CN112156281A - Needle locking structure, needle tube length adjusting method and needle device - Google Patents
Needle locking structure, needle tube length adjusting method and needle device Download PDFInfo
- Publication number
- CN112156281A CN112156281A CN202011085255.4A CN202011085255A CN112156281A CN 112156281 A CN112156281 A CN 112156281A CN 202011085255 A CN202011085255 A CN 202011085255A CN 112156281 A CN112156281 A CN 112156281A
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- needle
- base
- needle tube
- spring
- locking
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- 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
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
-
- 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
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Physics & Mathematics (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the field of medical instruments, and particularly discloses a needle locking structure, a needle tube length adjusting method and a needle device. The needle locking structure comprises a needle tube and a needle locking sleeve, the needle locking sleeve comprises a first base and a second base, the first base and the second base are rotatably and movably connected, and a needle hole is formed in the needle locking sleeve; a torsion spring is arranged between the first base and the second base, a spring coil of the torsion spring is aligned with the pinhole, the first torsion arm is connected with the first base, and the second torsion arm is connected with the second base; the needle tube penetrates through the needle hole and the spring ring, and the spring ring holds the needle tube tightly. Through foretell lock needle structure, adjust the use length of needle tubing to satisfy the user demand of different occasions.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a needle locking structure, a needle tube length adjusting method and a needle device.
Background
Various types of needle devices are the most common disposable consumables used by medical institutions and most commonly used. In different use occasions, the length of the needle tube has different requirements. In the existing needle structure, in order to meet the use requirements of different occasions, needle types with different lengths need to be configured, the purchase cost is high, and the situations such as type selection errors are easy to occur in the use process.
Disclosure of Invention
The invention aims to provide a needle locking structure, a needle tube length adjusting method and a needle device.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a needle locking structure comprises a needle tube and a needle locking sleeve, wherein the needle locking sleeve comprises a first base and a second base, the first base and the second base are rotatably and movably connected, and a needle hole is formed in the needle locking sleeve; a torsion spring is arranged between the first base and the second base, a spring coil of the torsion spring is aligned with the pinhole, the first torsion arm is connected with the first base, and the second torsion arm is connected with the second base; the needle tube penetrates through the needle hole and the spring ring, and the spring ring holds the needle tube tightly.
When the needle is used, the spring ring tightly embraces the needle tube, so that the needle locking sleeve and the needle tube are relatively fixed, and the length of the needle tube extending out of the needle locking sleeve is relatively fixed. When the length of the needle tube needs to be adjusted, external force is applied to drive the first base to rotate relative to the second base until the spring coil releases the needle tube. At the moment, the needle locking sleeve can slide relative to the needle tube, after the needle locking sleeve slides to a target position relative to the needle tube, the external force applied between the first base and the second base is removed, and the spring coil tightly embraces the needle tube again under the action of elastic potential energy.
Through the lock needle structure, the use length of adjustment needle tubing that can be nimble to satisfy the user demand of different occasions.
Preferably, the inner diameter of the coil is smaller than the outer diameter of the needle tube in the natural state. After the needle tube is inserted into the spring coil, the spring coil is always in a relaxation energy storage state, and the spring coil tightly holds the needle tube through the elastic potential energy of the spring coil.
Preferably, the first base and the second base together enclose a mounting cavity, and the torsion spring is arranged in the mounting cavity.
Preferably, the torsion spring is fixedly connected with the first base and the second base respectively in the circumferential direction of the needle tube.
Preferably, the torsion spring is fixedly connected with the first base along the circumferential direction of the needle tube; the second base on be equipped with the annular guide slot that sets up around the pinhole, the shape and the guide slot of second torque arm match, second torque arm part or all insert in the guide slot.
Because the first base and the second base are movably connected in a rotating mode, under the needle locking state, the needle tube is tightly embraced by the spring coil, and if external force is continuously applied to push the first base to move towards the direction in which the spring coil continuously expands relative to the second base, the first base and the second base can normally rotate. However, if the applied external force is opposite to the external force direction required by the relaxation of the spring coil, the holding force of the spring coil on the needle tube is increased, and the loads borne by the first base and the second base are also large, so that the needle tube, the spring coil, the first base and the second base can be damaged.
