CN110538360B - Self-locking safety needle for transfusion port - Google Patents
Self-locking safety needle for transfusion port Download PDFInfo
- Publication number
- CN110538360B CN110538360B CN201910914454.2A CN201910914454A CN110538360B CN 110538360 B CN110538360 B CN 110538360B CN 201910914454 A CN201910914454 A CN 201910914454A CN 110538360 B CN110538360 B CN 110538360B
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- needle
- hole
- box body
- bottom plate
- plate
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- 238000001802 infusion Methods 0.000 claims abstract description 25
- 238000001647 drug administration Methods 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims description 18
- 238000012377 drug delivery Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003225 polyurethane elastomer Polymers 0.000 claims description 2
- 241000700605 Viruses Species 0.000 abstract description 5
- 208000035473 Communicable disease Diseases 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 7
- 208000015181 infectious disease Diseases 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
-
- 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
- A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
- A61M5/158—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
- A61M2005/1586—Holding accessories for holding infusion needles on the body
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention discloses a self-locking safety needle for an infusion port. The self-locking safety needle comprises a needle locking box, wherein the needle locking box comprises a box body, the lower surface of the box body is attached to the skin and is close to an infusion port implanted under the skin, a cavity is formed in the box body, pinholes are formed on the upper surface and the lower surface of the box body respectively, a needle point of a drug administration needle penetrates through the pinholes at the lower end to be communicated with the infusion port, one end of an upper cavity wall of the box body extends downwards to form a positioning block, a wire path is arranged at the other end of the upper cavity wall of the box body and a connected side cavity wall, the lower end of a spring plate of an elastic seat is obliquely connected with one end of a bottom plate, a lower through hole is formed in the bottom plate, the spring plate is provided with a through hole, the elastic seat is arranged in the cavity, the bottom plate moves on the lower cavity wall of the cavity, one end of a connecting wire is connected with the drug administration needle, and the other end of the connecting wire penetrates through the wire path to be connected with the bottom plate. The invention has the effects of locking the needle tip of the drug administration needle after the needle is pulled out, avoiding false puncture, preventing related microorganism infectious diseases such as viruses and the like, and being rapid and safe for needle pulling.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a self-locking safety needle for an infusion port.
Background
In the existing transfusion field, long-term transfusion is generally applied to a transfusion port, when a drug administration needle is pulled out, because the needle is perpendicular to the transfusion port, a large force is required to pull out the needle head, in the operation, operators or surrounding accompanying staff are easily injured due to overlarge movement amplitude or out-of-control movement, and patients needing the transfusion port are more patients with virus carriers or related diseases through blood infection, and the needle body is stained with liquid containing viruses, so that infection is easily caused when the related staff is injured.
Disclosure of Invention
To address one or more of the above problems, the present invention provides a self-locking safety needle for an infusion port.
According to one aspect of the present invention, the self-locking safety needle for an infusion port includes a drug delivery needle, a locking needle cartridge, an elastic seat, and a connecting cord.
The needle locking box comprises a box body, the lower surface of the box body is attached to the skin and is close to an infusion port implanted under the skin, a cavity is formed in the box body, needle holes are formed in the upper surface and the lower surface of the box body respectively, a needle point of a drug administration needle penetrates through the needle holes in the lower end to be communicated with the infusion port, one end of an upper cavity wall of the box body extends downwards and vertically to form a positioning block, and a wire path is formed in the other end of the upper cavity wall of the box body and connected side cavity walls.
The elastic seat comprises a bottom plate and an elastic plate, wherein the lower end of the elastic plate is obliquely connected with the upper end of the bottom plate, the bottom plate is provided with a lower through hole, the elastic plate is provided with a pin hole, the elastic seat is positioned in the cavity, and the bottom plate moves on the lower cavity wall of the cavity.
One end of the connecting wire is connected with the drug feeding needle, and the other end of the connecting wire penetrates through the wiring channel to be connected with the bottom plate.
When the spring plate is compressed and attached to the lower surface of the positioning block, the lower end of the drug administration needle can sequentially penetrate through the upper end outlet needle hole, the passing needle hole, the lower through hole and the lower end outlet needle hole to be connected with the transfusion harbor for drug administration, and the connecting wire is loosely arranged in the wiring channel.
