CN117323498A - Embedded protection type indwelling needle structure - Google Patents
Embedded protection type indwelling needle structure Download PDFInfo
- Publication number
- CN117323498A CN117323498A CN202311548733.4A CN202311548733A CN117323498A CN 117323498 A CN117323498 A CN 117323498A CN 202311548733 A CN202311548733 A CN 202311548733A CN 117323498 A CN117323498 A CN 117323498A
- Authority
- CN
- China
- Prior art keywords
- needle
- seat body
- embedded protection
- seat
- head
- 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.)
- Withdrawn
Links
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000013016 damping Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims 7
- 210000004204 blood vessel Anatomy 0.000 description 6
- 239000007788 liquid Substances 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- HTTJABKRGRZYRN-UHFFFAOYSA-N Heparin Chemical compound OC1C(NC(=O)C)C(O)OC(COS(O)(=O)=O)C1OC1C(OS(O)(=O)=O)C(O)C(OC2C(C(OS(O)(=O)=O)C(OC3C(C(O)C(O)C(O3)C(O)=O)OS(O)(=O)=O)C(CO)O2)NS(O)(=O)=O)C(C(O)=O)O1 HTTJABKRGRZYRN-UHFFFAOYSA-N 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 229960002897 heparin Drugs 0.000 description 1
- 229920000669 heparin Polymers 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000000474 nursing effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000284 resting effect Effects 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
- A61M2005/1587—Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body suitable for being connected to an infusion line after insertion into a patient
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 relates to the technical field of indwelling needles. Aims to provide an embedded protection type indwelling needle structure, which comprises a needle seat part, a needle core part, an extension tube, a flow stopping clamp and an external joint; the needle seat part comprises a seat body and a soft catheter arranged at the head end of the seat body, a side joint is arranged at one side of the seat body, and the seat body is communicated with the outer joint through the side joint and the extension tube; the isolation plug is fixedly arranged at the position, located behind the side connector, in the base body, an embedded protection head is arranged behind the isolation plug, and one end of the embedded protection head, facing the isolation plug, is inwards concave to form a low-pressure accommodating cavity; the embedded protection head and the seat body form sliding fit, and are pressed into the seat body under external pressure to form locking. The invention can effectively protect the operating hands of nurses and reduce the needling risk caused by misoperation in the needle withdrawing process.
Description
Technical Field
The invention relates to the technical field of indwelling needles, in particular to an embedded protection type indwelling needle structure.
Background
The core components of the venous indwelling needle, also called venous trocar, comprise a soft catheter which can be indwelled in a blood vessel and a hard puncture needle core. When the catheter is used, the catheter and the needle core are punctured into a blood vessel, after blood returns, the catheter is pushed forward for 0.2cm, after the catheter completely enters the blood vessel, the needle core is withdrawn, and only the soft catheter is reserved in the blood vessel, so that the infusion of subsequent liquid is facilitated, and the reserved needle with good preservation can be reserved in a patient for 5-7 days. The medicine can effectively reduce the pain of patients caused by repeated venipuncture, is convenient for clinical medication, can be used for rescuing emergency patients and critical patients, reduces the work load of nurses, and is widely applied clinically. However, the indwelling needle always belongs to the puncture tool, and the catheter seat body needs to be stabilized and the needle is withdrawn in the operation process, so that the puncture risk of the puncture needle core is still high, and the puncture and infection risks of nursing are increased.
Disclosure of Invention
The invention aims to provide an embedded protection type indwelling needle structure capable of forming anti-needling protection for medical care.
In order to achieve the aim of the invention, the technical scheme adopted by the invention is an embedded protection type indwelling needle structure, which comprises a needle seat part, a needle core part, an extension tube, a flow stopping clamp and an outer joint;
the needle seat part comprises a seat body and a soft catheter arranged at the head end of the seat body, a side joint is arranged at one side of the seat body, and the seat body is communicated with the outer joint through the side joint and the extension tube; the isolation plug is fixedly arranged at the position, located behind the side connector, in the base body, an embedded protection head is arranged behind the isolation plug, and one end of the embedded protection head, facing the isolation plug, is inwards concave to form a low-pressure accommodating cavity; the embedded protection head and the seat body form sliding fit and are pressed into the seat body under external pressure to form locking;
the needle core comprises a core seat which is arranged in the tail end of the seat body and forms sliding fit with the seat body, the head end of the core seat is provided with the needle body, and one side of the core seat is provided with a needle handle; the needle body of the needle core part sequentially passes through the central hole of the embedded protection head and the isolation plug and extends to penetrate out of the soft catheter;
when the head of the needle body is withdrawn into the low-pressure accommodating cavity, the communication between the low-pressure accommodating cavity and the outside atmosphere can be triggered, so that the unlocking of the embedded protection head is formed; and the embedded protection head can be withdrawn from the seat body together with the needle body.
