CN106620963B - Pushing device - Google Patents

Pushing device Download PDF

Info

Publication number
CN106620963B
CN106620963B CN201610942116.6A CN201610942116A CN106620963B CN 106620963 B CN106620963 B CN 106620963B CN 201610942116 A CN201610942116 A CN 201610942116A CN 106620963 B CN106620963 B CN 106620963B
Authority
CN
China
Prior art keywords
adjusting
sleeve
ring
shell
transmission sleeve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201610942116.6A
Other languages
Chinese (zh)
Other versions
CN106620963A (en
Inventor
楚耀强
林林
刘鹏
周伟
周子航
林奕航
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.)
Kunshan Haerxi Medical Devices Co ltd
Original Assignee
Kunshan Haerxi Medical Devices Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kunshan Haerxi Medical Devices Co ltd filed Critical Kunshan Haerxi Medical Devices Co ltd
Priority to CN201610942116.6A priority Critical patent/CN106620963B/en
Publication of CN106620963A publication Critical patent/CN106620963A/en
Application granted granted Critical
Publication of CN106620963B publication Critical patent/CN106620963B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M35/00—Devices for applying media, e.g. remedies, on the human body
    • A61M35/003—Portable hand-held applicators having means for dispensing or spreading integral media
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178—Syringes
    • A61M5/31—Details
    • A61M5/3129—Syringe barrels

Landscapes

  • Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Vascular Medicine (AREA)
  • Prostheses (AREA)
  • Mechanical Control Devices (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

The invention discloses a pushing device which comprises a shell, wherein a scale ring is arranged on the inner wall of the shell, and the outer surface of the scale ring is in threaded connection with the inner wall of the shell; one end of the shell is also provided with an adjusting knob which is fixedly connected with a scale ring, and the scale ring rotates along with the rotation of the adjusting knob; one end of the adjusting transmission sleeve is connected with the adjusting knob, and the adjusting transmission sleeve rotates along with the rotation of the adjusting knob; the adjusting stable ring is sleeved on the adjusting transmission sleeve, the outer surface of the adjusting stable ring is in threaded connection with the inner wall of the scale ring, and the adjusting stable ring is fixedly connected with the adjusting transmission sleeve in the axial direction; one end of the push rod penetrates through the adjusting transmission sleeve, the other end of the push rod extends out of the output end of the shell, and the outer surface of the push rod is in threaded connection with the inner wall of the adjusting transmission sleeve; the output end of the shell is also provided with a rotation stopping structure for limiting the rotation of the push rod; install the push button at the shell regulation end, when pressing the push button, can promote to adjust the transmission cover and remove to the output.

