CN212235496U - Prevent acupuncture subassembly - Google Patents
Prevent acupuncture subassembly Download PDFInfo
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- CN212235496U CN212235496U CN202021563430.1U CN202021563430U CN212235496U CN 212235496 U CN212235496 U CN 212235496U CN 202021563430 U CN202021563430 U CN 202021563430U CN 212235496 U CN212235496 U CN 212235496U
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Abstract
The utility model provides a prevent acupuncture subassembly, including needle point protective sheath with prevent back needle structure, the needle point protective sheath is equipped with the puncture passageway that supplies the needle tubing pipe to cross, has laid in puncture passageway department and has prevented back needle structure and close in order to realize the intercommunication of puncture passageway. The utility model has the advantages that: the utility model discloses can reduce and puncture the number of times repeatedly, effectively prevent that the user from contacting the needle point after catheter insertion patient blood vessel and needle tubing take out the catheter holder, prevent that the user from contacting the residue on the needle point, make things convenient for medical personnel to use.
Description
Technical Field
The utility model relates to a needle field is kept somewhere to the vein, and more specifically says and relates to a prevent acupuncture subassembly.
Background
In the modern society, infusion treatment is a common means of disease treatment, and ordinary infusion needle needs to carry out a puncture to the patient when infusing every time, to the patient that needs to carry out infusion treatment for a long time, this has increased medical personnel's work load undoubtedly, improves medical personnel and has stabbed the risk of infecting, and the painful degree of patient has also been aggravated in the puncture repeatedly simultaneously. For the open type indwelling needle, whether the indwelling needle has penetrated into the blood vessel of a patient is judged by observing whether the blood return cavity in the catheter seat has the blood return or not, but because the needle head of the indwelling needle is far away from the blood return cavity, the time for the blood return to flow from the needle head of the indwelling needle to the blood return cavity is far more than that for medical staff to penetrate into the blood vessel, the result often causes the penetration of the back wall of the blood vessel, the puncture needs to be carried out again, the unnecessary pain is brought to the patient, even if the blood vessel of the patient is penetrated, the medical staff is difficult to make accurate judgment rapidly, and the working efficiency of the medical staff is reduced. The sleeve material of the indwelling needle product on the market at present is FEP mostly, and the patient still has higher probability to suffer from phlebitis in the long-time indwelling use process, so that the pain degree of the patient and the use risk of the indwelling needle are increased.
In recent years, there has been considerable interest in the blood that medical personnel may be exposed to a patient, and it has been recognized that the "blood-exposed needle tip" must be disposed of immediately. This concern is growing because diseases that are not currently treatable, such as Acquired Immune Deficiency Syndrome (AIDS), are emerging and can be transmitted from one infected person to another by exchange of body fluids. Therefore, contact with the body fluids of aids infected persons must be avoided. As mentioned above, if a needle cannula has been used to place an indwelling cannula into a blood vessel of an AIDS infected person, the needle cannula is a vehicle for the delivery of the disease. Such as emergency situations or situations where a contaminated steel needle pokes medical care personnel, due to lack of attention or negligence.
The prior art/product and the defects are as follows:
a) currently, the mainstream products on the market do not have a safety device for preventing the puncture of the needle tip or only have a safety clip for protecting the user, but do not have a cover or a cover surrounding the safety clip, and although the spring clip can prevent the user from contacting the needle tip of the needle tube, the spring clip can not prevent the user from contacting residual blood on the needle tip, especially when a blood return groove is arranged on the needle tube, so the safety device is still unsafe.
b) Most of the existing mature products of the indwelling needle with the outer cover need additional operation to enable the safety device to function, so that the workload and the operation difficulty of medical staff are increased; in addition, in the process of operating and unlocking the safety device, the indwelling cannula which has been successfully punctured is easy to slide out of the blood vessel, so that puncture failure is caused, and puncture needs to be carried out again, thereby causing pain to patients without fear.
c) The main form of the existing indwelling needle product with a mature safety device capable of being automatically activated (i.e. the safety device can automatically play a role while the needle tube is withdrawn) is that the outer cover of the safety device needs to be hung on the catheter seat of the indwelling needle under the action of the safety clip, the safety clip is directly acted on the outer wall of the needle tube by the extrusion force of the catheter seat, and the final result is: in the process of operating and unlocking the safety device, the indwelling cannula which has been successfully punctured is easy to slide out of the blood vessel, so that puncture failure is caused, and puncture needs to be carried out again, thereby causing unnecessary pain to patients.
