CN113577455A

CN113577455A - Anesthetic needle

Info

Publication number: CN113577455A
Application number: CN202110844853.3A
Authority: CN
Inventors: 胡蓉; 倪云成; 邹海波; 周浩宬; 郭刚文
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-07-26
Filing date: 2021-07-26
Publication date: 2021-11-02
Anticipated expiration: 2041-07-26
Also published as: CN113577455B

Abstract

The invention discloses an anesthetic needle, which comprises a needle cylinder and a needle head, wherein the top end of the needle cylinder is sealed by a sealing plate, the bottom end of the needle cylinder is provided with a needle outlet hole, the needle outlet hole is connected with the needle cylinder, a first piston and a second piston are both arranged in the needle cylinder, the top end of the first piston is connected with a first piston rod, the first piston rod movably penetrates through the second piston and the sealing plate, the first piston rod and the second piston are in sliding seal, the top end of the second piston is connected with the second piston rod, the second piston rod movably penetrates through the sealing plate, the needle head is fixed on the needle handle, the needle handle is fixed on the bottom wall of the first piston, the first piston is provided with a liquid outlet hole, a circulation channel is arranged in the needle handle, the circulation channel is communicated with the liquid outlet hole and the needle head, liquid above the first piston can be discharged through the liquid outlet hole, the circulation channel and the needle head, the needle head is positioned in the needle cylinder, the structure can improve the safety, simultaneously, the needle head is convenient to store.

Description

Anesthetic needle

Technical Field

The invention relates to the technical field of medical instruments, in particular to an anesthetic needle.

Background

Anesthesia means that a patient loses the feeling wholly or locally temporarily by a medicine or other methods to achieve the purpose of painlessness and provide conditions for surgical treatment or other medical examination and treatment.

The anesthesia has two modes, one mode is inhalation type anesthesia, the other mode is injection type anesthesia, the inhalation type anesthesia is general anesthesia, and the injection type anesthesia can be general anesthesia or local anesthesia.

Injection formula anesthesia adopts the anesthetic needle to inject the injection of anesthetic, and when injecting anesthesia at present, anesthetic needle and cylinder are the separation, need be connected anesthetic needle and cylinder during the injection, and the injection finishes to collect anesthetic needle and cylinder respectively, and this kind of mode is because the anesthetic needle is comparatively sharp-pointed when collecting the anesthetic needle, probably stabs medical staff, and the security is poor, accomodates inconveniently.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides an anesthetic needle to solve the problems.

The utility model provides an anesthetic needle, includes cylinder and syringe needle, the top of cylinder adopts the closing plate to seal, and open the bottom of cylinder has a pinhole, and pinhole department is connected with out the cylinder, first piston and second piston all set up in the cylinder, and first piston and second piston all are connected with the inner wall sliding seal of cylinder, and the second piston is located first piston top, and the top of first piston is connected with first piston rod, and first piston rod activity runs through second piston and closing plate, sliding seal between first piston rod and the second piston, and the top of second piston is connected with the second piston rod, and second piston rod activity runs through the closing plate, the syringe needle is fixed on the needle handle, and the needle handle is fixed in the diapire of first piston, and it has out the liquid hole to open on the first piston, has the circulation passageway in the needle handle, and the circulation passageway all communicates with play liquid hole and syringe needle, and the liquid of first piston top can pass through out the liquid hole, And the needle head is positioned in the needle cylinder, the first piston rod is pushed downwards to drive the first piston, the needle handle and the needle head to move downwards, the needle head can penetrate through the needle cylinder, and the needle handle can enter the needle cylinder.

Preferably, the top end of the first piston rod is provided with threads, the first piston rod is rotatably connected with the first piston, and when the bottom end of the first piston is contacted with the inner bottom wall of the syringe, the first piston rod is in threaded connection with the closing plate.

Preferably, the top wall of the first piston is provided with a blind hole, the circumferential wall of the blind hole is provided with an annular groove, the bottom end of the first piston rod is connected with an annular piece, and the annular piece is embedded into the annular groove.

