CN115608431A

CN115608431A - Injection stopper

Info

Publication number: CN115608431A
Application number: CN202211629225.4A
Authority: CN
Inventors: 李莹; 陈丽萍; 吴海涛
Original assignee: Academy of Military Medical Sciences AMMS of PLA
Current assignee: Academy of Military Medical Sciences AMMS of PLA
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-01-17
Anticipated expiration: 2042-12-19
Also published as: CN115608431B

Abstract

The invention discloses an injection limiter which comprises a limiting sleeve and a shearing assembly, wherein one end of the limiting sleeve is connected with the shearing assembly, and the other end of the limiting sleeve is connected with an injector; the shearing assembly comprises a fixing part and a circular cutting part, one end of the fixing part is connected with the injector, the other end of the fixing part is connected with one end of the circular cutting part, and the other end of the circular cutting part is connected with the limiting sleeve. The invention has the beneficial effects that: compared with the existing injection limiter, the technical scheme of the invention realizes visualization and accuracy of the injection depth when experimenters use the injector to inject through arranging the limiting sleeve and the shearing assembly, thereby accurately positioning the injection position to the expected depth in the actual operation process.

Description

Injection stopper

Technical Field

The invention belongs to the technical field of medical instruments, and particularly relates to an injection limiter.

Background

Microsyringes are widely used in medical and biological related experimental procedures. At present, the depth of needle insertion when the microinjector is used needs to be estimated by experience of operators, and the standard of visualization precision is difficult to achieve, so that the injection position is difficult to be accurately positioned to the expected depth in the actual operation process. The present invention is therefore directed to the above problems and provides an injection stop.

Disclosure of Invention

In order to overcome the problems in the background art, the invention adopts the following technical scheme:

an injection limiter comprises a limiting sleeve and a shearing assembly, wherein one end of the limiting sleeve is connected with the shearing assembly, and the other end of the limiting sleeve is connected with an injector; the shearing assembly comprises a fixing part and a circular cutting part, one end of the fixing part is connected with the injector, the other end of the fixing part is connected with one end of the circular cutting part, and the other end of the circular cutting part is connected with the limiting sleeve.

In some embodiments of the present application, the circular cutting component is provided with a circular cutting blade and a rotating component, the circular cutting blade is connected with one end of the rotating component, and the other end of the rotating component is connected with the circular cutting component.

Furthermore, a limiting rod and a moving rod are arranged on the circular cutting blade, a limiting groove is formed in the circular cutting part, a moving groove is formed in the rotating part, one end of the limiting rod is connected with the circular cutting blade, the other end of the limiting rod is connected with the limiting groove, one end of the moving rod is connected with the circular cutting blade, and the other end of the moving rod is connected with the moving groove.

In some embodiments of the present application, a retaining member is provided on the circular cutting member, one end of the retaining member is connected to the circular cutting member, and the other end of the retaining member is connected to the rotating member.

Furthermore, a fixing rod and a positioning rod are arranged on the circular cutting component, one end of the fixing rod is connected with one end of the positioning rod, the other end of the fixing rod is connected with the circular cutting component, and the other end of the positioning rod is connected with the fixing component.

In some embodiments of the application, last through-hole one, the second through-hole and the locating part of being equipped with of fixed part, the both ends of locating part run through respectively through-hole one and the second through-hole, the locating part with fixed part swing joint, locating lever one with through-hole one is connected, locating lever two with through-hole two is connected, the locating part with locating lever one and the equal swing joint of locating lever two.

In some embodiments of the present application, a first through hole, a second through hole and a spring are arranged on the positioning component, the first through hole is communicated with the first through hole, the first positioning rod is movably connected with the first through hole and the first through hole, the second through hole is communicated with the second through hole, the second positioning rod is movably connected with the second through hole and the second through hole, one end of the spring is connected with the positioning component, and the other end of the spring is connected with the fixing component.

