CN211270788U - Safety blood taking needle - Google Patents

Abstract

The utility model discloses a safety blood taking needle, which comprises a needle tube seat, wherein a needle tube is arranged on one side of the needle tube seat, a placing groove is formed in the surface of one side of the needle tube seat, which is positioned outside the needle tube, a protective sleeve is arranged inside the placing groove, a third spring is arranged at one end of the protective sleeve, the protective sleeve is fixedly connected with the needle tube seat through the third spring, and a limiting groove is formed in the surface of the protective sleeve; through the protective sheath of design, live for the parcel with the needle tubing, medical personnel only can contact the protective sheath, can not contact the needle tubing, and it is injured to have avoided hospital personnel's hand, has eliminated the potential safety hazard, and the operation mode is simple, improves work efficiency, also alleviates user of service's burden simultaneously.

Description

A safety lancet

technical field

The utility model belongs to the technical field of medical devices, in particular to a safety blood collection needle.

Background technique

With the development of society and the advancement of science and technology, people's living standards are constantly improving, and at the same time, more and more diseases also follow. It is often necessary to collect blood from patients when seeking medical treatment in the hospital. A lancet is used, which usually consists of a needle and a needle shaft. The first generation of blood collection needles: willow needles are processed from a whole piece of metal sheet. The needles are 3 to 4 cm long and look like a willow leaf. It is used to control the depth of needle insertion. There is a groove in the middle from the needle tip to the needle tail. The packaging is simple and easy to be contaminated. The second generation of blood collection needles: plastic compression molding needles are formed by plastic compression molding, the needle tip is made of stainless steel and other metals, each needle is equipped with a plastic needle cap, and the packaging is more independent. Take off the needle cap before use to prevent contamination, the needle is small, and proper operation will reduce the pain of the patient, and the price is low and can be used once.

There are still various problems with the lancets on the market. For example, a lancet disclosed by the authorization bulletin number CN208659379U can avoid displacement of the lancet during the blood collection process. Although the injection molding is easy to form during reproduction, the assembly is easy to standardize production, and the production cost is low, both of them do not solve the problem of the existing blood collection needle after blood collection, because the needle tube is exposed outside, medical staff In the next operation, the needle can easily puncture the hands of medical staff, and there is a potential safety hazard. For this reason, we propose a safe blood collection needle.

Utility model content

The purpose of the present utility model is to provide a safety type blood collection needle, so as to solve the problem of potential safety hazard due to the exposed needle tube after the blood collection needle proposed in the above-mentioned background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: a safety type blood collection needle, comprising a needle tube seat, one side of the needle tube seat is provided with a needle tube, and a surface of one side of the needle tube seat is located outside the needle tube. a groove, a protective sleeve is provided inside the placement groove, a third spring is provided at one end of the protective sleeve, and the protective sleeve is fixedly connected to the needle tube seat through the third spring, and a limiting groove is provided on the surface of the protective sleeve .

Preferably, a connecting rod is provided inside the needle tube holder at the top end of the limiting groove, a through hole is formed in the inside of the connecting rod, a connecting rod rotating shaft is arranged inside the needle tube base, and the connecting rod rotating shaft Passing through the hole, the connecting rod is fixedly connected with the needle tube seat through the rotating shaft of the connecting rod, one end of the connecting rod is provided with a pressing block, the bottom end of the pressing block is provided with a second spring, and the top end of the pressing block penetrates One side surface of the needle tube seat is outside the needle tube seat, the top surface of the other end of the connecting rod is provided with a first spring, the bottom end of the connecting rod is provided with a limit block, and the limit block penetrates through the needle tube seat Inside the limit slot.

Preferably, one end of the needle tube holder is provided with a catheter, and an end of the catheter is provided with a blood vessel.

Preferably, the outside of the needle tube seat is provided with a needle tube seat handle piece, and the surface of the needle tube seat handle piece is provided with raised dots.

