CN221771101U - A safe indwelling needle - Google Patents
A safe indwelling needle Download PDFInfo
- Publication number
- CN221771101U CN221771101U CN202420385670.9U CN202420385670U CN221771101U CN 221771101 U CN221771101 U CN 221771101U CN 202420385670 U CN202420385670 U CN 202420385670U CN 221771101 U CN221771101 U CN 221771101U
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- Prior art keywords
- needle
- seat
- catheter
- safety
- puncture needle
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- 230000001681 protective effect Effects 0.000 claims abstract description 36
- 238000001802 infusion Methods 0.000 claims description 9
- 238000005192 partition Methods 0.000 claims 1
- 210000001124 body fluid Anatomy 0.000 abstract description 8
- 239000010839 body fluid Substances 0.000 abstract description 8
- 208000015181 infectious disease Diseases 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 3
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000009471 action Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 210000004204 blood vessel Anatomy 0.000 description 6
- 239000003814 drug Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- 230000035764 nutrition Effects 0.000 description 4
- 235000016709 nutrition Nutrition 0.000 description 4
- 208000024248 Vascular System injury Diseases 0.000 description 2
- 208000012339 Vascular injury Diseases 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012377 drug delivery Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
- Media Introduction/Drainage Providing Device (AREA)
Abstract
The utility model discloses a safe type detaining needle, which comprises a needle seat, a puncture needle, a catheter seat, a detaining catheter, a safe seat and a protective sleeve, wherein the detaining catheter is fixedly arranged at the front end of the catheter seat, the front end of the needle seat is detachably connected with the rear end of the catheter seat, the puncture needle is fixedly arranged at the front end of the needle seat, one end of the puncture needle extends outwards and can penetrate through the catheter seat and the detaining catheter, the safety seat is arranged between the needle seat and the catheter seat, is slidably sleeved on the puncture needle, and is corrugated and sleeved on the puncture needle, two ends of the protective sleeve are fixedly connected with the needle seat and the safety seat respectively, and when the needle seat is disassembled, the safety seat can slide onto the needle point of the puncture needle and drives the protective sleeve to stretch so as to cover and protect the puncture needle completely; through the combined action of the safety seat and the protective sleeve, when the safety seat slides to the needle point of the puncture needle, the protective sleeve is driven to stretch, the puncture needle is completely covered, and the needle puncture injury caused by the puncture needle and the infection of medical staff or the pollution of the environment caused by body fluid on the puncture needle are avoided.
Description
Technical Field
The utility model relates to the technical field of medical instruments, in particular to a safe indwelling needle.
Background
The venous indwelling needle is a medical device connected with the high-pressure injector and used for venous indwelling transfusion, is mainly applied to clinical venipuncture, and is used for taking medicine and providing nutrition for a patient, and simultaneously, vascular injury caused by repeated puncture can be avoided, pain of the patient is relieved, and the operation intensity of nurses is also reduced.
In use, the indwelling catheter is guided to puncture a vein through the puncture needle, then the puncture assembly is pulled out, and the indwelling catheter is used for continuous arteriovenous transfusion of liquid medicine to a patient. Because the puncture assembly is disposable, in order to avoid the needle to stab people in the garbage disposal or recovery process and cause secondary cross infection, the existing intravenous transfusion remaining needle is attached with a safety protection structure to protect the used puncture needle.
For example, patent document CN 217548697U discloses a safety indwelling needle, which is characterized in that after a drug delivery hose is inserted into a vein of a patient, a needle seat is moved rightward, the needle seat drives a puncture needle to move rightward, the puncture needle drives a bump to pass through a isolating plug, the bump enters the protective sleeve from the left end of the protective sleeve, when the outer wall of the right side of the bump contacts with the right side of the inner wall of the protective sleeve, the bump drives the protective sleeve to move rightward, and when the puncture needle is withdrawn, the needle head of the puncture needle is positioned inside the protective sleeve, so that medical staff is protected from being pricked.
However, the protective sleeve in the safe retaining needle can only protect the needle head of the puncture needle and prevent the needle head from stabbing medical staff, however, body fluid of a patient may exist on the used puncture needle body, for example, the whole puncture needle is not protected, and the body fluid on the needle body may still cause infection to the medical staff or cause pollution to the environment in the process of pulling out or in the subsequent treatment.