Description

Pushing device
Technical Field
The invention relates to the field of medical instruments, in particular to a pushing device.
Background
For diabetics, their glycemic index is important, requiring regular attention and recording, and in order to reduce fluctuations in their glycemic index, drug control is required. Artificial insulin is a well-known hypoglycemic agent which must be administered parenterally in order to function in the human body. Currently, the most common way of administering artificial insulin to diabetic patients is by subcutaneous injection; subcutaneous injections mostly use disposable or fixed-dose syringes, but there are many inconveniences in use because the dose that a patient needs to inject depends on his blood glucose index.
Although there is an injection device capable of adjusting dosage in the market at present, there is a problem of complicated operation or high cost, and if there is a quantitative injection device or quantitative pushing device with convenient operation and low cost, the problem can be solved well.
In addition, in the use of other non-liquid medicines, accurate quantitative use is also required sometimes, such as external ointment and the like, and if a quantitative pushing device or a quantitative extruding device can be provided, the requirement can be met.
Therefore, it is an urgent need to provide a pushing device that can accurately adjust the usage amount, is convenient to operate, and has a low cost.
Disclosure of Invention
In view of this, it is desirable to provide a pushing device in an embodiment of the present invention, which can accurately adjust the usage amount of the pushed objects, and is convenient to use and low in cost.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the embodiment of the invention provides a pushing device which comprises a shell, a scale ring, an adjusting knob, an adjusting transmission sleeve, an adjusting stabilizing ring, a push rod and a pushing button, wherein the scale ring is arranged on the shell; wherein, the first and the second end of the pipe are connected with each other,
one end of the shell is an output end connected with the material pushing container, and the other end of the shell is an adjusting end for adjusting the pushing amount;
the outer surface of the scale ring is provided with a pushing amount scale mark, the scale ring is installed on the inner wall of the shell, and the outer surface of the scale ring is in threaded connection with the inner wall of the shell;
the adjusting knob is arranged at the adjusting end of the shell and is fixedly connected with the scale ring, and the scale ring rotates along with the rotation of the adjusting knob;
the adjusting transmission sleeve is arranged in the shell in a penetrating way, one end of the adjusting transmission sleeve is connected with the adjusting knob, and the adjusting transmission sleeve rotates along with the rotation of the adjusting knob;
the adjusting and stabilizing ring is sleeved on the adjusting transmission sleeve, and the adjusting and stabilizing ring and the adjusting transmission sleeve are axially fixed; the outer surface of the adjusting and stabilizing ring is in threaded connection with the inner wall of the scale ring;
one end of the push rod penetrates through the adjusting transmission sleeve, the other end of the push rod extends out of the output end of the shell, and the outer surface of the push rod is in threaded connection with the inner wall of the adjusting transmission sleeve; the output end of the shell is also provided with a rotation stopping structure for limiting the rotation of the push rod;
the push button is installed at the adjusting end of the shell, the lower end of the push button penetrates through the adjusting knob, and the adjusting transmission sleeve moves towards the output end along with the push button.
Preferably, one end of the adjusting and stabilizing ring facing the output end of the shell is provided with a preset matching structure which is fixed with the inner wall of the shell in the circumferential direction and is not fixed in the axial direction.
Preferably, the outer surface of the adjusting and stabilizing ring is provided with an anti-rotation bump, and the housing is provided with an anti-rotation groove which is matched with the anti-rotation bump and extends along the axial direction.
Preferably, the inner wall of the adjusting and stabilizing ring is provided with an annular elastic flange, and the outer surface of the adjusting and driving sleeve is provided with an annular groove matched with the elastic flange.
Preferably, the output end of the shell is provided with a retaining ring for controlling the pushing amount, the retaining ring is fixed at a preset position on the inner wall of the shell, and the retaining ring is provided with an inner hole with a diameter between the diameter of the outer circle of the push rod and the maximum diameter of the lower end of the adjusting transmission sleeve.
Preferably, one end of the adjusting transmission sleeve is provided with an outer cylindrical gear, the adjusting knob is provided with an inner cylindrical gear matched with the outer cylindrical gear, and the adjusting knob drives the adjusting transmission sleeve to rotate through the meshing of the outer cylindrical gear and the inner cylindrical gear.
Preferably, the adjusting transmission sleeve is provided with an elastic component which keeps the external cylindrical gear and the internal cylindrical gear in a meshed state.
Preferably, the adjusting transmission sleeve comprises an upper adjusting sleeve and a lower adjusting sleeve; the upper adjusting sleeve penetrates through the inner wall of the scale ring, and one end of the upper adjusting sleeve is provided with the outer cylindrical gear; the lower adjusting transmission sleeve is provided with an internal thread matched with the push rod, the lower adjusting sleeve penetrates through the upper adjusting sleeve, and the lower adjusting sleeve rotates along with the rotation of the upper adjusting sleeve.
Preferably, the inner hole of the baffle ring is axially divided into a first cavity and a second cavity which are different in diameter, the diameter of the first cavity is larger than a preset threshold value of the maximum diameter of the lower end of the lower adjusting sleeve, and the diameter of the second cavity is between the diameter of the outer circle of the push rod and the maximum diameter of the lower end of the adjusting transmission sleeve.
Preferably, the lower end of the lower adjusting sleeve is provided with an elastic structure for reducing the radial shaking of the lower adjusting sleeve in the first cavity.
Preferably, the outer circle surface of the lower end of the lower adjusting sleeve is provided with at least two elastic bulges which are uniformly distributed along the circumference; and an elastic groove matched with the elastic bulge is formed in the inner wall of the inner hole of the baffle ring.
Preferably, the push button comprises a cylinder and a brim, and the brim is positioned at the top end of the cylinder; the cylinder penetrates through an inner hole of the adjusting knob and is in contact with the end face of the adjusting transmission sleeve; the diameter of the brim is larger than the inner hole of the adjusting knob.
