CN115530910A - Quantitative medical liquid conveying system - Google Patents

Quantitative medical liquid conveying system Download PDF

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Publication number
CN115530910A
CN115530910A CN202211292834.5A CN202211292834A CN115530910A CN 115530910 A CN115530910 A CN 115530910A CN 202211292834 A CN202211292834 A CN 202211292834A CN 115530910 A CN115530910 A CN 115530910A
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CN
China
Prior art keywords
conveying
gear
suction
trigger
transmission
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Pending
Application number
CN202211292834.5A
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Chinese (zh)
Inventor
朱悉煜
孙燕华
汤鑫龙
王东进
孙璞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Xinrui Medical Technology Co ltd
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Suzhou Xinrui Medical Technology Co ltd
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Priority to CN202211292834.5A priority Critical patent/CN115530910A/en
Publication of CN115530910A publication Critical patent/CN115530910A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00491—Surgical glue applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12099—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder
    • A61B17/12109—Occluding by internal devices, e.g. balloons or releasable wires characterised by the location of the occluder in a blood vessel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/12181—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
    • A61B17/12186—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices liquid materials adapted to be injected
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
    • A61B17/12181—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices
    • A61B17/1219—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device formed by fluidized, gelatinous or cellular remodelable materials, e.g. embolic liquids, foams or extracellular matrices expandable in contact with liquids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
    • A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
    • A61B2017/1205—Introduction devices
    • A61B2017/12054—Details concerning the detachment of the occluding device from the introduction device

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Reproductive Health (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

The invention discloses a quantitative medical liquid conveying system, and relates to the field of medical instruments. The technical scheme is characterized by comprising a shell, wherein the shell is connected with an injector jacket, a rack is arranged in the shell, and one end of the rack is provided with a sealing rubber plug matched with the injector jacket; a transmission gear meshed with the rack, a conveying gear driving assembly and a suction gear driving assembly which are respectively matched with the transmission gear are arranged in the shell; the conveying gear driving assembly comprises a conveying trigger and a second conveying gear in floating arrangement; the second conveying gear can be driven to revolve and shift while rotating by pressing the conveying trigger, so that the second conveying gear and the transmission gear are switched from a separation state to a meshing state; after the conveying trigger is reset, the second conveying gear and the transmission gear are switched to be in a separated state from a meshed state. The invention can respectively carry out the conveying and the suction of the medical liquid and has reliable transmission and good stability.

