CN111888588A - Acupuncture device is prevented to shell fragment and dog cooperation formula - Google Patents
Acupuncture device is prevented to shell fragment and dog cooperation formula Download PDFInfo
- Publication number
- CN111888588A CN111888588A CN202010725328.5A CN202010725328A CN111888588A CN 111888588 A CN111888588 A CN 111888588A CN 202010725328 A CN202010725328 A CN 202010725328A CN 111888588 A CN111888588 A CN 111888588A
- Authority
- CN
- China
- Prior art keywords
- needle
- stop
- hole
- protection sleeve
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
Abstract
A spring and stop mating anti-needle-stick device, comprising: the rear end of the conduit seat component is provided with an anti-falling structure; the needle protecting sleeve is provided with a needle through hole, a sliding groove and a slot; the stop block is slidably arranged in the sliding chute, one surface of the stop block is matched with the needle tube, and the other surface of the stop block is matched with the anti-falling structure and the elastic sheet; the elastic sheet is sleeved at the front end of the needle protecting sleeve; the limiting sheet is arranged in the slot and is provided with a stop hole; a needle stand which is sleeved on the rear part of the needle protection sleeve; the needle tube penetrates through the catheter seat component, the elastic sheet, the needle protecting sleeve and the limiting sheet and provides support for the stop block, the rear end of the needle tube is fixed in the needle seat, and a protruding buckle is arranged at the position close to the front end. The needle base is pulled backwards, the needle base drives the needle tube to retreat, when the needle tube retreats to the protruding buckle and is blocked by the stop hole of the limiting piece, the front end of the needle tube retreats away from the stop block, the stop block slides towards the sliding groove of the needle protection sleeve under the action of the elastic piece, so that the front end of the needle tube is blocked, the needle point is shielded in the needle protection sleeve, and the safety of a product is improved.
Description
Technical Field
The invention relates to the technical field of needle head protection, in particular to a spring plate and stop block matched type acupuncture-preventing device.
Background
After the existing product with the needle tube is used and pulled out, the needle point of the needle tube is exposed outside more, so that the puncture wound is easily caused to people, particularly, the potential safety hazard is more serious for the medical needle product, and once the used medical needle product causes the puncture wound to people, the possibility of cross infection exists.
Disclosure of Invention
The invention aims at the problems and provides a spring plate and stop block matched anti-acupuncture device.
The purpose of the invention can be realized by the following technical scheme:
a spring and stop mating anti-needle-stick device, comprising:
the rear end of the conduit seat component is provided with an anti-falling structure;
the needle protection sleeve is internally provided with a needle through hole which is communicated along the axis, the front part of the needle protection sleeve is arranged from the rear end of the catheter seat assembly, the front end of the outer wall of the needle protection sleeve is provided with a sliding chute, the sliding chute divides the front end of the needle through hole into two sections, the rear end of the outer wall of the needle protection sleeve is provided with a slot, and the slot divides the rear end of the needle through hole into two sections;
the check block is slidably arranged in the sliding groove of the needle protection sleeve, one surface of the check block facing the inside of the sliding groove of the needle protection sleeve is matched with the needle tube, and the other surface of the check block facing the outside of the sliding groove of the needle protection sleeve is matched with the anti-falling structure and the elastic sheet of the catheter seat component;
the elastic sheet is sleeved at the front end of the needle protection sleeve, is provided with a through hole corresponding to the needle through hole of the needle protection sleeve, and generates elastic deformation through contacting with the other surface of the stop block to provide acting force for the stop block to slide towards the inside of the sliding groove of the needle protection sleeve;
the limiting piece is arranged in the slot of the needle protection sleeve and is provided with a stop hole corresponding to the needle through hole;
a needle stand which is sleeved on the rear part of the needle protection sleeve;
the needle tube penetrates through the catheter seat assembly, the through hole of the elastic sheet, the needle through hole of the needle protection sleeve and the stop hole of the limiting sheet and provides support for the stop block, the rear end of the needle tube is fixed in the needle seat, and a convex buckle with the size larger than that of the stop hole of the limiting sheet is arranged at the position, close to the front end, of the outer wall of the needle tube;
the needle file is pulled backward and is driven the needle tubing and retreat along the axial together, when the needle tubing retreats protruding buckle and is blocked by the stop hole of spacing piece, the front end of needle tubing retreats and leaves the dog, the dog loses the support of needle tubing, under the elasticity restoring force effect of shell fragment, the dog breaks away from with the anti-disengaging structure of conduit saddle subassembly, and slide towards the spout of needle lag is inside, thereby the dog blocks the front end department of the needle through-hole of needle lag, prevent that the front end of needle tubing from stretching out forward, the needle lag, the shielding of dog and spacing piece realization to the needle tubing front end, the needle file continues to be pulled backward, protruding buckle through the needle tubing drives spacing piece, and then drive needle lag and the dog and the shell fragment on it and move backward together, when the needle lag is pulled out from the rear end of conduit saddle subassembly, realize separating with the conduit saddle subassembly.