When the needle locking box is fixed by one hand of a user and the drug administration needle is pulled up by the other hand, the connecting wire is gradually stretched and straightened in the wiring channel, the connecting wire pulls the bottom plate to move towards the other end, the bottom plate seals the lower end to go out a needle hole, the upper end of the spring plate is separated from the positioning block and elastically opens to be attached to the upper cavity wall of the cavity, and the drug administration needle is always positioned in the cavity.
The self-locking safety needle for the transfusion port is characterized in that the medicine feeding needle is connected with the elastic seat, when the medicine feeding needle is pulled out, the elastic seat is shifted, the needle outlet hole at the lower end is sealed by the elastic seat, the needle point of the medicine feeding needle is sealed in the cavity, and the medicine feeding needle does not slide out of the needle locking box when the medicine feeding needle is pulled out, so that the medicine feeding needle is prevented from being stabbed by medical staff or surrounding accompanying staff by mistake, the infection of microorganism infectious diseases such as related viruses is prevented, the safety is improved, meanwhile, the device is convenient to operate, the experience requirement and the technical requirement of medical staff on operation dangerous instruments can be reduced, the needle pulling speed and the technique are greatly improved, the large-scale popularization and application are facilitated, and secondly, the uppermost position of the medicine feeding needle is controlled by the length of a connecting wire, the control precision is high, and accidents are avoided; and the elastic seat is provided with a positioning block in a compression state, when the elastic seat is completely unfolded, the upper end of the elastic seat is abutted against the upper cavity wall, and the upper and lower positions of the elastic seat can be effectively controlled in a fixed state, so that the safety self-locking capacity is improved.
In some embodiments, the elastic seat further comprises a stop plate vertically connected to the other end of the bottom plate, and the stop plate is located below the upper end of the elastic plate.
In some embodiments, the base plate, the spring plate and the stopper plate are a unitary structure or the base plate, the spring plate and the stopper plate are connected by an adhesive.
In some embodiments, the spring plate is polyurethane elastomer. The beneficial effects are as follows: the elastic plate of the material is convenient to process, has good elastic performance, and does not influence nuclear magnetic resonance operation of patients.
In some embodiments, the lower cavity wall of the box body is also provided with a moving channel, the width of the moving channel is the same as that of the bottom plate, the moving channel is communicated with the wiring channel, two limiting plates are formed on the moving channel and are respectively connected with two side walls of the cavity, a through-length slideway is formed in the middle of each limiting plate, and the slideway is in clearance fit with the width of the spring plate.
In some embodiments, the bottom surface of the bottom plate is provided with balls that engage the bottom chamber wall of the cartridge body.
In some embodiments, the routing channel comprises a longitudinal channel and a transverse channel which are communicated with each other, the longitudinal channel is positioned in the side cavity wall of the box body, the lower end of the longitudinal channel extends to the inner surface of the side cavity wall of the box body to form a lower line hole, the inner end of the transverse channel extends to the upper surface of the upper cavity wall of the box body to form an upper line hole, and the connecting line penetrates through the upper line hole, the transverse channel, the longitudinal channel and the lower line hole to connect the bottom plate.
In some embodiments, the needle passing hole is a oblong or rectangular hole, the needle exiting hole is in interference fit with the needle body of the administration needle, the diameter of the lower through hole, and the width of the needle passing hole are in clearance fit with the needle body.
In some embodiments, the administration needle comprises a needle body, the rear end of the needle body is communicated with the liquid storage device through the infusion tube, the front end of the needle body sequentially penetrates through the upper end needle outlet hole, the needle passing hole, the lower through hole, the lower end needle outlet hole and penetrates into the skin to connect with the infusion port for administration, the upper end of the needle body is provided with an operation end, and the operation end is connected with the upper end of the connecting wire.
In some embodiments, the operating end is made of plastic, the middle of the operating end is integrally coated on the outer wall of the needle body, and two holding pieces are formed at the outer end of the operating end.