The pushing device provided by the embodiment of the invention comprises a shell, wherein one end of the shell is an output end connected with a pushed object container, and the other end of the shell is an adjusting end for adjusting the pushing amount; the inner wall of the shell is provided with a scale ring, the outer surface of the scale ring is provided with a pushing amount scale mark, and the outer surface of the scale ring is in threaded connection with the inner wall of the shell; an adjusting knob is further mounted at one end of the shell and fixedly connected with the scale ring, and when the adjusting knob is rotated, the scale ring can be driven to rotate; one end of the adjusting transmission sleeve is connected with the adjusting knob, and when the adjusting knob is rotated, the adjusting transmission sleeve can be driven to rotate; the adjusting stable ring is sleeved on the adjusting transmission sleeve, the outer surface of the adjusting stable ring is in threaded connection with the inner wall of the scale ring, and the adjusting stable ring is fixedly connected with the adjusting transmission sleeve in the axial direction; one end of the push rod penetrates through the adjusting transmission sleeve, the other end of the push rod extends out of the output end of the shell, and the outer surface of the push rod is in threaded connection with the inner wall of the adjusting transmission sleeve; the output end of the shell is also provided with a rotation stopping structure for limiting the rotation of the push rod; the push button is arranged at the adjusting end of the shell, and when the push button is pressed, the adjusting transmission sleeve can be pushed to move towards the output end; therefore, the pushing device provided by the embodiment of the invention drives the adjusting transmission sleeve, the push rod, the shell and the scale ring to perform spiral motion through adjustment of the adjusting knob, reduces axial sliding of the adjusting transmission sleeve through the adjusting stabilizing ring, can accurately adjust the usage amount of pushed objects, is convenient to use, completely adopts a mechanical structure, does not need an electronic control component, and is low in cost.
Drawings
FIG. 1 is a schematic cross-sectional view of a pushing device according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a pushing device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an adjusting knob in a pushing device according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a scale ring in the pushing device according to the embodiment of the present invention;
FIG. 5 is a schematic view of an upper adjustment sleeve of a pushing device according to an embodiment of the present invention;
FIG. 6 is a schematic view of a lower adjustment sleeve in a pushing device according to an embodiment of the present invention;
FIG. 7 is a schematic view of a pushing rod of a pushing device according to an embodiment of the present invention;
FIG. 8 is a schematic view of an adjusting stabilizing ring in a pushing device according to an embodiment of the present invention;
FIG. 9 is a first schematic diagram of a combined function ring of a pushing device according to an embodiment of the present invention;
FIG. 10 is a second schematic diagram of a combined function ring of a pushing device according to an embodiment of the present invention;
fig. 11 is a schematic orthographic view of a lower end face of a lower adjustment sleeve in a pushing device according to an embodiment of the invention.
Detailed Description
The pushing device in the embodiment of the invention comprises a shell, wherein one end of the shell is an output end connected with a pushed object container, and the other end of the shell is an adjusting end for adjusting the pushing amount; the inner wall of the shell is provided with a scale ring, the outer surface of the scale ring is provided with a pushing amount scale mark, and the outer surface of the scale ring is in threaded connection with the inner wall of the shell; an adjusting knob is further mounted at one end of the shell and fixedly connected with the scale ring, and when the adjusting knob is rotated, the scale ring can be driven to rotate; one end of the adjusting transmission sleeve is connected with the adjusting knob, and the adjusting transmission sleeve can be driven to rotate when the adjusting knob is rotated; the adjusting stable ring is sleeved on the adjusting transmission sleeve, the outer surface of the adjusting stable ring is in threaded connection with the inner wall of the scale ring, and the adjusting stable ring is fixedly connected with the adjusting transmission sleeve in the axial direction; one end of the push rod penetrates through the adjusting transmission sleeve, the other end of the push rod extends out of the output end of the shell, and the outer surface of the push rod is in threaded connection with the inner wall of the adjusting transmission sleeve; the output end of the shell is also provided with a rotation stopping structure for limiting the rotation of the push rod; install the push button at the shell regulation end, when pressing the push button, can promote to adjust the transmission cover and remove to the output.
The working process of the embodiment of the invention comprises the steps of installing a material pushing container, adjusting the pushing amount, pushing and resetting, and the specific working principle is as follows:
1) Installing a material pushing container, wherein the material pushing container can be split, namely, firstly installing a material bin, then installing a material bottle filled with pushing materials, discarding the material bottle after pushing, and recycling the material bin; the material bin and the material bottle are integrated, and the material bin and the material bottle can be directly mounted, are directly discarded after being pushed and are disposable; the push container is loaded from the output end of the shell, and the rotation of the push rod is limited through the rotation stopping structure of the shell after the push container is loaded;
2) Adjust propelling movement volume, rotate adjust knob, make adjust knob to the regulation end spiral shell-type rising, adjust knob's rotation can drive and adjust the transmission cover and rotate, because adjust the transmission cover and be threaded connection with the push rod, but the rotation of push rod is restricted by the structure, and the head of push rod has withstood the piston of material bottle, and the resistance is great, and powerless is to output axial displacement, promptly: the adjustable transmission sleeve cannot rotate and cannot move forcedly, so that the adjustable transmission sleeve can spirally rise towards the adjusting end of the shell, a certain distance is generated between one end of the adjustable transmission sleeve facing the output end of the shell and the output end of the shell along with the spiral rising of the adjustable transmission sleeve, and the pushing amount is determined by the distance; meanwhile, the adjusting knob and the scale ring are fixedly connected, so that the scale ring can also spirally rise, the moving distance of the scale ring has a certain proportional relation with the moving distance of the adjusting transmission sleeve, and the outer wall of the scale ring is provided with a pushed object scale mark, so that the pushed amount can be known through a reading window of the shell;
in order to ensure that the pushing amount is more accurate, the thread pitch of the thread of the scale ring is larger than that of the thread of the adjusting transmission sleeve, so that the moving distance of the adjusting transmission sleeve can be enlarged through the scale ring, and the pushing amount scale mark is more accurate;