According to the technical scheme, the anti-falling structure of the conduit seat assembly can be a clamping groove penetrating through the side wall of the conduit seat, and the rear side of the other side of the stop block is provided with a retaining protrusion matched with the clamping groove of the conduit seat.
The shell fragment includes position sleeve portion and elasticity arm, position sleeve portion cover in the front end of needle lag, the front end of position sleeve portion be equipped with needle lag preceding terminal surface matched with location terminal surface, be equipped with the through-hole corresponding with the needle through-hole of needle lag on the location terminal surface, set up the spout with the needle lag and the corresponding breach in dog position on the lateral wall of position sleeve portion, the elasticity arm sets up in the breach of position sleeve portion and the marginal connection of its front end and breach, and the elasticity arm produces elastic deformation through the another side contact with the dog, provides the inside gliding effort of spout toward the needle lag for the dog. The other side of the stop block can be provided with a positioning groove matched with the rear end of the elastic arm part of the elastic sheet.
The front side, the rear side and the two sides of the stop block can be provided with positioning surfaces matched with the sliding grooves of the needle protecting sleeve. And the two sides of the stop block can also be provided with positioning convex ribs matched with the sliding grooves of the needle protecting sleeve.
The sliding groove and the slot of the needle shield can both be arranged along the radial plane.
The limiting piece can be in an L-shaped piece shape, one side of the limiting piece is installed in the slot of the needle protection sleeve and is provided with a stop hole, and the other side of the limiting piece is arranged on the outer wall of the needle protection sleeve. The edge of the stop hole of the limiting sheet can be provided with a flange.
The groove that communicates with the hole is seted up to the front end department of needle tubing, the dog with needle tubing matched with one side can adopt the circular arc transition with the leading flank, when the needle tubing retreats when the dog, the one side of dog hugs closely on the needle tubing outer wall under the elastic restoring force effect of shell fragment to be located the groove of needle tubing outside, make the needle tubing smoothly retreat.
Compared with the prior art, the invention has the beneficial effects that: overall structure is compact, and the operation is simple, the needle file is stimulateeed backward, make the needle file drive the needle tubing retreat along the axial, when the needle tubing retreats protruding buckle and is blocked by the stop hole of spacing piece, the front end of needle tubing retreats and leaves the dog, the dog loses the support of needle tubing, and under the elastic restoring force effect of shell fragment, the inside slip of spout toward the needle lag, thereby block the front end department of the needle through-hole of needle lag, prevent that the front end of needle tubing from stretching out forward, the realization is shielded the front end needle point of needle tubing in the needle lag, the security of product has been improved.
Drawings
Fig. 1 is an exploded view of an embodiment of the present invention.
FIG. 2 is a full sectional view of one embodiment of the present invention.
Fig. 3 is a schematic structural view of a catheter hub assembly in an embodiment of the present invention.
Fig. 4 is an assembly diagram of the needle protecting cover, the stopper, the elastic sheet, the limiting sheet and the needle tube in an embodiment of the invention.
Fig. 5 is a schematic structural view of a needle shield in an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a stopper according to an embodiment of the invention.
Fig. 7 is a schematic structural diagram of a spring piece according to an embodiment of the invention.
FIG. 8 is a partial cross-sectional view of one embodiment of the present invention.
