KR101368920B1 - An injetion device - Google Patents

Abstract

The present invention relates to a medical drug injection device that can be injected using a syringe for one time, but can be injected to a wide range of procedures by dividing the same amount continuously.
To this end, a syringe is mounted to inject a drug to a part of the body, the body having a space therein, and a body consisting of a handle coupled to the front of the body; A syringe holder which is inserted into the handle and slides forward and backward, and in which the syringe is coupled; A driving unit driven in conjunction with the forward operation of the syringe holder; It is connected to the drive unit, and comprises a close contact for advancing the plunger of the syringe for a predetermined period during the forward operation of the syringe holder.
According to this, since it is formed in a ballpoint pen type, it is easy to grasp, and the drug can be injected only by pressing and then pressing on the treatment site. Therefore, it is difficult to carry out continuous injection operation for a wide range of treatment sites because it does not take force. . In addition, the concise configuration can reduce the manufacturing cost, it is easy to operate with one hand, and the drug injection amount and the insertion depth of the injection needle can be adjusted to have a convenient effect.

Description

Medical Drug Injection Device {AN INJETION DEVICE}

The present invention relates to a medical drug injector, and more particularly, a medical drug injector which allows injection to a wide range of surgical sites by injecting a syringe in a single dose, so that the same amount can be continuously injected. It is about.

In general, many syringes are used to inject drugs into the human body for therapeutic purposes.

Usually, a syringe consists of a cylinder in which a drug is stored, a piston fitted in the cylinder, a plunger for moving the piston forward and backward, and a needle coupled to the front end of the cylinder.

In the conventional method of injecting the drug into the skin using a syringe, the main body is held by one hand and the plunger is pushed by the other hand.

However, this method of using a syringe requires a considerable amount of skill to accurately inject the dose, and both hands must be used, resulting in inconvenience that other tasks cannot be performed.

Meanwhile, Korean Patent No. 10-0844031 discloses an "adjustable dosage syringe."

These dosing syringes are manual because they are inconvenient to use, and techniques for improving them automatically have been disclosed, and related Korean Patent Publication No. 10-2010-0136245 has been disclosed.

On the other hand, the prior art is limited to one-time use, the amount of drug injection can not be controlled evenly, and if there is a need to inject continuously in a wide range of treatment site, there was a problem that the procedure is not performed properly due to physical fatigue.

Korean Patent No. 10-0844031.

The present invention has been made to solve the above problems of the prior art, is formed in a ballpoint pen type, easy to grip, the drug can be injected only by pressing after pressing close to the treatment site, so it does not take a wide range of procedures It is an object of the present invention to provide a medical drug injector so that a continuous injection operation can be easily performed.

In another aspect, the present invention is to provide a medical drug injection device that is easy to use because the configuration can be concise, the manufacturing cost can be reduced, easy to operate with one hand, and the drug injection amount and the insertion depth of the injection needle can be adjusted. .

The object of the present invention is that the syringe is mounted to inject a drug to a part of the body, the body having a space therein, and the body consisting of a handle coupled to the front of the body; A syringe holder which is inserted into the handle and slides forward and backward, and in which the syringe is coupled; A driving unit driven in conjunction with the forward operation of the syringe holder; It is connected to the drive unit, it can be achieved by a medical drug injection device comprising a close contact for advancing the plunger of the syringe for a predetermined period during the forward operation of the syringe holder.

The syringe holder has a space formed therein, both ends are opened, and a rib is formed at the rear end of the syringe holder in close contact with the syringe, and the driving part is connected to the rib.

The drive unit is in close contact with the rib and the rack gear formed in parallel to the inside of the main body; A spring for elastically supporting one end of the rack gear; A pinion gear coupled to the rack gear and coupled to the shaft by a first clutch bearing such that rotational force is generated only in one direction; A first pulley coupled to the shaft of the pinion gear and rotating in the same manner as the pinion gear; A second pulley axially coupled to an inner rear end of the handle of the main body and coupled to a second clutch bearing; One side is wound around the first pulley, the other side is wound around the second pulley is rotated at regular intervals by the rotation of the pinion gear, characterized in that it comprises a timing belt coupled to the one side close contact.

