CN111388809A

CN111388809A - Medicine injection needle

Info

Publication number: CN111388809A
Application number: CN202010204764.8A
Authority: CN
Inventors: 不公告发明人
Original assignee: Zheng Yueliang
Current assignee: Zheng Yueliang
Priority date: 2020-03-22
Filing date: 2020-03-22
Publication date: 2020-07-10

Abstract

The invention provides a medical injection needle. The injection device comprises an injection tube, an injection needle head and an injection push rod arranged in the injection tube, wherein a rubber plug is arranged at the end part of the injection push rod, the periphery of the rubber plug is abutted against the inner cylinder wall of the injection tube, a fixed sleeve is arranged at the end part of the injection tube, a connecting sleeve is arranged on the injection needle head and can be sleeved on the fixed sleeve, the injection device also comprises a clamping arm, a driving end, a hinged point and a clamping end are arranged on the clamping arm, and the clamping arm is hinged on the outer cylinder wall; still including solid fixed ring, gu fixed ring can offset in the drive end, gu fixed ring can promote the centre gripping arm and rotate around the pin joint, and the last exposed core of centre gripping arm can compress tightly the adapter sleeve on the fixed cover. Not only can be stably fixed on the injection tube with the syringe needle, when needs are dismantled the syringe needle from the injection tube, can effectively avoid medical personnel's hand to be stained with the liquid medicine of syringe needle moreover.

Description

Medicine injection needle

Technical Field

The present invention relates to a medical injection device, and more particularly, to a medical injection needle.

Background

The medical injector generally comprises an injection tube and an injection push rod arranged in the injection tube, wherein the end part of the injection push rod is provided with a rubber plug, the periphery of the rubber plug is abutted against the inner wall of the injection tube, and the end part of the injection tube is provided with an injection needle head; by pushing and pulling the syringe, the injection liquid can be sucked into the syringe or ejected from the injection needle.

The connection mode between the injection needle and the injection tube of the existing medical injector is as follows: the end part of the injection needle is provided with a connecting sleeve, the injection tube is provided with a fixed sleeve, the connecting sleeve and the fixed sleeve are both made of plastic materials, and the connecting sleeve is tightly matched with the fixed sleeve so as to realize the connection between the injection needle and the injection tube.

However, after the injection needle of the medical injector is used, medical staff need to detach the injection needle from the injection tube, the injection needle can be stained with liquid medicine, the hands of the medical staff are easily stained with the liquid medicine on the injection needle, and the health of the hands of the medical staff is further influenced.

Disclosure of Invention

In view of the above, the present invention is to provide a medical injection needle, which can not only stably fix an injection needle on an injection tube, but also effectively prevent a medical worker from being stained with a medical solution of the injection needle when the injection needle needs to be detached from the injection tube.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a medical injection needle comprises an injection tube, an injection needle head and an injection push rod arranged in the injection tube, wherein the end part of the injection push rod is provided with a rubber plug, the periphery of the rubber plug is abutted against the inner cylinder wall of the injection tube, the end part of the injection tube is provided with a fixed sleeve, the injection needle head is provided with a connecting sleeve, the connecting sleeve can be sleeved on the fixed sleeve,

the injection cylinder is characterized by further comprising a clamping arm, wherein the clamping arm is provided with a driving end, a hinge point and a clamping end, the driving end and the clamping end are located at two ends of the clamping arm, the hinge point is located between the driving end and the clamping end, and the clamping arm is hinged to the outer cylinder wall of the injection cylinder through the hinge point;

still include solid fixed ring, gu fixed ring cover locates the outside of injection tube and can slide along the length direction of injection tube, gu fixed ring can offset in the drive end, gu fixed ring can promote the centre gripping arm and rotate around the pin joint, just the last exposed core of centre gripping arm can compress tightly the adapter sleeve on the fixed cover.