Therefore, by arranging the guide groove, when the first base moves relative to the second base along the direction of the torsional spring continuing to relax and store energy, the guide groove plays a limiting role in the second torsion arm; on the contrary, the second torsion arm can be partially withdrawn from the guide groove, so that enough space is reserved for the movement of the first base relative to the second base, and the purposes of protecting the needle tube, the spring coil, the first base and the second base are achieved. Whether the direction of the applied external force is correct can be judged through the magnitude of the external force required by the first base to rotate relative to the second base.
By controlling the length of the second torque arm and the central angle corresponding to the guide groove, the second torque arm can be ensured not to be withdrawn from the guide groove completely, and the connection reliability is improved.
Preferably, the first base is provided with a connecting convex column extending along the axial direction of the needle tube, the first torsion arm comprises a connecting ring, and the connecting ring is sleeved on the connecting convex column. The outer diameter of the connecting convex column can be slightly larger than the diameter of the connecting ring, and the connecting ring is locked with the connecting convex column through elasticity.
A method for adjusting the length of a needle tube uses the needle locking structure,
when no external force is applied, the spring ring clasps the needle tube, and the locking sleeve is fixed in the axial direction relative to the needle tube;
applying external force to drive the first base to rotate relative to the second base towards the relaxation energy storage direction of the torsion spring until the spring coil loosens the needle tube;
after the relative position of the locking sleeve and the needle tube is adjusted to the target position, the external force is removed, the spring coil is reset under the driving of the elastic potential energy of the torsion spring, the needle tube is tightly held again, and the length adjustment of the needle tube is completed.
A needle device comprising a locking needle arrangement as described above.
An infusion needle comprises the lock needle structure.
A blood taking needle comprises the needle locking structure.
An injection needle comprising a locking needle structure as described above.
Drawings
FIG. 1 is a schematic structural diagram of a latch structure according to the present embodiment;
FIG. 2 is a schematic view of a locking pin sleeve in the locking pin structure of the present embodiment;
FIG. 3 is a schematic structural view of the locking pin structure of the present embodiment with the locking sleeve removed;
FIG. 4 is a schematic structural view of the latch structure of the present embodiment with the second base removed;
fig. 5 is a schematic structural view of the latch structure of the present embodiment with the first base removed.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
As shown in fig. 1 and 2, a locking needle structure comprises a needle tube 1 and a locking needle sleeve, wherein the locking needle sleeve comprises a first base 21 and a second base 22, the first base 21 and the second base 22 are movably connected in a rotating manner, and the first base 21 and the second base 22 jointly enclose a mounting cavity. The lock needle sleeve is provided with a needle hole.
As shown in fig. 2 and 3, the installation cavity is provided with a torsion spring 3, a coil 32 of the torsion spring 3 is aligned with the pinhole, a first torsion arm 33 is connected with the first base 21, and a second torsion arm 31 is connected with the second base 22. The needle tube 1 passes through the needle hole and the spring coil 32, and the spring coil 32 holds the needle tube 1 tightly. In the natural state, the inner diameter of the coil 32 is smaller than the outer diameter of the needle tube 1. Because the inner diameter of the spring coil is smaller than the outer diameter of the needle tube, after the needle tube 1 is inserted into the spring coil 32, the spring coil 32 is always in a relaxation energy storage state, and the spring coil 32 can hold the needle tube 1 tightly through the elastic potential energy of the spring coil 32. The difference value between the inner diameter of the spring coil and the outer diameter of the needle tube is D, D is more than 0 and less than or equal to 0.8mm, and the value range of D is different according to different needle types.
When the needle is used, the spring coil 32 embraces the needle tube 1, so that the needle locking sleeve and the needle tube 1 are relatively fixed, and the length of the needle tube 1 extending out of the needle locking sleeve is relatively fixed. When the length of the needle cannula 1 needs to be adjusted, an external force is applied to drive the first base 21 to rotate relative to the second base 22 until the spring coil 32 releases the needle cannula 1. At this time, the needle locking sleeve can slide relative to the needle tube 1, after the needle locking sleeve slides to the target position relative to the needle tube 1, the external force applied between the first base 21 and the second base 22 is removed, and the spring coil 32 clasps the needle tube 1 again under the action of elastic potential energy.