Description

Quantitative medical liquid conveying system
Technical Field
The present invention relates to the field of medical devices, and more particularly, to a metered dose medical fluid delivery system.
Background
Chinese patent No. CN105212984B discloses a system for treating veins comprising a dispenser gun, a syringe, an adapter and a catheter, the dispenser gun comprising a control, a retaining segment and a dispenser plunger, actuation of the control causing the dispenser plunger to advance the syringe plunger distally in a central lumen when a groove at a distal end of the adapter mates with a syringe flange of the syringe, effecting a delivery action. The dispenser gun includes a trigger and a spring mechanism that also includes a spring finger that is adjusted to allow one or more teeth of the plunger to move forward through the adapter and squeeze the syringe to dispense glue or adhesive when the trigger is depressed.
However, the system of the above patent also has the following problems: 1. the application of the spring claw has the risk of failure, so that the conveying can not be realized after the trigger is pressed; 2. the delivered adhesive is not only present at the target area but also distributed at sites such as puncture sites, resulting in undesirable closure, inflammation, ulceration, etc. at these sites, due to the residual amount of adhesive at the catheter end as the catheter is withdrawn, which adheres to the puncture site during withdrawal.
The problem 2 is that the system of the above patent only performs the conveying operation by pressing the trigger, but does not have the pressing and pumping function. If the plunger is pulled directly to perform suction, it is difficult to control the amount of suction, and the problem of excessive suction is easily caused.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides a quantitative medical fluid delivery system, which can respectively deliver and aspirate medical fluid and has reliable transmission and good stability.
In order to achieve the purpose, the invention provides the following technical scheme:
a quantitative medical liquid conveying system comprises a shell, wherein the shell is connected with an injector jacket, a rack is arranged in the shell, and one end of the rack is provided with a sealing rubber plug matched with the injector jacket;
a transmission gear meshed with the rack, a conveying gear driving assembly and a suction gear driving assembly which are respectively matched with the transmission gear are arranged in the shell;
the conveying gear driving assembly comprises a conveying trigger and a second conveying gear in floating arrangement; the second conveying gear can be driven to revolve and shift while rotating by pressing the conveying trigger, so that the second conveying gear and the transmission gear are switched from a separation state to a meshing state; after the conveying trigger is reset, the second conveying gear and the transmission gear are switched to a separation state from a meshing state;
the suction gear drive assembly comprises a suction trigger and a second suction gear in a floating arrangement; pressing the suction trigger can drive the second suction gear to perform revolution deviation while rotating, so that the second suction gear and the transmission gear are switched from a separation state to a meshing state; after the suction trigger is reset, the second suction gear and the transmission gear are switched from the meshing state to the separation state.
Furthermore, the second conveying gear is connected with a second conveying gear shaft, and a conveying arc groove matched with the second conveying gear shaft is formed in the shell; and when the conveying trigger is pressed, the second conveying gear rotates around the second conveying gear, and meanwhile, the second conveying gear shaft moves in the conveying arc groove, so that the second conveying gear performs revolution deviation.
Furthermore, the second conveying gear shaft is in clearance fit with the conveying arc groove.
Furthermore, a first conveying gear connected between the conveying trigger and the second conveying gear is arranged in the shell.
Further, the first conveying gear includes a first conveying internal tooth and a first conveying external tooth which are coaxially arranged, the second conveying gear includes a second conveying internal tooth and a second conveying external tooth which are coaxially arranged, and a conveying trigger gear portion is provided on the conveying trigger; carry trigger gear portion and first transport internal toothing, first transport external tooth and the meshing of second transport internal toothing, the second carries external tooth and transmission gear cooperation.
Further, when the conveying trigger is pressed, the speed reduction transmission is performed between the conveying trigger gear part and the first conveying internal teeth, between the first conveying external teeth and the second conveying internal teeth and between the second conveying external teeth and the transmission gear.