Preferably, the outer wall of the limiting block is in close contact with the inner wall of the limiting groove, and the length of the limiting block is 2/3 of the pressing block.

Preferably, the length of the protective cover is 1.2 times that of the needle tube, and the surface of the protective cover is provided with a patterned hole therethrough.

Preferably, the height of the placement groove is 1.1 times the height of the protective cover.

Preferably, the length of the needle tube holder is 1.2 times the length of the needle tube.

Compared with the prior art, the utility model provides a fully automatic drug injection pump light shield, which has the following beneficial effects:

Through the designed protective sleeve, the needle tube is wrapped, and the medical staff will only touch the protective sleeve, not the needle tube, which avoids the hand injury of hospital personnel, eliminates potential safety hazards, and the operation method is simple, improving work efficiency, At the same time, it also reduces the burden on users.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Figure 2 is a schematic cross-sectional view of the needle tube seat structure of the present invention;

FIG. 3 is a schematic diagram of a limit block engaging protective sleeve of the present invention;

4 is an enlarged schematic view of the connection between the protective sleeve and the needle tube seat of the present invention;

In the figure: 1. Needle tube; 2. Needle tube seat handle piece; 3. Needle tube seat; 4. Catheter; 5. Blood vessel; 6. Protective sleeve; 7. Limit groove; 8. Limit block; 9. First spring ; 10, connecting rod; 11, connecting rod shaft; 12, pressing block; 13, second spring; 14, placing slot; 15, third spring.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figures 1-4, the present utility model provides a technical solution: a safety type blood collection needle, comprising a needle tube seat 3, a needle tube 1 is provided on one side of the needle tube seat 3, and a side surface of the needle tube seat 3 is located in the needle tube 1 There is a placement slot 14 on the outside of the placement slot 14, a protective sleeve 6 is provided inside the placement slot 14, a third spring 15 is provided at one end of the protective sleeve 6, and the protective sleeve 6 is fixedly connected with the needle tube seat 3 through the third spring 15. The protective sleeve 6 A limiting groove 7 is set on the surface of the .

Referring to FIG. 3 , in order to facilitate fixing the protective sleeve 6 without affecting the blood collection operation, in this embodiment, preferably, a connecting rod 10 is provided inside the needle tube holder 3 at the top end of the limiting groove 7 . The connecting rod 10 The inside of the needle tube seat 3 is provided with a through hole, the inside of the needle tube seat 3 is provided with a connecting rod rotating shaft 11, and the connecting rod rotating shaft 11 runs through the hole, the connecting rod 10 is fixedly connected with the needle tube seat 3 through the connecting rod rotating shaft 11, and one end of the connecting rod 10 is set There is a pressing block 12, the bottom end of the pressing block 12 is provided with a second spring 13, and the top end of the pressing block 12 penetrates one side surface of the needle tube seat 3 and is outside the needle tube seat 3, and the top surface of the other end of the connecting rod 10 is provided with a The first spring 9 and the bottom end of the connecting rod 10 are provided with a limiting block 8 , and the limiting block 8 penetrates through the needle tube seat 3 and is inside the limiting groove 7 .

Referring to FIG. 1 , in order to facilitate the display of the protective sleeve 6 , in this embodiment, preferably, one end of the needle tube holder 3 is provided with a catheter 4 , and an end of the catheter 4 is provided with a blood vessel 5 .

Referring to FIG. 1, in order to facilitate holding the handle piece 2 of the needle tube seat, in this embodiment, preferably, the outside of the needle tube seat 3 is provided with a needle tube seat handle piece 2, and the surface of the needle tube seat handle piece 2 is provided with a raised dots.

Referring to FIG. 3 , in order to easily fix the protective cover 6 so that it does not move, in this embodiment, preferably, the outer wall of the limit block 8 is closely fitted with the inner wall of the limit slot 7 , and the limit block The length of 8 is 2/3 of the pressing block 12.