Through the technical scheme, when the injection needle head needs to be installed on the fixing sleeve of the injection tube, the connecting sleeve can be aligned to the fixing sleeve firstly, the fixing ring moves towards the direction of the clamping arm along the length direction of the injection tube, the fixing ring abuts against the driving end, the clamping arm rotates around the hinge point, the clamping end of the clamping arm can press the connecting sleeve on the fixing sleeve, the injection needle head is stably fixed on the injection tube, and medical personnel can stably use the injection needle to inject;

after injection is completed, the injection needle is stained with liquid medicine, medical personnel can move the fixing ring along the length direction of the injection tube to the direction departing from the clamping arm, the fixing ring can be separated from the driving end, the clamping arm loses the interference effect of the fixing ring, and the clamping end of the clamping arm can be easily separated from the fixing sleeve; in the process, the medical staff does not need to touch the injection needle, and the hands of the medical staff can be effectively prevented from being stained with the liquid medicine of the injection needle.

Preferably, the number of the clamping arms is more than two, all the clamping arms are circumferentially distributed along the injection needle, and the clamping ends of all the clamping arms can simultaneously abut against the connecting sleeve.

Through the technical scheme, the clamping ends of the plurality of clamping arms can directly compress a single connecting sleeve, so that the connecting stability between the connecting sleeve and the fixed sleeve is further improved; in addition, the same fixing ring can simultaneously generate a triggering effect on a plurality of clamping arms, and the operation difficulty is small.

Preferably, the syringe further comprises a mounting seat, the number of the mounting seat is consistent with that of the clamping arms, the clamping arms are hinged to the mounting seat through hinge points, and the mounting seat is detachably connected to the syringe through screws.

Through above-mentioned technical scheme, centre gripping arm and mount pad can be dismantled from the injection tube, then disinfect and recycle, effective resources are saved.

Preferably, the clamping end is provided with a convex point, the connecting sleeve is provided with a concave ring, and the convex point can abut against the concave ring of the connecting sleeve.

Through the technical scheme, firstly, when the salient points are abutted to the concave ring, the abutting stability between the clamping end and the connecting sleeve is improved; secondly, the concave ring on the connecting sleeve is circular, no matter which angle the syringe needle rotates to, the bump homoenergetic offsets in the concave ring, and the use convenience is high.

Preferably, the fixed ring is provided with a push block, the number of the push block is consistent with that of the clamping arms, the push block and the clamping arms are arranged in a one-to-one correspondence mode, a first inclined plane is arranged at the end portion of the push block, the thickness of the push block provided with the first inclined plane is smaller as the push block is closer to the driving end, the first inclined plane of the push block can abut against the driving end, and the clamping end of the clamping arm presses the connecting sleeve on the fixed sleeve.

Through the technical scheme, when the connecting sleeve needs to be tightly pressed on the fixing sleeve, the fixing ring can move towards the direction of the injection needle head, the first inclined plane at the end part of the push block can gradually abut against the driving end, so that the clamping arm is gradually pushed to turn over around the hinged point, the clamping end on the clamping arm can abut against the connecting sleeve, and the connecting sleeve is tightly pressed on the fixing sleeve; in addition, the thickness of the push block provided with the first inclined plane is smaller as the push block is closer to the driving end, and the first inclined plane can enter between the driving end and the outer cylinder wall of the injection cylinder more easily.

Preferably, the outer cylinder wall of the injection cylinder is provided with a convex ring body, the clamping arm can abut against the convex ring body, a gap is reserved between the clamping arm provided with the first inclined plane and the outer cylinder wall of the injection cylinder, and the gap is used for the insertion of the first inclined plane at the end part of the push block.

Through above-mentioned technical scheme, the clearance between centre gripping arm and the injection tube urceolus wall, first inclined plane can insert in the clearance more easily to promote whole centre gripping arm to rotate around the pin joint.

Preferably, after the first inclined plane of the push block is inserted into the gap, the end of the push block is used for abutting against the convex ring body.

Through above-mentioned technical scheme, after the exposed core that has first inclined plane enters into the clearance, until exposed core and bulge loop body inconsistent to produce the location effect to solid fixed ring.