Preferably, a first side hole extending along the transverse direction is formed in the side wall of the central hole of the embedded protection head, and a second side hole is formed in the side wall of the base body at a position corresponding to the first side hole; the side wall of the needle body, which is close to the head part, is provided with a third side hole.
Preferably, a damping rubber sleeve is arranged in the central hole of the embedded protection head, and the damping rubber sleeve and the needle body form sliding fit with damping.
Preferably, a locking hole is further formed in the side wall of the central hole of the embedded protection head, a locking ball and an elastic piece are arranged in the locking hole, and the locking ball is propped against the needle body through the elastic piece; the side wall of the needle body is also provided with a ball groove which is matched with the locking ball.
Preferably, a section of the seat body corresponding to the isolation plug is provided with a stage, and the isolation plug is propped against the stage.
Preferably, the outer joint is a Y-shaped outer joint.
Preferably, the needle handle is sheet-shaped, and the surface of the needle handle is provided with anti-skid protruding points.
Preferably, the embedded protection head and the seat body form a package under a low-pressure environment so as to form a low-pressure state of the low-pressure accommodating cavity.
The beneficial effects of the invention are concentrated in that: can effectually protect nurse's operation panel, reduce the acupuncture risk that leads to because misoperation in the needle withdrawal process. Specifically, the invention is similar to the traditional indwelling needle in use, after the puncture is completed, the seat body is pressed, and the needle body is withdrawn from the soft catheter by the needle handle, so that the soft catheter is reserved in the blood vessel of the patient; the front-stage travel of the needle withdrawal is that the core seat and the needle body withdraw, and at the moment, the embedded protection head is pressed in the seat under the action of external pressure to form locking. When the head of the needle body enters the low-pressure accommodating cavity, namely the head of the needle body is completely accommodated in the embedded protection head, entering the end section of the needle withdrawing stroke; at this time, the low-pressure accommodating cavity of the embedded protection head is communicated with the outside atmosphere, so that the pressure at the two ends of the embedded protection head is balanced and can be withdrawn from the seat body along with the needle body without being locked. After the needle body is withdrawn, the head (needle head) of the needle body is protected by the embedded protection head, so that the risk of needling of medical staff can be greatly reduced. The invention has simple and reliable structure and convenient processing, and can be widely popularized in clinic.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the structure of the needle hub and the needle core;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a schematic view of the structure of FIG. 2 in use;
FIG. 6 is an enlarged view of portion C of FIG. 5;
fig. 7 is a schematic view of another use state of the structure shown in fig. 2.
Detailed Description
As shown in fig. 1 to 7, an in-line protection type indwelling needle structure is similar to a conventional indwelling needle in that it also includes a needle seat 4, a needle core 5, an extension tube 1, a stopper clip 2, and an outer hub 3. The needle seat part 4 is used as an indwelling needle indwelling body, the needle core part 5 is used as an indwelling needle puncture body, the outer joint 3 is used for externally connecting injection devices such as a syringe, an infusion set and the like, and the outer joint 3 is a Y-shaped outer joint 3 which comprises a heparin cap seal and a conical tube seal. The extension tube 1 adopts a flexible tube body for connecting the outer joint 3 and the needle seat part 4.
