both the recoverable piston hook syringe and the irreversible piston hook syringe to automatically assemble the syringe, so that medical personnel do not need to manually operate the assembly syringe.
[0005] To achieve the above-mentioned purpose, the needle cylinder hook mechanism proposed in the present invention includes:
[0006] jacket;
[0007] a push rod movably disposed on the sheath, and having a connecting portion located outside the sheath, the connecting portion being used to connect with the piston hook; and
[0008] At least two limiting parts are provided, and at least two limiting parts are provided on the peripheral side of the connecting part, and the limiting parts are retractably provided so as to shrink toward the connecting part when the push rod moves toward the piston hook, thereby avoiding the protrusion at the opening of the piston hook.
[0009] Preferably, at least two of the limiting portions are provided with an inclined surface on one side facing the piston hook, and the inclined surface is used to assist the limiting portion in avoiding the protrusion at the opening of the piston hook.
[0010] Preferably, the limiting portion has a first side and a second side in its movable direction, the inclined surface is located on the second side of the limiting portion, and the inclined surface is inclined toward the second side, and the end of the inclined surface away from the first side is close to the connecting portion, and the angle between the inclined surface and the outer peripheral side of the connecting portion is at least thirty degrees and at most sixty degrees.
[0011] Preferably, the limiting portion includes:
[0012] an elastic member, the elastic member being disposed in the connecting portion and extending toward an outer peripheral side of the connecting portion;
[0013] The limiting member is arranged on the elastic member, and the inclined surface is arranged on the limiting member. The limiting member moves toward the outer peripheral side of the connecting portion along with the elastic member, so that the limiting portion can be telescopically moved on the connecting portion.
[0014] Preferably, a positioning groove for the movement of the limiting member is formed on the connecting portion, and the positioning groove extends toward the outer peripheral side of the connecting portion, so that the movement direction of the limiting member is limited by the limiting hole.
[0015] Preferably, a limiting block is provided in the connecting portion, the limiting block is provided on the limiting piece, a limiting groove is provided in the connecting portion for sliding connection of the limiting block, and the limiting block and the limiting groove are used to prevent the limiting piece from detaching from the connecting portion.
[0016] Preferably, a detection module is provided on the push rod, and the detection module is used to detect the distance between the push rod and the piston hook.
[0017] Preferably, the detection module is electrically connected to a control module, the control module is electrically connected to a driving device, the driving device is drivingly connected to the push rod, and the driving device drives the push rod to move.
[0018] The present invention also proposes a high-pressure syringe assembly, including a piston hook, a piston member, a syringe and a syringe hook mechanism, wherein the syringe hook mechanism includes a sheath, a push rod and at least two limiting parts, the push rod is movably arranged on the sheath, and the push rod has a connecting part located outside the sheath, the connecting part is used to connect with the piston hook, at least two of the limiting parts are arranged on the peripheral side of the connecting part, and the limiting parts are telescopically arranged so that when the push rod moves toward the piston hook, it shrinks toward the connecting part to avoid the protrusion at the opening of the piston hook, the piston hook is arranged on the outer peripheral side of the connecting part, the piston member is arranged on the piston hook, and the piston member is located on the side of the piston hook away from the push rod, and the syringe is movably arranged on the outside of the piston member.
[0019] Preferably, the piston hook is made of elastic material or rigid material.
[0020] In the technical solution provided by the present invention, at least two of the limiting parts are arranged on the peripheral side of the connecting part, and the limiting parts are retractable so that when the push rod moves toward the piston hook, they are retracted toward the connecting part to avoid the protrusion at the opening of the piston hook. The limiting parts prevent the piston hook from being separated from the push rod after the push rod is connected to the piston hook. At the same time, the retractable limiting parts adapt to different piston hooks by retracting into the connecting part. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.