Preferably, be equipped with the second inclined plane on the drive end, the drive end thickness that is provided with the second inclined plane reduces along deviating from pin joint one side gradually, be equipped with the mounting groove on solid fixed ring's the interior anchor ring, the quantity of mounting groove is unanimous with the quantity of centre gripping arm, the one-to-one sets up between mounting groove and the centre gripping arm, the groove wall of mounting groove can produce the extrusion with the second inclined plane, and the exposed core of centre gripping arm breaks away from mutually this moment and connecting sleeve.

Through above-mentioned technical scheme, when needs take off injection needle from the injection tube, rotatable solid fixed ring, mounting groove on the solid fixed ring is relative with the drive end of centre gripping arm, medical personnel promote solid fixed ring and remove toward injection needle direction, mounting groove on the solid fixed ring can progressively contact with the drive end that is provided with the second inclined plane gradually, the centre gripping arm can rotate round the pin joint, the last exposed core of centre gripping arm can take place to break away from with the adapter sleeve, at this moment, injection needle can directly break away from the injection tube.

Drawings

Fig. 1 is a first structural schematic diagram of an embodiment, which is used for mainly showing a structural state when a clamping end is pressed on a fixing sleeve;

fig. 2 is a second structural schematic diagram of the embodiment, which is used for mainly showing the structural state when the clamping end is separated from the fixing sleeve;

FIG. 3 is a schematic structural view of the retaining ring;

FIG. 4 is an enlarged view of portion A of FIG. 1;

fig. 5 is an enlarged view of a portion B of fig. 2.

Reference numerals: 1. an injection tube; 2. an injection needle; 3. an injection push rod; 4. a rubber plug; 5. fixing a sleeve; 6. connecting sleeves; 7. a clamp arm; 71. a driving end; 72. a hinge point; 73. a clamping end; 8. a fixing ring; 9. salient points; 10. a concave ring; 11. a push block; 12. a first inclined plane; 13. a convex ring body; 14. a gap; 15. a second inclined plane; 16. mounting grooves; 17. and (7) mounting a seat.

Detailed Description

The following detailed description of the present invention is provided in conjunction with the accompanying drawings 1-5 to make the technical solution of the present invention easier to understand and grasp.

The utility model provides a medicine syringe needle, includes injection tube 1, syringe needle 2, installs injection push rod 3 in injection tube 1, and rubber buffer 4 is installed to injection push rod 3's tip, and rubber buffer 4 periphery is inconsistent with the inner tube wall of injection tube 1.

The end part of the injection tube 1 is provided with a fixed sleeve 5, the injection needle 2 is provided with a connecting sleeve 6, the connecting sleeve 6 can be sleeved on the fixed sleeve 5, and a clearance 14 matching mode is adopted between the connecting sleeve 6 and the fixed sleeve 5.

The injection needle further comprises clamping arms 7, the number of the clamping arms 7 is more than two, and all the clamping arms 7 are distributed along the circumferential direction of the injection needle 2.

Each clamping arm 7 is provided with a driving end 71, a hinge point 72 and a clamping end 73, the driving end 71 and the clamping end 73 are located at two ends of the clamping arm 7, the hinge point 72 is located between the driving end 71 and the clamping end 73, the clamping arm 7 is hinged to the outer cylinder wall of the injection cylinder 1 through the hinge point 72, and the rotating axis of the clamping arm 7 is perpendicular to the length direction of the injection cylinder 1. The clamping end 73 is provided with a convex point 9, the connecting sleeve 6 is provided with a concave ring 10, the concave ring 10 is annular, the center of the concave ring 10 is concentric with the center of the injection needle 2, and the convex point 9 can be abutted against the concave ring 10 of the connecting sleeve 6.

Still include mount pad 17, the quantity of mount pad 17 is unanimous with the quantity of centre gripping arm 7, and centre gripping arm 7 articulates on mount pad 17 through pin joint 72, and mount pad 17 passes through the screw can dismantle to be connected on injection tube 1.