The invention has the beneficial effects that: compared with the existing injection limiter, the technical scheme of the invention realizes visualization and accuracy of the injection depth when experimenters use the injector to inject through arranging the limiting sleeve and the shearing assembly, thereby accurately positioning the injection position to the expected depth in the actual operation process.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a position limiting sleeve according to the present invention;

FIG. 3 is a schematic view of the shear assembly of the present invention;

FIG. 4 is a schematic view of the ring cutting member and the rotating member of the present invention;

FIG. 5 is a schematic view of the ring cutting member and ring cutting blade configuration of the present invention;

FIG. 6 is a schematic view of a spacing groove structure according to the present invention;

FIG. 7 is a schematic view of a ring-cutting blade according to the present invention;

FIG. 8 is a schematic view of a rotating member according to the present invention;

FIG. 9 is a structural cross-sectional view of an annular cutting member of the present invention;

FIG. 10 is a schematic view of a fixing member according to the present invention;

FIG. 11 is a schematic view of a positioning member according to the present invention;

FIG. 12 is a sectional view of a fixing member according to the present invention;

in the figure, 1, a needle head part; 11. a needle tube portion; 2. a fixing member; 21. a third through hole; 22. a positioning member; 221. a first through hole; 222. a second through hole; 23. a first through hole; 24. a second through hole; 25. a spring; 3. a ring cutting member; 31. a rotating member; 311. a moving groove; 312. a locking hole; 3121. a locking member; 32. a first positioning rod; 321. positioning a line; 33. a second positioning rod; 34. a ring cutting blade; 341. a travel bar; 35. a first fixing rod; 36. a second fixing rod; 37. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below by specific embodiments, and it is obvious that the embodiments described are only a part of the embodiments of the present invention, rather than all embodiments, and other advantages and efficacies of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. The present invention can be implemented or applied by other different specific embodiments, and the features in the following embodiments and examples can be combined with each other without conflict, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts based on the embodiments in the present invention shall fall within the protection scope of the present invention.

Fig. 1-12 illustrate the general technical content of the present embodiment, which provides an injection stopper comprising a stopper sleeve and a shearing assembly, one end of the stopper sleeve being connected to the shearing assembly, and the other end of the stopper sleeve being connected to an injector. More specifically, the shearing assembly comprises a fixing part 2 and a circular cutting part 3, wherein one end of the fixing part 2 is connected with the injector, the other end of the fixing part 2 is connected with one end of the circular cutting part 3, and the other end of the circular cutting part 3 is connected with the limiting sleeve.

In the embodiment, the circular cutting part 3 is provided with a circular cutting blade 34 and a rotating part 31, the circular cutting blade 34 is connected with one end of the rotating part 31, and the other end of the rotating part 31 is connected with the circular cutting part 3. More specifically, a limiting rod and a moving rod 341 are arranged on the circular cutting blade 34, a limiting groove 37 is arranged on the circular cutting part 3, a moving groove 311 is arranged on the rotating part 31, one end of the limiting rod is connected with the circular cutting blade 34, the other end of the limiting rod is connected with the limiting groove 37, one end of the moving rod 341 is connected with the circular cutting blade 34, and the other end of the moving rod 341 is connected with the moving groove 311. The ring cutting blades 34 are provided with at least two, preferably, the ring cutting blades 34 in the embodiment are provided with six, the moving grooves 311 are also provided with six, the six ring cutting blades 34 are distributed on the ring cutting part 3 in a circumferential array, and the six moving grooves 311 are distributed on the rotating part 31 in a circumferential array. The stopper groove 37 is provided as a hexagonal annular groove body. When the six circular cutting blades 34 are in a combined state, the side edges of every two circular cutting blades 34 are in contact, the combined blades form a regular pattern, a fourth through hole is formed in the center of the pattern, the diameter of the fourth through hole is larger than that of a syringe needle, and the diameter of the fourth through hole is smaller than the inner diameter of the limiting sleeve. Through the arrangement, the circular cutting component 3 can cut the limiting sleeve independently under the condition of not damaging the needle head on the syringe when directly cutting the limiting sleeve or sleeving the limiting sleeve and the circular cutting component 3 on the syringe for cutting.

In this embodiment, a locking member 3121 is provided on the circular cutting part 3, one end of the locking member 3121 is connected to the circular cutting part 3, and the other end of the locking member 3121 is connected to the rotating member 31. Through the arrangement, the rotating piece 31 can be kept in a relatively fixed state under the non-artificial condition, and the condition that the rotating piece 31 rotates when moving, so that the circular cutting blade 34 is driven to move to enable the circular cutting blade 34 to be in contact with the limiting sleeve, scratches are left on the sleeve, and even the sleeve is cut off is prevented. More specifically, a handle is arranged on the locking member 3121, the handle is integrally connected with the locking member 3121, a threaded section is arranged on the locking member 3121, a locking hole 312 is arranged on the rotating member 31, an internal thread matched with the threaded section is arranged in the locking hole 312, and the locking member 3121 is in threaded connection with the locking hole 312.