The first and second clutch bearings may move the timing belt when rotated in the clockwise direction, and the timing belt rotates only in one direction because the first clutch bearing is idle when rotated in the counterclockwise direction. Therefore, the timing belt is rotated in a clockwise direction for a predetermined time, and the contact table is advanced, and by pushing the plunger forward, the piston is advanced by the space where the ejected drug of the syringe was located.

The front end of the handle is coupled to the adjustment cap, characterized in that the exposure length of the needle is set by adjusting the combined length of the adjustment cap.

The handle and the body are screwed, characterized in that to set the operating distance of the syringe holder by adjusting the coupling depth of the handle to the screw coupling.

The contact table may include a paper holding part fixed to mesh with a gear of a timing belt; A body to which the press unit is fitted; A shaft connected to the paper pressing part through the body; It is characterized in that it comprises an elastic body coupled to the shaft to exert a force to pull the pressure-sensitive portion downward to be in close contact with the timing belt.

According to the present invention, since it is formed in a ballpoint pen type, it is easy to grip, and the drug can be injected only by pressing and then pressing on the treatment site so that it is difficult to perform continuous injection operation for a wide range of treatment sites. There is.

In addition, the present invention is made of a mechanical structure can be concise configuration can reduce the manufacturing cost, easy to operate with one hand, the drug injection amount and the insertion depth of the injection needle can be used to effect the convenience.

1 is a perspective view showing a medical drug injection device according to an embodiment of the present invention,
2 is a cross-sectional view showing a medical drug injection device according to an embodiment of the present invention,
3 to 5 is a cross-sectional view showing the operation of the medical drug injection device according to an embodiment of the present invention,
6 and 7 are front cross-sectional view showing the operation of the 'load knob' in the medical drug injection device according to an embodiment of the present invention,
8 and 9 are side cross-sectional view showing the operation of the 'load knob' in the medical drug injection device according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the accompanying drawings, Figure 1 is a perspective view showing a medical drug injection device according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a medical drug injection device according to an embodiment of the present invention, Figures 3 to 5 6 and 7 are sectional views showing the operation of the 'load knob' in the medical drug injection device according to an embodiment of the present invention, Figure 8 and Figure 9 is a side cross-sectional view showing the operation of the 'load knob' in the medical drug injection device according to an embodiment of the present invention.

As shown in Figure 1 to 9, the medical drug injection device (A) according to an embodiment of the present invention, the syringe 100 is mounted to inject a drug to a part of the body, the space therein A main body (1) comprising a body (2) having a handle and a handle (P) coupled to the front of the body (2); A syringe holder 8 inserted into the handle P and slid in the front and rear directions and having a syringe 100 coupled thereto; A drive unit 3 driven in conjunction with the forward operation of the syringe holder 8; It is connected to the drive unit 3, and comprises a close contact (4) for advancing the plunger 160 of the syringe 100 for a predetermined period during the forward operation of the syringe holder (8).

The syringe 100 includes a cylindrical cylinder 110 in which a drug is stored, a plunger 160 for moving forward and backward of the piston 120 fitted in the cylinder 110, and an injection coupled to the front end of the cylinder 110. Consists of a needle 130, one end of the cylinder 110 is formed with a round jaw 140.

The main body 1 is composed of a body 2 and the handle P, the handle P is formed in a pen shape so as to be easily gripped by hand, the front end is open and the rear end is blocked, and the hollow part is hollow inside. It is formed, the operating hole 10 having a predetermined length is formed in the lower portion so that the loading knob (5) is operated, the drive unit 3 is formed inside the upper.

A guide rod 29 is formed at the upper portion of the operating hole 10 in parallel with the operating hole 10 to horizontally guide the forward and backward operation of the loading knob 5.

