WO2010048752A1

WO2010048752A1 - Needle-replacing apparatus mating with split-type continuous injector

Info

Publication number: WO2010048752A1
Application number: PCT/CN2008/072867
Authority: WO
Inventors: 潘秋保
Original assignee: Pan Qiubao
Priority date: 2008-10-29
Filing date: 2008-10-29
Publication date: 2010-05-06

Abstract

A needle-replacing apparatus for replacing the needle of an injector, and a split-type continuous injector using the needle-replacing apparatus, wherein the needle-replacing apparatus includes a barrel (10, 20, 30) for vertically placing a needle head (00), and the needle tube (002) of said needle head (00) locates at the underside, and the needle holder (001) locates at the upside. Said barrel (10, 20, 30) has a rotatable mechanism (101, 201), and said needle head (00) lifts or rotates as the rotatable mechanism (101, 201) rotating, thus it makes said needle holder (001) connect to or remove from the nozzle of said injector.

Description

Needle changer with split continuous syringe

Technical field

The present invention relates to an injecting device, and more particularly to a needle changer for use with a split continuous syringe.

Background technique

Hypodermic needles are widely used in modern medicine. For both human and animal bodies, needles are carriers for the delivery of fluids to therapeutic subjects. One prior art injection method is to assemble a subcutaneous injection needle onto a syringe, which is then inserted into a human or animal body for intramuscular, subcutaneous or intravenous injection. A needle for subcutaneous injection into a patient or an animal body is inevitably contaminated by the blood and body fluid of the patient, and if the used needle is repeatedly used, it may cause the spread of the germ, which may cause a huge medical hazard. A consensus has been reached in the medical community.

Therefore, one solution is to use a disposable needle and a disposable syringe, that is, after each end of the patient's operation, discard the used needle and syringe and replace it with a new unused needle and syringe. Can effectively avoid the spread of germs.

But at the same time, it brings another problem, that is, if the needle and the syringe are replaced every time, it is troublesome to operate, and each time you need to take medicine and exhaust, especially in the case of large-volume injection. For example, when multiple people or multiple animals are simultaneously vaccinated, such problems are more prominent. Continuous manual replacement of needles and syringes will result in low production efficiency. Many years ago, in animal medicine, people started using continuous syringes. Chinese patent CN86205455 discloses a continuous syringe which uses a one-way valve to release the handle after the first needle is injected, and the liquid is inhaled from the vial in one direction due to the vacuum. Greatly improve the efficiency of injection. However, when using this continuous syringe, the needle cannot be changed, so less is used for injection.

With the development of medical care, more and more vaccines need to be injected. In order to solve the problem of injection efficiency, Chinese patent CN200320109505.9 proposes to use a high-pressure gas to make a syringe, and use high-pressure gas to deliver the syrup into the animal or human body to complete the injection. However, the method is cumbersome and easy to use when used. Animal or human body fluid splashes on the spray head, causing more infection.

Therefore, how to use a continuous syringe and a matching needle changer to change the needle to avoid infection is a problem that technicians need to consider.

Summary of the invention

The technical problem to be solved by the present invention is to provide a needle changer matched with a continuous syringe to increase operational safety. In order to solve the above technical problem, the present invention provides a needle changer for replacing a needle with a continuous syringe, the needle comprising a needle tube and a needle holder, the syringe being connected to the needle holder through a nozzle, the exchange The needle device includes:

a syringe for vertically placing a needle, the needle tube of the needle is at the bottom, the needle holder is at the top; the syringe has a rotatable mechanism for rotating the needle with the rotatable mechanism Elevating or rotating to connect or detach the needle hub from the nozzle of the syringe.

Further, the needle changer further includes:

A left-wheeled needle has a plurality of syringes arranged vertically.

Further, at least a portion of the inner diameter of the rotatable mechanism limits at least a portion of the outer diameter of the needle hub.

Further, the needle changer further includes a first driving unit coupled to the rotatable mechanism for driving the rotatable mechanism of the syringe to rotate when any one of the syringes is aligned with the syringe.

Further, the needle changer further includes a second driving unit connected to the left-wheeled pin for driving the left-handed pin to rotate, so that the plurality of syringes are sequentially vertical Align the syringe in the direction.