Drawings
FIG. 1 is a schematic view of a self-locking safety needle for an infusion port according to an embodiment of the invention;
FIG. 2 is a schematic view of the self-locking safety needle of FIG. 1 in a withdrawn state;
FIG. 3 is a schematic front view of the lock needle case of FIG. 1;
FIG. 4 is a schematic sectional view of the lock needle box of FIG. 3 taken along line A-A;
FIG. 5 is a schematic view in section B-B of the lock needle cartridge of FIG. 3;
FIG. 6 is a schematic C-C sectional view of the lock needle cartridge of FIG. 3;
FIG. 7 is a schematic D-D sectional view of the lock needle cartridge of FIG. 3;
FIG. 8 is a three-dimensional schematic view of the elastomeric seat of FIG. 1;
FIG. 9 is a schematic front view of the resilient base of FIG. 8;
FIG. 10 is a schematic top view of the resilient base of FIG. 8;
FIG. 11 is a schematic bottom view of the resilient base of FIG. 8;
FIG. 12 is a schematic front view of the administration needle of FIG. 1;
FIG. 13 is a schematic top view of the administration needle of FIG. 12;
a drug delivery needle 1, a needle body 10, an operating end 11 and a holding piece 12;
the needle locking box 2, the box body 20, the cavity 21, the needle outlet hole 22, the positioning block 23, the wiring channel 24, the upper wire hole 244, the transverse channel 242, the longitudinal channel 241, the lower wire hole 243, the moving channel 25, the limiting plate 26 and the slideway 27;
the elastic seat 3, the bottom plate 31, the spring plate 32, the stop plate 33, the lower through hole 34, the through pin hole 35, the ball 36 and the connecting wire 4.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Figures 1-13 schematically illustrate a self-locking safety needle for an infusion port according to one embodiment of the invention. As shown, the device comprises a drug delivery needle 1, a lock needle box 2, an elastic seat 3 and a connecting wire 4.
The needle locking box 2 comprises a box body 20, the lower surface of the box body 20 is attached to the skin and is close to an infusion port implanted under the skin, a cavity 21 is formed in the box body 20 in a hollow mode, needle holes 22 are formed in the upper surface and the lower surface of the box body 20 respectively, the needle point of the drug administration needle 1 penetrates through the needle holes 22 at the lower end to be communicated with the infusion port, one end of an upper cavity wall of the box body 20 extends downwards vertically to form a positioning block 23, and a wire channel 24 is formed in the other end of the upper cavity wall of the box body 20 and connected side cavity walls.
The elastic seat 3 comprises a bottom plate 31 and an elastic plate 32, the lower end of the elastic plate 32 is obliquely connected with the upper end of the bottom plate 31, the bottom plate 31 is provided with a lower through hole 34, the elastic plate 32 is provided with a pinhole 35, the elastic seat 3 is positioned in the cavity 21, and the bottom plate 31 moves on the lower cavity wall of the cavity 21.
One end of the connecting wire 4 is connected with the drug administration needle 1, and the other end of the connecting wire 4 passes through the wiring channel 24 and is connected with the bottom plate 31.
When the spring plate 32 is compressed and attached to the lower surface of the positioning block 23, the lower end of the drug administration needle 1 can sequentially pass through the upper end needle outlet hole 22, the needle passing hole 35, the lower through hole 34 and the lower end needle outlet hole 22 to be connected with the transfusion port for drug administration, and the connecting wire 4 is loosely arranged in the wiring channel 24.
When the user fixes the needle locking box 2 with one hand and pulls up the drug delivery needle 1 with the other hand, the connecting wire 4 is gradually stretched and straightened in the wire track 24, the connecting wire 4 pulls the bottom plate 31 to move towards the other end, meanwhile, the bottom plate 31 seals the lower end needle outlet hole 22, the upper end of the spring plate 32 is separated from the positioning block 23 and elastically opens and adheres to the upper cavity wall of the cavity 21, and the drug delivery needle 1 is always positioned in the cavity 21.
