CN219071594U - Rotary quantitative pushing type injector - Google Patents

Abstract

The utility model provides a rotary quantitative push type injector, and relates to the technical field of medical appliances. The medical nursing device comprises an outer sleeve and a drawing inner core, wherein the outer sleeve comprises a cylinder body and a movable limiting mechanism, the movable limiting mechanism is movably connected with the cylinder body, one end of the drawing inner core is located inside the cylinder body, rotating threads are arranged on the drawing inner core, when the medical nursing device is used, the outside of the movable limiting mechanism is pressed to enable the drawing inner core to move towards the inside of the cylinder body, the drawing inner core is in extrusion contact with the rotating threads on the drawing inner core to enable the drawing inner core to move rotationally relative to the cylinder body, and therefore the conventional linear scale is replaced by the record of the number of rotation of the drawing inner core, when in treatment, medical staff does not need to check the push scale of the injector repeatedly, but only needs to check the condition under an endoscope carefully, specific push medicine amount is obtained through the number of rotation, so that treatment is smoother, waste of medicine liquid is reduced, treatment cost of a patient is reduced, and meanwhile complication can be effectively reduced.

Description

Rotary quantitative pushing type injector

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a rotary quantitative pushing type injector.

Background

In clinical treatment, a syringe is required, and in some clinical treatment such as ESVD, medical staff needs to accurately dose and count at any time when pushing the medicine, and stop at any time according to the condition under an endoscope.

The applicant found that at least the following technical problems exist in the prior art: at present, the conventional syringes used in various hospitals are common syringes, and medical staff needs to repeatedly check the push scale of the syringes in a low head mode and need to check the condition under an endoscope in a high head mode during treatment, the operation mode affects accuracy, operation is not smooth, the condition of wasting liquid medicine exists, the cost of treatment of patients is increased due to the fact that the liquid medicine used by ESVD is expensive, the price of 0.5ml is 2000-3000, and the injection cannot be stopped in time, so that the local mucosa outside blood vessels at the overflow position of the liquid medicine is ulcerated and necrotized, and complications are caused.

Disclosure of Invention

The utility model aims to provide a rotary quantitative pushing type injector, which solves the technical problems of reduced injection accuracy, waste of liquid medicine and complications caused by unreasonable allocation and check modes of pushing scales and endoscope conditions of the injector in the prior art. The preferred technical solutions of the technical solutions provided by the present utility model can produce a plurality of technical effects described below.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a rotatory ration propelling movement formula syringe, includes outer sleeve and pull inner core, the outer sleeve includes barrel and activity stop gear, activity stop gear with barrel swing joint, the one end of pull inner core is located the inside of barrel, be provided with rotatory screw thread on the pull inner core, press the outside of activity stop gear can drive activity stop gear orientation the inside of barrel removes, activity stop gear can with on the pull inner core the rotatory screw thread forms extrusion contact so that the pull inner core can be relative when carrying out the propelling movement injection barrel rotary movement.

Preferably, the movable limiting mechanism comprises a limiting component and a movable pressing component, the limiting component is located inside the cylinder, the fixed end of the limiting component is connected with the inner side of the cylinder wall of the cylinder, the movable end of the limiting component corresponds to the position of the movable pressing component, the movable pressing component is movably connected with the cylinder wall of the cylinder, the movable pressing component is pressed to enable the movable pressing component to move towards the inside of the cylinder, the limiting component is contacted with the limiting component in the moving process and pushes the limiting component to move towards the inside of the cylinder, and the limiting component can form extrusion contact with the rotary threads on the drawing inner core when moving to the limiting position so that the drawing inner core can relatively rotate towards the cylinder when pushing injection.

Preferably, a protruding portion is arranged on one side, close to the drawing inner core, of the movable end of the limiting assembly, the shape of the protruding portion is matched with that of the rotary thread, and when the limiting assembly moves to the limiting position, the protruding portion can form extrusion contact with the rotary thread on the drawing inner core.