[0022] Figure 1 A three-dimensional schematic diagram of an embodiment of a syringe hook mechanism and a high-pressure syringe assembly provided by the utility model;
[0023] Figure 2 for Figure 1 A cross-sectional schematic diagram;
[0024] Figure 3 for Figure 2 A magnified schematic diagram of part A in the figure.
[0025] Description of Figure Numbers:
[0026] 1. Sheath; 2. Push rod; 3. Limiting part; 31. Elastic part; 32. Limiting part; 4. Detection module.
[0027] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0029] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.
[0030] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0031] The utility model provides a syringe hook mechanism and a high-pressure syringe assembly. Figures 1 to 3 This is an embodiment of the syringe hook mechanism and high-pressure syringe assembly provided by the utility model.
[0032] Please also refer to Figures 1 to 3 The syringe hook mechanism includes a piston, a syringe and a syringe hook mechanism, and the syringe hook mechanism includes a sheath 1, a push rod 2 and at least two limiting parts 3. The push rod 2 is movably arranged on the sheath 1, and the push rod 2 has a connecting part located outside the sheath 1, and the connecting part is used to connect with the piston hook. At least two limiting parts 3 are arranged on the circumferential side of the connecting part, and the limiting part 3 is retractably arranged so that when the push rod 2 moves toward the piston hook, it contracts toward the connecting part to avoid the protrusion at the opening of the piston hook.
[0033] After the push rod 2 moves toward the piston hook until the limit part 3 contacts the piston hook, the push rod 2 continues to move toward the piston hook, so that the connecting part on the push rod 2 enters the piston hook. Before the connecting part enters the piston hook, the limit part 3 retracts toward the connecting part, so that the push rod 2 no longer contacts the piston hook, and then the push rod 2 can continue to move toward the piston hook, and the connecting part enters the piston hook. After the connecting part enters the piston hook, the limit part 3 extends in the direction away from the connecting part, thereby contacting the protrusion at the opening of the piston hook. The protrusion at the opening of the piston hook blocks the limit part 3, so that the limit part 3 cannot be separated from the piston hook along with the connecting part, thereby completing the connection between the push rod 2 and the piston hook.
[0034] Therefore, in the technical solution provided by the present invention, at least two of the limiting parts 3 are arranged on the peripheral side of the connecting part, and the limiting part 3 is retractable, so that when the push rod 2 moves toward the piston hook, it shrinks toward the connecting part to avoid the protrusion at the opening of the piston hook. Through the limiting part 3, after the push rod 2 is connected to the piston hook, the piston hook cannot be separated from the push rod 2. At the same time, the retractable limiting part 3 adapts to different piston hooks by shrinking into the connecting part.
[0035] In order to enable the push rod 2 to automatically complete the connection with the piston hook when it moves toward the piston hook, the limiting part 3 needs to be released from the piston hook and retracted toward the connecting part. Therefore, at least two of the limiting parts 3 are provided with a slope on the side facing the piston hook, and the slope is used to assist the limiting part 3 to avoid the protrusion at the opening of the piston hook.
[0036] By arranging an inclined surface on the limiting part 3, when the limiting part 3 contacts the piston hook, the piston hook can push the limiting part 3 toward the connecting part along the inclined surface, thereby causing the limiting part 3 to automatically shrink toward the connecting part. Not only can an inclined surface be arranged on the limiting part 3 so that the limiting part 3 can be pushed toward the connecting part by the piston hook as the connecting part moves toward the piston hook, but an arcuate surface can also be arranged on the limiting part 3 so that the limiting part 3 can be pushed toward the connecting part by the piston hook as the connecting part moves toward the piston hook. During the movement of the connecting part, the protrusion at the opening of the piston hook will gradually push the limiting part 3 toward the connecting part along the arc of the limiting part 3, thereby causing the limiting part 3 to automatically complete the shrinkage work. Therefore, not only an inclined surface but also an arcuate surface can be arranged on the limiting part 3.
