CN212679781U

CN212679781U - Safety trigger for precision instrument

Info

Publication number: CN212679781U
Application number: CN202021195620.2U
Authority: CN
Inventors: 周涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-12
Anticipated expiration: 2030-06-24

Abstract

This patent relates to the field of medical equipment, in particular to safe trigger device for precision instruments, includes: the device comprises a base, a push rod, a device connecting sleeve and a trigger control sleeve; the base is movably connected with the device connecting sleeve to form a power cavity, the push rod is positioned in the power cavity, and the control sleeve is triggered to be connected with the base; by using the device disclosed by the invention, the operations such as medicine injection can be automatically triggered, the related operation steps and the operation errors and medical accidents caused by the operation steps are reduced, and the potential safety hazard caused by the fact that medical staff mistakenly use an injector to inject other medicines due to errors can be prevented.

Description

Safety trigger for precision instrument

Technical Field

The patent relates to the field of medical equipment, in particular to a safety trigger for a precision instrument.

Background

With the development of science and technology, population growth and aging, the development space of medical instruments is large. Currently, a variety of automatic injection devices have been developed internationally. The device may be used to self-administer an injection or to administer an injection for another person, merely requiring that the device be triggered. Many of the current versions of auto-injectors are single-use, but some also allow reloading of hypodermic cartridges (hypodermic cartridges).

In autoinjectors, there are many different types of triggering, including button triggering and squeeze triggering. The button triggering mode is that a medical staff or a patient pushes a button of the automatic injector so as to inject the medicine in the injector into a human body. The squeeze trigger mode is to use the pressure generated between the device and the injection site (thigh, abdomen, etc.) to open the automatic injector and thus inject the drug into the body. However, when the automatic injector is triggered by the button, the user may press the injection button by mistake, so that the automatic injector is started at a position other than the injection point, thereby causing waste of the injected medicine and potential medical hazards due to wrong injection positions. When the automatic injector adopting extrusion triggering is used, a needle head can be placed at an injection position, and if the extrusion is not in place, the injection cannot be started, and the needle stick injury can be caused. After the injection is finished, the medical apparatus which is partially used needs to be safely recycled, but how to determine that the device is injected with other medicines for repeated use after being used causes medical hidden trouble. Therefore, a safety trigger for solving the above problems is urgently needed.

Disclosure of Invention

To solve the above problems of the prior art, this patent designs a safety trigger for a precision instrument, the device comprising: the device comprises a base 1, a push rod 2, a device connecting sleeve 3 and a trigger control sleeve 4; the base 1 is movably connected with the device connecting sleeve 3 to form a power cavity, the push rod 2 is positioned in the power cavity, and the trigger control sleeve 4 is connected with the base 1.

Preferably, the base 1 comprises a hollow cylindrical cap 11; a hollow column body 12 is arranged on the inner side of the top surface of the column body cap; strip-shaped brackets 13 are symmetrically arranged on the cap edges at the two sides of the column cap 11; a first buckle 14 is fixed on each strip-shaped bracket 13.

Preferably, the first buckle 14 comprises a connecting plate 141 and a protruding structure, the connecting plate 141 of the first buckle 14 is fixed in the connecting hole of the bar bracket 13, and the protruding structure comprises an inner protruding structure 142 and an outer protruding structure 143; the inner projection 142 is located on the inner side of the web 141 and the outer projection 143 is located on the outer side of the web 141.

Further, the connection plate 141 is made of an elastic material, and if pressure is applied to the outer protrusion structure 143, the connection plate 141 is elastically deformed inward; when pressure is applied to the inner protrusion 142, the connection plate 141 is elastically deformed to the outside.

Preferably, the push rod 2 comprises a cylinder 21, a first disc 22 and a spring 23; the first disc 22 is sleeved on the cylinder 21, and the first disc 22 is close to the upper part of the cylinder 21; the spring 23 is sleeved on the upper part of the column 21, and the bottom of the spring 23 is connected with the first disc 22.

Preferably, the device connecting sleeve 3 comprises: a first sleeve 31, a second disc 32 and two second bar supports 33; a circular hole 321 is formed in the center of the second disk 32, and the second disk 32 is embedded in the inner cavity of the first sleeve 31; the front side and the rear side of the first sleeve 31 are respectively provided with a second convex structure 311; two second bar brackets 33 are fixed to the left and right sides of the sleeve 31, respectively.