Further, the needle changer further includes a trigger unit connected to the second driving unit for issuing a trigger signal.

Further, the needle changer further includes a liftable bracket vertically supporting the syringe, the nozzle of the syringe is directed to the ground; the trigger unit is mounted on the bracket, in the syringe A trigger signal is generated after being placed in the bracket.

Further, the needle changer further includes a third driving unit coupled to the continuous injector for driving the syringe to move up and down, and extending the nozzle of the syringe into the needle in the syringe aligned therewith Position the seat, or pull it up from that position.

Further, the syringe is uniformly distributed on the left-wheeled butt, and the second driving unit is further configured to drive the left-wheeled butt to rotate stepwise.

Further, the syringe is a water gun type injection gun having a barrel, a liquid injection port, a trigger, and a gun body, the barrel having a threaded nozzle, and the needle holder is screwed to the threaded nozzle.

Further, the left wheel type acupuncture includes:

a housing having a hollow portion, the top of the housing being open, and the bottom portion being closed;

a body having a top surface extending downwardly from the top opening to form a plurality of syringes for receiving the needle;

A sley, disposed in the hollow portion of the housing, has a cavity for receiving the syringe, and the cartridge is detachably coupled to the sley.

Further, the body further includes:

A sealing paper for sealing the syringe is attached to the top surface of the carcass.

Further, the housing further includes:

A spacer attached to the top opening of the housing.

Further, the housing further includes:

a cover that closes a top of the housing and is hinged to an upper edge portion of the housing;

Furthermore,

The cover body includes:

a first hole, when the cover is closed with the housing, the position of the first hole corresponds to the position of the barrel of the syringe, and corresponds to the position of a current syringe that is revolved thereto a path formed between the nozzle of the barrel of the injection gun and the current barrel;

a second hole, when the cover body is closed with the housing, the position of the second hole corresponds to a position of a syringe adjacent to the reverse revolution direction; a jig for piercing the seal of the corresponding syringe through the second hole;

a water jet for spraying distilled water or physiological saline into the corresponding syringe through the second hole; the automatic needle changer further comprising: a fourth driving unit connected to the paperr for Driving the paperr up and down; a fifth driving unit connected to the water sprayer for driving the water spray device, after the paper cutter punctures the sealing paper on the corresponding syringe Spray distilled water into the syringe.

Further, the first hole is a U-shaped notch on the cover.

Further, the left-wheeled needle further includes a limiting device for limiting the continued rotation of the syringe of the left-handed needle after one revolution of the needle.

Further, the needle changer further includes display means for indicating when the left-handed clicker is rotated by the limit means.

Further, the limiting device includes:

a raised portion on a top surface of the body;

a groove-shaped track, located on a lower side of the cover body, for accommodating the convex portion to slide in the track when the cover body is closed with the casing;

The blocking portion is located on the lower side of the cover body for blocking the route in which the convex portion continues to slide after the convex portion revolves with the syringe for one week.

Further, the plurality of syringes have a positioning cylinder, and when the 11 body is initially inserted into the socket, the position of the positioning cylinder corresponds to the position of the first hole.

Further, the raised portion is formed above the positioning cylinder.

Further, the first driving unit includes:

a plurality of gripping portions for respectively gripping the bottoms of the plurality of syringes, and a chassis for connecting the plurality of gripping portions, the first motor and the gear transmission system;

The first motor and the gear transmission system are coupled to the ground plate for driving the chassis to rotate, thereby driving the syringe to revolve through the plurality of gripping portions.

Further, the plurality of gripping portions are also a part of the third driving unit, and respectively drive the rotation of the respective gripping portions to drive the corresponding syringes to rotate.

Further, the grip portion has at least one notch, and the bottom of the syringe has at least one The side flaps, when the body is inserted into the sley, the flank of the bottom of the syringe is inserted into the corresponding notch of the grip. Further, the needle changer further includes a controller for controlling the action of the driving unit according to the current state.

In order to solve the above technical problems, the present invention also provides a split type continuous syringe using the above-described needle changer.