Further, the transmission gear comprises transmission internal teeth meshed with the rack, and a first transmission external tooth and a second transmission external tooth are respectively arranged on two sides of the transmission internal teeth; the first transmission external teeth are matched with a second conveying gear, and the second transmission external teeth are matched with a second suction gear.
Further, the conveying trigger and the suction trigger are respectively connected with an elastic reset piece.
Further, the second suction gear is connected with a second suction gear shaft, and a suction arc groove matched with the second suction gear shaft is formed in the shell; when the suction trigger is pressed, the second suction gear rotates around the second suction gear shaft while the second suction gear shaft moves in the suction arc groove, so that the second suction gear performs orbital deviation.
Further, one end of the rack, which is far away from the sealing rubber plug, penetrates out of the shell and is provided with a holding section.
In conclusion, the invention has the following beneficial effects:
1. the conveying gear set and the suction gear set are adopted, so that conveying and suction of medical liquid can be respectively carried out without disassembling the system, and the matching transmission of the teeth and the teeth is favorable for improving the reliability of transmission and reducing the risk of failure of the conveying system;
2. the second conveying gear and the second suction gear are in floating arrangement and can respectively perform one-way transmission to avoid interference;
3. when the conveying trigger and the suction trigger are not pressed, the transmission gear, the second conveying gear and the second suction gear are in a separated state, and the transmission gear is only meshed with the rack, so that conveying action can be finished by pushing the rack to the far end, or suction action can be finished by pulling the rack to the near end, and the convenience of operation of the conveying system is improved;
4. the displacement value of the rack is fixed every time the conveying trigger or the suction trigger is pressed, so that the aim of quantitative conveying or suction can be fulfilled;
5. simple structure, convenient equipment, low in production cost, stability is good.
Drawings
FIG. 1 is a first schematic diagram of a first embodiment of a metered dose medical fluid delivery system;
FIG. 2 is a schematic structural view of the housing in the embodiment;
FIG. 3 is a second schematic diagram of a metered dose medical fluid delivery system according to an embodiment;
FIG. 4 is a third schematic view of a metered dose medical fluid delivery system of an embodiment;
FIG. 5 is a fourth schematic structural view of a metered dose medical fluid delivery system according to an embodiment;
FIG. 6 is a fifth schematic view of a metered dose medical fluid delivery system according to an embodiment;
FIG. 7 is a sixth schematic view of a metered dose medical fluid delivery system according to an exemplary embodiment;
fig. 8 is a seventh schematic structural diagram of a quantitative medical liquid delivery system according to an embodiment.
In the figure: 1. a housing; 11. a first through hole; 12. a second through hole; 13. a card slot; 14. a third through hole; 15. a guide clamping groove; 16. a conveying arc groove; 17. a suction arc groove; 2. a syringe jacket; 21. a tail wing; 22. a luer fitting; 31. sealing the rubber plug; 32. a push rod; 33. a rack; 34. a holding section; 35. a guide plate; 4. a transmission gear; 41. driving the internal teeth; 42. a first drive outer gear; 43. a second drive outer gear; 44. a drive gear shaft; 51. a first conveying gear; 511. a first conveying internal tooth; 512. a first conveying outer tooth; 513. a first conveying gear shaft; 52. a second conveying gear; 521. a second conveying internal tooth; 522. a second conveying outer tooth; 523. a second conveying gear shaft; 53. a conveying trigger; 531. a conveying trigger gear part; 532. a conveyor trigger shaft; 533. an extension spring; 61. a first suction gear; 611. a first pumping inner tooth; 612. a first pumping outer tooth; 613. a first suction gear shaft; 62. a second suction gear; 621. a second pumping cog; 622. a second pumping outer tooth; 623. a second suction gear shaft; 63. a suction trigger; 631. a suction trigger gear portion; 632. a suction trigger shaft; 633. an elastic sheet.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
The embodiment is as follows:
a quantitative medical liquid delivery system, referring to fig. 1 to 8, which comprises a shell 1, wherein the shell 1 is connected with an injector jacket 2, a rack 33 is arranged in the shell 1, and one end of the rack 33 is provided with a sealing rubber plug 31 matched with the injector jacket 2; in the embodiment, a transmission gear 4 meshed with the rack 33, a conveying gear driving component and a suction gear driving component which are respectively matched with the transmission gear 4 are arranged in the shell 1; wherein the conveying gear driving assembly comprises a conveying trigger 53 and a second conveying gear 52 arranged in a floating manner; pressing the conveyance trigger 53 can drive the second conveyance gear 52 to perform orbital deviation while rotating, so that the second conveyance gear 52 and the transmission gear 4 are switched from the disengaged state to the engaged state; after the conveying trigger 53 is reset, the second conveying gear 52 and the transmission gear 4 are switched from the meshing state to the separation state; the suction gear driving assembly includes a suction trigger 63 and a second suction gear 62 disposed in a floating manner; pressing the suction trigger 63 can drive the second suction gear 62 to perform orbital shift while rotating, so that the second suction gear 62 and the transmission gear 4 are switched from a separated state to a meshed state; after the suction trigger 63 is reset, the second suction gear 62 and the transmission gear 4 are switched from the engaged state to the disengaged state.
Referring to fig. 1 to 8, in the present embodiment, the conveying and the suction of the liquid can be performed by using the conveying gear driving assembly and the suction gear driving assembly, respectively, and then the liquid can be sucked back by a small amount after being conveyed so as to prevent the liquid from contacting undesired positions, for example, the bad phenomenon caused by adhesive residue can be effectively reduced; taking the conveying gear driving assembly as an example, in the process of pressing the conveying trigger 53, the second conveying gear 52 can move to be meshed with the transmission gear 4 and drive the transmission gear 4 to rotate, the transmission gear 4 drives the rack 33 to move, and the rack 33 drives the sealing rubber plug 31 to compress the liquid in the injector outer sleeve 2, so that the liquid is conveyed; after the conveying trigger 53 is reset, the second conveying gear 52 is separated from the transmission gear 4, and the rack 33 is not influenced by the resetting process; therefore, the displacement of the rack 33 advancing by pressing the conveying trigger 53 each time is a fixed value, thereby achieving the effect of quantitative conveying; in a similar way, the quantitative suction effect can be realized by utilizing the suction gear driving assembly; in the embodiment, the transmission is realized by matching the teeth, so that the transmission reliability can be effectively improved, and the risk of failure of the conveying system is reduced; preferably, in this embodiment, one end of the rack 33, which is far away from the sealing rubber plug 31, penetrates through the housing 1, and is provided with a holding section 34, that is, the housing 1 is provided with a third through hole 14 for the rack 33 to penetrate through; when the delivery trigger 53 and the suction trigger 63 are not pressed, the transmission gear 4 is in a separated state from the second delivery gear 52 and the second suction gear 62, and the transmission gear 4 is only engaged with the rack 33, so that the delivery action can be completed by pushing the rack 33 to the far end, or the suction action can be completed by pulling the rack 33 to the near end, thereby improving the convenience of the operation of the delivery system; in the embodiment, the holding section 34 is provided with a pulling hole, so that the operation is convenient; of course, in other alternative embodiments, the holding section 34 can also be formed directly at the end of the rack 33, and is not limited herein.
Referring to fig. 1 to 8, in particular, in the present embodiment, the second conveying gear 52 is connected with a second conveying gear shaft 523, and a conveying arc groove 16 matched with the second conveying gear shaft 523 is arranged in the housing 1; when the conveying trigger 53 is pressed, the second conveying gear 52 rotates around the second conveying gear shaft 523, and the second conveying gear shaft 523 moves in the conveying arc chute 16, so that the second conveying gear 52 performs revolution deviation; preferably, the second conveying gear shaft 523 is in clearance fit with the conveying arc groove 16; the conveying arc chute 16 comprises a low end and a high end, when the second conveying gear shaft 523 is located at the low end in the conveying arc chute 16, the second conveying gear 52 is separated from the transmission gear 4, and when the second conveying gear shaft 523 moves to the high end in the conveying arc chute 16, the second conveying gear 52 is meshed with the transmission gear 4.