in order to adjust the driving sleeve, after the adjustment is stopped, namely after the adjusting knob, the adjusting driving sleeve and the scale ring stop rotating, the adjusting driving sleeve cannot slide downwards under the action of gravity, because the clearance of the threaded connection between the adjusting driving sleeve and the push rod is in a certain range, if the clearance is too large, free sliding is easy to occur; the adjusting transmission sleeve is provided with an adjusting stabilizing ring, and the adjusting stabilizing ring and the adjusting transmission sleeve are axially fixed; the outer surface of the adjusting and stabilizing ring is in threaded connection with the inner wall of the scale ring; therefore, the sliding of the adjusting transmission sleeve is limited not only by the threaded connection between the adjusting transmission sleeve and the push rod, but also by the threaded connection between the adjusting stabilizing ring and the scale ring, and the axial sliding of the adjusting transmission sleeve is basically avoided;
3) Pushing, namely pressing a pushing button, pushing the adjusting transmission sleeve to move towards the output end of the shell by the pushing button, connecting the adjusting transmission sleeve with the push rod in a threaded manner, and pushing the push rod to move until one end of the adjusting transmission sleeve, which faces towards the output end of the shell, props against the shell to complete pushing of a set pushing amount; meanwhile, the pushing button can extrude the adjusting knob when moving downwards, so that the scale ring is driven to spirally descend, and the scale returns to zero.
Note that: if the pushing object of the material bottle is not pushed completely, the push rod cannot rotate, namely the pushing object container cannot be detached, otherwise, the accuracy of the pushing amount is influenced.
4) Resetting, after the pushing object of the material bottle is pushed, disassembling the pushing object container, removing the rotation limitation of the push rod, manually rotating the push rod to enable the push rod to move towards the adjusting end of the shell and return to the position before pushing;
in addition, in order to ensure that most of the material bottles on the market can be pushed, the push rod needs to be designed to be long enough, so that the adjusting transmission sleeve is considered to be provided with a sufficient cavity to accommodate the push rod during design.
The embodiment of the invention is mainly used for pushing liquid medicaments for diabetics or other patients, but the embodiment of the invention can also be used for other occasions needing quantitative pushing of other materials, which is not described herein.
The invention is further illustrated by the following figures and specific application examples.
For simplicity, the pusher and its components are described in the orientation shown in fig. 1, i.e., both above and below refer to the top and bottom in fig. 1.
Referring to fig. 1-4, a pushing device includes a housing 1, where the lower end of the housing 1 is an output end connected to a container for pushing materials, and the upper end is an adjusting end for adjusting pushing amount; the inner wall of the shell 1 is provided with a scale ring 2, the outer surface of the scale ring 2 is provided with a scale mark (not shown in the figure), the outer surface of the scale ring 2 is in threaded connection with the inner wall of the shell 1, namely, the outer surface of the scale ring 2 is provided with a first external thread 21, and the inner wall of the shell 1 is provided with a first internal thread;
further, the thread type of the first external thread 21 and the first internal thread is a transmission thread, i.e. the thread type is rectangular, trapezoidal or saw-tooth; because basically not atress, preferably rectangle, transmission efficiency is high like this, and frictional force is little.
An adjusting knob 3 is installed at the adjusting end of the shell 1, the adjusting knob 3 is fixedly connected with the scale ring 2, and when the adjusting knob 3 is rotated, the scale ring 2 can be driven to rotate; as shown in fig. 3 and 4, the adjusting knob 3 and the scale ring 2 are fixed together through a mortise and tenon joint structure;
specifically, the upper end of the scale ring 2 is provided with an axial elastic lug 22, and the adjusting knob 3 is provided with a through groove 31 matched with the elastic lug 22; the elastic lugs 22 are T-shaped, two of the elastic lugs are in a group, and three groups are formed in total and are uniformly distributed in the axial direction; correspondingly, three through grooves 31 are also arranged; after the elastic lug 22 extends into the through groove 31, the upper end of the elastic lug 22 clamps the through groove 31 to complete fixed connection; further, the lower end of the through slot 31 is provided with a taper for the elastic lug 22 to extend into;
the purpose of two elastic lugs 22 per group of elastic lugs 22 is to provide a high degree of elasticity for ease of assembly.
The output end of the housing 1 is provided with a second external thread 12 for mounting a tote container, which is not shown in the figures for clarity of presentation.
The outer surface of the adjusting knob 3 is provided with a plurality of knurls 32 for increasing friction force, and the types of knurls are various and are not limited.
As shown in fig. 2, a reading window 11 is disposed on the surface of the housing 1, and the scale marks of the pushed objects on the outer surface of the scale ring 2 can be seen, wherein the scale marks of the pushed objects are arranged according to a spiral line, and the scale values are gradually increased from top to bottom.
As shown in fig. 1, an adjusting transmission sleeve is arranged in the inner cavity of the housing 1, the upper end of the adjusting transmission sleeve is connected with the adjusting knob 3, and when the adjusting knob 3 is rotated, the adjusting transmission sleeve can be driven to rotate.
In order to facilitate the machining and avoid interference between the two processes "adjusting the pushing amount" and "pushing", said adjusting driving sleeve is not formed integrally, but comprises an upper adjusting sleeve 41 and a lower adjusting sleeve 42, see fig. 5 and 6;
the upper adjusting sleeve 41 is sleeved on the lower adjusting sleeve 42 and can drive the lower adjusting sleeve 42 to rotate;
specifically, as shown in fig. 5 and 6, a key 421 is disposed on an outer surface of an upper end of the lower adjusting sleeve 42, a key groove (not shown in the drawings) is disposed on an inner wall of the upper adjusting sleeve 41, and torque is transmitted through cooperation between the key 421 and the key groove, so that the upper adjusting sleeve 41 drives the lower adjusting sleeve 42 to rotate; the length of the key groove in the axial direction is greater than that of the key, so that the lower adjusting sleeve 42 and the upper adjusting sleeve 41 can move axially based on each other;
further, the key 421 may be a spline, and in this embodiment, a spline with four splines is adopted, so that torque transmission is stable, and machining is relatively convenient.
As shown in fig. 3 and 5, an outer cylindrical gear 411 is arranged at the upper end of the upper adjusting sleeve 41, an inner cylindrical gear 33 matched with the outer cylindrical gear 411 is arranged on the adjusting knob 3, and the adjusting transmission sleeve is driven to rotate by the engagement of the outer cylindrical gear 411 and the inner cylindrical gear 33 through the adjusting knob 3;