Fig. 9 is a schematic structural view of a position-limiting sheet according to an embodiment of the invention.
FIG. 10 is a schematic view of the structure of the hub and barrel in one embodiment of the present invention.
FIG. 11 is a partial cross-sectional view of an embodiment of the present invention entering a self-destruct state.
Fig. 12 is a schematic structural view of the catheter hub assembly separated from the catheter hub assembly after the self-destruction state is entered in accordance with an embodiment of the present invention.
FIG. 13 is a schematic view of the needle cannula slot passing the stop in one embodiment of the present invention.
The parts in the figures are numbered as follows:
1 conduit seat assembly, 101 conduit seat, 1011 clamping groove, 102 metal wedge, 103 conduit, 104 isolating plug;
2-needle protective sleeves, 201-needle through holes, 202 sliding grooves, 203 slots and 204 concave table surfaces;
3, a stop block, a 301 positioning groove, a 302 stopping bulge, a 303 positioning surface, a 304 positioning convex rib and a 305 arc;
4 spring plates, 401 positioning sleeve parts, 4011 gaps and 402 elastic arm parts;
5, a limiting sheet, 501 stop holes and 502 flanges;
6 needle seats, 601 seat parts and 602 handle parts;
7 needle tube, 701 protruding buckle, 702 groove.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in conjunction with the accompanying drawings to make it clear to those skilled in the art how to practice the present invention. While the invention has been described in connection with preferred embodiments thereof, these embodiments are merely illustrative, and not restrictive, of the scope of the invention.
Referring to fig. 1 and 2, the spring plate and stopper matching type acupuncture prevention device comprises a catheter seat assembly 1, a needle protection sleeve 2, a stopper 3, a spring plate 4, a limiting plate 5, a needle seat 6 and a needle tube 7.
Referring to fig. 2 and 3, the catheter hub assembly 1 comprises a catheter hub 101, a metal wedge 102, a catheter 103, and an isolating plug 104, the metal wedge 102 and the isolating plug 104 being mounted in a back-and-forth arrangement in the catheter hub 101, the catheter 103 extending from the front end of the catheter hub 101 and having its rear end fixed to the metal wedge 102. The rear end of the inner wall of the catheter hub 101 is provided with an anti-disengaging structure for cooperating with the retaining protrusion 302 of the stopper 3 to ensure that the needle shield 2 is connected with the catheter hub 101, see fig. 3, the anti-disengaging structure is a slot 1011 extending through the side wall of the catheter hub 101.
Referring to fig. 2, the front of the needle shield 2 is loaded into the catheter hub 101 from the rear end of the catheter hub 101. Referring to fig. 4 and 5, the needle protection cover 2 is cylindrical, a needle through hole 201 which is through along an axis is arranged in the needle protection cover 2, a sliding groove 202 which is arranged along a radial surface is arranged at the front end of the outer wall of the needle protection cover 2, the sliding groove 202 divides the front end of the needle through hole 201 into two sections, the sliding groove 202 is used for installing a stop block 3, a slot 203 which is arranged along the radial surface is arranged at the rear end of the outer wall of the needle protection cover 2, the slot 203 divides the rear end of the needle through hole 201 into two sections, and the slot 203 is used for installing a limiting piece 5.
Referring to fig. 4, 6 and 8, the stopper 3 is slidably mounted in the sliding groove 202 of the needle shield 2, one surface of the stopper 3 facing the sliding groove 202 is engaged with the needle tube 7, the other surface of the stopper 3 facing the outside of the sliding groove 202 is provided with a positioning groove 301 and a retaining protrusion 302 arranged in the front and back direction, the positioning groove 301 is used for the rear end of the elastic arm 402 of the elastic sheet 4 to be clamped in, the retaining protrusion 302 is used for being engaged with the clamping groove 1011 of the catheter holder 101, the front side, the rear side and the two sides of the stopper 3 are provided with positioning surfaces 303 engaged with the sliding groove 202, and the two sides of the stopper 3 are further provided with positioning ribs 304 engaged with the sliding groove 202.