Referring to fig. 1 to 8, preferably, a first conveying gear 51 connected between a conveying trigger 53 and a second conveying gear 52 is provided in the housing 1; the first conveying gear 51 plays the roles of speed reduction and convenient structural arrangement; specifically, in the present embodiment, the first conveying gear 51 includes a first conveying inner tooth 511 and a first conveying outer tooth 512 which are coaxially arranged, the second conveying gear 52 includes a second conveying inner tooth 521 and a second conveying outer tooth 522 which are coaxially arranged, and the conveying trigger 53 is provided with a conveying trigger gear part 531; the conveying trigger gear portion 531 meshes with the first conveying internal teeth 511, the first conveying external teeth 512 meshes with the second conveying internal teeth 521, and the second conveying external teeth 522 meshes with the transmission gear 4; when the conveying trigger 53 is pressed, the speed reduction transmission is performed between the conveying trigger gear portion 531 and the first conveying inner teeth 511, between the first conveying outer teeth 512 and the second conveying inner teeth 521, and between the second conveying outer teeth 522 and the transmission gear 4; that is, the conveying gear driving assembly in this embodiment is a reduction gear set, so that it can be conveniently operated and controlled; in the present embodiment, the first conveying gear 51 is symmetrically provided with a first conveying gear shaft 513, the first conveying gear 51 rotates around the first conveying gear shaft 513, and the second conveying gear 52 arranged in a floating manner is kept in a meshed state with the first conveying gear 51, that is, the second conveying gear 52 performs orbital offset in the conveying arc groove 16 around the first conveying gear shaft 513.
Referring to fig. 1 to 8, specifically, the second suction gear 62 is connected with a second suction gear shaft 623, and a suction arc groove 17 engaged with the second suction gear shaft 623 is provided in the housing 1; when the suction trigger 63 is pressed, the second suction gear 62 rotates around the second suction gear shaft 623, and at the same time, the second suction gear shaft 623 moves within the suction arc chute 17, so that the second suction gear 62 performs a revolution shift; preferably, the second suction gear shaft 623 is in clearance fit with the suction arc chute 17; the pumping arc chute 17 includes a lower end and an upper end, the second pumping gear 62 is in a separated state from the transmission gear 4 when the second pumping gear shaft 623 is located at the lower end in the pumping arc chute 17, and the second pumping gear 62 is engaged with the transmission gear 4 when the second pumping gear shaft 623 is moved to the upper end in the pumping arc chute 17.
Referring to fig. 1 to 8, preferably, a first suction gear 61 connected between a suction trigger 63 and a second suction gear 62 is provided in the housing 1; the first suction gear 61 has the effects of speed reduction and convenience in structural arrangement; specifically, in the present embodiment, the first suction gear 61 includes a first suction inner tooth 611 and a first suction outer tooth 612 which are coaxially arranged, the second suction gear 62 includes a second suction inner tooth 621 and a second suction outer tooth 622 which are coaxially arranged, and the suction trigger 63 is provided with a suction trigger gear part 631; the suction trigger gear portion 631 meshes with the first suction inner tooth 611, the first suction outer tooth 612 meshes with the second suction inner tooth 621, and the second suction outer tooth 622 is engaged with the transmission gear 4; when the suction trigger 63 is pressed, the speed reduction transmission is performed between the suction trigger gear portion 631 and the first suction inner tooth 611, between the first suction outer tooth 612 and the second suction inner tooth 621, and between the second suction outer tooth 622 and the transmission gear 4; that is, the suction gear driving assembly in the present embodiment is a reduction gear set, so that it can be conveniently operated and controlled; the first suction gear 61 is symmetrically provided with a first suction gear shaft 613 in the present embodiment, the first suction gear 61 rotates on its own axis about the first suction gear shaft 613, and the second suction gear 62 arranged in a floating manner is kept in a meshed state with the first suction gear 61, that is, the second suction gear 62 performs orbital displacement within the suction arc chute 17 about the first suction gear shaft 613.
Referring to fig. 1 to 8, preferably, the transmission gear 4 in this embodiment includes an internal transmission gear 41 engaged with the rack 33, and a first external transmission gear 42 and a second external transmission gear 43 are respectively disposed on both sides of the internal transmission gear 41; the first transmission external teeth 42 are engaged with the second delivery external teeth 522, and the second transmission external teeth 43 are engaged with the second suction external teeth 622, so that the structural arrangement can be optimized, and the occurrence of interference is avoided.