The control cap 32 is coupled to the front end of the handle P, and the exposure length of the injection needle 130 may be set by adjusting the combined length of the control cap 32. That is, if the control cap 32 is tightened a lot, the exposure length of the injection needle 130 becomes long, and if it is less tightened, the exposure length of the injection needle 130 becomes short.

The adjusting cap 32 is screwed to the front end of the handle (P), the hole through which the needle 130 is formed is formed in the center. That is, the thread is formed on the outer peripheral surface of the front end of the handle (P), the thread is formed on the inner peripheral surface of the adjustment cap 32 can be screwed, and the coupling length can be adjusted while tightening or loosening the adjustment cap 32 to scan The depth at which the needle 130 is inserted into the skin may be adjusted.

In addition, the handle (P) and the body (2) is screwed. Therefore, the operating distance of the syringe holder 8 can be adjusted by adjusting the depth of engagement by rotating the handle (P) and the operating distance of the rack gear 31 of the drive unit 3 to be described later.

The syringe holder 8 may be inserted into the handle P to slide in such a manner as to be pulled in and pulled out.

The syringe holder 8 has a space formed therein, both ends thereof are opened, and a rib 82 is formed at the rear end to closely contact the round jaw 140 of the syringe 100, and has a substantially cylindrical shape. ) Is connected to the drive unit (3).

Therefore, the cylinder 110 of the syringe 100 is fitted into the syringe holder 8, and the syringe 100 is coupled with the plunger 160 inserted into the body 2.

The drive unit 3 is in close contact with the rib 82 and the rack gear 31 formed in parallel to the inside of the main body (1); A spring S elastically supporting one end of the rack gear 31; A pinion gear 33 that is coupled to the rack gear 31 and coupled to the shaft by a first clutch bearing C1 for generating rotational force in only one direction; A first pulley 34 coupled to the shaft of the pinion gear 33 and rotating in the same manner as the pinion gear 33; A second pulley 35 axially coupled to the inner rear end of the handle P of the main body 1 and coupled to a second clutch bearing C2 in which rotational force is generated only in one direction; One side is wound around the first pulley 34, the other side is wound around the second pulley 35 is rotated at regular intervals by the rotation of the pinion gear 33, the timing belt is coupled to the close contact 4 It comprises 36.

The rack gear 31 is formed on the upper surface of the rectangular plate having a predetermined length, one side is formed with a step 312 in close contact with the rib 82.

The first and second clutch bearings C1 and C2 apply a one-way clutch that transmits rotational force only in one direction.

Preferably, when the first and second pulleys 34 and 35 are rotated in the clockwise direction, the timing belt 36 can be moved, and when the first and second pulleys 34 and 35 are rotated in the counterclockwise direction, they are idle. On the other hand, unlike the first pulley 34, the second pulley 35 is rotated in only one direction but is fixed so as not to turn in the opposite direction so that the contact table 4 is not reversed. Therefore, the timing belt 36 is rotated only in the clockwise direction so that the timing belt 36 is operated only in the direction in which the plunger 160 is pushed toward the syringe 100 and pressed.

The pinion gear 33 is coupled to the shaft pin and the first clutch bearing C1 to rotate in one direction but idle in the opposite direction.

In other words, when the rack gear 31 is reversed (the syringe holder 8 is retracted), the pinion gear 33 rotates counterclockwise and is idle.

On the contrary, when the rack gear 31 is advanced (the syringe holder 8 is pulled out), the pinion gear 33 is rotated clockwise to rotate the first pulley 34. As the timing belt 36 rotates clockwise in conjunction with the rotation of the first pulley 34, the contact table is advanced, and the ejected drug of the syringe was pushed forward by pushing the plunger 160 of the syringe 100 forward. The piston is advanced by space.

The timing belt 36 has a plurality of tooth grooves 362 formed on one surface thereof, one end of which is wound on the first pulley 34, and the other end of which is wound on the second pulley 35.

The plurality of tooth grooves 362 have a trapezoidal cross section, and trapezoidal teeth are also formed on the outer surfaces of the first and second pulleys 34 and 35 so that the timing belt 36 slips and prevents slippage. Transmission of rotational force can be made possible.