Disclosure of utility model
The utility model provides a safe indwelling needle, which aims to solve the technical problems that a puncture needle can be completely covered and protected, so that the body fluid on the puncture needle can be prevented from causing infection of medical staff or environmental pollution, and the needle tip of the puncture needle can be prevented from causing needle puncture.
In order to solve the technical problems, the utility model adopts the following technical scheme:
The utility model provides a safe type keep somewhere needle, includes needle file, pjncture needle, catheter holder, keeps somewhere pipe and safety seat, keep somewhere the fixed setting in catheter holder front end of pipe, needle file front end detachably is connected with catheter holder rear end, the pjncture needle is fixed to be set up in the needle file front end, and one end outwards extends and can run through catheter holder and keep somewhere the pipe, the safety seat sets up between needle file and catheter holder, and slidable cover locates on the pjncture needle, still includes the protective sheath, the protective sheath is bellows shape and cover locates on the pjncture needle, the protective sheath both ends respectively with needle file and safety seat fixed connection, during the dismantlement needle file, the safety seat slidable is to on the pjncture needle point to drive the protective sheath extension and cover the protection completely to the pjncture needle.
As a further improvement of the above technical scheme:
In at least one embodiment, the catheter seat is provided with an infusion end, the inside of the catheter seat is provided with a separation plug, the separation plug divides the inside of the catheter seat into a first cavity and a second cavity, the infusion end and the indwelling catheter are both communicated with the first cavity, and one end of the safety seat is movably inserted into the second cavity.
Still further, be provided with the through-hole that is used for supplying the pjncture needle to run through on the safety seat, be provided with the elastic lamina in the safety seat, the elastic lamina is blocked by the pjncture needle, when the safety seat slides to the pjncture needle point, the elastic lamina resets and can seal the through-hole of safety seat front end.
Compared with the prior art, the utility model at least realizes the following beneficial effects: according to the safe type indwelling needle, through the combined action of the safety seat and the protective sleeve, when the safety seat slides to the needle point of the puncture needle, the protective sleeve can be driven to stretch, so that the puncture needle is completely covered, and medical staff is prevented from being punctured by the needle and body fluid on the puncture needle is prevented from being infected or the environment is prevented from being polluted.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram showing a puncture state according to an embodiment of the present utility model;
FIG. 2 is a cross-sectional view of the embodiment of FIG. 1;
FIG. 3 is a cross-sectional view of a first embodiment of the utility model in a needle-withdrawn state;
fig. 4 is a schematic diagram showing connection between a needle holder and a safety holder according to a first embodiment of the present utility model;
FIG. 5 is a cross-sectional view of a second embodiment of the present utility model in a puncturing position;
FIG. 6 is a cross-sectional view of a second embodiment of the present utility model in a needle-withdrawn state;
FIG. 7 is a cross-sectional view of a three-piercing state according to an embodiment of the present utility model;
Fig. 8 is a cross-sectional view of a three-shot state according to an embodiment of the present utility model.
The reference numerals in the figures are: 1. a needle stand; 2. a puncture needle; 3. a catheter holder; 4. an indwelling catheter; 5. a safety seat; 6. a protective sleeve; 7. a spring; 11. a hand-held part; 12. a connection part; 13. a buckle; 31. an infusion end; 32. a spacer plug; 33. a first chamber; 34. a second chamber; 35. a connecting groove; 36. a clamping groove; 51. a through hole; 52. an elastic sheet; 53. an annular block; 121. an outer thread; 341. an annular groove; 351. an inner screw thread.
Detailed Description
The application will be described in detail hereinafter with reference to exemplary embodiments in the accompanying drawings. It should be understood, however, that this application may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the application to those skilled in the art.
In the description of the present application, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present application.