the inner circular gears 33 are designed into three sections which are not connected with each other and are uniformly distributed along the circumference, so that the through grooves 31 can be arranged between the three sections of the inner circular gears 33 which are not connected with each other, the structure is more compact, and the volume is smaller and more ingenious.
Specifically, the cross-sectional shapes of the teeth of the outer cylindrical gear 411 and the inner gear 33 are triangular, and the outer end of the outer cylindrical gear 411 is arc-shaped for smooth engagement.
Further, in order to keep the outer cylindrical gear 411 and the inner circular gear 33 in a normal meshing state, the adjusting transmission sleeve is provided with an elastic component (not shown in the figure) which keeps the outer cylindrical gear 411 and the inner circular gear 33 in a meshing state;
specifically, the elastic component may be a compression spring, and the wire diameter, the pitch, and the like of the compression spring may be designed according to a required pre-pressure, so that a relatively accurate pre-pressure value may be obtained.
As shown in fig. 1, a push rod 5 penetrates through the adjusting transmission sleeve, in this embodiment, the push rod 5 penetrates through the lower adjusting sleeve 42, the upper end of the push rod 5 penetrates through the lower adjusting sleeve 42, the lower end of the push rod extends out of the output end of the housing 1, and the outer surface of the push rod 5 is in threaded connection with the inner wall of the adjusting transmission sleeve; the outer surface of the push rod 5 is provided with a third external thread 51, and the inner wall of the lower adjusting sleeve 42 is provided with a third internal thread (not shown in the figure);
further, the thread type of the third external thread 51 and the third internal thread is a transmission thread, i.e. the thread type is rectangular, trapezoidal or zigzag, and for better wear resistance, trapezoidal is preferred, so that the transmission efficiency is higher and the service life is longer.
According to the principle of the embodiment, the push rod 5 cannot rotate when the pushing amount is adjusted, so that the output end of the shell 1 is provided with a rotation stopping structure for limiting the rotation of the push rod 5;
specifically, the rotation stopping structure may be provided with at least one flat potential surface 52 penetrating the entire length on the circumference of the push rod 5, and the rest is a third external thread 51, as shown in fig. 7; then, a rotation stopping hole (not shown in the figure) with a cross section shape corresponding to that of the push rod 5 is arranged at the output end of the shell 1, so that the push rod 5 cannot rotate as long as the rotation stopping hole is fixed;
further, there may be a plurality of flat potential surfaces 52, but too much can reduce the area of the thread surface, which is not favorable for the spiral motion, and in this embodiment, there are two flat potential surfaces 52;
furthermore, the rotation stopping hole can be movable, when the output end of the shell 1 is provided with the container for pushing the material, the rotation stopping hole is completely fixed, the push rod 5 cannot rotate, and the accuracy of the pushing amount is ensured; when the shell 1 is detached from the material pushing container, the rotation stopping hole can rotate, so that the push rod 5 can be conveniently reset.
After the adjusting transmission sleeve is divided into an upper adjusting sleeve 41 and a lower adjusting sleeve 42, the upper adjusting sleeve 41 and the lower adjusting sleeve 42 move independently, so that two processes of adjusting the pushing amount and pushing are controlled more easily without interference; however, this also entails the problem that during the "adjustment of the push volume" stop and "push", the axial position of the lower adjustment sleeve 42 is free, and if the fit clearance of the threaded connection between it and the push rod 5 is relatively large, it may cause additional axial slippage under its own weight or otherwise, which may have the consequence of inaccurate push volume;
to avoid this, the pushing device is also provided with an adjusting and stabilizing ring 6; the adjusting and stabilizing ring 6 is sleeved on the lower adjusting sleeve 42, and the structure and shape of the adjusting and stabilizing ring 6 are shown in fig. 8;
specifically, the adjusting and stabilizing ring 6 and the lower adjusting sleeve 42 are axially fixed, and the outer surface of the adjusting and stabilizing ring 6 is in threaded connection with the inner wall of the scale ring 2;
more specifically, the outer surface of the adjusting and stabilizing ring 6 is provided with a fourth external thread 61, and the inner wall of the scale ring 2 is provided with a fourth internal thread, so that the sliding of the lower adjusting sleeve 42 is limited not only by the threaded connection between the lower adjusting sleeve and the push rod 5, but also by the threaded connection between the adjusting and stabilizing ring 6 and the scale ring 2, and the axial sliding of the lower adjusting sleeve 42 is greatly limited;
the inner wall of the adjusting and stabilizing ring 6 is provided with an annular elastic flange (not shown in the figure), and the outer circumferential surface of the lower adjusting sleeve 42 is provided with an annular groove 422 matched with the elastic flange; the annular groove 422 and the elastic flange have small axial clearance to ensure the mutual axial fixation; it should be noted that the height of the elastic flange protruding from the inner wall of the adjustment and stabilization ring 6 is limited, or it may not fit into the annular groove 422 even if it is elastic.
In order to further limit the movement of the adjusting stabilizing ring 6, a preset matching structure which is fixed with the inner wall of the shell 1 in the circumferential direction and is not fixed in the axial direction is arranged at one end, facing the output end of the shell 1, of the adjusting stabilizing ring 6;
specifically, the outer surface of the adjusting and stabilizing ring 6 is provided with an anti-rotation projection 62, and the housing 1 is provided with an anti-rotation groove (not shown in the figures) which is matched with the anti-rotation projection 62 and extends along the axial direction; therefore, when the adjusting and stabilizing ring 6 moves axially, the adjusting and stabilizing ring can only move axially along the direction of the anti-rotation groove, and the axial sliding of the lower adjusting sleeve 42 after the adjustment is stopped can be further limited.
In order to control the pushing amount, the output end of the shell 1 is provided with a baffle ring for controlling the pushing amount, the baffle ring is fixed at a preset position of the inner wall of the shell 1, and the baffle ring is provided with an inner hole with the diameter between the diameter of the excircle of the push rod 5 and the maximum diameter of the lower end of the adjusting transmission sleeve; in this way, the adjusting drive sleeve moves downwards to the position of the retaining ring and is blocked by the upper end face of the retaining ring, and the blocking position is the position of the adjusting drive sleeve when the scale ring 2 is at the zero position.
In this embodiment, the inner wall of the housing 1 is provided with a combined function ring 8, as shown in fig. 9 and 10, the lower end of the combined function ring 8 has the function of the stop ring, that is, an inner hole with a diameter between the diameter of the outer circle of the push rod 5 and the maximum diameter of the lower end of the adjusting transmission sleeve is provided;