Preferably, a through hole is formed in the side wall of the needle cylinder, a containing tube is connected in the through hole, the inner cavity of the containing tube is in a cuboid shape, a blocking block is arranged in the containing tube in a sliding mode and can completely seal the left end of the containing tube, a fixing plate is fixed in the containing tube through a connecting rod, the left wall of the fixing plate is connected with the right wall of the blocking block through a first spring, the left wall of the blocking block integrally inclines downwards from the direction pointing to the left, in the initial state, a second piston abuts against the blocking block, the blocking block is located in the containing tube, and the first spring is in a compressed state;

the side wall of the needle cylinder is provided with a liquid inlet hole, the liquid inlet hole is positioned above the through hole, and the liquid inlet hole is connected with a liquid inlet hopper;

the first piston is internally provided with a cavity which is communicated with the liquid outlet hole and the circulating pipeline, the bottom wall of the cavity is connected with a second spring, the top end of the second spring is connected with a blocking plate, the blocking plate is positioned in the liquid outlet hole, and the blocking plate completely seals the bottom end of the liquid outlet hole.

Preferably, the height of the syringe is higher than that of the second piston.

Preferably, the height of the bottom wall of the closing plate from the liquid inlet hole is equal to the height of the second piston.

Preferably, the first piston and the second piston are both made of rubber.

Preferably, the syringe comprises a rubber plunger, the rubber plunger is detachably connected with the syringe outlet barrel, and the bottom end of the syringe outlet barrel can be closed by the rubber plunger.

The invention has the beneficial effects that: the structure of the traditional syringe is changed, the first piston and the second piston are arranged in the syringe, the needle head is fixed on the needle handle, the needle handle is fixed on the first piston, the first piston is connected with the first piston rod, and the second piston is connected with the second piston rod; when in use, the first piston rod and the second piston rod are pressed downwards to drive the first piston and the second piston to move downwards, when the bottom wall of the first piston contacts with the inner bottom wall of the syringe, the needle head passes through the syringe, the needle handle enters the syringe, then the needle head is inserted into the anesthetic, the second piston rod is lifted upwards to drive the second piston to move upwards, the anesthetic is sucked into the needle cylinder, then the needle head is inserted into the human body, the second piston rod is pressed downwards to discharge the anesthetic, after the injection is finished, the first piston rod and the second piston rod are pulled to enable the needle head to enter the needle cylinder, and the needle head is arranged in the needle cylinder, when using and when accomodating all need not medical personnel to contact the syringe needle alone, prevent that the syringe needle from stabbing medical personnel, improve the security, the staff of also being convenient for simultaneously uses and accomodates.

Drawings

In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

FIG. 1 is a front sectional view of the present invention;

fig. 2 is an enlarged schematic structural diagram of a position a in fig. 1.

In the attached figure, 1-needle cylinder, 2-needle head, 3-needle outlet cylinder, 4-needle handle, 5-first piston, 6-second piston, 7-first piston rod, 8-second piston rod, 9-closing plate, 10-circulation channel, 11-liquid outlet hole, 12-rubber plunger, 13-accommodating tube, 14-blocking block, 15-connecting rod, 16-fixing plate, 17-first spring, 18-liquid inlet hopper, 19-cavity, 20-second spring and 21-blocking plate.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

Examples

As shown in fig. 1, in this embodiment, an anesthetic needle is provided, which includes a needle cylinder 1 and a needle head 2, a top end of the needle cylinder 1 is sealed by a sealing plate 9, a needle outlet is formed at a bottom end of the needle cylinder 1, a needle outlet cylinder 3 is connected to the needle outlet, a first piston 5 and a second piston 6 are both disposed in the needle cylinder 1, the first piston 5 and the second piston 6 are both connected to an inner wall of the needle cylinder 1 in a sliding and sealing manner, the second piston 6 is located above the first piston 5, a first piston rod 7 is connected to a top end of the first piston 5, the first piston rod 7 movably penetrates through the second piston 6 and the sealing plate 9, the first piston rod 7 and the second piston 6 are in a sliding and sealing manner, a second piston rod 8 is connected to a top end of the second piston 6, the second piston rod 8 movably penetrates through the sealing plate 9, the needle head 2 is fixed to a needle handle 4, the needle handle 4 is fixed to a bottom wall of the first piston 5, a liquid outlet 11 is formed in the first piston 5, have circulation passageway 10 in the needle handle 4, circulation passageway 10 and play liquid hole 11 and syringe needle 2 all communicate, and the liquid of 5 tops of first piston can be discharged after through going out liquid hole 11, circulation passageway 10 and syringe needle 2, syringe needle 2 is located cylinder 1, promotes first piston rod 7 downwards, drives first piston 5, needle handle 4 and 2 downstream of syringe needle, and syringe needle 2 can pass out cylinder 3, and needle handle 4 can get into out in the cylinder 3.