[0037] In order for the protrusion at the opening of the piston hook to be able to push the limiting part 3 toward the connecting part along the inclined surface when the limiting part 3 moves toward the piston hook, the inclination direction of the inclined surface needs to be restricted. Specifically, in an embodiment of the present invention, the limiting part 3 has a first side and a second side in its moving direction, the inclined surface is located on the second side of the limiting part 3, and the inclined surface is inclined toward the second side. The end of the inclined surface away from the first side is arranged close to the connecting part, and the angle between the inclined surface and the outer peripheral side of the connecting part is at least thirty degrees and at most sixty degrees.
[0038] By limiting the orientation and inclination direction of the inclined surface, the limiting portion 3 can contact the protrusion at the opening of the piston hook as the connecting portion moves toward the piston hook. At the same time, the contact of the protrusion at the opening of the piston hook can push the limiting portion 3 toward the connecting portion along the inclined surface, so that the limiting portion 3 automatically completes the contraction, thereby allowing the push rod 2 to automatically complete the connection work.
[0039] After the limiting part 3 shrinks toward the connecting part, it needs to automatically extend in the direction away from the connecting part after the connecting part enters the piston hook, thereby limiting the connecting part so that the connecting part cannot move away from the piston hook, so that the push rod 2 is separated from the piston hook. Therefore, the limiting part 3 includes an elastic part 31 and a limiting part 32. The elastic part 31 is arranged in the connecting part, and the elastic part 31 extends toward the outer peripheral side of the connecting part. The limiting part 32 is arranged on the elastic part 31, and the inclined surface is arranged on the limiting part 32. The limiting part 32 moves toward the outer peripheral side of the connecting part with the elastic part 31, so that the limiting part 3 can telescope on the connecting part.
[0040] The elastic member 31 drives the limiting member 32 to move, so that the limiting member 32 can retract toward the connection after being pushed by the protrusion at the opening of the piston hook, and can extend in the direction away from the connection part after losing the pushing force toward the connection part. When the limiting member 32 is pushed, the elastic member 31 is compressed to complete the contraction action. After the limiting member 32 loses the pushing force, the elastic member 31 completes the extension action away from the connection part through the rebound force, so that the limiting part 3 can automatically complete the limiting work.
[0041] The elastic member 31 is a retractable structural member, so the elastic member 31 can be set as a compression spring, which extends toward the outer peripheral side of the connecting part, and the connection between the compression spring and the limit member 32 is located inside the connecting part, so that the limit member 32 will not swing toward the side of the limit member 32 when driven by external force, and can only move toward the extension direction of the compression spring, so that the limit member 32 is aligned with the protrusion at the opening of the piston hook, and at the same time, the limit member 32 remains extended from the connecting part in the absence of external force.
[0042] Furthermore, a positioning groove for the limiting member 32 to move is provided on the connecting portion, and the positioning groove extends toward the outer peripheral side of the connecting portion, so that the limiting hole limits the moving direction of the limiting member 32 .
[0043] By providing a positioning groove for the sliding of the limit member 32 on the connecting portion, the direction of extension and contraction of the limit member 32 is restricted, thereby preventing the limit member 32 from being restricted in the direction of extension and contraction due to force, and moving in a direction deviating from the piston hook, thereby making it impossible for the limit portion 3 to contact the protrusion at the opening of the piston hook, resulting in the limit portion 3 being unable to complete the automatic contraction work under the push of the protrusion at the opening of the piston hook. It may also be possible that when the connecting portion moves away from the piston hook, no restriction can be formed because the limit portion 3 does not contact the protrusion at the opening of the piston hook, resulting in an unstable connection between the push rod 2 and the piston hook, thereby causing the push rod 2 to separate from the piston hook during movement.
[0044] Furthermore, a limiting block is provided in the connecting portion, and the limiting block is provided on the limiting member 32. A limiting groove is provided in the connecting portion for the limiting block to be slidably connected. The limiting block and the limiting groove are used to prevent the limiting member 32 from detaching from the connecting portion.