the inner wall of the upper end of the combined function ring 8 is also provided with a fifth internal thread 81 matched with the first external thread 21 of the scale ring 2, and the combined function ring 8 is also provided with a rectangular hole 82 corresponding to the reading window 11 of the shell 1, so that the medicament scale of the scale ring 2 can be conveniently checked;
in this embodiment, the internal thread matching with the first external thread 21 of the scale ring 2 is disposed on the combined function ring 8 and separated from the housing 1, which facilitates the processing and manufacturing of the housing 1, and enables the housing 1 to focus on external designs such as the beauty of the appearance, and the like, without detailed description;
in practical use, the combined function ring 8 can be divided into two or more parts to be manufactured and assembled separately for convenience of manufacture and assembly, and will not be described in detail.
Further, the inner hole at the lower end of the combined function ring 8 is axially divided into a first cavity 83 and a second cavity 84 with different diameters, the diameter of the first cavity 83 is larger than a preset threshold value of the maximum diameter of the lower end of the lower adjusting sleeve 42, and the diameter of the second cavity 84 is between the diameter of the outer circle of the push rod 5 and the maximum diameter of the lower end of the adjusting transmission sleeve.
The diameter of the second cavity 84 is between the diameter of the outer circle of the push rod 5 and the maximum diameter of the lower end of the adjusting transmission sleeve, and is used for preventing the adjusting transmission sleeve from moving downwards after the preset pushing amount is completed, but the diameter cannot influence the penetration of the push rod 5;
the diameter of the first cavity 83 is greater than a preset threshold of the maximum diameter of the lower end of the lower adjusting sleeve 42, and the preset threshold needs to be strictly controlled, for example, at least greater than 0.05mm (different according to different materials and surface roughness), so that the lower end of the lower adjusting sleeve 42 can smoothly extend into the first cavity 83 of the combined function ring 8, but the value of the diameter of the first cavity 83, which is greater than the maximum diameter of the lower end of the lower adjusting sleeve 42, cannot be too large, that is, the gap cannot be too large, so that when the rotation and movement of the transmission sleeve are adjusted, there is no radial shaking;
furthermore, the lower end of the lower adjusting sleeve 42 may be provided with an elastic structure, such as an elastic steel ball, so as to further ensure that there is no radial shaking;
furthermore, the lower end of the lower adjusting sleeve 42 is radially provided with elastic bulges which are uniformly distributed along the circumference; the inner wall of the first cavity 83 is provided with an elastic groove matched with the elastic bulge.
In the embodiment of the present invention, the elastic structure is shown in fig. 11, fig. 11 is an orthographic view (viewed from the directly below direction) of the lower end surface of the lower adjusting sleeve 42, as shown in the figure, the lower end of the lower adjusting sleeve 42 includes four triangular protrusions 423, two elastic support arms 424, and four elastic balance protrusions 425, wherein the four triangular protrusions 423 are respectively disposed on the two elastic support arms 424, the two elastic balance protrusions 425 are uniformly distributed on the circumference, and from the whole circumference, the four triangular protrusions 423 and the two elastic balance protrusions 425 are uniformly distributed on the circumference; correspondingly, an inner gear 831 with a triangular cross section matched with the triangular protrusion 423 is arranged on the inner wall of the first cavity 83;
the technical effect is that the device can better ensure that no shaking exists in the radial direction, and can bring obvious intermittent rotation feeling to a patient when the pushing amount is adjusted, namely, the device can adjust a preset pushing amount, has a dendriable feeling on the hand and can make a sound, so that the patient can conveniently operate under the condition that the scale mark of the pushed object is not visible clearly, and the vision of many diabetics can be greatly reduced; the structure does not hinder the axial movement in pushing, and ensures the normal movement of the lower adjusting sleeve 42, namely the normal movement of the push rod 5;
further, on the basis that the structure of the elastic arm 424 has a certain elasticity, the material of the lower adjusting sleeve 42 is preferably a material with large elasticity, which is not described herein again.
As shown in fig. 1, a push button 7 is installed at the adjusting end of the housing 1, and when the push button 7 is pressed, the adjusting transmission sleeve can be pushed to move towards the output end;
the push button 7 comprises a cylinder and a brim, and the brim is positioned at the top end of the cylinder; the cylinder body can penetrate through an inner hole of the adjusting knob 3 to extrude the upper end face of the adjusting transmission sleeve; the diameter of the brim is larger than the inner hole of the adjusting knob 3;
specifically, the adjusting knob 3 is provided with a through hole for a cylinder of the pushing button 7 to pass through, so that when pushing is carried out, the cylinder of the pushing button 7 passes through the adjusting knob 3 to press the upper end surface of the adjusting transmission sleeve, and the adjusting transmission sleeve moves downwards;
in this embodiment, during pushing, the cylinder of the push button 7 presses the upper end surface of the adjusting transmission sleeve, so that on one hand, the adjusting transmission sleeve moves downward to drive the push rod 5 to move in a pushing manner, and on the other hand, the outer cylindrical gear 411 of the adjusting transmission sleeve is disengaged from the inner cylindrical gear 33 of the adjusting knob 3;
therefore, the adjusting knob 3 can be separated from the adjusting transmission sleeve to move independently, and as the diameter of the brim of the push button 7 is larger than the inner hole of the adjusting knob 3, the brim of the push button 7 extrudes the adjusting knob 3 during pushing, so that the adjusting knob 3 and the scale ring 2 make spiral descending movement together, and the scale returns to zero;
specifically, since the adjusting transmission sleeve is divided into the upper adjusting sleeve 41 and the lower adjusting sleeve 42, during the pushing process, the adjusting stabilizing ring 6 plays a role of transmitting power, when the lower end of the push button 7 presses the upper end surface of the upper adjusting sleeve 41, the upper adjusting sleeve 41 moves downward, so that the lower end of the upper adjusting sleeve 41 touches the upper end surface of the adjusting stabilizing ring 6 to push the adjusting stabilizing ring 6 to move downward, and the adjusting stabilizing ring 6 and the lower adjusting sleeve 42 are axially fixed, so that the lower adjusting sleeve 42 is driven to move downward linearly, that is, the push rod 5 is pushed to perform the pushing action.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims (12)