Through the lock needle structure, the use length of adjustment needle tubing 1 that can be nimble to satisfy the user demand of different occasions.
In a preferred embodiment, the torsion spring 3 is fixedly connected to the first base 21 and the second base 22 along the circumferential direction of the needle tube 1. The first base 21 and the second base 22 are respectively provided with a connecting convex column 23 extending along the axial direction of the needle tube 1, the first torsion arm 33 comprises a connecting ring 34, the connecting ring 34 is sleeved on the connecting convex column 23, and the connection form between the connecting ring 34 and the connecting convex column 23 can be seen with reference to fig. 4.
In a preferred embodiment, as shown in fig. 4 and 5, the torsion spring 3 is fixedly connected to the first base 21 along the circumferential direction of the needle tube 1. The second base 22 is provided with a guide groove 24 annularly arranged around the pinhole, the shape of the second torque arm 31 is matched with the guide groove 24, and part or all of the second torque arm 31 is inserted into the guide groove 24. The first base 21 is provided with a connecting convex column 23 extending along the axial direction of the needle tube 1, the first torque arm 33 comprises a connecting ring 34, and the connecting ring 34 is sleeved on the connecting convex column 23.
A method for adjusting the length of the needle tube 1 uses the needle locking structure,
when no external force is applied, the spring coil 32 tightly holds the needle tube 1, and the locking sleeve 2 is fixed relative to the needle tube 1 in the axial direction;
the first base 21 is driven to rotate relative to the second base 22 in the energy-expanding and energy-storing direction of the torsion spring 3 by applying external force until the coil 32 releases the needle tube 1;
after the relative position of the locking sleeve 2 and the needle tube 1 is adjusted to the target position, the external force is removed, the spring coil 32 is reset under the driving of the elastic potential energy of the torsion spring 3, the needle tube 1 is clasped again, and the length adjustment of the needle tube 1 is completed.
A needle device comprising a locking needle arrangement as described above.
An infusion needle comprises the lock needle structure.
A blood taking needle comprises the needle locking structure.
An injection needle comprising a locking needle structure as described above.
In conclusion, the above description is only for the preferred embodiment of the present invention and should not be construed as limiting the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A lock needle structure which is characterized in that: the needle locking device comprises a needle tube and a needle locking sleeve, wherein the needle locking sleeve comprises a first base and a second base which are rotatably and movably connected, and a needle hole is formed in the needle locking sleeve; a torsion spring is arranged between the first base and the second base, a spring coil of the torsion spring is aligned with the pinhole, the first torsion arm is connected with the first base, and the second torsion arm is connected with the second base; the needle tube penetrates through the needle hole and the spring ring, and the spring ring holds the needle tube tightly.
2. The lock pin structure of claim 1, wherein: in a natural state, the inner diameter of the spring coil is smaller than the outer diameter of the needle tube.
3. The lock pin structure of claim 1, wherein: first base and second base enclose synthetic installation cavity jointly, the torsional spring setting in the installation cavity.
4. The lock pin structure of claim 1, wherein: the torsion spring is fixedly connected with the first base and the second base in the circumferential direction of the needle tube respectively.
5. The lock pin structure of claim 1, wherein: the torsion spring is fixedly connected with the first base along the circumferential direction of the needle tube; the second base on be equipped with the annular guide slot that sets up around the pinhole, the shape and the guide slot of second torque arm match, second torque arm part or all insert in the guide slot.
6. The lock pin structure according to claim 4 or 5, wherein: the first base is provided with a connecting convex column extending along the axial direction of the needle tube, the first torsion arm comprises a connecting ring, and the connecting ring is sleeved on the connecting convex column.
7. A needle tube length adjusting method is characterized in that: with the locking pin structure according to any one of claims 1-6,
when no external force is applied, the spring ring clasps the needle tube, and the locking sleeve is fixed in the axial direction relative to the needle tube;
applying external force to drive the first base to rotate relative to the second base towards the relaxation energy storage direction of the torsion spring until the spring coil loosens the needle tube;
after the relative position of the locking sleeve and the needle tube is adjusted to the target position, the external force is removed, the spring coil is reset under the driving of the elastic potential energy of the torsion spring, the needle tube is tightly held again, and the length adjustment of the needle tube is completed.