[0045] The cooperation of the limit block and the limit groove limits the moving distance of the limit member 32, so that the limit member 32 cannot move to the outside of the connection part when extending in the direction away from the connection part, thereby avoiding the limit member 32 being blocked by the outer peripheral side of the connection part when retracting and unable to retract into the connection part to remove the obstruction of the protrusion at the opening of the piston hook, so that the push rod 2 can successfully complete the automatic connection with the piston hook.
[0046] After the push rod 2 is connected to the piston hook, it needs to stop moving toward the piston hook. Therefore, a detection module 4 is provided on the push rod 2. The detection module 4 is used to detect the distance between the push rod 2 and the piston hook.
[0047] The detection module 4 is used to detect when the push rod 2 and the piston hook have completed the connection work. For example, when the push rod is manually pushed toward the piston hook, a top cap that can move away from or close to the detection module 4 is set in the connection part. At the same time, the top cap passes through the connection part and contacts the piston hook after the connection part enters the piston hook. When the piston hook and the push rod 2 are connected, the top cap moves toward the detection module 4 and contacts the detection module 4, so that the detection module 4 detects that the push rod 2 and the piston hook have completed the connection work, and then the detection module 4 prompts the person who pushes the push rod that the push rod and the piston hook are connected by making a sound or lighting up a light. The sound emitted needs to be loud enough to avoid interference from external noise, and the light color needs to be more conspicuous to avoid unclear vision for users.
[0048] Furthermore, the detection module 4 is electrically connected to the control module, the control module is electrically connected to the driving device, the driving device is drivingly connected to the push rod 2, and the driving device drives the push rod 2 to move.
[0049] After detecting that the push rod 2 and the piston hook are connected, the detection module 4 will transmit a signal to the control module. At the same time, the control module will turn off the drive device so that the drive device no longer drives the push rod 2 to move. If the detection module 4 does not receive the signal that the connection is completed during the connection process, the control module will control the push rod 2 to continue moving toward the piston hook until the connection is completed.
[0050] The electrical components appearing in the text are all electrically connected to the main controller and the power supply, and the electrical components appearing in the text are all conventionally known devices. This application will not go into too much detail. The main controller can be a conventionally known device that controls a computer, etc. The control circuit of the main controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field, and this application is mainly used to protect mechanical devices, so this application will no longer explain the control method and circuit connection in detail.
[0051] The present invention also proposes a high-pressure syringe assembly, including a piston hook, a piston member, a syringe and a syringe hook mechanism. The specific structure of the syringe hook mechanism refers to the above-mentioned embodiment. The piston hook is arranged on the outer peripheral side of the connecting portion, and the piston member is arranged on the piston hook, and the piston member is located on the side of the piston hook away from the push rod. The syringe is movably arranged on the outside of the piston member, and the piston member is tightly fitted with the inner circumferential wall of the syringe. After the push rod 2 is connected to the piston hook, the piston hook can be driven to move by pushing the push rod 2, and then the piston member is driven to move in the syringe through the piston hook, thereby realizing the two actions of injection and extraction. Since this high-pressure syringe assembly adopts all the technical solutions of the above-mentioned embodiments, it also has all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here.
[0052] The piston hook has two types of hook claws, movable and immovable. Specifically, in the technical solution of the present utility model, the hook claws of the piston hook have a recoverable deformation structure and an irreversible deformation structure.
[0053] When the piston hook is a recoverable deformation structure, the claw of the piston hook can move in the direction away from the limit member 32 when pushed by the limit member 32, so that the opening of the piston hook is opened. When the opening of the piston hook is opened, the connecting part of the push rod 2 can be used to carry the limit member 32 into the piston hook, and after the connecting part is completely entered into the piston hook, the claw of the piston hook moves toward the initial position until the piston hook is restored to the initial state to complete the connection with the push rod 2. When the piston hook is an irreversible deformation structure, the claw of the piston hook will not move in the direction away from the limit member 32 when pushed by the limit member 32. Therefore, it is necessary to set the limit part 3 to be telescopic, so that the limit part 3 can be retracted in the direction away from the claw of the piston hook, so that the claw of the piston hook will not hinder the connecting part from entering the piston hook, so that the connecting part can smoothly enter the piston hook to complete the connection work.