The invention provides a needle barrel for placing a needle, and a rotatable mechanism is arranged on the needle barrel, and the needle head reciprocates by the rotation of the rotatable mechanism, thereby engaging or separating the needle head and the syringe nozzle of the alignment syringe. The replacement of the injection needle prevents the operator from directly contacting the needle and has better safety.

The invention also provides a body which can simultaneously place a plurality of needles, and cooperates with the driving mechanism to automatically change the needle of the syringe when injecting the batch of the animal body and the human body, thereby improving the needle replacement efficiency. BRIEF abstract

1 is a schematic structural view of a needle changer according to a first embodiment of the present invention.

2 is a schematic structural view of a needle changer according to a second embodiment of the present invention.

Fig. 3 is a schematic view showing the structure of a left-wheeled pinhole of the needle changer of the third embodiment of the present invention.

Figure 4 is a schematic view of the structure of the squat of the left-wheeled needle.

FIG. 5 is a schematic structural view of the body shown in FIG. 3 before being inserted into the shank shown in FIG. 4 . Fig. 6 is a schematic structural view of a needle changer according to a fourth embodiment of the present invention.

Fig. 7 is a schematic view showing the structure of a cover body of a left-wheeled pinhole used in a fourth embodiment of the present invention. Figure 8 is a schematic structural view of the limiting device.

Preferred embodiment of the invention

The main idea of the present invention is to provide a syringe for placing a needle, and a rotatable mechanism is arranged in the syringe, and the needle is reciprocated by the rotation of the rotatable mechanism, thereby making the needle and the alignment syringe The syringe nozzle is engaged or disengaged for the purpose of automatically replacing the needle.

The technical solution of the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

Referring to Fig. 1, there is shown a schematic structural view of a needle changer according to a first embodiment of the present invention. The figure shows the situation in which the needle 00 is placed before the needle changer, the needle changer includes a syringe 10, and the syringe 10 includes a rotatable mechanism 101;

The syringe 10 is used for vertically placing a needle, the needle tube 002 of the needle 00 is at the bottom, and the needle holder 001 is at the top;

The rotatable mechanism 101 is for raising or lowering the needle 00 with the rotation of the rotatable mechanism 101 to connect or detach the needle hub 001 from the nozzle of the syringe.

The rotatable mechanism 101 can be any member that can realize the rotating function. In the embodiment, the nut 1011 is combined with the sleeve 1012, the nut 1011 is fixedly connected with the sleeve 1012, and the nut 1011 and the syringe 10 are connected. The bottom of the inner wall is threaded. In actual use, the upper end of the sleeve 1012 is supported by the needle holder 001, so that the needle holder 001 can move with the movement of the sleeve 1012, and then the rotation of the nut 1011 can drive the sleeve 1012 to reciprocate. Exercise, which can push the needle 00 up and down.

Of course, the sleeve 1012 can also be inserted into the needle holder 001, that is, at least a part of the inner diameter of the sleeve 1012 limits at least a part of the outer diameter of the needle holder 001, so that the needle 00 can rotate with the rotation of the nut 1011. When the needle holder 001 and the nozzle of the annotator are screwed, the needle holder 001 is connected or detached from the nozzle of the syringe.

Another rotatable mechanism is described below in the embodiment shown in FIG. 2.

Referring to Fig. 2, there is shown a schematic structural view of a needle changer according to a second embodiment of the present invention. The figure also shows the situation in which the needle 00 is placed before the needle changer. The rotatable mechanism 201 of the syringe 20 in the present embodiment includes: a base 2011, a transmission rod 2012, and a first driving unit 2013. The bottom of the barrel 20 of the present embodiment includes a plug portion that is inserted into the base 2011. The syringe 20 is inserted into the needle 00.

In actual operation, the first drive unit 2013 drives the transmission rod 2012, further driving the base 2011 and the syringe 20 to rotate, thereby driving the needle 00 to rotate.

The first driving unit 2013 may be an electric motor, and may be any other member that can realize driving, which is not limited in the present invention. Next, a third embodiment of the present invention will be described with reference to Figs. 3 and 4. In the third embodiment, the structure of the left-wheeled needle is used.

Referring to Figures 3 and 4, there is shown a schematic diagram of a left-wheeled needle structure of the needle changer of the third embodiment of the present invention. The left-wheeled needle file of the present embodiment includes: a housing 33, a body 31, and a socket 32; FIG. 3 shows the housing 33 and the body 31 of the left-wheeled butt, and FIG. 4 shows the left wheel. Acupuncture's squat 32.

