CN216823456U

CN216823456U - Retractable blood taking needle

Info

Publication number: CN216823456U
Application number: CN202123249144.5U
Authority: CN
Inventors: 潘彦; 罗欢; 崔美琦
Original assignee: General Hospital of Chinese PLA Hainan Branch
Current assignee: General Hospital of Chinese PLA Hainan Branch
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-06-28
Anticipated expiration: 2031-12-22

Abstract

The utility model discloses a retractable blood taking needle, including syringe needle and blood transfusion hose, during the syringe needle rear end extended to the blood transfusion hose, syringe needle outside fixedly connected with was convenient for carry out the needle handle that grips to it, and syringe needle and blood transfusion hose junction installation are provided with the backup pad, and syringe needle outside cover is equipped with and is used for providing the sleeve pipe of protection to it, sets up the inside and outside notch that link up on the lateral wall of sleeve pipe both ends respectively, is equipped with canceling release mechanical system between sleeve pipe and the backup pad. The utility model discloses the sleeve pipe can provide stable protection to the syringe needle when the restriction, prevents that it from stabbing medical personnel or patient, through the spacing mating reaction between fixed column and the fixed orifices, can fix the sheathed tube position and remove the protection to the syringe needle to use the syringe needle to take a blood sample work, and the blood sampling back that finishes, promote the sleeve pipe alright with remove the restriction to its position, reset spring application of force can make the quick outside of removing to the syringe needle of sleeve pipe provide the protection simultaneously.

Description

Retractable blood taking needle

Technical Field

The utility model relates to a blood sampling equipment technical field especially relates to retractable blood taking needle.

Background

The blood taking needle is an instrument for collecting blood samples in the medical examination process, is frequently used in the treatment process of hospitals, is short in arm and inconvenient to operate when a child takes blood, and therefore a section of hose is specially arranged on the front side of the blood taking needle, and is matched with an adhesive tape to fix the blood taking needle on the arm of a patient.

To this end, retractable lancets have been proposed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a retractable blood taking needle.

In order to realize the purpose, the utility model adopts the following technical scheme:

retractable blood taking needle, including syringe needle and blood transfusion hose, and the syringe needle rear end extends to the blood transfusion hose in, syringe needle outside fixedly connected with is convenient for carry out the needle handle that grips it, the installation of syringe needle and blood transfusion hose junction is provided with the backup pad, syringe needle outside cover is equipped with the sleeve pipe that is used for providing the protection to it, and sets up the notch that link up inside and outside respectively on the lateral wall of sleeve pipe both ends, be equipped with canceling release mechanical system between sleeve pipe and the backup pad.

Preferably, the needle handle penetrates through the notch to extend to the outside, and the surface of the side wall of the needle handle, which is positioned on the outside of the sleeve, is covered with a friction layer.

Preferably, a clamping groove is formed in the lower end face of the supporting plate and is in clamping fit with the side wall of the rear end of the needle head, a fixing hole with two through sides is formed in the side wall of the supporting plate, a fixing column is fixedly connected to the inner wall of the front end of the sleeve, the fixing column is matched with the fixing hole in position, and the diameter of the fixing column is larger than that of the fixing hole.

Preferably, a closing plug for closing the sleeve is arranged on the inner side of the front end opening of the sleeve, and the closing plug and the inner wall surface of the opening of the sleeve are respectively provided with matched threads.

Preferably, the reset mechanism comprises a group of guide holes formed in the side wall of the support plate, a transverse guide rod is fixedly connected to the side wall of the inner cavity of the sleeve, the guide rod longitudinally penetrates through the whole guide hole, a reset spring is sleeved on the outer side of the part, located at the rear end of the support plate, of the guide rod, and two ends of the reset spring are fixedly connected with the support plate and the inner wall of the sleeve respectively.