In addition, the needle-prick prevention type indwelling needle on the market at present is relatively long in size along the needle tube direction due to the fact that a needle-prick prevention safety device is additionally arranged between the needle tube assembly and the catheter seat assembly, and the whole shaking range of the needle tube is large when the needle handle is held by hand to perform puncture due to the reason of fit clearance among the assemblies, so that puncture force and puncture angle are not easy to control by medical workers, and the needle is inconvenient to use by the medical workers.
Disclosure of Invention
The utility model overcomes not enough among the prior art provides a prevent acupuncture subassembly.
The purpose of the utility model is realized by the following technical scheme.
The utility model provides a prevent acupuncture subassembly, includes needle point protective sheath and prevents back needle structure, the needle point protective sheath is equipped with the puncture passageway that supplies the needle tubing to pass the puncture passageway department is laid prevent back needle structure in order to realize the intercommunication/close of puncture passageway.
Preferably, the needle tip protective sleeve is provided with a cavity, a needle tube penetrating end and a needle tube penetrating end, the cavity and the needle tube penetrating end are sequentially connected, a hollow inserting table is arranged in the cavity, and the inserting table is communicated with the needle tube penetrating end to form a channel for inserting the catheter seat.
In any of the above solutions, preferably, a boss opening is provided at one side of the insertion stage, and the boss opening is used for the boss of the catheter hub to pass through.
In any of the above schemes, preferably, a bayonet is provided at the needle tube penetrating end, and the bayonet is used for a clamping block on the catheter holder to be clamped in.
In any of the above schemes, preferably, the inner wall of the needle tip penetrating end is provided with a longitudinal rib.
In any of the above schemes, preferably, the needle return prevention structure comprises a blocking piece and a rebounding device, the blocking piece is arranged in a groove formed in the penetrating end of the needle tube, and the rebounding device is arranged in the cavity of the needle tip protection sleeve.
In any of the above schemes, preferably, the baffle plate is provided with a round hole, the round hole is used for the needle tube to penetrate, the diameter of the round hole is smaller than the maximum width of the flat structure arranged on the needle tube, so that the needle tube is limited when withdrawing the needle.
In any of the above schemes, preferably, one end of the resilient means is connected to a connection port formed at an upper portion of the cavity, and the other end of the resilient means is connected to the boss.
It is preferred in any one of the above schemes that resilient means includes stiff end, kink, barrier plate and free end, the stiff end the kink the barrier plate with the free end certainly the needle tubing is worn the end to the direction that the needle tubing was worn out the end is arranged in proper order and is connected the setting, be equipped with the opening on the kink, the opening supplies the needle tubing passes, on the stiff end through articulate tough mouthful with the connector links to each other, the barrier plate supports the surface of needle tubing, the free end is fixed through the couple on the boss of pipe seat.
In any of the above aspects, preferably, the resilient means is a spring plate having elasticity
The utility model has the advantages that:
the anti-acupuncture component can not only prevent a user from contacting with a needle point after a catheter is inserted into a blood vessel of a patient and a needle tube is drawn out of a catheter seat, but also prevent the user from contacting with residues on the needle point after the needle tube is withdrawn;
the needle-prick prevention assembly in the application can be automatically activated, namely, an operator only needs to draw out the needle tube, and when the needle tip is separated from the catheter seat, the safety device can be automatically activated to sleeve the needle tip without additional operation;
the inner side wall of the needle tip protective sleeve is provided with a rib structure along the longitudinal direction, so that the fit clearance is reduced, and the integral shaking amplitude of the needle tube when an operator holds the needle handle for puncture is reduced;
the multi-bending structure of the elastic spring piece can reduce the pressure of the spring piece on the needle tube, reduce the bending risk of the steel needle, reduce the friction force during withdrawing the needle and enable medical personnel to pull out the needle more smoothly;
the utility model discloses can reduce and puncture the number of times repeatedly, effectively prevent that the user from contacting the needle point after catheter insertion patient blood vessel and needle tubing take out the catheter holder, prevent that the user from contacting the residue on the needle point, make things convenient for medical personnel to use.