Referring to Fig. 3, it is a schematic view of the front body 31 placed in the casing 33. The housing 33 has a hollow portion, and the top of the housing 33 is open and closed at the bottom. The housing 33 further includes: a spacer 331 and a cover 332. The spacer 331 is attached to the top opening of the housing. The spacer 331 is provided with a plurality of holes adapted to the syringe 30. The cover 332 is hinged to the upper edge portion of the housing 33 for closing the top of the housing 33. Of course, in the specific implementation, the cover 332 can also be connected to the housing 33 by other means, such as plugging, etc., which is not limited by the present invention.

The body 31 has a top surface 310 extending downward from the opening of the top surface 310 to form a plurality of syringes 30 for accommodating a needle; the body 31 further includes a sealing paper 312 attached to the Above the top surface 310 of the body 31, the syringe 30 is sealed.

Referring to FIG. 4, it is a schematic diagram of a squat structure of a left-wheeled needle. The sley 32 is disposed in the hollow portion of the casing 33, and includes: a cavity for accommodating the syringe 30 (shown in FIG. 3), a plurality of gripping portions 321 , and The chassis 322 of the gripping portion 321 . The catch 321 has at least one notch, and the bottom of the barrel 30 (shown in Figure 3) has at least one side flap.

In actual use, the syringe 30 extending downward from the top surface 310 of the body 31 shown in FIG. 3 is aligned with the opening in the spacer 331 to insert the syringe 30 into the opening in the spacer 331, thereby The syringe 30 is inserted into the interior of the housing 33, and the syringe 30 is further inserted into the sley 32, at which point the flank of the bottom of the syringe 30 is inserted into the corresponding recess of the gripping portion 321 .

In the present embodiment, the insertion of the mortise body 31 and the sley 32 is achieved by the insertion of the insertion portion at the bottom of the syringe 30 and the engagement portion 321 of the sley 32. In fact, the grip portion 321 can also be of various other configurations, and the object of the present invention can be achieved as long as it can be mated with the plug portion at the bottom of the syringe 30 to achieve a pluggable connection.

As can be seen from FIG. 3 and FIG. 4, in the present embodiment, the left-wheeled needle has a plurality of vertically arranged syringes 30 for placing a needle, the needle tube of the needle is under, and the needle is seated. . This way A plurality of needles can be placed in the plurality of syringes 30 at the same time, which better meets the needs of the application, and the number of the syringes 30 can be set as needed in actual use.

After the above-mentioned left-wheeled needles are provided, it is possible to simultaneously mount the needles to the plurality of syringes, for example, the nozzles of the plurality of syringes can be simultaneously aligned with the respective syringes 30 of the needles, and then the rotatable mechanism of the syringes 30 can be passed. The needle in each of the syringes 30 is driven to reciprocate and engage or disengage from the nozzle of the syringe. Of course, it is actually possible to control the lifting and lowering of the syringe so that the nozzle extends toward the syringe 30. At this time, only the needle needs to be reciprocated or rotated, that is, the needle can be loaded and unloaded.

Referring to Fig. 5, there is shown a schematic view of the structure of the body shown in Fig. 3 before being inserted into the socket shown in Fig. 4. For the sake of clarity, only the body 31 and the sley 32 are shown in the drawings, and it is easily understood that the sling 32 is placed within the housing 33 shown in FIG. 3 when the splicing is included, and the scorpion 31 is included. The syringe 30 is also placed within the housing 33, and the insertion portion at the bottom of the syringe 30 is inserted into the catching portion 321 included in the sley 32.

In actual use, the case where a plurality of needles need to be replaced for one syringe can be realized by further improving the needle changer described above, which will be described in detail below.

Referring to Fig. 6, there is shown a schematic structural view of a needle changer according to a fourth embodiment of the present invention. In the present embodiment, for the case where it is necessary to replace a plurality of needles with one syringe 51, the one syringe 51 can be fixed, and the syringe of the second embodiment of the present invention and the left-wheeled needle of the third embodiment. Compatible to achieve.