The self-locking safety needle for the transfusion port is characterized in that the medicine feeding needle 1 is connected with the elastic seat 3, when the medicine feeding needle 1 is pulled out, the elastic seat 3 shifts, the needle outlet hole 22 at the lower end is sealed, the needle tip of the medicine feeding needle is sealed in the cavity, and the medicine feeding needle 1 does not slide out of the needle locking box when being pulled out, so that the medicine feeding needle 1 is prevented from stabbing medical staff or surrounding accompanying staff, the infection of microorganism infectious diseases such as related viruses is prevented, the safety is improved, meanwhile, the device is convenient to operate, the experience requirement and the technical requirement of medical staff on operation dangerous instruments can be reduced, the needle pulling speed and the technology are greatly improved, the large-scale popularization and application are facilitated, and secondly, the uppermost position of the medicine feeding needle 1 is controlled due to the length of the connecting wire 4, the control precision is high, and accidents are avoided; and the elastic seat 3 is provided with the positioning block 23 in a compressed state, when the elastic seat is completely unfolded, the upper end of the elastic seat is abutted against the upper cavity wall, and the upper and lower positions of the elastic seat are both in a fixed state, so that the safety self-locking capability is improved.
Preferably, the elastic seat 3 further comprises a stop plate 33, the stop plate 33 is vertically connected to the other end of the bottom plate 31, and the stop plate 33 is located below the upper end of the elastic plate 32. The beneficial effects are as follows: the stopper plate 33 can effectively control the lowermost end position of the spring plate 32, thereby improving the positional accuracy.
Preferably, the bottom plate 31, the spring plate 32 and the stopper plate 33 are integrally formed or the bottom plate 31, the spring plate 32 and the stopper plate 33 are connected by an adhesive.
Preferably, the spring plate 32 is polyurethane elastic rubber. The beneficial effects are as follows: the spring plate 32 of this material is easy to process, has good elastic properties, and does not affect patient nmr operations.
Preferably, the lower cavity wall of the box body 20 is also provided with a moving channel 25, the width of the moving channel 25 is the same as that of the bottom plate 31, the moving channel 25 is communicated with the wiring channel 24, two limiting plates 26 are formed on the moving channel 25, the limiting plates 26 are respectively connected with two side walls of the cavity 21, a through-length slideway 27 is formed in the middle of the limiting plates 26, and the slideway 27 and the elastic plate 32 are in clearance fit in width. The beneficial effects are as follows: this moving path 25 arrangement can effectively ensure the straightness of movement of the elastic seat 3, ensure the movement accuracy, and then improve the needle movement accuracy and controllability.
Preferably, the bottom surface of the bottom plate 31 is provided with balls 36, and the balls 36 are attached to the wall of the lower cavity of the box body 20. The beneficial effects are as follows: the rolling friction of the ball 36 is small in friction resistance relative to the sliding friction of the surface, flexible in movement and free of blocking.
Preferably, the trace 24 includes a longitudinal channel 241 and a transverse channel 242 which are mutually communicated, the longitudinal channel 241 is located in the side cavity wall of the box body 20, the lower end of the longitudinal channel 241 extends towards the inner surface of the side cavity wall of the box body 20 to form a lower line hole 243, the inner end of the transverse channel 242 extends towards the upper surface of the upper cavity wall of the box body 20 to form an upper line hole 244, and the connecting line 4 passes through the upper line hole 244, the transverse channel 242, the longitudinal channel 241 and the lower line hole 243 to connect the bottom plate 31.
Preferably, the through hole 35 is a oblong or rectangular hole, the outlet hole 22 is in interference fit with the needle body 10 of the administration needle 1, the diameter of the lower through hole 34 and the width of the through hole 35 are in clearance fit with the needle body 10. The beneficial effects are as follows: this setting can effectively guarantee to give the needle 1 tight seal when infusing, and it is convenient when extracting, crosses long round hole or the rectangular hole of pinhole 35 and select soon moreover, can effectively guarantee the removal of elastic seat 3 and the needle 1's that gives medicine to reciprocate and have not interfered.
Preferably, the administration needle 1 comprises a needle body 10, the rear end of the needle body 10 is communicated with a liquid storage device through an infusion tube, the front end of the needle body 10 sequentially passes through an upper end needle outlet hole 22, a needle passing hole 35, a lower through hole 34 and a lower end needle outlet hole 22 and penetrates into a skin connection infusion port to administer medicine, an operation end 11 is arranged at the upper end of the needle body 10, and the operation end 11 is connected with the upper end of the connecting wire 4.