Preferably, the number of the limiting assemblies is at least two, and all the limiting assemblies are uniformly distributed along the circumferential direction of the cylinder.

Preferably, all the protruding parts on the limiting assembly are arranged in a staggered mode.

Preferably, the movable pressing component comprises a first pressing part, a movable part and a second pressing part, the first pressing part is located outside the cylinder body, the movable part penetrates through the cylinder wall of the cylinder body, two ends of the movable part are respectively connected with the first pressing part and the second pressing part, the second pressing part is located inside the cylinder body, the first pressing part drives the movable part and the second pressing part to synchronously move towards the inside of the cylinder body under the action of external force pressing, and the second pressing part can be in contact with the limiting component.

Preferably, the pull inner core comprises a rubber plug part, a core rod part and a handle part, wherein the rubber plug part is positioned in the cylinder body, the outer wall of the rubber plug part is contacted with the inner side of the cylinder wall of the cylinder body, two ends of the core rod part are respectively connected with the rubber plug part and the handle part, and the outer wall of the core rod part is provided with rotary threads along the length direction.

Preferably, the cross-sectional shape of the handle portion is elliptical.

Preferably, a limiting part is arranged at the tail end of the cylinder body, a through hole for the core rod part to pass through is formed in the center of the limiting part, the aperture of the through hole is matched with the outer diameter of the core rod part, and the thickness of the limiting part is larger than the thread width of the rotary thread.

Preferably, the injection device further comprises an injection needle connected to the end of the cylinder.

The beneficial effects of the utility model are as follows: the utility model provides a rotatory ration propelling movement formula syringe includes outer sleeve and pull inner core, the outer sleeve includes barrel and activity stop gear, activity stop gear and barrel swing joint, press activity stop gear and can make its inside removal towards the barrel, the one end of pull inner core is located the inside of barrel, be provided with rotatory screw thread on the pull inner core, when using, medical personnel can press activity stop gear's outside, drive activity stop gear and remove towards the inside of barrel, when activity stop gear removes to extreme position in the inside of barrel, can form extrusion contact with the rotatory screw thread on the pull inner core, the movable stop gear can restrict the mode of movement of pull inner core this moment, the pull inner core needs to keep rotatory screw thread all the time when removing and activity stop gear's contact, because rotatory screw shape leads to the pull inner core can relative barrel swivelling movement when carrying out the propelling movement, and then the record of the rotatory number of turns of pull inner core replaces conventional straight line scale, because the number of turns can look over just can be remedying through the vision, therefore medical personnel no longer need look over the push scale of syringe repeatedly, but need concentrate on the inside when the treatment, the condition of taking place the special medicine through the rotatory mirror, the medicine liquid medicine of the problem of the fact that the medicine of the eye is difficult to take place, the problem of the fact is reduced, the problem of the medical personnel is solved simultaneously, the medical personnel is more smooth and easy and has reduced the medical condition.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional structural view of the utility model;

FIG. 2 is a block diagram of the drawing core of the utility model;

FIG. 3 is a top view of the drawing core of the present utility model;

FIG. 4 is a block diagram of the outer sleeve of the present utility model;

in the figure 1, an outer sleeve; 11. a cylinder; 111. a limit part; 12. a movable limiting mechanism; 121. a limit component; 1211. a boss; 122. a movable pressing assembly; 1221. a first pressing portion; 1222. a movable part; 1223. a second pressing portion;

2. drawing the inner core; 21. a rubber plug part; 22. a core bar part; 221. rotating the thread; 23. a handle portion;

3. an injection needle.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be described in detail below. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, based on the examples herein, which are within the scope of the utility model as defined by the claims, will be within the scope of the utility model as defined by the claims.

In the description of the present utility model, it should be understood that the terms "center", "side", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "side", etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in fig. 1 are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model can be understood as appropriate by those of ordinary skill in the art.