In the present embodiment, the syringe 51 is a water gun type injection gun having a barrel, a liquid injection port, a trigger, and a gun body. The barrel has a threaded nozzle, and the needle holder is screwed to the threaded nozzle. In this embodiment, a second driving unit 52 is provided at the same time for driving the left-wheeled pin to rotate, so that the plurality of syringes 30 are sequentially aligned with the syringe 51 in the vertical direction. In order to control the rotation of the left-handed butt, a trigger unit 54 is provided, which is connected 52 to the second drive unit, and the trigger unit 54 is used to issue a trigger signal.

The specific mechanism for fixing the syringe 51 may be a liftable bracket 53 for vertically supporting the syringe 51 so that the nozzle of the syringe is directed to the ground, corresponding to the syringe 30 on the left-wheeled needle, thereby Prepare the needle for loading and unloading. In this case, the trigger unit 54 can be installed on the tray. On the shelf, a trigger signal is generated after the syringe 51 is placed on the bracket 53, and the second driving unit 52 is triggered to drive the left-wheel butt rotation.

In order to realize the automatic needle changing, a third driving unit 55 is further provided in the embodiment for driving the syringe to move up and down, and the nozzle of the syringe is inserted into the needle holder in the syringe 30 aligned therewith. Position, or pull up from that position.

As an embodiment, the syringe 30 is uniformly distributed on the left-wheeled needle butt, and the second driving unit is further configured to drive the left-wheeled needle-shaped stepping rotation, so that when the syringe is fixed When on the cradle, it is more convenient to replace the needle one by one.

Specifically, the second driving unit 52 includes a first motor 521 and a gear transmission system 522 for driving the chassis 322 to rotate, thereby driving the cylinder 30 to revolve through the plurality of gripping portions 321 . The plurality of gripping portions 321 are also a part of the first driving unit included in the syringe 30, and drive the corresponding syringes 30 to rotate by respectively driving the rotation of the respective gripping portions 321 .

In actual use, the technical solution of the present invention may be implemented by a combination of a travel switch and a motor. Of course, a controller may be further included for controlling the actions of the respective drive units according to the working state of the current needle changer.

Referring to Fig. 7, there is shown a schematic view showing the structure of a cover body of a left-wheeled pinhole used in a fourth embodiment of the present invention. Fig. 7 only exemplarily depicts the cover 332 and the two syringes 30, and the structure of the housing 33 can be referred to Fig. 3. For the purpose of the fourth embodiment of the present invention, the cover 332 includes: a first hole 3321, a second hole 3322, a paper picker 3323, a water sprayer 3324, a fourth driving unit 3325, a fifth driving unit 3326, The limiting device and the display device 3328; wherein the limiting device will be described in detail in FIG.

The first hole 3321, when the cover 332 is closed with the housing 33, the position of the first hole 3321 corresponds to the position of the nozzle of the syringe 51, and is rotated to one of the ones The position of the current syringe 30 corresponds to a path between the nozzle of the syringe 51 and the current syringe 30; the first hole 3321 may be a U-shaped notch on the cover 332.

The second hole 3322, when the cover 332 is closed with the housing 33, the position of the second hole 3322 is opposite to the position of a syringe 30 adjacent to the first hole 3321 in the reverse revolution direction. correspond; The paper picker 3323 is configured to puncture the sealing paper of the corresponding one of the syringes 30 through the second hole 3322;

The water sprayer 3324 is configured to spray the distilled water into the corresponding syringe 30 through the second hole 3322; the purpose of spraying the distilled water is to place air in the needle to further prevent air from entering the human or animal body.

The fourth driving unit 3325 is configured to drive the paper cutter 3323 to move up and down; the fifth driving unit 3326 is configured to drive the water sprayer 3324, and the corresponding paper barrel 30 is punctured on the paper injector 3033. After the paper is sealed, distilled water is sprayed into the syringe 30.

For specific applications, some water may be contained in the water sprayer 3324, and after the respective syringes 30 are sprayed, the amount of water is added thereto. The user can use the water mark to remind the user of the water level in the sprinkler, so that the user can be reminded to replenish the water in time when the amount of water is insufficient.