Preferably, the operation end 11 is made of plastic, the middle of the operation end 11 is integrally coated on the outer wall of the needle body 10, two holding pieces 12 are formed at the outer end of the operation end 11, and the holding pieces 12 can be folded upwards for a certain angle, so that the needle can be pulled upwards during holding. The beneficial effects are as follows: the setting operation is convenient.
Preferably, the grip tab 12 may be a butterfly tab.
Preferably, the holding piece 12 can be turned upwards by half a turn of 90 degrees, and the upward pulling force is vertical force at the moment, no component force exists in the horizontal direction, so that the pulling force can be reduced, and the smaller the pulling force is, the more easily the amplitude is controlled.
The holding piece 12 of the butterfly wing-shaped piece is turned upwards for half a turn by 90 degrees, an operator fixes the box body 20 by one hand and lifts the holding piece 12 of the butterfly wing-shaped piece above by one hand to pull out the needle.
What has been described above is merely some embodiments of the present invention. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (8)
1. A self-locking safety needle for an infusion port is characterized by comprising a drug administration needle (1), a needle locking box (2), an elastic seat (3) and a connecting wire (4),
the needle locking box (2) comprises a box body (20), the lower surface of the box body (20) is attached to the skin and is close to an infusion port implanted under the skin, a cavity (21) is formed in the box body (20), needle holes (22) are respectively formed in the upper surface and the lower surface of the box body (20), the needle points of the drug administration needles (1) penetrate through the needle holes (22) at the lower end to be communicated with the infusion port, one end of an upper cavity wall of the box body (20) vertically extends downwards to form a positioning block (23), a wiring channel (24) is formed in the other end of the upper cavity wall of the box body (20) and a side cavity wall connected with the other end of the upper cavity wall,
the elastic seat (3) comprises a bottom plate (31) and a spring plate (32), the lower end of the spring plate (32) is obliquely connected with one end of the bottom plate (31), the bottom plate (31) is provided with a lower through hole (34), the spring plate (32) is provided with a pin hole (35), the elastic seat (3) is positioned in the cavity (21), the bottom plate (31) moves on the lower cavity wall of the cavity (21),
one end of the connecting wire (4) is connected with the drug delivery needle (1), the other end of the connecting wire (4) passes through the wiring channel (24) to be connected with the bottom plate (31),
when the spring plate (32) is compressed and attached to the lower surface of the positioning block (23), the lower end of the drug delivery needle (1) can sequentially pass through the upper end of the drug outlet needle hole (22), the needle passing hole (35), the lower through hole (34) and the lower end of the drug outlet needle hole (22) to be connected with the transfusion port for drug delivery, the connecting wire (4) is loosely arranged in the wiring channel (24),
when a user fixes the needle locking box (2) by one hand and pulls up the drug delivery needle (1) by the other hand, the connecting wire (4) is gradually stretched and straightened in the wiring channel (24), the connecting wire (4) pulls the bottom plate (31) to move towards the other end, meanwhile, the bottom plate (31) seals the lower end of the needle outlet hole (22), the upper end of the spring plate (32) is separated from the positioning block (23) and elastically opens and adheres to the upper cavity wall of the cavity (21), and the drug delivery needle (1) is always positioned in the cavity (21);
the elastic seat (3) further comprises a stop plate (33), the stop plate (33) is vertically connected with the other end of the bottom plate (31), and the stop plate (33) is positioned below the upper end of the elastic plate (32);
the box body (20) lower chamber wall still is equipped with removal way (25), remove way (25) with the width of bottom plate (31) is the same, remove way (25) intercommunication walk line way (24), be formed with two limiting plates (26) on removing way (25), limiting plates (26) are connected respectively cavity (21) both sides wall, form slide (27) of logical length in the middle of limiting plates (26), slide (27) with the width clearance fit of spring plate (32).
2. The self-locking safety needle for an infusion port according to claim 1, wherein the bottom plate (31), the spring plate (32) and the stopper plate (33) are of an integral structure or the bottom plate (31), the spring plate (32) and the stopper plate (33) are connected by an adhesive.
3. A self-locking safety needle for an infusion port according to claim 2, wherein the spring plate (32) is polyurethane elastomer.