Drawings
FIG. 1 is an exploded view of the needle handle assembly, anti-needle stick assembly, catheter hub connection;
FIG. 2 is a schematic view of a connection structure of a needle tip protective sheath and a catheter hub;
FIG. 3 is an enlarged view of the open slot and flat structure of the needle cannula;
FIG. 4 is a schematic view of a needle tip protective sheath;
FIG. 5 is a schematic view of the structure of the rebounding apparatus;
FIG. 6 is a schematic view of the structure of the baffle plate;
FIG. 7 is a schematic view of the catheter hub;
FIG. 8 is a schematic view of the configuration of the boss of the catheter hub coupled to the latch of the recoil assembly;
FIG. 9 is a schematic view of the structure of the needle tip shield inside the needle cannula;
FIG. 10 is a schematic view of the interior of the needle tip shield during needle retraction;
FIG. 11 is a schematic sectional view taken along line C-C';
FIG. 12 is a schematic view of the needle cannula extending out of the catheter hub cannula;
in the figure:
1. a needle handle assembly; 2. a needle tube; 3. a baffle plate; 4. a rebounding device; 5. a needle tip protective sleeve; 6. a catheter hub;
7. a cavity; 8. a groove; 9. the needle tube penetrates into the end; 10. a needle tube piercing end; 11. an insertion station; 12. a bayonet;
13. a clamping block; 14. an open slot; 15. a flat structure; 16. a connecting port; 17. longitudinal ribs; 18. a fixed end;
19. an opening; 20. a blocking plate; 21. a free end; 22. hanging a tough joint; 23. hooking; 24. a boss;
25. a circular hole; 26. a puncture channel; 27. a bending section; 28. a needle tip; 29. a sleeve; 30. a gap.
Detailed Description
The technical solution of the present invention is further explained by the following specific examples.
As shown in fig. 1 and 11, the needle-prick prevention assembly includes a needle-point protection cover 5 and a needle-prick prevention structure, wherein the needle-point protection cover 5 is provided with a prick channel for the needle tube 2 to pass through, and the needle-prick prevention structure is disposed at the prick channel 26 to realize communication/closing of the prick channel 26.
As shown in fig. 4, the needle tip protecting cover 5 has a cavity 7, a needle tube penetrating end 9 and a needle tube penetrating end 10, the needle tube penetrating end 9, the cavity 7 and the needle tube penetrating end 10 are sequentially arranged and connected, a hollow inserting table 11 is arranged in the cavity 7, and the inserting table 11 is communicated with the needle tube penetrating end 10 to form a channel for inserting the catheter hub 6;
as shown in fig. 7, a boss 24 is provided on the catheter hub 6, and a boss opening is provided at one side of the insertion stage 11, through which the boss 24 passes;
as shown in fig. 2, a bayonet 12 is arranged on the needle tube penetrating end 10, and a fixture block 13 on the catheter holder 6 is clamped into the bayonet 12; preferably, the two clamping blocks 13 are symmetrically arranged on two sides of the outer wall of the catheter base 6;
as shown in fig. 4, a longitudinal rib 17 is arranged on the inner wall of the needle tip penetrating end 9, the longitudinal rib 17 is located at the joint of the catheter base 6 and the needle tip protective sleeve 5, the longitudinal rib 17 on the inner wall of the needle tip protective sleeve 5 is not provided with a draft angle, draft angles are arranged on other surfaces except the longitudinal rib 17, the longitudinal rib 17 is used for reducing the fit clearance between the inner wall of the needle tip protective sleeve 5 and the outer wall of the catheter base 6, the shaking of all parts in the handheld operation process is reduced, and finally, the smooth demolding of plastic parts is ensured as far as possible while the assembly clearance is ensured; meanwhile, the inner side wall of the needle handle component 1 is also provided with rib structures distributed along the longitudinal direction.