Preferably, the base 1 and the device connecting sleeve 3 are movably connected to form a power cavity, and the power cavity comprises: the first sleeve 31 of the device connecting sleeve is arranged between the two strip-shaped supports 13 of the base, the second protruding structure 311 of the first sleeve is movably connected with the inner protruding structure 142 of the strip-shaped support, and the cylinder cap 11 of the base and the first sleeve 31 of the device connecting sleeve form a power cavity.

Preferably, the push rod 2 is located inside the power cavity and comprises: the spring 23 of the push rod, the first disk 22 and the cylinder 21 positioned above the first disk are arranged in the power cavity; the cylinder 21 located at the lower portion of the first disc is inserted into the circular hole 321 of the second disc of the device connecting sleeve 3.

Preferably, the trigger control sleeve 4 comprises: a second sleeve 41 and two third elongated brackets 42; a through hole 421 is formed in the middle of the third elongated bracket 42, and a blocking piece 422 is arranged at the top of the third elongated bracket 42; the bottoms of the two third elongated brackets 42 are fixed to the tops of the front and rear sides of the second sleeve 41, respectively.

Preferably, the connection of the trigger control sleeve 4 with the base 1 comprises: the trigger control sleeve 4 is arranged outside the base 1, the third strip-shaped support 42 of the trigger control sleeve 4 is attached to the strip-shaped support 13 of the base 1, and the stop piece 422 of the third strip-shaped support 42 is fixedly connected with the outer protruding structure 143 of the first buckle 14, so that the base 1 is prevented from being separated from the trigger control sleeve 4.

The safety trigger is matched with the medical injector for use, so that the safe automatic injection function is realized, and the injection depth and the injection medicine dosage can be accurately controlled; when the syringe is not needed to be used, the device is in a self-locking state, safe transportation and storage are realized, medical accidents such as needle stick injuries and the like caused by errors or carelessness of medical workers or patients are prevented, and the safe recovery and treatment of instruments are facilitated.

Drawings

FIG. 1 is a diagram of the device structure of this patent;

FIG. 2 is an oblique view of the base of the present patent;

FIG. 3 is a front view of the base of the present patent;

FIG. 4 is a view of the connection of the cylinder to the first disk of the present patent;

FIG. 5 is a front view of the connection sleeve of the device of this patent;

FIG. 6 is a diagram of a trigger control sleeve according to the present patent;

FIG. 7 is a structure of the device of this patent after triggering;

FIG. 8 shows the device in a locked state;

the device comprises a base 1, a base 11, a cylinder cap 111, small holes 12, a hollow cylinder 121, inner cavity holes 13, a strip-shaped support 14, a first buckle 141, a connecting plate 142, an inner convex structure 143, an outer convex structure 2, a push rod 21, a cylinder 22, a first disc 23, a spring 3, a device connecting sleeve 31, a first sleeve 311, a second convex structure 32, a second disc 321, a round hole 33, a second strip-shaped support 331, a second inner buckle 4, a trigger control sleeve 41, a second sleeve 411, an annular rib 42, a third strip-shaped support 421, a through hole 422, a blocking piece 423 and an outer rib.

Detailed Description

The technical solutions in the embodiments of the present patent will be clearly and completely described below with reference to the drawings in the embodiments of the present patent, and it is obvious that the described embodiments are only some embodiments of the present patent, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the scope of protection of this patent.

A safety trigger for a precision instrument, as shown in figure 1, the device comprising: the device comprises a base 1, a push rod 2, a device connecting sleeve 3 and a trigger control sleeve 4; the base 1 is movably connected with the device connecting sleeve 3 to form a power cavity, the push rod 2 is positioned in the power cavity, and the trigger control sleeve 4 is connected with the base 1.

As shown in fig. 2 to 3, the base 1 includes a hollow cylindrical cap 11; a hollow column body 12 is arranged on the inner side of the top surface of the column body cap; strip-shaped brackets 13 are symmetrically arranged on the cap edges at the two sides of the column cap 11; a first buckle 14 is fixed on each strip-shaped bracket 13.