4. The self-locking safety needle for an infusion port according to claim 1, wherein the bottom surface of the bottom plate (31) is provided with balls (36), and the balls (36) are attached to the lower cavity wall of the box body (20).
5. The self-locking safety needle for an infusion port according to claim 1, wherein the trace (24) comprises a longitudinal trace (241) and a transverse trace (242) which are communicated with each other, the longitudinal trace (241) is located in a side cavity wall of the box body (20), a lower trace hole (243) is formed by extending a lower end of the longitudinal trace (241) to an inner surface of the side cavity wall of the box body (20), an upper trace hole (244) is formed by extending an inner end of the transverse trace (242) to an upper surface of an upper cavity wall of the box body (20), and the connecting line (4) passes through the upper trace hole (244), the transverse trace (242), the longitudinal trace (241) and the lower trace hole (243) to be connected with the bottom plate (31).
6. A self-locking safety needle for an infusion port according to claim 1, characterized in that the needle passing hole (35) is a oblong or rectangular hole, the needle outlet hole (22) is in interference fit with the needle body (10) of the administration needle (1), the diameter of the lower through hole (34) and the width of the needle passing hole (35) are in clearance fit with the needle body (10).
7. The self-locking safety needle for the transfusion harbor according to claim 1, wherein the drug delivery needle (1) comprises a needle body (10), the rear end of the needle body (10) is communicated with a liquid storage device through a transfusion tube, the front end of the needle body (10) sequentially penetrates through the upper end of the needle outlet hole (22), the needle passing hole (35), the lower through hole (34), the lower end of the needle outlet hole (22) and penetrates into skin to be connected with the transfusion harbor for drug delivery, the upper end of the needle body (10) is provided with an operation end (11), and the operation end (11) is connected with the upper end of the connecting wire (4).
8. The self-locking safety needle for an infusion port according to claim 7, wherein the operation end (11) is made of plastic, the middle of the operation end (11) is integrally coated on the outer wall of the needle body (10), and two holding pieces (12) are formed at the outer end of the operation end (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910914454.2A CN110538360B (en) | 2019-09-25 | 2019-09-25 | Self-locking safety needle for transfusion port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910914454.2A CN110538360B (en) | 2019-09-25 | 2019-09-25 | Self-locking safety needle for transfusion port |
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| Publication Number | Publication Date |
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| CN110538360A CN110538360A (en) | 2019-12-06 |
| CN110538360B true CN110538360B (en) | 2024-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910914454.2A Active CN110538360B (en) | 2019-09-25 | 2019-09-25 | Self-locking safety needle for transfusion port |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113244482B (en) * | 2021-06-03 | 2025-02-11 | 苏州林华医疗器械股份有限公司 | Safety non-destructive needle |
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| CA2821552A1 (en) * | 2012-07-31 | 2014-01-31 | Becton, Dickinson And Company | Subcutaneous infusion set with side port fluid connector |
| CN109999269A (en) * | 2019-05-07 | 2019-07-12 | 山东新华安得医疗用品有限公司 | Locking needle apparatus |
| CN211272851U (en) * | 2019-09-25 | 2020-08-18 | 国旭天华（苏州）医疗器械科技有限公司 | A self-locking safety needle for infusion port |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014049886A1 (en) * | 2012-09-28 | 2014-04-03 | テルモ株式会社 | Puncture device and medical fluid application device |
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2019
- 2019-09-25 CN CN201910914454.2A patent/CN110538360B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101352587A (en) * | 2007-07-25 | 2009-01-28 | 钱良 | Medical device for preventing puncture wound by needle |
| CA2821552A1 (en) * | 2012-07-31 | 2014-01-31 | Becton, Dickinson And Company | Subcutaneous infusion set with side port fluid connector |
| CN109999269A (en) * | 2019-05-07 | 2019-07-12 | 山东新华安得医疗用品有限公司 | Locking needle apparatus |
| CN211272851U (en) * | 2019-09-25 | 2020-08-18 | 国旭天华（苏州）医疗器械科技有限公司 | A self-locking safety needle for infusion port |
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| Publication number | Publication date |
|---|---|
| CN110538360A (en) | 2019-12-06 |
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