In this embodiment, be equipped with dead lever and locating lever on the circular cutting part 3, the one end of dead lever is connected with the one end of locating lever, and the other end of dead lever is connected with circular cutting part 3, and the other end of locating lever is connected with fixed part 2. More specifically, the positioning rod is provided with a positioning line 321, and the distance between the circular cutting component 3 and the fixing component 2 can be accurately positioned through the positioning line 321, so that the cutting position of the limiting sleeve can be determined. The fixing rod comprises a first fixing rod 35 and a second fixing rod 36, the fixing rod comprises a first fixing rod 32 and a second fixing rod 33, one end of the first fixing rod 35 is connected with the annular cutting part 3, the other end of the first fixing rod 35 is connected with one end of the first fixing rod 32, the other end of the first fixing rod 32 is connected with the fixing part 2, one end of the second fixing rod 36 is connected with the annular cutting part 3, the other end of the second fixing rod 36 is connected with one end of the second fixing rod 33, and the other end of the second fixing rod 33 is connected with the fixing part 2. The first positioning rod 32 and the second positioning rod 33 are provided with positioning lines 321. The first positioning rod 32 and the second positioning rod 33 are symmetrically distributed about the central axis of the circular cutting component 3, and the first fixing rod 35 and the second fixing rod 36 are symmetrically distributed about the central axis of the circular cutting component 3.

In this embodiment, the fixing part 2 is provided with a first through hole 23, a second through hole 24 and a positioning part 22, two ends of the positioning part 22 respectively penetrate through the first through hole 23 and the second through hole 24, the positioning part 22 is movably connected with the fixing part 2, the first positioning rod 32 is connected with the first through hole 23, the second positioning rod 33 is connected with the second through hole 24, and the positioning part 22 is movably connected with the first positioning rod 32 and the second positioning rod 33. More specifically, the positioning component 22 is provided with a first through hole 221, a second through hole 222 and a spring 25, the first through hole 221 is communicated with the first through hole 23, the first positioning rod 32 is movably connected with the first through hole 221 and the first through hole 23, the second through hole 222 is communicated with the second through hole 24, the second positioning rod 33 is movably connected with the second through hole 222 and the second through hole 24, one end of the spring 25 is connected with the positioning component 22, and the other end of the spring 25 is connected with the fixing component 2. When the positioning device is used, the positioning component 22 is pressed, the spring 25 compresses to reduce the pressure of the contact surface of the inner side walls of the first through hole 221 and the second through hole 222, the first positioning rod 32 and the second positioning rod 33 can move in the first through hole 23 and the second through hole 24, the positioning component 22 is loosened when the positioning component moves to a preset position, the positioning component 22 moves towards one end far away from the fixing component 2 under the action force of the spring 25, the friction force between the inner wall of the first through hole 221, the inner side wall of the first through hole 23 and the positioning rod 32 is increased, the friction force between the inner side wall of the second through hole 222, the inner side wall of the second through hole 24 and the positioning rod 33 is also increased, the first positioning rod 32 and the second positioning rod 33 are fixed in such a way, and the annular cutting component 3 and the fixing component 2 are prevented from relative displacement.

In this embodiment, the fixing member 2 is provided with a third through hole 21, the center of gravity of the third through hole 21 is located at the midpoint of the line connecting the center of gravity of the first through hole 23 and the center of gravity of the second through hole 24, and the third through hole 21 is connected to the syringe. And the inner side wall of the third through hole 21 is provided with an anti-slip pad which is fixedly connected with the inner side wall of the third through hole 21. The limiting sleeve comprises a needle head part 1 and a needle tube part 11, the needle head part 1 is integrally connected with the needle tube part 11, the needle head part 1 is detachably connected with the circular cutting blade 34, and the needle tube part 11 is detachably connected with the fixing component 2 and the circular cutting component 3. The inner side wall of the needle tube part 11 is provided with anti-skid grains. Through the arrangement, the ring-cutting blade 34 can be contacted with the joint of the needle head part 1 and the needle tube part 11, so that the shearing of the needle head part 1 is more accurate.