In the embodiment, the traditional syringe structure is changed, a first piston 5 and a second piston 6 are arranged in a syringe 1, wherein the first piston 5 and the second piston 6 are both made of rubber, and a fastening friction force is formed between the first piston 5 and the inner wall of the syringe 1 and between the second piston 6 and the inner wall of the syringe 1, so that the syringe can be fixed in a normal state and can be pushed forcibly, the needle head 2 is fixed on the needle handle 4, the needle handle 4 is fixed on the first piston 5, the first piston 5 is connected with a first piston rod 7, and the second piston 6 is connected with a second piston rod 8; when the device is in an initial state, the first piston 5 is in contact with the second piston 6, the needle 2 is positioned in the needle cylinder 1 at the moment, when the device is used, the first piston rod 7 and the second piston rod 8 are pressed downwards to drive the first piston 5 and the second piston 6 to move downwards, when the bottom wall of the first piston 5 is in contact with the inner bottom wall of the needle cylinder 1, the needle 2 penetrates out of the needle cylinder 3, the needle handle 4 enters out of the needle cylinder 3, then the needle 2 is inserted into anesthetic, the second piston rod 8 is lifted upwards to drive the second piston 6 to move upwards to suck the anesthetic into the needle cylinder 1, then the needle 2 is inserted into a human body, the second piston rod 8 is pressed downwards to discharge the anesthetic, after injection, the first piston rod 7 and the second piston rod 8 are pulled to enable the needle 2 to enter into the needle cylinder 1, so that the needle 2 is arranged in the needle cylinder 1, when the device is used and stored, medical personnel do not need to separately contact with the needle 2, prevent that syringe needle 2 from stabbing medical personnel, improve the security, also be convenient for simultaneously the staff uses and accomodates.

In this embodiment, the top end of the first piston rod 7 has a thread, the first piston rod 7 is rotatably connected to the first piston 5, and when the bottom end of the first piston 5 contacts the inner bottom wall of the syringe 1, the first piston rod 7 is threadedly connected to the closing plate 9. The top that sets up first piston rod 7 in this embodiment has the screw thread, and first piston rod 7 rotates with first piston 5 to be connected, and when the bottom of first piston 5 contacted with the interior diapire of cylinder 1, first piston rod 7 and closing plate 9 threaded connection, when injecting anesthetic, because first piston rod 7 and closing plate 9 threaded connection, increased the fixed stability of first piston 5, syringe needle 2 atress leads to first piston 5 upward movement to increase the degree of difficulty that syringe needle 2 inserted the human body when preventing to insert the human body.

In this embodiment, the top wall of the first piston 5 is provided with a blind hole, the circumferential wall of the blind hole is provided with an annular groove, the bottom end of the first piston rod 7 is connected with an annular piece, and the annular piece is embedded into the annular groove, so that the first piston rod 7 is rotatably connected with the first piston 5.

In this embodiment, the rubber plunger 12 is detachably connected to the needle outlet barrel 3, and the rubber plunger 12 can seal the bottom end of the needle outlet barrel 3.

Example 2

The embodiment is further limited on the basis of embodiment 1, in the embodiment, a through hole is formed in a side wall of the needle cylinder 1, a containing tube 13 is connected in the through hole, an inner cavity of the containing tube 13 is rectangular, a stop block 14 is arranged in the containing tube 13 in a sliding manner, the left end of the containing tube 13 can be completely closed by the stop block 14, a fixing plate 16 is fixed in the containing tube 13 through a connecting rod 15, the left wall of the fixing plate 16 is connected with the right wall of the stop block 14 through a first spring 17, the left wall of the stop block 14 is integrally inclined downwards from the direction pointing from the right to the left, in an initial state, the second piston 6 abuts against the stop block 14, the stop block 14 is located in the containing tube 13, and the first spring 17 is in a compressed state;

the side wall of the needle cylinder 1 is provided with a liquid inlet hole which is positioned above the through hole, and the liquid inlet hole is connected with a liquid inlet hopper 18;

the first piston 5 is internally provided with a cavity 19, the cavity 19 is communicated with the liquid outlet hole 11 and the circulating pipeline 10, the bottom wall of the cavity 19 is connected with a second spring 20, the top end of the second spring 20 is connected with a blocking plate 21, the blocking plate 21 is positioned in the liquid outlet hole 11, and the blocking plate 21 completely seals the bottom end of the liquid outlet hole 11.