Preferably, the top surface of the cylinder cap 11 is provided with a small hole 111; the center point of the small hole 111 and the center point of the inner cavity hole 121 of the cylinder 12 are located on the same vertical line, and the area of the small hole 111 is smaller than that of the inner cavity hole 121 of the hollow cylinder 12. The aperture 111 can be used to see if the cylinder 21 inserted into the lumen of the hollow body 12 is detached, thus ensuring that the device is assembled correctly.

Preferably, the cylinder cap 11 is a hollow cylinder.

Preferably, the inner surface and the outer surface of the bar bracket 13 are both arc-shaped surfaces.

The strip-shaped bracket 13 is provided with a connecting hole.

The first buckle 14 comprises a connecting plate 141 and a convex structure, the connecting plate 141 of the first buckle 14 is fixed in the connecting hole of the bar-shaped bracket 13, and the convex structure comprises an inner convex structure 142 and an outer convex structure 143; the inner projection 142 is located on the inner side of the web 141 and the outer projection 143 is located on the outer side of the web 141.

The connection plate 141 is made of an elastic material, and if a pressure is applied to the outward protruding structure 143, the first buckle 14 moves inward; if pressure is applied to the inwardly protruding structure 142, the first catch 14 moves outwardly.

Preferably, the base 1 is a one-time injection molded plastic part.

As shown in fig. 4, the push rod 2 includes a cylinder 21, a first disc 22, and a spring 23; the first disc 22 is sleeved on the cylinder 21, and the first disc 22 is close to the upper part of the cylinder 21; the spring 23 is sleeved on the upper part of the column 21, and the bottom of the spring 23 is connected with the first disc 22.

Preferably, the upper surface and the lower surface of the first disc 22 are provided with friction lines. The upper surface friction lines of the first disk are used for preventing the spring 23 from sliding on the upper surface of the first disk 22; the friction texture of the lower surface of the first disc allows a better contact between the lower surface of the first disc 23 and the upper surface of the second disc 32, preventing the two discs from sliding on each other.

Preferably, the cylinder 21 is provided with an external thread, and the central hole of the first disk 22 is internally provided with an internal thread matched with the external thread on the cylinder 21. By rotating the first disc 22, the position of the first disc 22 can be adjusted to meet the requirements of different devices.

Preferably, the cylinder 21 is provided with a scale by means of which the position of the first disc can be determined, and the device can be adjusted better.

As shown in fig. 5, the device connecting sleeve 3 includes: a first sleeve 31, a second disc 32 and two second bar supports 33; a circular hole 321 is formed in the center of the second disk 32, and the second disk 32 is embedded in the inner cavity of the first sleeve 31; the front side and the rear side of the first sleeve 31 are respectively provided with a second convex structure 311; two second bar brackets 33 are fixed to the left and right sides of the sleeve 31, respectively.

A second inner buckle 331 is arranged inside the second bar bracket 33; the second inner snap 331 is used to connect with a precision instrument.

The inner surface and the outer surface of the second bar bracket 33 are both arc-shaped surfaces.

As shown in fig. 6, the trigger control sleeve 4 includes: a second sleeve 41 and a third elongate support 42; a through hole 421 is formed in the middle of the third elongated bracket 42, and a blocking piece 422 is arranged at the top of the third elongated bracket 42; the bottom of the third elongated bracket 42 is connected to the top of the second sleeve 41.

The baffle 422 is a transition oblique angle baffle, that is, the inner side of the transition oblique angle baffle is provided with an arc-shaped inclined surface, so that the trigger control sleeve 4 is more easily connected with the base 1.

The inner surface and the outer surface of the third elongated bracket 42 are both arc-shaped surfaces.

The outer ribs 423 are arranged outside the third elongated bracket 42; the three elongated brackets 42 are stabilized by the outer ribs 423.

The upper portion of the third elongated bracket 42 is provided with a bevel which makes the connection of the trigger control sleeve 4 to the base 1 more stable.

Preferably, the through hole 421 is a rectangular through hole, and the size of the through hole is larger than the protruding structure of the first buckle 14.