1. A pushing device is characterized by comprising a shell, a scale ring, an adjusting knob, an adjusting transmission sleeve, an adjusting stabilizing ring, a push rod and a pushing button; wherein, the first and the second end of the pipe are connected with each other,
one end of the shell is an output end connected with the material pushing container, and the other end of the shell is an adjusting end for adjusting the pushing amount;
the outer surface of the scale ring is provided with a pushing amount scale mark, the scale ring is installed on the inner wall of the shell, and the outer surface of the scale ring is in threaded connection with the inner wall of the shell;
the adjusting knob is arranged at the adjusting end of the shell and is fixedly connected with the scale ring, and the scale ring rotates along with the rotation of the adjusting knob;
the adjusting transmission sleeve is arranged in the shell in a penetrating way, one end of the adjusting transmission sleeve is connected with the adjusting knob, and the adjusting transmission sleeve rotates along with the rotation of the adjusting knob;
the adjusting and stabilizing ring is sleeved on the adjusting and driving sleeve, and the adjusting and stabilizing ring and the adjusting and driving sleeve are axially fixed; the outer surface of the adjusting and stabilizing ring is in threaded connection with the inner wall of the scale ring;
one end of the push rod penetrates through the adjusting transmission sleeve, the other end of the push rod extends out of the output end of the shell, and the outer surface of the push rod is in threaded connection with the inner wall of the adjusting transmission sleeve; the output end of the shell is also provided with a rotation stopping structure for limiting the rotation of the push rod, and the rotation stopping structure comprises at least one flat potential surface which is arranged on the circumference of the push rod and penetrates through the whole length;
the push button is installed the regulation end of shell, the lower extreme of push button passes adjust knob, adjust the driving sleeve and follow push button presses down to the output and removes.
2. The pushing device as claimed in claim 1, wherein the end of the adjusting and stabilizing ring facing the output end of the casing is provided with a pre-set engagement structure which is circumferentially fixed and axially non-fixed with the inner wall of the casing.
3. The push device as claimed in claim 2, wherein the outer surface of the adjusting and stabilizing ring is provided with an anti-rotation projection, and the housing is provided with an anti-rotation groove which is matched with the anti-rotation projection and extends along the axial direction.
4. The pushing device as claimed in claim 1, wherein the inner wall of the adjusting and stabilizing ring is provided with an annular elastic flange, and the outer surface of the adjusting and driving sleeve is provided with an annular groove matched with the elastic flange.
5. The pushing device according to claim 1 or 2, wherein a stop ring for controlling the pushing amount is arranged at the output end of the housing, the stop ring is fixed at a preset position on the inner wall of the housing, and the stop ring is provided with an inner hole with a diameter between the diameter of the outer circle of the push rod and the maximum diameter of the lower end of the adjusting transmission sleeve.
6. The pushing device as claimed in claim 1 or 2, wherein an outer cylindrical gear is provided at one end of the adjusting transmission sleeve, the adjusting knob is provided with an inner cylindrical gear matching with the outer cylindrical gear, and the adjusting knob drives the adjusting transmission sleeve to rotate through the meshing of the outer cylindrical gear and the inner cylindrical gear.
7. The pushing device as claimed in claim 6, wherein the adjusting transmission sleeve is provided with an elastic member for keeping the outer cylindrical gear and the inner cylindrical gear in a meshed state.
8. The pushing device as recited in claim 6, wherein the adjustment drive sleeve comprises an upper adjustment sleeve and a lower adjustment sleeve; the upper adjusting sleeve penetrates through the inner wall of the scale ring, and one end of the upper adjusting sleeve is provided with the outer cylindrical gear; the adjusting transmission sleeve is provided with an internal thread matched with the push rod, the lower adjusting sleeve is arranged in the upper adjusting sleeve in a penetrating mode, and the lower adjusting sleeve rotates along with the rotation of the upper adjusting sleeve.
9. The pushing device as claimed in claim 5, wherein the adjusting transmission sleeve comprises an upper adjusting sleeve and a lower adjusting sleeve, the inner hole of the baffle ring is axially divided into a first cavity and a second cavity, the first cavity and the second cavity are different in diameter, the diameter of the first cavity is larger than a preset threshold value of the maximum diameter of the lower end of the lower adjusting sleeve, and the diameter of the second cavity is between the diameter of the outer circle of the push rod and the maximum diameter of the lower end of the adjusting transmission sleeve.
10. The pushing device as claimed in claim 9, wherein the lower end of the lower adjusting sleeve is provided with an elastic structure for reducing radial shaking of the lower adjusting sleeve in the first cavity.
11. The pushing device as claimed in claim 10, wherein the outer circumferential surface of the lower end of the lower adjusting sleeve is provided with at least two elastic protrusions uniformly distributed along the circumference; and an elastic groove matched with the elastic bulge is formed in the inner wall of the inner hole of the baffle ring.
12. The push device of claim 1 or 2, wherein the push button includes a post and a brim, the brim being located at a top end of the post; the cylinder penetrates through the inner hole of the adjusting knob and is in contact with the end face of the adjusting transmission sleeve; the diameter of the brim is larger than the inner hole of the adjusting knob.
CN201610942116.6A 2016-11-01 2016-11-01 Pushing device Active CN106620963B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610942116.6A CN106620963B (en) 2016-11-01 2016-11-01 Pushing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610942116.6A CN106620963B (en) 2016-11-01 2016-11-01 Pushing device