The anesthetic needle is generally used once, but in order to save cost in some small clinics, the anesthetic needle is directly used again after being generally sterilized, so that the risk of virus infection is increased, and the anesthesia needle is unsanitary.

In the embodiment, a through hole is arranged on the side wall of the needle cylinder 1, an accommodating tube 13 is arranged in the through hole, a blocking block 14, a connecting rod 15, a fixing plate 16 and a first spring 17 are arranged in the accommodating tube, when in an initial state, the blocking block 14 is abutted by the second piston 6, the blocking block 14 is positioned in the accommodating tube 13, when the second piston 6 is positioned above or below the through hole, the left wall of the blocking block 14 is positioned in the needle cylinder 1 at the moment, the blocking block 14 seals the left end of the accommodating tube 13, because the left wall of the blocking block 14 is integrally inclined downwards from the direction pointing to the left, the second piston 6 is positioned above the through hole, the second piston 6 can move downwards to extrude the blocking block 14 into the accommodating tube 13, when the second piston 6 is positioned below the through hole, the second piston 6 moves upwards until the top wall of the second piston 6 is contacted with the bottom wall of the blocking block 14, the upward movement cannot be continued, consequently can restrict and carry out used repeatedly with it, because traditional inhaling the medicine mode and need moving second piston 6 to syringe 1 bottom upward movement again, because block 14's restriction, can not adopt traditional mode, consequently open at the lateral wall of syringe 1 has the feed liquor hole, and the feed liquor hole is located the through hole top, feed liquor hole department is connected with feed liquor hopper 18, carries out the injection of medicament through feed liquor hopper 18, simultaneously because there is not the restriction of atmospheric pressure, the medicament can directly discharge through syringe needle 2 in getting into syringe 1, has consequently set up barrier plate 21, blocks.

The specific working principle is that in the initial state, the second piston 6 abuts against the blocking block 14, so that the blocking block 14 is positioned in the accommodating tube 13, and the first spring 17 is in a compressed state; when the device is used, the first piston 5 is moved to the bottom of the needle cylinder 1, the second piston 6 is moved to the position above the liquid inlet hole, the left wall of the blocking block 14 enters the needle cylinder 1 at the moment, an anesthetic is injected into the needle cylinder 1 through the liquid inlet hopper 18, the blocking plate 21 blocks the medicament at the moment, the medicament is prevented from being discharged through the needle head 2, when attention needs to be paid, the second spring 20 can support the blocking plate 21 to be positioned in the liquid outlet hole 11 when the needle cylinder 1 is filled with the medicament, and the blocking plate 21 can be pressed down into the cavity 19 when the second piston 6 moves downwards to extrude the medicament, so that the medicament is discharged; after injecting the medicament, insert the syringe needle 2 in the human body, then second piston rod 8 is pressed down, drive second piston 6 downstream, discharge the medicament, the injection finishes, make second piston rod 8 and first piston rod 7 upstream motion, until the roof of second piston 6 and the contact of the 14 diapalls of stopper piece, the bottom of syringe needle 2 is located syringe 1 or play syringe 3 this moment, realize accomodating of syringe needle 2, like this because the unable upward movement of second piston 6, can't inject into the medicament in the syringe 1, stopped completely and carried out used repeatedly with this device.

In this embodiment, the middle of the second piston rod 8 is provided with threads, in an initial state, the second piston rod 8 is in threaded connection with the closing plate 9, the second piston rod 8 is rotatably connected with the second piston 6, the second threaded rod 8 is limited in the initial state, the situation that the instrument cannot be normally used due to downward movement of the second piston 6 caused by mistaken touch in the transportation process is prevented, in other states, the second piston rod 8 is not in threaded connection with the closing plate 9, the second piston rod 8 is convenient to push, and only the second piston 6 needs to be rotated to the position of the through hole.

In this embodiment, the height of the syringe 3 is higher than the height of the second piston 6. The height of the syringe 3 is higher than that of the second piston 6, and when the syringe is stored, the top wall of the second piston 6 is in contact with the bottom wall of the barrier block 14, so that the needle 2 is ensured to be at least positioned in the syringe 3 for storage.