As shown in fig. 1 to 8, the safety type indwelling needle comprises a needle seat 1, a puncture needle 2, a catheter seat 3, an indwelling catheter 4, a safety seat 5 and a protective sleeve 6, wherein the indwelling catheter 4 is arranged at the front end of the catheter seat 3 and is used for being indwelled on a patient to take medicine or provide nutrition for the patient, so that vascular injury caused by multiple puncture can be avoided, pain of the patient can be relieved, and operation intensity of nurses can be reduced; the puncture needle 2 is arranged at the front end of the needle seat 1, and the front end of the needle seat 1 is detachably connected with the catheter seat 3, so that the indwelling catheter 4 can be punctured into a patient. When the needle stand 1 and the puncture needle 2 are disassembled after the puncture is completed, the puncture needle 2 is completely covered and protected by the safety stand 5 and the protective sleeve 6, so that the needle tip of the puncture needle 2 is prevented from causing needle puncture injury to medical staff, and body fluid on the needle body of the puncture needle 2 is prevented from causing infection of the medical staff or pollution to the environment.
Example 1
Referring to fig. 1 to 4, the needle holder 1 is used for fixing the puncture needle 2, a hand-held part 11 is arranged at the rear end of the needle holder 1, and medical staff can penetrate or pull out the puncture needle 2 into a blood vessel of a patient through the hand-held part 11, so that the practicability and convenience of the indwelling needle are improved. Further, the front end of the needle seat 1 is provided with a convex connecting part 12, and the connecting part 12 is provided with an outer screw thread 121.
The puncture needle 2 is arranged at the front end of the needle seat 1 and can penetrate through the catheter seat 3 and the indwelling catheter 4, the indwelling catheter 4 can be penetrated into a blood vessel of a patient through the puncture needle 2, and then the puncture needle 2 is pulled out, so that the indwelling catheter 4 is reserved in the blood vessel of the patient.
The catheter holder 3 is used for fixing the indwelling catheter 4, and the infusion end 31 is arranged on the catheter holder 3, and the infusion end 31 can be used for connecting an infusion tube to administer medicine or provide nutrition to a patient. The isolation plug 32 is arranged in the catheter seat 3, and the isolation plug 32 is made of elastic materials such as latex or rubber, so that after the puncture needle 2 is pulled out, the isolation plug 32 can automatically close a perforation formed by the puncture of the puncture needle 2 due to the elasticity of the isolation plug 32, and the leakage of liquid medicine is avoided; the isolation plug 32 divides the interior of the catheter seat 3 into a first chamber 33 and a second chamber 34, the infusion end 31 and the indwelling catheter 4 are communicated with the first chamber 33, and one end of the safety seat 5 is movably inserted into the second chamber 34.
The rear end of the catheter seat 3 is detachably connected with the front end of the needle seat 1. Specifically, in the first embodiment, the front end of the needle holder 1 is provided with a protruding connection portion 12, the connection portion 12 is provided with an external screw thread 121, the rear end of the catheter holder 3 is provided with a connection groove 35 matched with the connection portion 12, a corresponding internal screw thread 351 is arranged in the connection groove 35, and the needle holder 1 and the catheter holder 3 are detachably connected through the external screw thread 121 and the internal screw thread 351 in a threaded connection manner.
The indwelling catheter 4 is fixedly arranged at the front end of the catheter seat 3, the indwelling catheter 4 is a hose, the indwelling catheter 4 can be reserved in a patient blood vessel after the puncture needle 2 is penetrated into the patient blood vessel, and the indwelling catheter 4 can provide medicine treatment or nutrition for the patient for a plurality of times, so that pain of the patient caused by the plurality of times of puncture is avoided, and the workload of medical staff is increased.
The safety seat 5 is arranged between the needle seat 1 and the catheter seat 3, and is slidably sleeved on the puncture needle 2, a through hole 51 for the puncture needle 2 to penetrate is formed in the safety seat 5, an elastic sheet 52 is arranged in the safety seat 5, the elastic sheet 52 is blocked by the puncture needle 2, and when the safety seat 5 slides to the needle point of the puncture needle 2, the elastic sheet 52 resets to seal the through hole 51 at the front end of the safety seat 5.
When the puncture needle 2 is pulled out, the safety seat 5 slides to the needle point of the puncture needle 2, the elastic piece 52 loses the blocking of the puncture needle 2, and then the through hole 51 at the front end of the safety seat 5 is closed by resetting, so that the needle point of the puncture needle 2 can be completely contained in the safety seat 5, and meanwhile, the needle point of the puncture needle 2 is prevented from extending out of the safety seat 5, and the medical staff is prevented from being injured by the needle.