[0054] The types of piston hooks, piston parts and syringes often used in hospitals are disposable high-pressure angiography syringes and their accessories. The syringes at this time are disposable items. After each use of the syringe, the old syringe needs to be discarded and a new syringe needs to be installed.
[0055] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made based on the contents of the present invention specification and drawings, or direct / indirect application in other related technical fields, are included in the patent protection scope of the present invention.
Claims
1. A syringe hook mechanism, characterized in that: include: jacket; a push rod movably disposed on the sheath, and having a connecting portion located outside the sheath, the connecting portion being used to connect with the piston hook; as well as, At least two limiting parts are provided, and at least two limiting parts are provided on the peripheral side of the connecting part, and the limiting parts are retractably provided so as to shrink toward the connecting part when the push rod moves toward the piston hook, thereby avoiding the protrusion at the opening of the piston hook.
2. The needle cylinder hook mechanism according to claim 1, characterized in that: At least two of the limiting parts are provided with an inclined surface on one side facing the piston hook, and the inclined surface is used to assist the limiting part in avoiding the protrusion at the opening of the piston hook.
3. The needle cylinder hook mechanism according to claim 2, characterized in that: The limiting portion has a first side and a second side in its movable direction, the inclined surface is located on the second side of the limiting portion, and the inclined surface is inclined toward the second side, and the end of the inclined surface away from the first side is close to the connecting portion, and the angle between the inclined surface and the outer peripheral side of the connecting portion is at least thirty degrees and at most sixty degrees.
4. The needle cylinder hook mechanism according to claim 3, characterized in that: The limiting portion includes: an elastic member, the elastic member being disposed in the connecting portion and extending toward an outer peripheral side of the connecting portion; The limiting member is arranged on the elastic member, and the inclined surface is arranged on the limiting member. The limiting member moves toward the outer peripheral side of the connecting portion along with the elastic member, so that the limiting portion can be telescopically moved on the connecting portion.
5. The needle cylinder hook mechanism according to claim 4, characterized in that: A positioning groove for the movement of the limiting member is formed on the connecting portion, and the positioning groove extends toward the outer peripheral side of the connecting portion, so that the movement direction of the limiting member is limited by the positioning groove.
6. The needle cylinder hook mechanism according to claim 4, characterized in that: A limiting block is provided in the connecting portion, and the limiting block is provided on the limiting member. A limiting groove for sliding connection of the limiting block is provided in the connecting portion, and the limiting block and the limiting groove are used to prevent the limiting member from detaching from the connecting portion.
7. The needle cylinder hook mechanism according to claim 1, characterized in that: The push rod is provided with a detection module, and the detection module is used to detect the distance between the push rod and the piston hook.
8. The needle cylinder hook mechanism according to claim 7, characterized in that: The detection module is electrically connected to the control module, the control module is electrically connected to the driving device, the driving device is drivingly connected to the push rod, and the driving device drives the push rod to move.
9. A high-pressure syringe assembly, comprising a piston hook, a piston member and a syringe, characterized in that: It comprises the syringe hook mechanism according to any one of claims 1 to 8, wherein the piston hook is arranged on the outer periphery of the connecting portion, the piston member is arranged on the piston hook, and the piston member is located on the side of the piston hook away from the push rod, and the syringe is movably arranged on the outside of the piston member.
10. The high-pressure injector assembly according to claim 9, wherein: The hook claw of the piston hook has a recoverable deformation structure and an irrecoverable deformation structure.