Compared with the prior art, the beneficial effects of the utility model are that:

the sleeve can stably move along the same direction in the using process through the guiding action of the arranged guide rod and the guide hole, and the damage to an external needle head structure caused by the position deviation of the sleeve is avoided; the needle head is moved to the outer side by pulling the sleeve to move towards the rear side, after the fixed column is inserted into the fixed hole, the position of the sleeve can be fixed and the protection on the needle head can be removed by the limit matching effect between the fixed column and the fixed hole, so that the needle head is used for carrying out blood sampling work, after the blood sampling is finished, the sleeve is pushed to enable the fixed column to move out of the fixed hole, so that the position limitation of the fixed column can be removed, meanwhile, the sleeve can be rapidly moved to the outer side of the needle head by the force applied by the reset spring, the opening at the outer end of the sleeve is closed by screwing the closing plug, the needle head is stably arranged in the sleeve, and medical staff or patients are prevented from being pricked by the needle head; and the backup pad passes through the elastic force effect of draw-in groove lateral wall, and the joint sets up on the lateral wall of syringe needle, and then makes the device can follow the tearing open of using the syringe needle after accomplishing to use it repeatedly and improve the utilization ratio, avoid causing too much waste.

Drawings

FIG. 1 is a schematic view of the front overall structure of the present invention;

FIG. 2 is a schematic side sectional view of the present invention;

FIG. 3 is a schematic view of the whole structure of the junction between the supporting plate and the needle head of the present invention;

fig. 4 is a schematic front sectional structural view of the sleeve of the present invention.

In the figure: 1. needle head, 2, transfusion hose, 3, needle handle, 4, support plate, 401, clamping groove, 402, fixing hole, 403, fixing column, 5, sleeve, 501, closing plug, 6, notch, 7, reset mechanism, 701, guide hole, 702, guide rod, 703 and reset spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, but retractable blood taking needle, including syringe needle 1 and blood transfusion hose 2, and in 1 rear end of syringe needle extended to blood transfusion hose 2, the blood transfusion hose 2 other end is connected with the pjncture needle, the pjncture needle link up with outside blood sampling test tube and links to each other, 1 outside fixedly connected with of syringe needle is convenient for handle 3 that grips it, set up notch 6 that link up inside and outside respectively on the 5 both ends lateral wall of sleeve pipe, position phase-match between notch 6 and the handle 3, can not cause the influence to the removal process of sleeve pipe 5, handle 3 runs through notch 6 and extends to the outside, handle 3 is located the lateral wall surface that sleeve pipe 5 outside and covers there is the frictional layer, the tiny recess of multiunit has been seted up on the 3 lateral walls of handle, increase frictional force is convenient for medical personnel more stable gripping it.

A supporting plate 4 is arranged at the joint of the needle 1 and the blood transfusion hose 2, a clamping groove 401 is arranged on the lower end surface of the supporting plate 4, the whole clamping groove 401 is arc-shaped, the angle is more than 180 degrees, the side wall of the outer end of the clamping groove 401 is made of soft plastic, thereby facilitating the medical staff to take the support plate 4 off the needle 1, the clamping groove 401 is clamped and matched with the side wall of the back end of the needle 1, the side wall of the support plate 4 is provided with a fixing hole 402 with two through sides, the inner wall of the front end of the sleeve 5 is fixedly connected with a fixing column 403, the position between the fixing column 403 and the fixing hole 402 is matched, the diameter of the fixing column 403 is larger than that of the fixing hole 402, and the fixing column 403 is integrally made of rubber material, the whole body has elasticity, so that the fixing column 403 can smoothly pass through the fixing hole 402 to move to the other side, the positional relationship between the sleeve 5 and the supporting plate 4 is fixed so that the needle 1 is located outside for use.

1 outside cover of syringe needle is equipped with and is used for providing the sleeve pipe 5 of protection to it, and 5 front end opening inboards of sleeve pipe are equipped with and are used for carrying out closed stopper 501 to it, and closed stopper 501 and 5 opening inner wall surfaces of sleeve pipe are equipped with the assorted screw thread respectively, guarantee closed stability through screw-thread fit between the two, and then provide the protection to inside syringe needle 1, and closed stopper 501 inner wall surface is provided with soft cushion, can not cause the harm to the structure of syringe needle.