The limiting device is configured to limit the rotation of the syringe 30 after the revolver of the left-wheeled needle, and realize the prompting after all the needles in the left-wheeled needle are used.

The display device 3328 is configured to indicate when the left-wheeled needle is restricted by the limiting device to better prompt the operator that all the needles have been used up. The display device 3328 can be a light emitting diode, or other device having an audible or optical alarm function.

Referring to FIG. 8, it is a schematic structural view of the limiting device. The limiting device includes: a raised portion 33271 on the top surface 310 of the body 31;

a grooved track 33272, located on the lower side of the cover 332, for receiving the raised portion 33271 at the grooved track 33272 when the cover 332 is closed with the housing 33 (shown in FIG. 3) Sliding inside;

The blocking portion 33273 is located on the lower side of the cover body 332 for blocking the route of the convex portion 33271 to continue to slide after the convex portion 33271 revolves with the syringe 30 for one week.

A plurality of syringes 30 may be provided with a positioning cylinder 33274. When the If body 31 is initially inserted into the sley 32, the position of the positioning cylinder 33274 corresponds to the first hole 3321. position. The raised portion 33271 is formed above the positioning cylinder 33274.

The working process of the needle changer of the fourth embodiment of the present invention in a specific application will be briefly described below. In actual use, the needle can be pre-produced, and the needle is placed in the syringe 30 of each needle. The syringe 30 is then closed with a sealing paper 312 to maintain a sterile environment. When the needle is required to be replaced, the needle can be replaced with the syringe.

Specifically, the syringe 51 is placed behind the bracket 53. At this time, the nozzle of the syringe 51 corresponds to the first hole 3321, and the first hole 3321 simultaneously corresponds to the positioning cylinder 33274, and the second hole 3322 The position corresponds to the position of one of the syringes 30 adjacent to the first hole 3321 in the reverse revolution direction; after the trigger unit 54 on the bracket 53 senses the syringe 51, a trigger signal is issued to trigger the fourth driving unit 3325 to drive the paper cutter After the 3323 moves downward, the sealing device corresponding to the syringe 30 is pierced through the second hole 3322, the fifth driving unit 3326 drives the water sprayer 3324 to spray distilled water into the syringe 30, and then the second driving unit. 52 drives the chassis 322 to rotate, rotating the syringe 30 that has been punctured and sprayed with distilled water under the first hole 3321, after which the third driving unit 55 drives the syringe 51 to move downward, the syringe The nozzle of 51 extends into the position of the needle holder in the syringe 30 aligned therewith, and the needle 00 is rotated or raised by the first driving unit 2013 to realize the nozzle of the needle holder and the syringe 51. Co.

After the needle of the syringe 51 is used, the needle can be separated from the nozzle of the syringe 51 by extending the needle back into the empty syringe 30 and driving the needle 00 to rotate or lower by the first driving unit 2013.

It should be pointed out that after the needle and the syringe are installed, the sound and light alarm device can also be used to indicate that the syringe is ready and ready for use.

In the present invention, the structure of the left-wheeled needle-shaped needle can be used. In fact, other needle-shaped structures can also be used, such as a square needle-shaped structure, as long as the needle can be placed in batches and coordinated with other devices. The purpose of the present invention can be achieved by replacing the needle, and is within the scope of the present invention.

It is a matter of course that the invention may be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

Industrial applicability

The invention can be widely applied to medical, sanitation and epidemic prevention and other industries requiring the use of a syringe, and is convenient for the replacement of the injection needle, and can be improved when injecting the batch of the animal body and the human body. Needle replacement efficiency, which improves work efficiency and prevents the operator from specifically touching the needle for better safety.

Claims

Claim

A needle changer for replacing a needle with a syringe, the needle comprising a needle tube and a needle holder, the syringe being coupled to the needle holder through a nozzle, wherein the needle changer comprises: a needle barrel in which the needle is placed vertically, the needle tube of the needle is at the bottom, the needle holder is at the top; the syringe has a rotatable mechanism for lifting the needle with the rotation of the rotatable mechanism Or rotating to connect or detach the needle hub from the nozzle of the syringe.

2. The needle changer according to claim 1, wherein the needle changer further comprises: a left-wheeled needle magazine having a plurality of vertically arranged needle cylinders.