The use method and the working principle of the invention are as follows: during the specific use, at first press the locating part removal locating lever, confirm preset position through the location line on the locating lever, later loosen locating part, locating part fixes locating lever one and locating lever two under the drive of spring, then twist the handle on the retaining member, make the retaining member keep away from the circular cutting part, rotate this moment and rotate the piece, the one end that the piece drove the circular cutting blade moves to the central point of circular cutting part puts, thereby cut spacing sheathed tube syringe needle portion, later will rotate the piece and reset, twist the retaining member, it fixes to the rotating piece, later demolish shearing part and inject.

The above description of the embodiments is only for the understanding of the present invention. It should be noted that modifications could be made to the invention without departing from the principle of the invention, which would also fall within the scope of the claims of the invention.

Claims

1. An injection stopper comprises a limiting sleeve and a shearing assembly, and is characterized in that one end of the limiting sleeve is connected with the shearing assembly, and the other end of the limiting sleeve is connected with an injector; the shearing assembly comprises a fixing part and a circular cutting part, one end of the fixing part is connected with the injector, the other end of the fixing part is connected with one end of the circular cutting part, and the other end of the circular cutting part is connected with the limiting sleeve.

2. The injection stop of claim 1 wherein the ring cutting member has a ring cutting blade and a rotating member, the ring cutting blade being connected to one end of the rotating member and the other end of the rotating member being connected to the ring cutting member.

3. The injection stop of claim 2, wherein the circular cutting blade is provided with a stop rod and a moving rod, the circular cutting member is provided with a stop groove, the rotating member is provided with a moving groove, one end of the stop rod is connected with the circular cutting blade, the other end of the stop rod is connected with the stop groove, one end of the moving rod is connected with the circular cutting blade, and the other end of the moving rod is connected with the moving groove.

4. An injection stop according to claim 3 in which a retaining member is provided on the circumferential cut part, one end of the retaining member being connected to the circumferential cut part and the other end of the retaining member being connected to the rotatable member.

5. The injection stop of any one of claims 1-4, wherein the ring-cutting member is provided with a securing rod and a securing rod, one end of the securing rod is connected to one end of the securing rod, the other end of the securing rod is connected to the ring-cutting member, and the other end of the securing rod is connected to the securing member.

6. The injection stop of claim 5, wherein the securing lever comprises a first securing lever and a second securing lever, one end of the first securing lever is connected to the annular cutting member, the other end of the first securing lever is connected to one end of the first securing lever, the other end of the first securing lever is connected to the securing member, one end of the second securing lever is connected to the annular cutting member, the other end of the second securing lever is connected to one end of the second securing lever, and the other end of the second securing lever is connected to the securing member.

7. The injection stopper of claim 6, wherein the fixing member is provided with a first through hole, a second through hole and a positioning member, two ends of the positioning member respectively penetrate through the first through hole and the second through hole, the positioning member is movably connected with the fixing member, the first positioning rod is connected with the first through hole, the second positioning rod is connected with the second through hole, and the positioning member is movably connected with both the first positioning rod and the second positioning rod.

8. The injection stopper of claim 7, wherein the positioning member is provided with a first through hole, a second through hole and a spring, the first through hole is communicated with the first through hole, the first positioning rod is movably connected with the first through hole and the first through hole, the second through hole is communicated with the second through hole, the second positioning rod is movably connected with the second through hole and the second through hole, one end of the spring is connected with the positioning member, and the other end of the spring is connected with the fixing member.

9. The injection stopper of claim 8, wherein the fixing member is provided with a third through hole, the center of gravity of the third through hole is located at a midpoint of a line connecting the center of gravity of the first through hole and the center of gravity of the second through hole, and the third through hole is connected to the syringe.

10. The injection stop of any one of claims 6 to 9, wherein the stop collar comprises a tip portion and a barrel portion, the tip portion being integrally connected to the barrel portion, the tip portion being detachably connected to the ring-cutting blade, the barrel portion being detachably connected to both the retaining means and the ring-cutting means.