Accordingly, the timing belt 36 rotates a predetermined section by the rotation of the pinion gear 33, and the contact table 4 moves in conjunction with the rotation of the timing belt 36, thereby moving the plunger of the syringe 100 ( 160).

Meanwhile, the contact table 4 is coupled to the lower portion of the timing belt 36 and is in contact with the plunger 160 of the syringe 100 and is connected to the loading knob 5.

The loading knob 5 may be locked and released to move to the desired position by separating the close contact 4 from the timing belt 36.

The contact table 4 includes a holding part 41 having a tooth 412 formed to be engaged with the tooth groove 362 of the timing belt 36; A body 42 to which the pressure-sensitive portion 41 is fitted; A shaft 43 penetrating the body 42 and connected to the paper holding part 41; It is configured to include an elastic body 44 is coupled to the shaft 43 and exerts a force to pull down the paper holding portion 41 to be in close contact with the timing belt 36.

The holding member 41 has a tooth 412 formed at a bottom thereof so as to be engaged with the tooth groove 362 formed on the upper surface of the lower timing belt 36.

The body 42 is in close contact with the side of the lower timing belt 36, is formed continuously in the lower portion of the paper holding portion 41, the shaft 43 is formed in the lower portion of the body 42, the shaft ( 43 is coupled to the loading knob 5.

A stepped portion 432 is formed on the upper portion of the shaft 43 and is supported on the upper portion of the guide rod 29 so that the contact table 4 may be fixed so as not to be separated downward.

The elastic body 44 is a spring whose lower end is supported inside the loading knob 5 and whose upper end is supported by the guide rod 29 to exert downward force on the shaft 43 and the holding part 41.

The loading knob 5 is coupled to the lower jaw of the shaft 43, and the loading knob 5 passes through the operating hole 10 of the handle P to be exposed to the outside.

Hereinafter, the operation of the present invention will be described.

After separating the dust handle (P) from the body (2) to couple the syringe 100 to the syringe holder (8) so that the plunger 160 is in close contact with the holder (4).

This can be set by pushing the loading knob 5 upward so that the pressure-sensitive portion 41 is spaced apart from the timing belt 36 and moved back and forth to adjust the contact length 4 to an appropriate length so as to contact the plunger 160. have.

Then, by adjusting the cap 32 to the tip of the handle (P) to set the length of the needle 130 appropriately.

After the handle (P) is coupled to the body (2) to adjust the coupling depth to an appropriate distance. That is, when the handle P is deeply coupled to the body 2, the operating distance of the syringe holder 8 is shortened, so that the scanning depth is shallow.

On the contrary, when the handle P is shallowly coupled to the body 2, the operating distance of the syringe holder 8 becomes long, so that the depth of injection becomes deep.

Then, as shown in Figure 4, holding the handle (P) as if grasping the ballpoint pen and presses against the treatment site, the syringe holder (8) is pulled into the inside of the body (in the right direction in Figure 4). The pinion gear 33 coupled to the rack gear 31 is rotated by pushing the rack gear 31. At this time, the spring S is compressed.

The pinion gear 33 rotates in the counterclockwise direction, but because the pinion gear 33 rotates by the first clutch bearing C1, the plunger 160 is not moved by the fixing of the contact table 4 and is stopped at the position. do. On the other hand, the second pulley 35 rotates only in the clockwise direction and the reverse direction is fixed so as not to rotate so that the contact table 4 does not reverse. Therefore, the cylinder 110 of the syringe 100 coupled to the syringe holder 8 is drawn in, but the plunger 160 is fixed, and as a result, the plunger 160 pushes the piston 120 of the syringe 100. Is exerted is the drug is discharged through the injection needle 130 is made to the injection action.

That is, the injection can be made only by the operation to push the handle (P) toward the treatment site.

Then, as shown in FIG. 5, when the needle 130 is pulled out of the treatment site, the rack gear 31 is pushed to the opposite side (which is left in FIG. 5) by the restoring force of the spring S. The pinion gear 33 is rotated in the clockwise direction, and the syringe holder 8 is drawn out, so that the syringe 100 is also drawn out in its original state.