As shown in fig. 2 and 5, the hub portion 4 includes a hub 6 and a flexible conduit 7 disposed at a head end of the hub 6, where the head and tail are proximal to the liquid and distal from the head in terms of liquid flow. As shown in fig. 2, top is the head and bottom is the tail. A side joint 8 is arranged on one side of the base body 6, and the base body 6 is communicated with the outer joint 3 through the side joint 8 and the extension pipe 1. The main difference between the present invention and the conventional indwelling needle is that, as shown in fig. 2 and 4, a spacer plug 9 is fixedly disposed at a position behind the side connector 8 in the seat 6, and an embedded protection head 10 is disposed behind the spacer plug 9, which functions as a main body of the anti-needling protection. As shown in fig. 4, the in-line protection head 10 is recessed toward one end of the isolation plug 9 to form a low-pressure housing chamber 11. The embedded protection head 10 and the seat body 6 form a sliding fit, and are pressed into the seat body 6 under external pressure to form locking.
The low-pressure accommodating cavity 11, that is, a cavity whose internal pressure is far lower than the external standard air pressure, may be formed by pumping air down after the encapsulation is completed, but this method has high cost and complex process. Preferably, the in-line protection head 10 forms a package with the base 6 in a low pressure environment to form a low pressure state of the low pressure housing chamber 11. This way the operation is simpler.
As shown in fig. 2 and 5, the needle core 5 of the present invention includes a core holder 12 disposed in the tail end of the holder 6 and slidably engaged with the holder 6, a needle body 13 is disposed at the head end of the core holder 12, and a needle handle 14 is disposed at one side of the core holder 12. The needle body 13 of the needle core 5 sequentially passes through the central hole of the embedded protection head 10 and the isolation plug 9 and extends to penetrate out of the flexible catheter 7 to form a clearance.
In the working process of the invention, when the head of the needle body 13 is withdrawn into the low-pressure accommodating cavity 11, the communication between the low-pressure accommodating cavity 11 and the external atmosphere can be triggered, so as to unlock the embedded protection head 10. And allows in-line protection head 10 to exit housing 6 along with needle 13. To achieve the above functional linkage, in a simplest and reliable manner, as shown in fig. 2 to 4, a first side hole 15 extending in a transverse direction may be further provided on a side wall of the central hole of the in-line protection head 10, and a second side hole 16 is provided on a side wall of the base 6 corresponding to the first side hole 15. The side wall of the needle body 13 close to the head is provided with a third side hole 17.
The invention is similar to the traditional indwelling needle in use, after the puncture is completed, the seat body 6 is pressed, and the needle body 13 is withdrawn from the soft catheter 7 by the needle handle 14, so that the soft catheter 7 is reserved in the blood vessel of the patient; the front-stage travel of the needle withdrawal is that the core print seat 12 and the needle body 13 withdraw, and at the moment, the embedded protection head 10 is pressed into the seat body 6 under the action of external pressure to form locking. When the head of the needle body 13 enters the low-pressure accommodating cavity, that is, when the head of the needle body 13 is completely accommodated in the embedded protection head 10, the end of the needle withdrawing stroke is entered in the state shown in fig. 5 and 6; at this time, the low pressure accommodating cavity 11 of the embedded protection head 10 is in communication with the outside air, so that the two ends of the embedded protection head 10 are pressure-balanced and no longer locked, and can be withdrawn from the seat body along with the needle body, and the withdrawn state is shown in fig. 7. After the needle body 13 is withdrawn, the head (needle head) is protected by the embedded protection head 10, so that the risk of needling of medical staff can be greatly reduced. The invention has simple and reliable structure and convenient processing, and can be widely popularized in clinic.
Generally, a certain friction resistance exists between the central hole of the embedded protection head 10 and the needle body 13, and the embedded protection head 10 is driven to withdraw by the friction resistance. Of course, in order to ensure that the embedded protection head 10 can be withdrawn very safely, as shown in fig. 4, a damping rubber sleeve 18 may be disposed in the central hole of the embedded protection head 10, and a sliding fit with damping may be formed between the damping rubber sleeve 18 and the needle body 13. In addition, a locking hole 19 may be further provided on the side wall of the central hole of the in-line protection head 10, a locking ball 20 and an elastic member 21 are provided in the locking hole 19, and the locking ball 20 abuts against the needle body 13 through the elastic member 21. The side wall of the needle body 13 is also provided with a ball groove 22, and the ball groove 22 is matched with the locking ball 20. The invention has simple and reliable structure and convenient processing, can be widely popularized in clinic, and can protect the operating hands of nurses.