Referring to fig. 1 to 4, the utility model provides a rotary quantitative push type injector, which comprises an outer sleeve 1 and a pull inner core 2, wherein the outer sleeve 1 comprises a cylinder 11 and a movable limiting mechanism 12, the movable limiting mechanism 12 is movably connected with the cylinder 11, the movable limiting mechanism 12 is pressed to enable the movable limiting mechanism 12 to move towards the inside of the cylinder 11, one end of the pull inner core 2 is positioned in the cylinder 11, a rotary thread 221 is arranged on the pull inner core 2, when in use, a medical staff can press the outside of the movable limiting mechanism 12 to drive the movable limiting mechanism 12 to move towards the inside of the cylinder 11, when the movable limiting mechanism 12 moves to a limit position in the inside of the cylinder 11, the movable limiting mechanism 12 can form extrusion contact with the rotary thread 221 on the pull inner core 2, at the moment, the movable limiting mechanism 12 can always keep the contact with the movable limiting mechanism 12 when moving, and can relatively rotate relative to the cylinder 11 when in pushing injection due to the spiral shape of the rotary thread 221, so that the number of the pull inner core 2 can replace the conventional straight line, the problem that the user can not see the medicine liquid medicine can be more easily and the medicine can not see the problem of the user through the repeated visual examination, and the repeated eye can be more easily, and the problem of the patient can be solved when the patient is not seen by the eye is in the condition of the need of the repeated visual examination;

it should be noted that, the specific pushing amount of the liquid medicine in each rotation can be calculated by the actual moving distance of the pull inner core 2 and the inner diameter of the cylinder 11 after one rotation, and such calculation is a more conventional calculation manner, so that no further development description is made;

it should be noted that, in the rotary quantitative pushing type injector according to this embodiment, the spiral inclination angle of the rotary thread 221 is changed by the change of the diameter of the cylinder 11, so as to correspond to the actual pushing amount of the liquid medicine in each rotation, and design injectors with different specifications and styles, thereby meeting the actual use requirements in clinical treatment;

in addition, it should be noted that, if the medical staff does not press the movable limiting mechanism 12 during use, the rotary quantitative push type injector in this embodiment can still be used normally, which is equivalent to a conventional injector, and conventional injection operation is completed by pulling the pull inner core 2, so that the basic functions of the product are enriched.

As an alternative embodiment, the movable limiting mechanism 12 includes a limiting component 121 and a movable pressing component 122, the limiting component 121 is located inside the cylinder 11, the fixed end of the limiting component is connected with the inner side of the cylinder wall of the cylinder 11, the movable end of the limiting component corresponds to the position of the movable pressing component 122, the movable end is the pressed end, and the limiting component 121 is preferably made of plastic material with certain elasticity, so that the limiting component has deformability, and the movable end can relatively move;

the movable pressing component 122 is movably connected with the wall of the barrel 11, the movable pressing component 122 can be moved towards the inside of the barrel 11 by pressing the outside of the movable pressing component 122, the movable pressing component 122 is contacted with the limiting component 121 in the moving process and pushes the limiting component 121 to move towards the inside of the barrel 11, and when the limiting component 121 moves to the limiting position, the limiting component can form extrusion contact with the rotary threads 221 on the drawing inner core 2 so that the drawing inner core 2 can move rotationally relative to the barrel 11 when pushing injection is carried out.

As an alternative embodiment, a protruding portion 1211 is disposed on a side of the movable end of the limiting component 121, which is close to the drawing inner core 2, and the shape of the protruding portion 1211 is matched with that of the rotary thread 221, in this embodiment, a semicircular spherical structure is preferred, and when the limiting component 121 moves to the limiting position, the protruding portion 1211 can be mutually engaged with the rotary thread 221 on the drawing inner core 2, so as to form extrusion contact.

As an alternative embodiment, the number of the limiting assemblies 121 is at least two, and two or more limiting assemblies 121 can form a good limiting effect on the drawing inner core 2, and all the limiting assemblies 121 are uniformly distributed along the circumferential direction of the cylinder 11, so that the overall stress is more uniform.