Referring to fig. 4, 7 and 8, the resilient plate 4 includes a positioning sleeve portion 401 and a resilient arm portion 402, the positioning sleeve portion 401 is sleeved on the front end of the needle protection sleeve 2, the front end of the positioning sleeve portion 401 is provided with a positioning end surface matched with the front end surface of the needle protection sleeve 2, the positioning end surface is provided with a through hole corresponding to the needle through hole 201 of the needle protection sleeve 2, a notch 4011 corresponding to the slide groove 202 and the stopper 3 is formed on the side wall of the positioning sleeve portion 401, the resilient arm portion 402 is disposed in the notch 4011 of the positioning sleeve portion 401, the front end of the resilient arm portion is connected with the edge of the notch 4011, the resilient arm portion 402 provides the stopper 3 with an acting force sliding into the slide groove 202 through resilient deformation, and the rear end of the resilient arm portion 402 is matched with the positioning groove 301 of the stopper.
Referring to fig. 4 and 9, the position-limiting sheet 5 is in an L-shaped sheet shape, one side of the position-limiting sheet 5 is arranged in the slot 203 of the needle shield 2 in an interference manner and is provided with a position-stopping hole 501 corresponding to the needle through hole 201 of the needle shield 2, and the edge of the position-stopping hole 501 may be further provided with a flange 502 to ensure that one side of the position-limiting sheet 5 is arranged in the slot 203 of the needle shield 2 in an interference manner. The back end department of the outer wall of the needle shield 2 is also provided with a concave mesa 204 which is parallel to the axis of the needle shield 2 and is concave, see fig. 5, the concave mesa 204 is arranged corresponding to the notch of the slot 203, so that the assembly and disassembly of the spacing piece 5 are facilitated, and the other side of the spacing piece 5 is arranged on the concave mesa 204 of the needle shield 2.
Referring to fig. 2 and 9, the needle holder 6 includes a holder portion 601 and a handle portion 602, the holder portion 601 has an inner hole and a needle fixing hole, the inner hole is arranged in the holder portion 601 and is in front-back communication along an axis, the holder portion 601 is used for sheathing the needle shield 2 and the rear portion of the catheter holder 101, the needle fixing hole is used for fixing the rear end of the needle tube 7, and the handle portion 602 is connected to the side of the holder portion 601. The needle tube 7 penetrates through an inner hole of the guide tube 103, an inner hole of the metal wedge 102, the isolation plug 104, a through hole of the elastic sheet 4, a needle through hole 201 of the needle protection sleeve 2 and a stop hole 501 of the limiting sheet 5 and provides support for the stop 3, the front end of the needle tube 7 is a needle point and is exposed out of the front end of the guide tube 103, the rear end of the needle tube 7 is fixed in a needle fixing hole of a seat body 601 fixed on the needle seat 6, a protruding buckle 701 protruding along the circumferential direction is arranged at the position, close to the front end, of the outer wall of the needle tube 7, the outer diameter of the protruding buckle 701 is larger than the stop hole 501 of the limiting sheet 5 and smaller than the inner hole of the guide tube 103, the inner hole of the metal wedge 102, the through hole of the elastic sheet 4 and the needle through hole 201 of the needle protection sleeve 2, and the axial distance.