Be equipped with canceling release mechanical system 7 between sleeve 5 and the backup pad 4, canceling release mechanical system 7 is including seting up a set of guiding hole 701 on the backup pad 4 lateral wall, fixedly connected with horizontal guide bar 702 on the sleeve 5 inner chamber lateral wall, and guide bar 702 vertically runs through whole guiding hole 701, the partial outside cover that guide bar 702 is located the backup pad 4 rear end is equipped with reset spring 703, reset spring 703's elasticity is the contraction type, when the device takes out under reset spring 703's elastic force effect, sleeve 5 is located the syringe needle 1 outside and provides the protection, reset spring 703 both ends respectively with backup pad 4 and sleeve 5 inner wall between fixed linking to each other, after the injection finishes, promote sleeve 5 and make fixed column 403 shift out fixed orifices 402 and remove the restriction, reset spring 703 application of force makes the quick outside of removing to syringe needle 1 of sleeve 5 provide the protection this moment.

The working principle of the utility model is that the device is moved to the using position when in use, the sleeve 5 is pulled to move towards the direction of the blood transfusion hose 2, the needle head 1 is moved to the outer side of the sleeve 5, in the process, the guide rod 702 and the guide hole 701 are in limit fit to limit the moving direction of the sleeve 5, after the fixed column 403 is inserted into the fixed hole 402, the fixed column 403 is in limit fit to fix the position of the sleeve 5 and remove the limit on the needle head 1, then the medical personnel uses the needle head 1 to take blood, after the blood taking is finished, the needle head is slowly pulled out, the sleeve 5 is pushed to move towards the needle head 1, the fixed column 403 is gradually moved out of the fixed hole and further removes the position limit on the sleeve 5, at the moment, the reset spring applies force to drive the sleeve 5 to rapidly move to the outer side of the needle head, and simultaneously the closing plug 501 is screwed on the front end opening of the sleeve 5, and then provide protection to syringe needle 1, when the device use needs to be discarded, extract syringe needle 1 from blood transfusion hose 2, then dismantle backup pad 4 from syringe needle 1, and then with backup pad 4 and sleeve pipe 5 and additional structure with syringe needle 1 separation to it uses to be convenient for follow-up repetition.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. Retractable blood taking needle, including syringe needle (1) and blood transfusion hose (2), and syringe needle (1) rear end extends to in blood transfusion hose (2), its characterized in that, syringe needle (1) outside fixedly connected with is convenient for carry out needle handle (3) that grips to it, syringe needle (1) is provided with backup pad (4) with the installation of blood transfusion hose (2) junction, syringe needle (1) outside cover is equipped with and is used for providing sleeve pipe (5) of protection to it, and sets up notch (6) that link up inside and outside respectively on sleeve pipe (5) both ends lateral wall, be equipped with canceling release mechanical system (7) between sleeve pipe (5) and backup pad (4).

2. A retractable lancet according to claim 1, wherein the needle shaft (3) extends to the outside through the notch (6), and the surface of the side wall of the needle shaft (3) located outside the sleeve (5) is covered with a friction layer.

3. The retractable blood collection needle of claim 1, wherein a clamping groove (401) is formed in the lower end face of the support plate (4), the clamping groove (401) is in clamping fit with the side wall of the rear end of the needle (1), a fixing hole (402) with two through sides is formed in the side wall of the support plate (4), a fixing column (403) is fixedly connected to the inner wall of the front end of the sleeve (5), the fixing column (403) is matched with the fixing hole (402), and the diameter of the fixing column (403) is larger than that of the fixing hole (402).

4. A retractable lancet according to claim 1, wherein the inside of the front opening of the sleeve (5) is provided with a closing plug (501) for closing the sleeve, and the inner wall surfaces of the opening of the closing plug (501) and the sleeve (5) are respectively provided with matching threads.

5. The retractable blood collection needle of claim 1, wherein the reset mechanism (7) comprises a set of guide holes (701) formed in the side wall of the support plate (4), a transverse guide rod (702) is fixedly connected to the side wall of the inner cavity of the sleeve (5), the guide rod (702) longitudinally penetrates through the whole guide hole (701), a reset spring (703) is sleeved on the outer side of the part, located at the rear end of the support plate (4), of the guide rod (702), and two ends of the reset spring (703) are respectively and fixedly connected with the inner walls of the support plate (4) and the sleeve (5).