The anti-back-stitching structure comprises a separation blade 3 and a rebound device 4, the separation blade 3 is arranged in a groove 8 formed in a needle tube penetrating end 9, and the rebound device 4 is arranged in a cavity 7.
One end of rebound device 4 is connected with a connecting port 16 formed at the top of cavity 7, and the other end of rebound device 4 is connected with boss 24.
The baffle 3 shown in fig. 6 is provided with a circular hole 25, and the circular hole 25 is used for the needle tube 2 to penetrate.
As shown in fig. 3 and 12, the front end of the needle tube 2 has a sharp needle point 28 for performing a puncturing operation, and an open slot 14 and a flat structure 15 are sequentially formed on the sidewall of the needle tube 2 at the needle point 28; the open slot 14 can establish a channel for blood backflow during the puncturing process; the needle tube 2 penetrates out of the sleeve 29 of the catheter seat 6, and a certain gap 30 is arranged between the needle tube 2 and the sleeve 29 of the catheter seat 6 and used for blood backflow; the flat structure 15 is arranged at the rear end of the open slot 14, as shown in fig. 11, the widest size of the cross section of the flat structure 15 is larger than the outer diameter size of the needle tube 2, the needle tube 2 passes through the round hole 25 of the baffle 3, the baffle 3 is arranged between the needle handle part of the needle handle component 1 and the flat structure 15, the baffle 3 is arranged in the groove 8 of the needle tip protective sleeve 5, and the function is to ensure that the needle return prevention structure does not fall off from the needle handle component 1 after activation.
As shown in fig. 5, 8 and 9, the resilient device 4 includes a fixed end 18, a bent portion 27, a blocking plate 20 and a free end 21, the fixed end 18, the bent portion 27, the blocking plate 20 and the free end 21 are sequentially connected from the needle tube insertion end 9 to the needle tube insertion end 10, the bent portion 27 is provided with an opening 19, the opening 19 is used for the needle tube 2 to pass through, the fixed end 18 is connected with the connection port 16 through the hanging flexible port 22, the blocking plate 20 abuts against the surface of the needle tube 2, and the free end 21 is fixed on the boss 24 through the hook 23; the resilient means 4 is a spring plate having elasticity.
As shown in fig. 10 and 11, when the needle tube 2 is withdrawn, the hook 23 is hooked on the boss 24 before the needle is withdrawn, the resilient device 4 is resilient after the needle tube is withdrawn, the free end 21 blocks the puncture channel 26 through which the needle tube 2 can pass, the needle point of the needle tube 2 is prevented from passing through the needle point protecting sleeve 5 again, the hook 23 is automatically released from being hooked on the boss 24, and the needle point protecting sleeve 5 is separated from the catheter hub 6.
The working process is as follows: when the indwelling needle is used, the indwelling needle is inserted into a blood vessel of a patient through the needle tube 2, the needle tube 2 finishes the needle withdrawing operation, at the moment, the rebounding device 4 rebounds, the free end 21 blocks the puncture channel 26 for the needle tube 2 to pass through, the needle point of the needle tube 2 is prevented from passing through the needle point protective sleeve 5 again, meanwhile, the hook 23 is automatically released from being hooked with the boss 24, and the needle point protective sleeve 5 is separated from the catheter seat 6.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (10)
1. An anti-needle-stick assembly, comprising: the needle-return-preventing needle comprises a needle tip protective sleeve and a needle-return-preventing structure, wherein the needle tip protective sleeve is provided with a puncture channel for a needle tube to pass through, and the needle-return-preventing structure is arranged at the puncture channel to realize the communication/closing of the puncture channel.