Optionally, an annular rib 411 is arranged on the outer side of the second sleeve 41; by applying a pushing force to the annular rib 411, the second sleeve 41 is moved in the direction of the pushing force, and the device is activated.

Base 1 and device adapter sleeve 3 swing joint form power cavity and include: the first sleeve 31 of the device connecting sleeve is arranged between the two strip-shaped supports 13 of the base, the second protruding structure 311 of the first sleeve is movably connected with the inner protruding structure 142 of the strip-shaped support, and the cylinder cap 11 of the base and the first sleeve 31 of the device connecting sleeve form a power cavity.

The push rod 2 is located inside the power cavity and comprises: the spring 23 of the push rod, the first disk 22 and the cylinder 21 positioned above the first disk are arranged in the power cavity; the cylinder 21 located at the lower portion of the first disc is inserted into the circular hole 321 of the second disc of the device connecting sleeve 3.

The process of assembly of the device includes: the upper part of the column 21 of the push rod 2 is inserted into the inner cavity of the hollow column 12 of the base 1, and the upper part of the spring 23 is sleeved outside the hollow column 12; inserting the lower part of the cylinder 21 of the push rod 2 into the circular hole 321 of the second disc of the device connecting sleeve 3, so that the lower surface of the first disc 22 is attached to the upper surface of the second disc 32; the second protrusion 311 of the device connecting sleeve 3 is in snap-fit connection with the inner protrusion 142 of the base. The trigger control sleeve 4 is arranged outside the base 1, the third strip-shaped support 42 of the trigger control sleeve 4 is attached to the strip-shaped support 13 of the base 1, and the blocking piece 422 of the third strip-shaped support 42 is fixedly connected with the outer protruding structure 143 of the first buckle 14, so that the base 1 is prevented from being separated from the trigger control sleeve 4, and the device assembly is completed.

As shown in fig. 7, in the initial state of the device, the spring 23 is compressed between the base 1 and the push rod 2, and the first disk 22 and the second disk 32 are tightly attached together under the pressure of the spring 23; the outer convex structure 143 of the first buckle 14 is tightly attached to the inner surface of the third elongated bracket 42; the inner protrusion 142 of the first buckle 14 is fixed with the second protrusion 311 of the device connecting sleeve 3. In the triggered state of the device: the annular ribs 411 of the trigger control sleeve 4 drive the trigger control sleeve 4 to slide towards the base under the action of external force; when the trigger control sleeve 4 slides for a certain distance, the outer convex structure 143 of the base 1 slides into the through hole 421 of the trigger control sleeve 4, so as to fix the positions of the base 1 and the trigger control sleeve 4; at this time, under the action of the spring pressure, the first buckle is not shielded by the third strip-shaped support 42, so that the second protrusion structure 311 of the device connecting sleeve 3 applies an outward force to the first buckle of the base, the first buckle is deformed, and the second protrusion structure 311 is separated from the inner protrusion structure 142 of the base; under the action of the pressure of the spring, the device connecting sleeve 3 and the push rod 2 are pushed to move together in the direction departing from the base; meanwhile, the precision instrument fixed with the device connecting sleeve 3 through the second inner buckle 311 moves along the same direction; and finishing the corresponding operation process.

As shown in fig. 8, after the device operation is completed, the device is safely locked, which includes the following processes: disengaging the outer protrusion 143 of the base 1 from the through hole 421 of the trigger control sleeve 4, and moving the trigger control sleeve 4 away from the base 1; when the stop piece 422 of the trigger control sleeve 4 slides into the outer protruding structure 143 of the base 1, the trigger control sleeve 4 is fixed with the base 1, and the safety locking of the device is completed.

In the description of this patent, it is to be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "one side," "top," "inner," "outer," "front," "center," "two ends," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the patent and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the patent.

In this patent, unless expressly stated or limited otherwise, the terms "mounted," "disposed," "connected," "secured," "rotated," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate, or they may be connected internally or in an interactive relationship with each other, and unless otherwise specifically limited, the specific meaning of the above terms in this patent will be understood by those skilled in the art according to the specific circumstances.

The above-mentioned embodiments, which have been described in further detail for the purpose of illustrating the invention and the purpose and advantages thereof, are understood that the present invention is not limited to the above-mentioned embodiments, but rather is intended to cover all modifications, equivalents, improvements and equivalents within the spirit and scope of the appended claims.