Be equipped with annular solid fixed ring 8 of circle on injection tube 1 lateral wall, gu fixed ring 8 can slide along the length direction of injection tube 1, gu be equipped with ejector pad 11 on the fixed ring 8, the quantity of ejector pad 11 is unanimous with the quantity of centre gripping arm 7, one-to-one sets up between ejector pad 11 and the centre gripping arm 7, ejector pad 11 tip is equipped with first inclined plane 12, the ejector pad 11 thickness that is provided with first inclined plane 12 is more close to drive end 71 and is less, the first inclined plane 12 of ejector pad 11 can offset with drive end 71, the exposed core 73 of centre gripping arm 7 compresses tightly adapter sleeve 6 on fixed cover 5.

The outer cylinder wall of the injection cylinder 1 is provided with a convex ring body 13, the clamping arm 7 can abut against the convex ring body 13, a gap 14 is reserved between the clamping arm 7 provided with the first inclined plane 12 and the outer cylinder wall of the injection cylinder 1, and the gap 14 is used for the insertion of the first inclined plane 12 at the end part of the push block 11. After the first inclined surface 12 of the push block 11 is inserted into the gap 14, the end of the push block 11 is used for abutting against the convex ring body 13 to define the deepest push-in position of the push block 11.

In addition, the driving end 71 is provided with a second inclined surface 15, the thickness of the driving end 71 provided with the second inclined surface 15 is gradually reduced along one side departing from the hinge point 72, the inner annular surface of the fixing ring 8 is provided with mounting grooves 16, the number of the mounting grooves 16 is consistent with that of the clamping arms 7, the mounting grooves 16 and the clamping arms 7 are arranged in a one-to-one correspondence manner, the groove walls of the mounting grooves 16 can be extruded with the second inclined surface 15, and the clamping end 73 of the clamping arm 7 is separated from the connecting sleeve 6 at the moment.

In the specific implementation process:

(1) when the injection needle 2 needs to be installed on the injection tube 1, the connecting sleeve 6 can be initially sleeved on the fixing sleeve 5, the fixing ring 8 is rotated, the push block 11 is aligned to the driving end 71 of the clamping arm 7, the fixing ring 8 is pushed to move towards the direction of the injection needle 2, the first inclined surface 12 on the push block 11 is gradually pushed into the gap 14, the first inclined surface 12 of the push block 11 can be abutted against the driving end 71 of the clamping arm 7 until the end part of the push block 11 is abutted against the convex ring body 13, at the moment, the clamping arm 7 can rotate around the hinge point 72, the convex point 9 on the clamping end 73 of the clamping arm 7 can be embedded with the concave ring 10, and the connecting sleeve 6 of the injection needle 2 can be stably installed on the fixing sleeve 5.

(2) When the injection needle 2 needs to be taken out of the injection tube 1, the fixing ring 8 is pushed to move in the direction away from the injection needle 2 until the push block 11 is completely separated from the driving end 71 of the clamping arm 7, the whole clamping arm 7 is in a free rotation state, and the injection needle 2 can be taken out of the injection tube 1.

(3) When needs take out syringe needle 2 from injection tube 1, also can promote solid fixed ring 8 and remove toward deviating from syringe needle 2 direction, then the solid fixed ring 8 of circumference rotation, gu fixed ring 8's mounting groove 16 aims at the drive end 71 of holding arm 7, promote solid fixed ring 8 again and remove toward syringe needle 2 direction, gu fixed ring 8's mounting groove 16 progressively enters into the drive end 71 that is provided with second inclined plane 15 in, gu fixed ring 8's mounting groove 16 can compress tightly drive end 71 on bulge loop body 13, bump 9 on the tip 73 can separate with concave ring 10, and the distance between the tip 73 of holding arm 7 is great, not only be convenient for syringe needle 2 takes off from injection tube 1, and be convenient for install syringe needle 2 on the installation section of thick bamboo.

The above are only typical examples of the present invention, and besides, the present invention may have other embodiments, and all the technical solutions formed by equivalent substitutions or equivalent changes are within the scope of the present invention as claimed.