An annular block 53 is arranged at one end of the safety seat 5, an annular groove 341 is arranged in the second chamber 34, and the annular block 53 is clamped in the annular groove 341.
The protective sleeve 6 is bellows-shaped and sleeved on the puncture needle 2, two ends of the protective sleeve 6 are fixedly connected with the needle seat 1 and the safety seat 5 respectively, and when the needle seat 1 is disassembled, the safety seat 5 can slide onto the needle tip of the puncture needle 2 and drives the protective sleeve 6 to stretch so as to cover and protect the puncture needle 2 completely.
The protective sheath 6 both ends are connected with needle file 1 and safety seat 5 respectively, and safety seat 5 cover slidable locates on pjncture needle 2, and when safety seat 5 slides to pjncture needle 2 needle point department and covers the protection to pjncture needle 2 needle point, can drive protective sheath 6 extension and cover the protection to pjncture needle 2's needle body, and then cover the protection completely to pjncture needle 2, prevent pjncture needle 2's needle point from stabbing medical personnel, also can prevent that the body fluid on pjncture needle 2 from causing the infection or causing the pollution to the environment to medical personnel.
When in use, after the indwelling catheter 4 is punctured into a blood vessel of a patient through the puncture needle 2, the needle seat 1 is rotated to detach the needle seat 1 from the catheter seat 3, the needle seat 1 is moved to the rear end, and the needle seat 1 can drive the puncture needle 2 to be pulled out to the rear end; at this time, because the annular block 53 disposed at one end of the safety seat 5 is clamped in the annular groove 341 in the second chamber 34, the safety seat 5 cannot move along with the needle seat 1 towards the lower end, and the safety seat 5 and the puncture needle 2 slide relatively, so that the protective sleeve 6 is stretched, when the puncture needle 2 is pulled out until the needle tip is located in the safety seat 5, the protective sleeve 6 stretches to the longest state, and the puncture needle 2 is pulled out continuously, and because the protective sleeve 6 stretches to the longest state, the safety seat 5 can be detached from the catheter seat 3 together with the safety seat 5 due to the pulling of the protective sleeve 6. Therefore, when the puncture needle 2 is disassembled, the puncture needle 2 can be completely covered and protected through the safety seat 5 and the protective sleeve 6, so that the needle tip of the puncture needle 2 is prevented from stabbing medical staff, and body fluid on the puncture needle 2 can be prevented from infecting the medical staff or polluting the environment.
Example two
Referring to fig. 5 and 6, unlike the first embodiment, a safety indwelling needle in the second embodiment further includes a spring 7, the spring 7 is sleeved on the puncture needle 2, and two ends of the spring 7 are respectively abutted against one ends of the needle seat 1 and the safety seat 5.
In the first embodiment, the annular block 53 is disposed at one end of the safety seat 5, the annular groove 341 is disposed in the second chamber 34, and the annular block 53 is clamped in the annular groove 341, so that the safety seat 5 and the puncture needle 2 slide relatively due to the clamping of the annular block 53 and the annular groove 341 during the process of pulling out the puncture needle 2, and the protective sleeve 6 is stretched.
However, the safety seat 5 may not move to the tip of the puncture needle 2 due to poor clamping effect of the annular block 53 and the annular groove 341, and the safety seat 5 may be separated from the catheter seat 3, resulting in incomplete coverage of the puncture needle 2; secondly, the clamping effect of the annular block 53 and the annular groove 341 may be too firm, which may cause difficulty in disassembly when the puncture needle 2 is disassembled; in the second embodiment, the safety seat 5 slides on the puncture needle 2 by the pretightening force of the spring 7, two ends of the spring 7 are respectively abutted against the needle seat 1 and the mounting seat, when the needle seat 1 is disassembled and moves downwards, the safety seat 5 can slide to the needle point of the puncture needle 2 due to the pretightening force of the spring 7, and the protective sleeve 6 is driven to stretch to completely cover the puncture needle 2, so that the possible problem in the first embodiment is avoided.
Example III
Referring to fig. 7 and 8, the rear end of the catheter hub 3 is detachably connected with the front end of the needle hub 1. Unlike the first and second embodiments, in the third embodiment, the front end of the needle holder 1 is provided with the buckle 13, the buckle 13 is hemispherical, the rear end of the catheter holder 3 is provided with the corresponding slot 36, and the needle holder 1 and the catheter holder 3 are clamped in the slot 36 by the buckle 13 to realize detachable connection.