The height of the bottom wall of the closing plate 9 from the liquid inlet hole is equal to the height of the second piston 6 in this embodiment. Set up 9 diapalls of closing plate and highly equal to the height of second piston 6 apart from the height in feed liquor hole, second piston 6 is located this night hole top injection medicament after, seals the feed liquor hole with second piston 6 downstream earlier, inserts syringe needle 2 again in the human body, prevents like this that the medicament from the discharge of feed liquor hole department, also can detect simultaneously whether syringe needle 2 is in the on-state.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.

Claims

1. The utility model provides an anesthetic needle, which is characterized in that, includes cylinder (1) and syringe needle (2), the top of cylinder (1) adopts closing plate (9) to seal, and open the bottom of cylinder (1) has a pinhole, and pinhole department is connected with out cylinder (3), first piston (5) and second piston (6) all set up in cylinder (1), and first piston (5) and second piston (6) all are connected with the inner wall sliding seal of cylinder (1), and second piston (6) are located first piston (5) top, and the top of first piston (5) is connected with first piston rod (7), and second piston (6) and closing plate (9) are run through in the activity of first piston rod (7), sliding seal between first piston rod (7) and second piston (6), and the top of second piston (6) is connected with second piston rod (8), and second piston rod (8) activity runs through closing plate (9), syringe needle (2) are fixed on needle handle (4), and the diapire at first piston (5) is fixed in needle handle (4), and it has liquid hole (11) to open on first piston (5), has circulation passageway (10) in needle handle (4), and circulation passageway (10) all communicate with liquid hole (11) and syringe needle (2), and the liquid of first piston (5) top can be discharged after through liquid hole (11), circulation passageway (10) and syringe needle (2), syringe needle (2) are located cylinder (1), promote first piston rod (7) downwards, drive first piston (5), needle handle (4) and syringe needle (2) downstream, and syringe needle (3) can be passed out in syringe needle (2), and needle handle (4) can get into out in syringe needle (3).

2. An anaesthetic needle as claimed in claim 1 wherein the first plunger rod (7) is threaded at its top end, the first plunger rod (7) is rotatably connected to the first piston (5), and the first plunger rod (7) is threadedly connected to the closure plate (9) when the bottom end of the first piston (5) contacts the inside bottom wall of the barrel (1).

3. The anesthetic needle as claimed in claim 2, characterized in that the first piston (5) has a blind hole on its top wall, an annular groove on its circumferential wall, and an annular piece is connected to the bottom end of the first piston rod (7) and is embedded in the annular groove.

4. The anesthetic needle as claimed in claim 1, wherein a through hole is formed in a side wall of the needle cylinder (1), a containing tube (13) is connected in the through hole, an inner cavity of the containing tube (13) is rectangular, a blocking block (14) is slidably arranged in the containing tube (13), the blocking block (14) can completely seal the left end of the containing tube (13), a fixing plate (16) is fixed in the containing tube (13) through a connecting rod (15), the left wall of the fixing plate (16) is connected with the right wall of the blocking block (14) through a first spring (17), the left wall of the blocking block (14) is integrally inclined downwards from the direction of right pointing to left, in an initial state, the second piston (6) abuts against the blocking block (14), the blocking block (14) is located in the containing tube (13), and the first spring (17) is in a compressed state;

the side wall of the needle cylinder (1) is provided with a liquid inlet hole which is positioned above the through hole, and the liquid inlet hole is connected with a liquid inlet hopper (18);

have cavity (19) in first piston (5), cavity (19) all communicate with play liquid hole (11) and circulation pipeline (10), and the diapire of cavity (19) is connected with second spring (20), and the top of second spring (20) is connected with barrier plate (21), and barrier plate (21) are located play liquid hole (11), and barrier plate (21) are sealed completely with the bottom of going out liquid hole (11).

5. An anaesthetic needle as claimed in claim 4 characterised in that the height of the needle outlet barrel (3) is greater than the height of the second plunger (6).

6. An anaesthetic needle as claimed in claim 4 characterised in that the height of the closure plate (9) from the inlet opening is equal to the height of the second piston (6).

7. An anaesthetic needle as claimed in claim 1 wherein the first piston (5) and second piston (6) are both made of rubber.

8. The anesthetic needle as claimed in claim 1, further comprising a rubber plunger (12), wherein the rubber plunger (12) is detachably connected to the syringe barrel (3), and the rubber plunger (12) can close the bottom end of the syringe barrel (3).