Publications (2)

Publication Number Publication Date
CN106620963A CN106620963A (en) 2017-05-10
CN106620963B true CN106620963B (en) 2022-11-11

Family

ID=58821132

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610942116.6A Active CN106620963B (en) 2016-11-01 2016-11-01 Pushing device

Country Status (1)

Country Link
CN (1) CN106620963B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109125858B (en) * 2018-09-25 2023-08-08 昆山翰尔西医疗器械有限公司 Push device and syringe
CN111084918A (en) * 2018-10-24 2020-05-01 群康生技股份有限公司 Syringe with injection dosage adjusting function
CN111700717B (en) * 2020-06-30 2021-09-10 重庆西山科技股份有限公司 Bone meal propeller

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103492004A (en) * 2011-03-16 2014-01-01 贝克顿·迪金森公司 Multiple use disposable injection pen
CN105749383A (en) * 2016-04-21 2016-07-13 北京甘甘科技有限公司 Pre-filled pen-type injector

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5674204A (en) * 1995-09-19 1997-10-07 Becton Dickinson And Company Medication delivery pen cap actuated dose delivery clutch
WO2002028458A1 (en) * 2000-10-06 2002-04-11 Maxwell Edmund Whisson Body heat actuated parenteral device
DE20317377U1 (en) * 2003-11-03 2005-03-17 B D Medico S A R L injection device
CN105727400B (en) * 2016-02-03 2023-02-17 苏州翰尔西医疗器械开发有限公司 Drug delivery device
CN206675785U (en) * 2016-11-01 2017-11-28 苏州翰尔西医疗器械开发有限公司 A kind of pusher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103492004A (en) * 2011-03-16 2014-01-01 贝克顿·迪金森公司 Multiple use disposable injection pen
CN105749383A (en) * 2016-04-21 2016-07-13 北京甘甘科技有限公司 Pre-filled pen-type injector

Also Published As

Publication number Publication date
CN106620963A (en) 2017-05-10

Similar Documents

Publication Publication Date Title
CN106110443B (en) Syringe
US9539384B2 (en) Telescoping piston drive for medical infusion device
CA2813007C (en) A gearing mechanism for a dose delivery device
JP4970286B2 (en) Injection device
JP5996021B2 (en) Device for delivering liquid medication
JP5118222B2 (en) Injection device with gearbox
JP4741462B2 (en) Drive mechanism of drug delivery device
KR101113001B1 (en) Improvements in and relating to drive mechanisms suitable for use in drug delivery devices
KR102385255B1 (en) Precise and precise microliter dosing syringes
US20080221530A1 (en) Injection Device With A GearBox
CN106620963B (en) Pushing device
US20040249348A1 (en) Dose dial and drive mechanisms suitable for use in drug delivery devices
KR20060010722A (en) Improvements in and relating to a pen-type injector
CN212395535U (en) Drug delivery device
CN109125858B (en) Push device and syringe
RU130852U1 (en) MEDICINE INJECTOR
CN209548482U (en) Driving means and syringe
CN206675785U (en) A kind of pusher
CN206120870U (en) Injector
CN212491022U (en) Recyclable accurate injection pushing device
CN206675784U (en) A kind of pusher
CN106581819B (en) Injection device
CN206777588U (en) A kind of injection device
CN218652657U (en) Disposable adjustable syringe
CN212067367U (en) Injection device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20190709

Address after: No. 1038 Yuyang Road No. 1 Workshop, Kunshan, Suzhou City, Jiangsu Province, 215000

Applicant after: Kunshan Haerxi Medical Devices Co.,Ltd.

Address before: 215000 Building 5, No. 12, Shuangdeng Road, Suzhou Industrial Park, Suzhou City, Jiangsu Province

Applicant before: SUZHOU MHEALTHCARE MEDICAL EQUIPMENT DEVELOPMENT CO.,LTD.

GR01 Patent grant
GR01 Patent grant