During assembly, the stopper 3 is first installed into the sliding groove 202 of the needle shield 2, and one side of the limiting piece 5 is installed into the slot 203 of the needle shield 2. Then, the rear end of the needle tube 7 is inserted from the front end of the needle through hole 201 of the needle shield 2, passes through the stop hole 501 of the stop piece 5 backwards, and then extends out from the rear end of the needle through hole 201 of the needle shield 2. Then, the rear end of the needle tube 7 is inserted into the needle fixing hole after passing through the inner hole of the needle base 6 and is fixed by environment-friendly quick-drying glue. Then the rear part of the needle shield 2 is installed into the inner hole of the seat body 601 of the needle seat 6, the rear end face of the needle shield 2 is abutted against the bottom surface of the inner hole of the seat body 601, the elastic sheet 4 is sleeved at the front end of the needle shield 2 at the same time or in sequence, the elastic arm part 402 of the elastic sheet 4 is contacted with the stop block 3 to generate elastic deformation, and provides acting force for the stop block 3 to slide towards the inside of the sliding groove 202. The forward end of the needle cannula 7 is then inserted into the catheter hub assembly 1, the catheter hub assembly 1 being an assembled kit, and the forward end of the needle cannula 7 is inserted from the rear end of the catheter hub 101 and advanced sequentially through the septum 104 and the metal wedge 102 into the catheter 103. Finally, the front part of the needle shield 2 is installed into the catheter holder 101 from the rear end of the catheter holder 101, the body 601 of the needle holder 6 is sleeved on the rear part of the catheter holder 101, at this time, the needle tip of the needle tube 7 is exposed from the front end of the catheter 103, the exposed length of the needle tip meets the standard requirement, and the retaining protrusion 302 of the stopper 3 is arranged in the clamping groove 1011 of the catheter holder 101 to axially limit, so that the needle shield 2 is well connected with the catheter holder 101 without external force. Thus, the assembly of the anti-acupuncture device is completed, and the anti-acupuncture device is in an unused state.
When the puncture-preventing device is used for puncture in clinic, the handle part 602 of the needle base 6 is held by hand to drive the needle base 6 and the needle tube 7 to move backwards. Referring to fig. 11, when the needle tube 7 is retracted to the position that the protruding buckle 701 is blocked by the position-stopping hole 501 of the position-limiting plate 5, the front end of the needle tube 7 is retracted away from the stopper 3, the stopper 3 loses the support of the needle tube 7, the position-stopping protrusion 302 of the stopper 3 is separated from the slot 1011 of the catheter holder 101 under the elastic restoring force of the elastic arm 402 of the elastic piece 4, the stopper 3 slides toward the inside of the sliding groove 202 of the needle shield 2, thereby blocking the front end of the needle through hole 201 of the needle shield 2 and preventing the front end of the needle tube 7 from extending forward, at this time, the front end of the needle tube 7 is shielded in the needle shield 2 by the stopper 3 and the position-limiting plate 5, the needle tube 7 and the needle shield 2 cannot move relatively along the axis, and the needle-pricking. Meanwhile, since the retaining protrusion 302 of the stopper 3 is disengaged from the notch 1011 of the catheter hub 101, the anti-slip function between the stopper 3 and the catheter hub 101 is disabled, and the catheter hub assembly 1 is separable as a whole.
Referring to fig. 12, the handle 602 of the needle holder 6 is continuously held to drive the needle holder 6 and the needle tube 7 to move backward, the protruding buckle 701 of the needle tube 7 drives the limiting piece 5, and further drives the needle protection cover 2 and the stop block 3 and the elastic piece 4 thereon to move backward together, and when the needle protection cover 2 is pulled out from the rear end of the catheter holder 101, the needle protection cover is separated from the catheter holder assembly 1.
It should be noted that, for the needle tube 7 having the slit 702 at the front end, consideration is given to the case where the slit 702 of the needle tube 7 passes the stopper 3 in an extreme case during the retraction of the needle tube 7. For the stopper 3 of this embodiment, since the stopper 3 is a block and the surface of the stopper 3 that fits with the needle tube 7 is a whole surface structure, and the length of the surface is greater than the length of the groove 702 of the needle tube 7, and the surface and the front side surface of the stopper 3 are transited by the arc 305, as shown in fig. 13, when the groove 702 of the needle tube 7 retreats past the stopper 3, most of the surface of the stopper 3 that fits with the needle tube 7 is located on the surface of the needle tube 7, and tightly attached to the needle tube 7 under the action of the elastic piece 4 until the groove 702 of the needle tube 7 completely passes the arc 305 of the stopper 3, and the stopper 3 will not be clamped into the groove 702 of the needle tube 7, so that the needle tube 7 can be smoothly pulled out, and a pause feeling will not.