As an alternative embodiment, since the rotation threads 221 are spatially spiral, and the spacing components 121 are uniformly distributed, in order that all the spacing components 121 can simultaneously engage with the rotation threads 221 to apply pressure to the drawing core 2, the protrusions 1211 on all the spacing components 121 need to be staggered to spatially correspond to the distribution of different positions of the spiral rotation threads 221.

As an alternative embodiment, the movable pressing assembly 122 includes a first pressing portion 1221, a movable portion 1222 and a second pressing portion 1223, where the first pressing portion 1221 is located outside the cylinder 11, the movable portion 1222 passes through the cylinder wall of the cylinder 11 and two ends of the movable portion 1222 are connected to the first pressing portion 1221 and the second pressing portion 1223, respectively, and the second pressing portion 1223 is located inside the cylinder 11, and the first pressing portion 1221 presses the movable portion 1222 and the second pressing portion 1223 under an external force to move synchronously toward the inside of the cylinder 11, and the second pressing portion 1223 can contact the limiting assembly 121, so that the number of the movable portions 1222 is preferably two, and the stress is more uniform.

As an alternative embodiment, the drawing inner core 2 includes a rubber plug portion 21, a core rod portion 22 and a handle portion 23, the rubber plug portion 21 is located inside the barrel 11 and the outer wall thereof contacts with the inner side of the barrel wall of the barrel 11, the rubber plug portion 21 divides the inside of the barrel 11 into a front cavity with injection and a rear cavity provided with a movable limiting mechanism 12, two ends of the core rod portion 22 are respectively connected with the rubber plug portion 21 and the handle portion 23, the outer wall of the core rod portion 22 is provided with a rotary thread 221 along the length direction, the handle portion 23 is used for holding by hands of medical staff, and the core rod portion 22 and the rubber plug portion 21 can be driven to rotate by rotating the handle portion 23.

As an alternative embodiment, the cross-sectional shape of the handle portion 23 is oval, which is advantageous for gripping, while at the same time being advantageous for the healthcare staff to distinguish the specific rotation state of the handle portion 23, which enables easier registration of the number of turns that have been rotated than round.

As an alternative embodiment, the end of the cylinder 11 is provided with a limit part 111, the center of the limit part 111 is provided with a through hole for the core rod part 22 to pass through, the aperture of the through hole is matched with the outer diameter of the core rod part 22, and on the basis that the front end of the core rod part 22 can realize the limit of the core rod part 22 in the circumferential direction through the rubber plug part 21, the rear end of the core rod part 22 can realize the limit of the core rod part 22 in the circumferential direction through the limit part 111 by arranging the limit part 111;

when the rotating thread 221 on the core rod portion 22 is just located at the through hole of the limiting portion 111, since the outer wall size of the rotating thread 221 cannot be matched with the through hole aperture size of the limiting portion 111 normally, the thickness of the limiting portion 111 is preferably larger than the thread width of the rotating thread 221, so that when the rotating thread 221 is just located at the through hole of the limiting portion 111, the size matching with the through hole size of the limiting portion 111 can be achieved by means of the conventional structure of the core rod portion 22 located at two ends of the through hole, so that a good limiting effect is ensured.

As an alternative embodiment, the injection needle 3 is further included, the injection needle 3 is connected to the end of the barrel 11, and the structure and connection manner of the injection needle 3 are conventional in the prior art, so that no further development description is made.

The foregoing is merely illustrative embodiments of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art can easily think about variations or substitutions within the technical scope of the present utility model, and the utility model should be covered. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (10)

1. A rotary dosing push type syringe, characterized by comprising an outer sleeve (1) and a pull core (2), wherein: the outer sleeve (1) comprises a cylinder body (11) and a movable limiting mechanism (12), the movable limiting mechanism (12) is movably connected with the cylinder body (11), one end of the drawing inner core (2) is located inside the cylinder body (11), a rotary thread (221) is arranged on the drawing inner core (2), the movable limiting mechanism (12) is pressed, the movable limiting mechanism (12) can be driven to move towards the inside of the cylinder body (11) by pressing, and the movable limiting mechanism (12) can form extrusion contact with the rotary thread (221) on the drawing inner core (2) when moving to the limit position so that the drawing inner core (2) can relatively move rotationally with respect to the cylinder body (11) during pushing injection.