Claims

1. The utility model provides a medicine syringe needle, includes injection tube (1), syringe needle (2), installs injection push rod (3) in injection tube (1), and rubber buffer (4) are installed to the tip of injection push rod (3), and rubber buffer (4) periphery is inconsistent with the inner tube wall of injection tube (1), and the tip of injection tube (1) is equipped with fixed cover (5), be equipped with adapter sleeve (6) on syringe needle (2), adapter sleeve (6) can cup joint on fixed cover (5), characterized by:

the injection device is characterized by further comprising a clamping arm (7), wherein a driving end (71), a hinge point (72) and a clamping end (73) are arranged on the clamping arm (7), the driving end (71) and the clamping end (73) are located at two ends of the clamping arm (7), the hinge point (72) is located between the driving end (71) and the clamping end (73), and the clamping arm (7) is hinged to the outer cylinder wall of the injection cylinder (1) through the hinge point (72);

still including solid fixed ring (8), gu fixed ring (8) cover is located the outside of injection tube (1) and can slide along the length direction of injection tube (1), gu fixed ring (8) can offset in drive end (71), gu fixed ring (8) can promote centre gripping arm (7) and rotate around pin joint (72), just hold end (73) on centre gripping arm (7) can compress tightly adapter sleeve (6) on fixed cover (5).

2. A medical injection needle according to claim 1, wherein: the number of the clamping arms (7) is more than two, all the clamping arms (7) are distributed along the circumferential direction of the injection needle (2), and the clamping ends (73) of all the clamping arms (7) can simultaneously abut against the connecting sleeve (6).

3. A medical injection needle according to claim 2, wherein: still include mount pad (17), the quantity of mount pad (17) is unanimous with the quantity of centre gripping arm (7), centre gripping arm (7) articulate on mount pad (17) through pin joint (72), mount pad (17) can dismantle through the screw and connect on injection cylinder (1).

4. A medical injection needle according to claim 1, wherein: be equipped with bump (9) on exposed core (73), be equipped with concave ring (10) on adapter sleeve (6), bump (9) can offset on concave ring (10) of adapter sleeve (6).

5. A medical injection needle according to any of claims 2-3, characterized in that: be equipped with ejector pad (11) on solid fixed ring (8), the quantity of ejector pad (11) is unanimous with the quantity of centre gripping arm (7), the one-to-one sets up between ejector pad (11) and centre gripping arm (7), ejector pad (11) tip is equipped with first inclined plane (12), and ejector pad (11) thickness that is provided with first inclined plane (12) is close to drive end (71) more and is littleer, first inclined plane (12) of ejector pad (11) can offset with drive end (71), the exposed core (73) of centre gripping arm (7) compress tightly adapter sleeve (6) on fixed cover (5).

6. A medical injection needle according to claim 5, wherein: the outer cylinder wall of the injection cylinder (1) is provided with a convex ring body (13), the clamping arm (7) can be abutted against the convex ring body (13), a gap (14) is reserved between the clamping arm (7) provided with a first inclined plane (12) and the outer cylinder wall of the injection cylinder (1), and the gap (14) is used for the insertion of the first inclined plane (12) at the end part of the push block (11).

7. A medical injection needle according to claim 6, wherein: after the first inclined plane (12) of the push block (11) is inserted into the gap (14), the end part of the push block (11) is used for abutting against the convex ring body (13).

8. A medical injection needle according to claim 7, wherein: be equipped with second inclined plane (15) on drive end (71), drive end (71) thickness that is provided with second inclined plane (15) reduces along deviating from pin joint (72) one side step by step, be equipped with mounting groove (16) on the interior anchor ring of solid fixed ring (8), the quantity of mounting groove (16) is unanimous with the quantity of centre gripping arm (7), the one-to-one setting between mounting groove (16) and centre gripping arm (7), the groove wall ability and the second inclined plane (15) of mounting groove (16) produce the extrusion, and the centre gripping end (73) of centre gripping arm (7) break away from mutually with adapter sleeve (6) this moment.