When the pinion gear 33 is rotated in the clockwise direction, the first pulley 34 is co-rotated by the first clutch bearing C1, followed by the rotation of the timing belt 36, and the second pulley 35 is also rotated. Is rotated. Therefore, the timing belt 36 is rotated in a clockwise direction for a certain period to advance the contact table 4, and by pushing the plunger 160 forward, the piston is advanced by the space where the ejected drug of the syringe 100 was located. .

Thus, the operation of injecting the drug by the operation of pushing and holding the handle (P) to the treatment site and detaching from the treatment site can be repeated several times. In addition, the plunger 160 is also advanced in steps to prevent air from filling in the syringe 100.

Meanwhile, the used syringe 100 is disassembled and removed from the syringe holder 8 by disassembling the handle P and mounting a new syringe 100.

Further, by pushing the loading knob 5 upward, the contact table 4 is spaced apart from the timing belt 36, and then retracted to return to a position corresponding to the plunger 160 of the newly replaced syringe 100. Move it.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the invention, It is obvious that the claims fall within the scope of the claims.

1 body 2 body
3: drive unit 4: contact table
5: loading knob 8: syringe holder
10: operator 31: rack gear
32: adjustment cap 33: pinion gear
34: first pulley 35: second pulley
36: timing belt S: spring
C1: First Clutch Bearing C2: Second Clutch Bearing

Claims (7)

The syringe 100 is mounted to inject a drug to a part of the body,
A main body (1) comprising a body (2) having a space therein and a handle (P) coupled to the front of the body (2);
It is inserted into the handle (P) and slides in the front and rear directions, a space is formed therein so that the syringe 100 is coupled therein, both ends are opened, the rear end of the syringe 100 A syringe holder (8) having ribs (82) in which 140 is in close contact;
A driving unit 3 driven in conjunction with the forward operation of the syringe holder 8;
It is connected to the drive unit 3, the close contact (4) for advancing the plunger 160 of the syringe 100 for a predetermined period during the forward operation of the syringe holder (8);
The handle (P) and the body (2) is screwed, medical drug injection device characterized in that the operating distance of the syringe holder (8) can be adjusted by rotating the handle (P) to adjust the coupling depth . delete The method of claim 1,
The drive unit 3 is
A rack gear 31 in close contact with the ribs 82 and formed parallel to the inside of the main body 1;
A spring S elastically supporting one end of the rack gear 31;
A pinion gear 33 that is coupled to the rack gear 31 and coupled to the shaft by a first clutch bearing C1 that generates rotational force in only one direction;
A first pulley 34 coupled to the shaft of the pinion gear 33 and rotating in the same manner as the pinion gear 33;
A second pulley 35 axially coupled to the inner rear end of the handle P of the main body 1 and coupled to a second clutch bearing C2 which generates rotational force in only one direction;
One side is wound around the first pulley 34, the other side is wound around the second pulley 35 is rotated at regular intervals by the rotation of the pinion gear 33, the contact table (4) on one side A timing belt 36 coupled;
Medical drug injection device comprising a. The method of claim 1,
Control cap 32 is coupled to the front end of the handle (P), medical drug injection device, characterized in that the exposure length of the injection needle 130 is set by adjusting the combined length of the control cap (32). delete The method of claim 3, wherein
The contact table 4 is
A holding part 41 having a tooth 412 formed to be engaged with a tooth groove 362 formed in the timing belt 36;
A body 42 to which the pressure-sensitive portion 41 is fitted;
A shaft 43 penetrating the body 42 and connected to the paper holding part 41;
An elastic body 44 coupled to the shaft 43 and exerting a force to pull the pressure-sensitive portion 41 downward to be in close contact with the timing belt 36;
Medical drug injection device comprising a. The method of claim 3, wherein
The second pulley (35) is a medical drug injection device, characterized in that it rotates only in one direction and does not rotate in the reverse direction.

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