In order to improve the stability of the plug 9, a section of the seat 6 corresponding to the plug 9 is provided with a stepped section 23, the plug 9 resting on the abutment 23. In order to ensure the convenience of the operation of the needle handle 14, the needle handle 14 is sheet-shaped, and the surface of the needle handle 14 is provided with anti-skid protruding points.
Claims (8)
1. An embedded protection type indwelling needle structure comprises a needle seat part (4), a needle core part (5), an extension tube (1), a flow stopping clamp (2) and an outer joint (3);
the method is characterized in that: the needle seat part (4) comprises a seat body (6) and a soft catheter (7) arranged at the head end of the seat body (6), a side joint (8) is arranged at one side of the seat body (6), and the seat body (6) is communicated with the outer joint (3) through the side joint (8) and the extension tube (1); the isolation plug (9) is fixedly arranged at the position, located behind the side joint (8), in the base body (6), an embedded protection head (10) is arranged behind the isolation plug (9), and one end, facing the isolation plug (9), of the embedded protection head (10) is inwards recessed to form a low-pressure accommodating cavity (11); the embedded protection head (10) and the seat body (6) form sliding fit, and are pressed into the seat body (6) under external pressure to form locking;
the needle core part (5) comprises a core seat (12) which is arranged in the tail end of the seat body (6) and is in sliding fit with the seat body (6), a needle body (13) is arranged at the head end of the core seat (12), and a needle handle (14) is arranged at one side of the core seat (12); the needle body (13) of the needle core part (5) sequentially passes through the central hole of the embedded protection head (10) and the isolation plug (9) and extends to penetrate out of the soft catheter (7);
when the head of the needle body (13) is withdrawn into the low-pressure accommodating cavity (11), the communication between the low-pressure accommodating cavity (11) and the external atmosphere can be triggered to unlock the embedded protection head (10); and the embedded protection head (10) can withdraw from the seat body (6) along with the needle body (13).
2. The in-line protective indwelling needle structure according to claim 1, wherein: a first side hole (15) extending transversely is formed in the side wall of the central hole of the embedded protection head (10), and a second side hole (16) is formed in the side wall of the seat body (6) at a position corresponding to the first side hole (15); the side wall of the needle body (13) close to the head is provided with a third side hole (17).
3. The in-line protective indwelling needle structure according to claim 2, wherein: a damping rubber sleeve (18) is arranged in a central hole of the embedded protection head (10), and the damping rubber sleeve (18) and the needle body (13) form sliding fit with damping.
4. The in-line protective indwelling needle structure according to claim 2 or 3, wherein: the side wall of the central hole of the embedded protection head (10) is also provided with a locking hole (19), a locking ball (20) and an elastic piece (21) are arranged in the locking hole (19), and the locking ball (20) is propped against the needle body (13) through the elastic piece (21); the side wall of the needle body (13) is also provided with a ball groove (22), and the ball groove (22) is matched with the locking ball (20).
5. The in-line protective indwelling needle structure according to claim 1, wherein: a step section (23) is arranged on a section of the base body (6) corresponding to the isolation plug (9), and the isolation plug (9) is propped against the stage section (23).
6. The in-line protective indwelling needle structure according to claim 1, wherein: the outer joint (3) is a Y-shaped outer joint (3).
7. The in-line protective indwelling needle structure according to claim 1, wherein: the needle handle (14) is sheet-shaped, and anti-skid salient points are arranged on the surface of the needle handle (14).
8. The in-line protective indwelling needle structure according to claim 1, wherein: the embedded protection head (10) and the seat body (6) form a package under a low-pressure environment so as to form a low-pressure state of the low-pressure accommodating cavity (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311548733.4A CN117323498A (en) | 2023-11-20 | 2023-11-20 | Embedded protection type indwelling needle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311548733.4A CN117323498A (en) | 2023-11-20 | 2023-11-20 | Embedded protection type indwelling needle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117323498A true CN117323498A (en) | 2024-01-02 |
Family
ID=89295752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311548733.4A Withdrawn CN117323498A (en) | 2023-11-20 | 2023-11-20 | Embedded protection type indwelling needle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117323498A (en) |
-
2023
- 2023-11-20 CN CN202311548733.4A patent/CN117323498A/en not_active Withdrawn
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20240102 |
|
| WW01 | Invention patent application withdrawn after publication |