The catheter seat 3 and the needle seat 1 in the third embodiment are detachably connected with the clamping groove 36 through the clamping buckle 13, so that the threaded connection in the above embodiment is not required to rotate for a plurality of circles, the disassembly is more convenient, and the damage to a patient possibly caused by rotating the puncture needle 2 for a plurality of circles can also be prevented.
It should be understood that all of the above embodiments are exemplary and not limiting, and that various modifications or variations to the specific embodiments described above will be within the scope of the utility model as contemplated by those skilled in the art.
Claims (6)
1. The utility model provides a safe type is kept somewhere needle, includes needle file (1), pjncture needle (2), catheter holder (3), is kept somewhere catheter (4) and safety seat (5), keep somewhere catheter (4) fixed setting in catheter holder (3) front end, needle file (1) front end detachably is connected with catheter holder (3) rear end, pjncture needle (2) are fixed to be set up in needle file (1) front end, and one end outwards extends and can run through catheter holder (3) and keep somewhere catheter (4), safety seat (5) set up between needle file (1) and catheter holder (3), and slidable cover locates on pjncture needle (2), its characterized in that: still include protective sheath (6), protective sheath (6) are bellows-type and cover and locate on pjncture needle (2), protective sheath (6) both ends respectively with needle file (1) and safety seat (5) fixed connection, during dismantlement needle file (1), safety seat (5) slidable is to on pjncture needle (2) needle point to drive protective sheath (6) tensile to cover the protection completely to pjncture needle (2), be provided with infusion end (31) on catheter seat (3), catheter seat (3) inside is provided with isolator (32), isolator (32) are first cavity (33) and second cavity (34) with catheter seat (3) internal partition, infusion end (31) and indwelling catheter (4) all communicate with first cavity (33), safety seat (5) one end is movably inserted in second cavity (34), be provided with on safety seat (5) and be used for supplying pjncture needle (2) to cover the protection completely, be provided with in safety seat (5) elastic disc (52), elastic disc (52) are blocked when pjncture needle (2) is reset to safety seat (52) needle point (52).
2. The safety indwelling needle according to claim 1, wherein: an annular block (53) is arranged at one end of the safety seat (5), an annular groove (341) is formed in the second cavity (34), and the annular block (53) is clamped in the annular groove (341).
3. The safety indwelling needle according to claim 1, wherein: the needle also comprises a spring (7), wherein the spring (7) is sleeved on the puncture needle (2), and two ends of the spring are respectively abutted with one ends of the needle seat (1) and the safety seat (5).
4. The safety indwelling needle according to claim 1, wherein: the needle seat (1) is provided with a hand-held part (11).
5. A safety indwelling needle according to claim 2 or claim 3, in which: the novel catheter is characterized in that the front end of the needle seat (1) is provided with a protruding connecting portion (12), an outer screw thread (121) is arranged on the connecting portion (12), a connecting groove (35) matched with the connecting portion (12) is formed in the rear end of the catheter seat (3), a corresponding inner screw thread (351) is arranged in the connecting groove (35), and the needle seat (1) and the catheter seat (3) are detachably connected through the outer screw thread (121) and the inner screw thread (351) in a threaded mode.
6. A safety indwelling needle according to claim 2 or claim 3, in which: the front end of the needle seat (1) is provided with a buckle (13), the rear end of the catheter seat (3) is provided with a corresponding clamping groove (36), and the needle seat (1) and the catheter seat (3) are connected in the clamping groove (36) in a clamping way through the buckle (13) in a clamping way to realize detachable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420385670.9U CN221771101U (en) | 2024-02-29 | 2024-02-29 | A safe indwelling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420385670.9U CN221771101U (en) | 2024-02-29 | 2024-02-29 | A safe indwelling needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221771101U true CN221771101U (en) | 2024-09-27 |
Family
ID=92836207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420385670.9U Active CN221771101U (en) | 2024-02-29 | 2024-02-29 | A safe indwelling needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221771101U (en) |
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2024
- 2024-02-29 CN CN202420385670.9U patent/CN221771101U/en active Active
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