It should be noted that many variations and modifications of the embodiments of the present invention fully described are possible and are not to be considered as limited to the specific examples of the above embodiments. The above examples are given by way of illustration of the invention and are not intended to limit the invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (10)
1. The utility model provides a device is prevented acupuncture to shell fragment and dog complex formula which characterized in that includes:
the rear end of the conduit seat component is provided with an anti-falling structure;
the needle protection sleeve is internally provided with a needle through hole which is communicated along the axis, the front part of the needle protection sleeve is arranged from the rear end of the catheter seat assembly, the front end of the outer wall of the needle protection sleeve is provided with a sliding chute, the sliding chute divides the front end of the needle through hole into two sections, the rear end of the outer wall of the needle protection sleeve is provided with a slot, and the slot divides the rear end of the needle through hole into two sections;
the check block is slidably arranged in the sliding groove of the needle protection sleeve, one surface of the check block facing the inside of the sliding groove of the needle protection sleeve is matched with the needle tube, and the other surface of the check block facing the outside of the sliding groove of the needle protection sleeve is matched with the anti-falling structure and the elastic sheet of the catheter seat component;
the elastic sheet is sleeved at the front end of the needle protection sleeve, is provided with a through hole corresponding to the needle through hole of the needle protection sleeve, and generates elastic deformation through contacting with the other surface of the stop block to provide acting force for the stop block to slide towards the inside of the sliding groove of the needle protection sleeve;
the limiting piece is arranged in the slot of the needle protection sleeve and is provided with a stop hole corresponding to the needle through hole;
a needle stand which is sleeved on the rear part of the needle protection sleeve;
the needle tube penetrates through the catheter seat assembly, the through hole of the elastic sheet, the needle through hole of the needle protection sleeve and the stop hole of the limiting sheet and provides support for the stop block, the rear end of the needle tube is fixed in the needle seat, and a convex buckle with the size larger than that of the stop hole of the limiting sheet is arranged at the position, close to the front end, of the outer wall of the needle tube;
the needle base is pulled backwards to drive the needle tube to retreat along the axial direction, when the needle tube retreats to the convex buckle and is blocked by the stop hole of the limiting sheet, the front end of the needle tube retreats to leave the stop block, the stop block loses the support of the needle tube, under the action of the elastic restoring force of the elastic sheet, the stop block is separated from the anti-falling structure of the catheter base component and slides towards the inside of the sliding groove of the needle protecting sleeve, so that the stop block blocks the front end of the needle through hole of the needle protecting sleeve to prevent the front end of the needle tube from extending forwards, and the needle protecting sleeve, the stop block and the limiting sheet realize the shielding of,
the needle file continues to be by the rearward pulling, drives spacing piece through the protruding buckle of needle tubing, and then drives needle lag and the dog and the shell fragment on it and remove backward together, when the needle lag is pulled out from the rear end of pipe seat subassembly, realizes separating with the pipe seat subassembly.
2. The shrapnel and baffle matched anti-acupuncture device as claimed in claim 1, wherein the anti-falling structure of the conduit seat component is a clamping groove which penetrates through the side wall of the conduit seat, and the back side of the other side of the baffle is provided with a retaining bulge matched with the clamping groove of the conduit seat.
3. The shrapnel and stopper matched anti-acupuncture device according to claim 1 or 2, wherein the shrapnel comprises a positioning sleeve part and an elastic arm part, the positioning sleeve part is sleeved on the front end of the needle protection sleeve, the front end of the positioning sleeve part is provided with a positioning end surface matched with the front end surface of the needle protection sleeve, the positioning end surface is provided with a through hole corresponding to the needle through hole of the needle protection sleeve, the side wall of the positioning sleeve part is provided with a notch corresponding to the position of the sliding groove of the needle protection sleeve and the stopper, the elastic arm part is arranged in the notch of the positioning sleeve part, the front end of the elastic arm part is connected with the edge of the notch, and the elastic arm part generates elastic deformation by contacting with the other surface of the stopper to provide the stopper with acting force sliding towards the inside of the sliding groove of the.
4. The shrapnel and stop matched acupuncture resistant device according to claim 3, wherein the other surface of the stop is provided with a positioning groove matched with the rear end of the elastic arm part of the shrapnel.
5. A spring and stop cooperating anti-needle-stick device according to any of claims 1, 2 and 4, wherein the stop has positioning surfaces on its front, back and sides for engaging with the slide groove of the needle shield.