Referring to fig. 1 to 8, preferably, the delivery trigger 53 and the suction trigger 63 are respectively connected with an elastic reset member, so that the automatic reset of the triggers can be realized by using elastic force; specifically, in the present embodiment, the elastic return element connected to the delivery trigger 53 is an extension spring 533, one end of the extension spring 533 is connected to the delivery trigger 53, and the other end is connected to the housing 1; when the conveying trigger 53 is pressed, the extension spring 533 is extended, and when the conveying trigger 53 is released, the extension spring 533 releases the elastic force to drive the conveying trigger 53 to reset; in the embodiment, the elastic reset piece connected with the suction trigger 63 is an elastic sheet 633, one end of the elastic sheet 633 is connected with the suction trigger 63, and the other end is abutted with the outer side wall of the housing 1; when the suction trigger 63 is pressed, the elastic sheet 633 is pressed to deform the elastic sheet 633, and when the suction trigger 63 is released, the elastic sheet 633 releases the elastic force to drive the suction trigger 63 to reset; of course, in other alternative embodiments, the elastic restoring element may also be selected from other types of elastic elements according to requirements, and is not limited herein; the housing 1 in this embodiment includes a handle portion, and the transport trigger 53 and the suction trigger 63 are respectively located on opposite sides of the handle portion, so that the arrangement can be facilitated and erroneous operation can be avoided; the structural forms and mounting positions of the delivery trigger 53 and the suction trigger 63 can be adjusted as necessary, and are not limited herein.
Referring to fig. 1 to 8, specifically, in the present embodiment, a push rod 32 is disposed between the sealing rubber plug 31 and the rack 33, and the push rod 32 extends into the syringe jacket 2, so as to avoid interference; preferably, the side walls of the rack 33 are symmetrically provided with guide plates 35, a guide clamping groove 15 matched with the guide plates 35 is arranged in the shell 1, and the guide plates 35 are matched with the guide clamping groove 15 to play a role in limiting and guiding, so that the rack 33 can only move along a linear direction; specifically, in the present embodiment, the housing 1 includes two half shells, and a guide slot 15 is respectively disposed on an inner side wall of each half shell; in the embodiment, the end part of the shell 1 connected with the injector outer sleeve 2 is provided with a first through hole 11, a clamping groove 13 and a second through hole 12 which are sequentially communicated and arranged, the end part of the injector outer sleeve 2 is provided with a tail wing 21 embedded in the clamping groove 13, and preferably, the tail wing 21 and the clamping groove 13 are in interference fit, so that the connection stability is ensured; the injector outer sleeve 2 extends out of the shell 1 after passing through the first through hole 11, and the second through hole 12 is used for the sealing rubber plug 31 to pass through; the injector jacket 2 is embedded in one of the half shells, and then the two half shells are buckled, so that the injector jacket 2 and the shell 1 can be stably connected; the proximal end of the syringe jacket 2 is provided with a fin 21 and the distal end thereof is provided with a luer 22, and the luer 22 is used for connecting a syringe or a catheter.
Referring to fig. 1 to 8, specifically, in this embodiment, two transmission gear shafts 44 are symmetrically arranged on the transmission gear 4, a shaft sleeve matched with the transmission gear shaft 44 is arranged on the inner side wall of the half shell, and after the two half shells are fastened, the two transmission gear shafts 44 are respectively embedded in the two shaft sleeves; the second conveying gear 52 is symmetrically provided with second conveying gear shafts 523, the inner side walls of the half shells are provided with conveying arc grooves 16, and after the two half shells are fastened, the two second conveying gear shafts 523 are respectively embedded in the two conveying arc grooves 16; similarly, two first conveying gear shafts 513 are symmetrically arranged on the first conveying gear 51, two conveying trigger shafts 532 are symmetrically arranged on the conveying trigger 53, two first suction gear shafts 613 are symmetrically arranged on the first suction gear 61, two suction trigger shafts 632 are symmetrically arranged on the suction trigger 63, and shaft sleeves matched with the shafts are respectively arranged on the inner wall of the shell 1; two second suction gear shafts 623 are symmetrically arranged on the second suction gear 62, and the suction arc grooves 17 are arranged in the half shells.