Claims

1. A safety trigger for a precision instrument, comprising: the device comprises a base (1), a push rod (2), a device connecting sleeve (3) and a trigger control sleeve (4); the base (1) is movably connected with the device connecting sleeve (3) to form a power cavity, the push rod (2) is located in the power cavity, and the control sleeve (4) is triggered to be connected with the base (1).

2. A safety trigger for a precision instrument according to claim 1, wherein the base (1) comprises a hollow cylindrical cap (11); a hollow column (12) is arranged on the inner side of the top surface of the column cap; strip-shaped brackets (13) are symmetrically arranged on the cap edges at the two sides of the column cap (11); a first buckle (14) is fixed on each strip-shaped bracket (13).

3. A safety trigger for a precision instrument according to claim 2, characterized in that the first catch (14) comprises a connecting plate (141) and a protruding structure, the connecting plate (141) of the first catch (14) being fixed in the connecting hole of the bar bracket (13), the protruding structure comprising an inner protruding structure (142) and an outer protruding structure (143); the inner convex structures (142) are positioned on the inner sides of the connecting plates (141), and the outer convex structures (143) are positioned on the outer sides of the connecting plates (141).

4. A safety trigger for a precision instrument according to claim 3, wherein the web (141) is of a resilient material, the web (141) being resiliently deformable inwardly on application of pressure to the outer protrusion (143); when pressure is applied to the inner protrusion structure (142), the connection plate (141) is elastically deformed outward.

5. A safety trigger for a precision instrument according to claim 1, wherein the push rod (2) comprises a cylinder (21), a first disc (22) and a spring (23); the first disc (22) is sleeved on the cylinder (21), and the first disc (22) is close to the upper part of the cylinder (21); the spring (23) is sleeved on the upper part of the cylinder (21), and the bottom of the spring (23) is connected with the first disc (22).

6. A safety trigger for a precision instrument according to claim 1, wherein the implement coupling sleeve (3) comprises: a first sleeve (31), a second disc (32) and two second strip-shaped brackets (33);

a round hole (321) is formed in the center of the second disc (32), and the second disc (32) is embedded in the inner cavity of the first sleeve (31); the front side and the rear side of the first sleeve (31) are respectively provided with a second convex structure (311); two second strip-shaped brackets (33) are respectively fixed at the left side and the right side of the sleeve (31).

7. A safety trigger for a precision instrument according to claim 1, wherein the base (1) is movably connected with the device connecting sleeve (3) to form a power cavity comprising: the first sleeve (31) of the device connecting sleeve is arranged between the two strip-shaped supports (13) of the base, the second protruding structure (311) of the first sleeve is movably connected with the inner protruding structure (142) of each strip-shaped support, and the cylinder cap (11) of the base and the first sleeve (31) of the device connecting sleeve form a power cavity.

8. A safety trigger for a precision instrument according to claim 1, wherein the push rod (2) inside the power cavity comprises: a spring (23) of the push rod, a first disc (22) and a cylinder (21) positioned above the first disc are arranged in the power cavity; a cylinder (21) positioned below the first disk is inserted into a round hole (321) of the second disk of the device connecting sleeve (3).

9. A safety trigger for a precision instrument according to claim 1, wherein the trigger control sleeve (4) comprises: a second sleeve (41) and two third elongated brackets (42); a through hole (421) is formed in the middle of the third strip-shaped support (42), and a blocking piece (422) is arranged at the top of the third strip-shaped support (42); the bottoms of the two third elongated brackets (42) are respectively fixed on the tops of the front side and the rear side of the second sleeve (41).

10. A safety trigger for a precision instrument according to claim 1, wherein the connection of the trigger control sleeve (4) to the base (1) comprises: the trigger control sleeve (4) is arranged outside the base (1), the third strip-shaped support (42) of the trigger control sleeve (4) is attached to the strip-shaped support (13) of the base (1), and the blocking piece (422) of the third strip-shaped support (42) is fixedly connected with the outer protruding structure (143) of the first buckle (14) to prevent the base (1) from being separated from the trigger control sleeve (4).