8. A needle device characterized by: comprising a locking pin arrangement according to any one of claims 1-6.
9. An infusion needle, which is characterized in that: comprising a locking pin arrangement according to any one of claims 1-6.
10. A blood collection needle, characterized in that: comprising a locking pin arrangement according to any one of claims 1-6.
11. An injection needle characterized by: comprising a locking pin arrangement according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085255.4A CN112156281B (en) | 2020-10-12 | 2020-10-12 | Needle locking structure, needle tube length adjusting method and needle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011085255.4A CN112156281B (en) | 2020-10-12 | 2020-10-12 | Needle locking structure, needle tube length adjusting method and needle device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112156281A true CN112156281A (en) | 2021-01-01 |
| CN112156281B CN112156281B (en) | 2022-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011085255.4A Active CN112156281B (en) | 2020-10-12 | 2020-10-12 | Needle locking structure, needle tube length adjusting method and needle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112156281B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202654622U (en) * | 2012-04-18 | 2013-01-09 | 革新（厦门）运动器材有限公司 | Fixing structure of headstand machine lying plate extending tube |
| CN202811708U (en) * | 2012-09-19 | 2013-03-20 | 浙江泰普森休闲用品有限公司 | Locking device |
| CN103622748A (en) * | 2013-11-03 | 2014-03-12 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Torque return and longitudinal rapid adjustment electrosurgical knife head holding handle |
| CN204122847U (en) * | 2014-09-02 | 2015-01-28 | 浙江皇冠电动工具制造有限公司 | Electric reciprocating saw blade active length governor motion |
| CN104334210A (en) * | 2012-03-07 | 2015-02-04 | 医疗部件有限公司 | Huber needle assembly |
| CN105944187A (en) * | 2016-05-25 | 2016-09-21 | 江苏德尔福医疗器械有限公司 | Hidden needle mechanism with injection needle insertion depth adjustable |
| US20190083704A1 (en) * | 2014-04-24 | 2019-03-21 | Becton, Dickinson And Company | Cannula deployment mechanism |
| CN110548202A (en) * | 2019-08-20 | 2019-12-10 | 山东连发医用塑胶制品有限公司 | Safe adjustable insulin syringe needle |
-
2020
- 2020-10-12 CN CN202011085255.4A patent/CN112156281B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104334210A (en) * | 2012-03-07 | 2015-02-04 | 医疗部件有限公司 | Huber needle assembly |
| CN202654622U (en) * | 2012-04-18 | 2013-01-09 | 革新（厦门）运动器材有限公司 | Fixing structure of headstand machine lying plate extending tube |
| CN202811708U (en) * | 2012-09-19 | 2013-03-20 | 浙江泰普森休闲用品有限公司 | Locking device |
| CN103622748A (en) * | 2013-11-03 | 2014-03-12 | 宁波市鄞州青林医疗器械技术咨询有限公司 | Torque return and longitudinal rapid adjustment electrosurgical knife head holding handle |
| US20190083704A1 (en) * | 2014-04-24 | 2019-03-21 | Becton, Dickinson And Company | Cannula deployment mechanism |
| CN204122847U (en) * | 2014-09-02 | 2015-01-28 | 浙江皇冠电动工具制造有限公司 | Electric reciprocating saw blade active length governor motion |
| CN105944187A (en) * | 2016-05-25 | 2016-09-21 | 江苏德尔福医疗器械有限公司 | Hidden needle mechanism with injection needle insertion depth adjustable |
| CN110548202A (en) * | 2019-08-20 | 2019-12-10 | 山东连发医用塑胶制品有限公司 | Safe adjustable insulin syringe needle |
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| Publication number | Publication date |
|---|---|
| CN112156281B (en) | 2022-02-11 |
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Address after: 8 / F, building 1, 1388 cangxing street, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province Applicant after: Puang (Hangzhou) Medical Technology Co.,Ltd. Address before: 8 / F, building 1, 1388 cangxing street, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province Applicant before: PU'ANG (HANGZHOU) MEDICAL TECHNOLOGY Co.,Ltd. |
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