Claims (10)

1. A quantitative medical liquid delivery system comprises a shell, wherein the shell is connected with an injector outer sleeve, a rack is arranged in the shell, and one end of the rack is provided with a sealing rubber plug matched with the injector outer sleeve;
the method is characterized in that:
a transmission gear meshed with the rack, a conveying gear driving assembly and a suction gear driving assembly which are respectively matched with the transmission gear are arranged in the shell;
the conveying gear driving assembly comprises a conveying trigger and a second conveying gear in floating arrangement; the second conveying gear can be driven to revolve and shift while rotating by pressing the conveying trigger, so that the second conveying gear and the transmission gear are switched from a separation state to a meshing state; after the conveying trigger is reset, the second conveying gear and the transmission gear are switched to a separation state from a meshing state;
the suction gear drive assembly comprises a suction trigger and a second suction gear in a floating arrangement; pressing the suction trigger can drive the second suction gear to perform revolution deviation while rotating, so that the second suction gear and the transmission gear are switched from a separation state to a meshing state; after the suction trigger is reset, the second suction gear and the transmission gear are switched from the meshing state to the separation state.
2. The metered dose medical liquid delivery system of claim 1, wherein: the second conveying gear is connected with a second conveying gear shaft, and a conveying arc groove matched with the second conveying gear shaft is formed in the shell; and when the conveying trigger is pressed, the second conveying gear rotates around the second conveying gear shaft, and meanwhile, the second conveying gear shaft moves in the conveying arc groove, so that the second conveying gear performs revolution deviation.
3. A metered dose medical liquid delivery system according to claim 2, wherein: and the second conveying gear shaft is in clearance fit with the conveying arc groove.
4. The metered dose medical liquid delivery system of claim 1, wherein: a first conveying gear connected between the conveying trigger and the second conveying gear is arranged in the shell.
5. The metered dose medical liquid delivery system of claim 4, wherein: the first conveying gear comprises a first conveying internal tooth and a first conveying external tooth which are coaxially arranged, the second conveying gear comprises a second conveying internal tooth and a second conveying external tooth which are coaxially arranged, and a conveying trigger gear part is arranged on the conveying trigger; carry trigger gear portion and first transport internal tooth meshing, first transport external tooth and the meshing of second transport internal tooth, the second is carried external tooth and is cooperated with drive gear.
6. The metered dose medical liquid delivery system of claim 5, wherein: when the conveying trigger is pressed, the speed reduction transmission is realized between the gear part of the conveying trigger and the first conveying internal teeth, between the first conveying external teeth and the second conveying internal teeth and between the second conveying external teeth and the transmission gear.
7. The metered dose medical liquid delivery system of claim 1, wherein: the transmission gear comprises transmission inner teeth meshed with the rack, and a first transmission outer tooth and a second transmission outer tooth are arranged on two sides of the transmission inner teeth respectively; the first transmission external teeth are matched with a second conveying gear, and the second transmission external teeth are matched with a second suction gear.
8. The metered dose medical liquid delivery system of claim 1, wherein: the conveying trigger and the suction trigger are respectively connected with an elastic reset piece.
9. The metered dose medical liquid delivery system of claim 1, wherein: the second suction gear is connected with a second suction gear shaft, and a suction arc groove matched with the second suction gear shaft is formed in the shell; when the suction trigger is pressed, the second suction gear rotates around the second suction gear shaft while the second suction gear shaft moves in the suction arc groove, so that the second suction gear performs revolution deviation.
10. The metered dose medical liquid delivery system of claim 1, wherein: one end of the rack, which is far away from the sealing rubber plug, penetrates out of the shell and is provided with a holding section.
CN202211292834.5A 2022-10-21 2022-10-21 Quantitative medical liquid conveying system Pending CN115530910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211292834.5A CN115530910A (en) 2022-10-21 2022-10-21 Quantitative medical liquid conveying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211292834.5A CN115530910A (en) 2022-10-21 2022-10-21 Quantitative medical liquid conveying system

Publications (1)

Publication Number Publication Date
CN115530910A true CN115530910A (en) 2022-12-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211292834.5A Pending CN115530910A (en) 2022-10-21 2022-10-21 Quantitative medical liquid conveying system

Country Status (1)

Country Link
CN (1) CN115530910A (en)

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