3. A needle changer according to claim 1 or 2, wherein at least a portion of the inner diameter of the rotatable mechanism limits at least a portion of the outer diameter of the needle hub.

4. The needle changer of claim 3, wherein the needle changer further comprises a first drive unit coupled to the rotatable mechanism for aligning the syringe with any one of the syringes , the rotatable mechanism that drives the syringe rotates.

5. The needle changer according to claim 4, wherein the needle changer further comprises a second driving unit connected to the left wheel type butt for driving the left wheel type needle rotation Having the plurality of syringes sequentially align the syringe in a vertical direction.

6. The needle changer according to claim 5, wherein the needle changer further comprises a trigger unit connected to the second driving unit for emitting a trigger signal.

7. The needle changer according to claim 6, wherein the needle changer further comprises a liftable bracket that vertically supports the syringe, the nozzle of the syringe is directed to the ground; Mounted on the bracket, a trigger signal is generated after the syringe is placed on the bracket.

8. The needle changer according to claim 7, wherein the needle changer further comprises a third driving unit coupled to the syringe for driving the syringe to move up and down, the tube of the syringe The mouth extends into or out of the needle holder in the syringe it is aligned with.

9. The needle changer according to claim 8, wherein the needle barrel is uniformly distributed on the left wheel type butt, and the second driving unit is further configured to drive the left wheel type The needle is stepped and rotated.

The needle changer according to claim 9, wherein the syringe is a water gun type injection gun, having a barrel, a liquid injection port, a trigger, and a gun body, the barrel having a threaded nozzle, The needle hub is threadedly coupled to the threaded nozzle.

The needle changer according to claim 2, wherein the left wheel type buttress comprises: a housing having a hollow portion, the top of the housing being open, and the bottom portion being closed;

12. The needle changer according to claim 11, wherein the body further comprises: a sealing paper for sealing the syringe, attached to a top surface of the body.

13. The needle changer according to claim 11, wherein the housing further comprises: a spacer attached to the top opening portion of the housing.

The needle changer according to claim 11, wherein the housing further comprises: a cover that closes a top of the housing, and is hinged to an upper edge portion of the housing;

15. The needle changer of claim 14 wherein:

The cover body includes:

a sprinkler for spraying distilled water into the corresponding syringe through the second hole;

The automatic needle changer further includes: a fourth driving unit connected to the paperr for driving the paper cutter to move up and down; and a fifth driving unit connected to the water sprayer for driving the driving In the sprinkler, after the paper cutter pierces the sealing paper on the corresponding syringe, the distilled water is sprayed into the syringe.

The needle changer according to claim 15, wherein the first hole is a U-shaped notch on the cover.

The needle changer according to claim 15, wherein the left-wheeled needle further comprises a limiting device for limiting the continuation of the needle of the left-wheeled needle after one revolution of the needle Rotate.

18. The needle changer according to claim 15, wherein the needle changer further comprises display means for indicating when the left wheel type needle is restricted from being rotated by the limit means.

The needle changer according to claim 17 or 18, wherein the limiting device comprises:

a raised portion on a top surface of the body;

The needle changer according to claim 19, wherein the plurality of syringes have a positioning cylinder, and when the cartridge is initially inserted into the socket, the position of the positioning cylinder corresponds to At the position of the first hole.

The needle changer according to claim 19, wherein the boss is formed above the positioning cylinder.

22. The needle changer of claim 4, wherein the first drive unit comprises: a plurality of gripping portions for respectively engaging the bottoms of the plurality of syringes, and a chassis for connecting the plurality of gripping portions, the first motor and the gear transmission system;

The needle changer according to claim 22, wherein the plurality of gripping portions are also part of the third driving unit, and the corresponding syringes are driven by driving the rotation of the respective gripping portions respectively. rotation.

The needle changer according to claim 22 or 23, wherein the grip portion has at least one notch, and the bottom of the syringe has at least one side flap, when the cartridge is inserted into the sley The side flap of the bottom of the syringe is inserted into the corresponding notch of the grip portion.

The needle changer according to claim 24, wherein the needle changer further comprises a controller for controlling the action of the drive unit in accordance with a current state.

26. A split continuous syringe for use with a needle changer as claimed in claims 1-25.