Referring to FIG. 1 , in order to completely wrap the needle tube 1 , in this embodiment, preferably, the length of the protective cover 6 is 1.2 times that of the needle tube 1 , and the surface of the protective cover 6 is provided with through pattern holes.

Referring to FIG. 3 , in order to facilitate pressing, in this embodiment, preferably, the height of the placement groove 14 is 1.1 times the height of the protective cover 6 .

Referring to FIG. 1 , in order to facilitate blood collection, in this embodiment, preferably, the length of the needle tube holder 3 is 1.2 times the length of the needle tube 1 .

Working principle: After the installation of the device is completed and blood is collected, in order to protect the safety of medical staff, the pressing block 12 is first pressed down, and the pressing block 12 drives the connecting rod 10 to move. The other end of the connecting rod 10 is lifted upwards, so that the limiting block 8 at the bottom end of the connecting rod 10 leaves the interior of the limiting groove 7, and then the protective cover 6 can be ejected from the interior of the placing groove 14 under the extension of the third spring 15. , wrapping the needle tube 1, the medical staff will only touch the protective sleeve 6, not the needle tube 1, which avoids the hand injury of the hospital staff, and the operation method is simple, which improves the work efficiency and reduces the burden on the users. .

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (8)

1. A safety type blood collection needle, comprising a needle tube seat (3), characterized in that: one side of the needle tube seat (3) is provided with a needle tube (1), and one side surface of the needle tube seat (3) is in the needle tube The outside of (1) is provided with a placement groove (14), the interior of the placement groove (14) is provided with a protective cover (6), and one end of the protective cover (6) is provided with a third spring (15), and all the The protective sleeve (6) is fixedly connected with the needle tube seat (3) through a third spring (15), and a limiting groove (7) is provided on the surface of the protective sleeve (6). 2. A safety blood collection needle according to claim 1, characterized in that: a connecting rod (10) is provided inside the needle tube seat (3) at the top of the limiting groove (7), and the connecting rod The inside of (10) is provided with a through hole, the inside of the needle tube seat (3) is provided with a connecting rod rotating shaft (11), and the connecting rod rotating shaft (11) passes through the hole, and the connecting rod (10) passes through The connecting rod rotating shaft (11) is fixedly connected with the needle tube seat (3), one end of the connecting rod (10) is provided with a pressing block (12), and the bottom end of the pressing block (12) is provided with a second spring (13) , and the top end of the pressing block (12) penetrates one side surface of the needle tube seat (3) and is outside the needle tube seat (3), and the top end surface of the other end of the connecting rod (10) is provided with a first spring (9). ), the bottom end of the connecting rod (10) is provided with a limiting block (8), and the limiting block (8) penetrates the needle tube seat (3) and is inside the limiting groove (7). 3. A safety type blood collection needle according to claim 1, characterized in that: one end of the needle tube seat (3) is provided with a catheter (4), and the end of the catheter (4) is provided with a blood vessel ( 5). 4. A safety type blood collection needle according to claim 1, characterized in that: the outside of the needle tube seat (3) is provided with a needle tube seat handle piece (2), and the surface of the needle tube seat handle piece (2) Set with raised dots. 5. A safety type blood collection needle according to claim 2, characterized in that: the outer wall of the limit block (8) is closely fitted with the inner wall of the limit groove (7), and the limit block ( The length of 8) is 2/3 of the pressing block (12). 6. A safety type blood collection needle according to claim 1, characterized in that: the length of the protective sheath (6) is 1.2 times that of the needle tube (1), and the surface of the protective sheath (6) is provided with Perforated pattern holes. 7 . The safety lancet according to claim 1 , wherein the height of the placement groove ( 14 ) is 1.1 times the height of the protective sheath ( 6 ). 8 . 8 . The safety type blood collection needle according to claim 1 , wherein the length of the needle tube seat ( 3 ) is 1.2 times the length of the needle tube ( 1 ). 9 .

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