2. The needle stick prevention assembly of claim 1, wherein: the needle point protective sleeve is provided with a cavity, a needle tube penetrating end and a needle tube penetrating end, the cavity and the needle tube penetrating end are sequentially connected, a hollow inserting table is arranged in the cavity, and the inserting table is communicated with the needle tube penetrating end to form a channel for inserting the catheter seat.
3. The needle stick prevention assembly of claim 2, wherein: and a boss opening is formed in one side of the inserting table and is used for the boss of the catheter holder to penetrate out.
4. The needle stick prevention assembly of claim 3, wherein: and a bayonet is arranged at the penetrating end of the needle tube and is used for clamping a clamping block on the catheter seat.
5. The needle stick prevention assembly of claim 4, wherein: the inner wall of the needle point penetrating end is provided with a longitudinal rib.
6. The needle stick prevention assembly of claim 5, wherein: the needle return prevention structure comprises a blocking piece and a rebounding device, the blocking piece is arranged in a groove formed in the penetrating end of the needle tube, and the rebounding device is arranged in a cavity of the needle tip protective sleeve.
7. The needle stick prevention assembly of claim 6, wherein: the needle tube is provided with a circular hole on the separation blade, the circular hole is used for the needle tube to penetrate, the diameter of the circular hole is smaller than the maximum width of the flat structure arranged on the needle tube, and therefore the limitation when the needle tube retreats is achieved.
8. The needle stick prevention assembly of claim 7, wherein: one end of the rebounding device is connected with a connecting port formed in the upper portion of the cavity, and the other end of the rebounding device is connected with the boss.
9. The needle stick prevention assembly of claim 8, wherein: the rebounding device comprises a fixed end, a bent part, a blocking plate and a free end, the fixed end is provided with an opening, the opening supplies the needle tube to pass through, the fixed end is connected with the connecting port through hooking a tough port, the blocking plate supports the surface of the needle tube, and the free end is fixed on the boss of the catheter seat through a hook.
10. The needle stick prevention assembly of claim 9, wherein: the rebounding device is an elastic spring piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021563430.1U CN212235496U (en) | 2020-07-31 | 2020-07-31 | Prevent acupuncture subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021563430.1U CN212235496U (en) | 2020-07-31 | 2020-07-31 | Prevent acupuncture subassembly |
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| Publication Number | Publication Date |
|---|---|
| CN212235496U true CN212235496U (en) | 2020-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021563430.1U Active CN212235496U (en) | 2020-07-31 | 2020-07-31 | Prevent acupuncture subassembly |
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| CN (1) | CN212235496U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113456987A (en) * | 2021-05-31 | 2021-10-01 | 泰尔茂医疗产品(杭州)有限公司 | Introducer guard, cannula part, cannula assembly and cannula device |
-
2020
- 2020-07-31 CN CN202021563430.1U patent/CN212235496U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113456987A (en) * | 2021-05-31 | 2021-10-01 | 泰尔茂医疗产品(杭州)有限公司 | Introducer guard, cannula part, cannula assembly and cannula device |
| CN113456987B (en) * | 2021-05-31 | 2023-08-08 | 泰尔茂医疗产品(杭州)有限公司 | Introducer protection device, cannula part, cannula assembly and cannula device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No.10 Yuanhe Road, Wuqing District, Tianjin Patentee after: Tianjin dimak Pharmaceutical Technology Co.,Ltd. Address before: 2 / F, No.4 workshop, No.6 Xinchuang Road, Wuqing District, Tianjin Patentee before: Tianjin Secco Kell Technology Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.10 Yuanhe Road, Wuqing District, Tianjin Patentee after: Tianjin Demak Medical Instrument Co.,Ltd. Address before: No.10 Yuanhe Road, Wuqing District, Tianjin Patentee before: Tianjin dimak Pharmaceutical Technology Co.,Ltd. |