6. The spring and stop mating anti-needlestick device of claim 5, in which the stop has locating ribs on both sides that mate with the slots of the needle shield.
7. The spring and stop mating anti-needle stick device of any of claims 1, 2, 4, and 6, wherein the slide groove and slot of the needle shield are disposed along a radial plane.
8. The shrapnel and stop cooperating type acupuncture resistant device according to any one of claims 1, 2, 4 and 6, wherein the limiting sheet is in an L-shaped sheet shape, one side of the limiting sheet is installed in the slot of the needle shield and is provided with a stop hole, and the other side of the limiting sheet is arranged on the outer wall of the needle shield.
9. The spring and stop mating anti-needle-stick device according to claim 8, wherein the edge of the stop hole of the stop piece is provided with a flange.
10. The shrapnel and stop cooperating type acupuncture-proof device according to any one of claims 1, 2, 4, 6 and 8, wherein a groove communicated with the inner hole is formed at the front end of the needle tube, the side of the stop cooperating with the needle tube and the front side face adopt circular arc transition, when the needle tube retreats past the stop, one side of the stop clings to the outer wall of the needle tube under the elastic restoring force of the shrapnel and is positioned outside the groove of the needle tube, so that the needle tube retreats smoothly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725328.5A CN111888588A (en) | 2020-07-24 | 2020-07-24 | Acupuncture device is prevented to shell fragment and dog cooperation formula |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010725328.5A CN111888588A (en) | 2020-07-24 | 2020-07-24 | Acupuncture device is prevented to shell fragment and dog cooperation formula |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111888588A true CN111888588A (en) | 2020-11-06 |
Family
ID=73190002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010725328.5A Pending CN111888588A (en) | 2020-07-24 | 2020-07-24 | Acupuncture device is prevented to shell fragment and dog cooperation formula |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111888588A (en) |
-
2020
- 2020-07-24 CN CN202010725328.5A patent/CN111888588A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108697853B (en) | Two-piece syringe carrier assembly with damper | |
| EP3626290B1 (en) | Safe insulin pen needle | |
| AP1319A (en) | Self-retracting IV catheter introducer. | |
| US20070161960A1 (en) | Lancet device | |
| CN108937960B (en) | Automatic needle retraction type blood taking needle | |
| US9844327B2 (en) | Safety lancing device | |
| CN112930205B (en) | Safety syringe | |
| CN111436951B (en) | Blood taking needle | |
| US20140200522A1 (en) | Safe vein detained needle | |
| CN111888586A (en) | Acupuncture device is prevented to spacing shell fragment and dog cooperation formula | |
| CN212491029U (en) | Acupuncture device is prevented to shell fragment and dog cooperation formula | |
| CN111888581A (en) | Safety syringe with needle protector | |
| CN111888588A (en) | Acupuncture device is prevented to shell fragment and dog cooperation formula | |
| CN212491027U (en) | Acupuncture device is prevented to spacing shell fragment and dog cooperation formula | |
| US6761705B1 (en) | Safety syringe device with a needle bending device | |
| WO2021147811A1 (en) | Indwelling needle with shielding needle eccentric baffle piece | |
| CN212466755U (en) | Acupuncture device is prevented to elasticity lantern ring and dog cooperation formula | |
| CN212491028U (en) | Acupuncture device is prevented to elasticity lantern ring and separation blade cooperation formula | |
| CN111888587A (en) | Acupuncture device is prevented to elasticity lantern ring and dog cooperation formula | |
| TWM528755U (en) | Syringe with safety sleeve | |
| CN111888585A (en) | Acupuncture device is prevented to elasticity lantern ring and separation blade cooperation formula | |
| WO2020006751A1 (en) | Syringe | |
| CN110732060A (en) | Safety needle sleeve | |
| CN111166348B (en) | Blood taking needle | |
| CN113855939A (en) | Safety protection device for syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: No.14, Xingji Road, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Applicant after: Beipu Medical Technology Co.,Ltd. Address before: No.14, Xingji Road, Yongxing street, Longwan District, Wenzhou City, Zhejiang Province Applicant before: Beipu Medical Technology Co.,Ltd. |