2. The rotary, metered dose push syringe of claim 1, wherein: the movable limiting mechanism (12) comprises a limiting component (121) and a movable pressing component (122), the limiting component (121) is located inside the cylinder body (11), the fixed end of the limiting component is connected with the inner side of the cylinder wall of the cylinder body (11), the movable end of the limiting component corresponds to the position of the movable pressing component (122), the movable pressing component (122) is movably connected with the cylinder wall of the cylinder body (11), the movable pressing component (122) is pressed, the movable pressing component (122) can move towards the inside of the cylinder body (11) due to the fact that the movable pressing component (122) moves towards the inside of the cylinder body (11), the limiting component (121) is contacted with the limiting component (121) and pushes the limiting component (121) to move towards the inside of the cylinder body (11), and when the limiting component (121) moves to the limiting position, the movable pressing component (122) forms extrusion contact with the rotary threads (221) on the drawing inner core (2) during pushing injection.

3. The rotary, metered dose push syringe of claim 2, wherein: a protruding portion (1211) is arranged on one side, close to the drawing inner core (2), of the movable end of the limiting assembly (121), the shape of the protruding portion (1211) is matched with that of the rotary thread (221), and when the limiting assembly (121) moves to the limiting position, the protruding portion (1211) can form extrusion contact with the rotary thread (221) on the drawing inner core (2).

4. A rotary, metered dose push syringe as defined in claim 3, wherein: the number of the limiting assemblies (121) is at least two, and all the limiting assemblies (121) are uniformly distributed along the circumferential direction of the cylinder body (11).

5. The rotary, metered dose push syringe of claim 4, wherein: all the protruding parts (1211) on the limiting component (121) are arranged in a staggered mode.

6. The rotary, metered dose push syringe of claim 2, wherein: the movable pressing assembly (122) comprises a first pressing part (1221), a movable part (1222) and a second pressing part (1223), wherein the first pressing part (1221) is located outside the cylinder body (11), the movable part (1222) penetrates through the cylinder wall of the cylinder body (11) and two ends of the movable part (1222) are respectively connected with the first pressing part (1221) and the second pressing part (1223), the second pressing part (1223) is located inside the cylinder body (11), the first pressing part (1221) drives the movable part (1222) and the second pressing part (1223) to move synchronously towards the inside of the cylinder body (11) under the action of external force pressing, and the second pressing part (1223) can be in contact with the limiting assembly (121).

7. The rotary, metered dose push syringe of claim 1, wherein: the drawing inner core (2) comprises a rubber plug portion (21), a core rod portion (22) and a handle portion (23), wherein the rubber plug portion (21) is located inside the cylinder body (11) and the outer wall of the rubber plug portion is in contact with the inner side of the cylinder wall of the cylinder body (11), two ends of the core rod portion (22) are respectively connected with the rubber plug portion (21) and the handle portion (23), and rotary threads (221) are formed in the outer wall of the core rod portion (22) along the length direction.

8. The rotary, metered dose push syringe of claim 7, wherein: the cross-sectional shape of the handle part (23) is elliptical.

9. The rotary, metered dose push syringe of claim 7, wherein: the end of the cylinder body (11) is provided with a limiting part (111), a through hole for the core rod part (22) to pass through is formed in the center of the limiting part (111), the aperture of the through hole is matched with the outer diameter of the core rod part (22), and the thickness of the limiting part (111) is larger than the thread width of the rotary thread (221).

10. The rotary, metered dose push syringe of claim 1, wherein: the injection device further comprises an injection needle (3), wherein the injection needle (3) is connected to the end part of the cylinder body (11).

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