CN213282938U - Blood sampling device - Google Patents
Blood sampling device Download PDFInfo
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- CN213282938U CN213282938U CN202021907815.5U CN202021907815U CN213282938U CN 213282938 U CN213282938 U CN 213282938U CN 202021907815 U CN202021907815 U CN 202021907815U CN 213282938 U CN213282938 U CN 213282938U
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- needle
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- sleeve
- blood sampling
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Abstract
The utility model discloses a blood sampling device relates to hospital's blood sampling articles for use field, provides one kind when taking a blood sample, can avoid the steel needle of blood taking needle to deviate from the blood sampling device of heparin tube. The blood sampling device comprises a blood sampling needle and a blood sampling tube, the blood sampling needle comprises a connecting structure, the connecting structure comprises a steel needle, a needle handle and a protective sleeve, the steel needle is connected with the needle handle, the protective sleeve is sleeved outside the steel needle and connected with the needle handle, the blood sampling tube comprises a tube cap, and a through hole is formed in the tube cap; the needle handle is provided with a first connecting thread, the blood taking needle comprises a connecting sleeve, the connecting sleeve is sleeved outside the protective sleeve and is connected with the first connecting thread, a distance is reserved between the connecting sleeve and the protective sleeve, a distance is reserved between the end part of the connecting sleeve and the end part of the steel needle, and the connecting sleeve can be detachably connected with the pipe cap. During blood sampling, the steel needle pierces the protective sleeve and the tube plug, and the connecting sleeve is connected with the tube cap. Because the connecting sleeve is connected with the tube cap, the steel needle can be prevented from being separated from the blood sampling tube without holding the needle handle by hand.
Description
Technical Field
The utility model relates to a blood sampling articles for use field of hospital especially relates to a blood sampling device.
Background
The blood sampling device comprises a blood sampling needle and a blood sampling tube. The existing blood taking needle is shown in figures 1 and 2 and comprises a puncture needle, a blood conduit and a connecting structure, wherein the connecting structure comprises a steel needle, a needle handle and a protective sleeve, the steel needle is connected with the needle handle, and the protective sleeve is sleeved outside the steel needle and connected with the needle handle. The existing blood collection tube is shown in fig. 3 and comprises a tube body, a tube plug and a tube cap, wherein the tube body is internally vacuumized, the tube plug is flexible, the tube plug seals the tube body, the tube cap is connected with the tube body and fixes the tube plug, and the tube cap is provided with a through hole. During blood collection, as shown in fig. 4, the puncture needle pierces into a blood vessel of a human body, the connecting structure is connected with the blood collection tube, specifically, the steel needle pierces through the protective sleeve and pierces into the tube plug, and then the blood is accelerated to flow into the blood collection tube by means of the negative pressure of the blood collection tube.
The existing blood sampling device has the following defects: 1. as shown in fig. 4, when the steel needle pierces the protective sleeve and pierces the plug, the protective sleeve is compressed and shortened, and the protective sleeve rebounds due to the elasticity of the material, so that the steel needle is pulled outwards; although the pulling force is not large, the steel needle is only fixed by the elasticity of the pipe plug, and the fixing force is not large; if the blood sampling nurse does not hold the needle handle, the situation that the steel needle is separated from the blood sampling tube due to the resilience force of the protective sleeve often appears. 2. When the steel needle is just pulled out of the tube plug, because blood continuously flows out, the protective sleeve can not rebound to sleeve the steel needle immediately when the steel needle is just separated from the tube plug, and a small amount of blood can be left on the surface of the tube plug; the blood may be contaminated with other materials in the subsequent process, and if the blood of the patient is infected, the disease may be infected.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: provided is a blood collection device capable of preventing a steel needle of a blood collection needle from coming off a blood collection tube during blood collection.
The technical scheme adopted for solving the problems is as follows: the blood sampling device comprises a blood sampling needle and a blood sampling tube, the blood sampling needle comprises a connecting structure, the connecting structure comprises a steel needle, a needle handle and a protective sleeve, the steel needle is connected with the needle handle, the protective sleeve is sleeved outside the steel needle and connected with the needle handle, the blood sampling tube comprises a tube cap, and a through hole is formed in the tube cap; the needle handle is provided with a first connecting thread, the blood taking needle comprises a connecting sleeve, the connecting sleeve is sleeved outside the protective sleeve and is connected with the first connecting thread, a distance is reserved between the connecting sleeve and the protective sleeve, a distance is reserved between the end part of the connecting sleeve and the end part of the steel needle, and the connecting sleeve can be detachably connected with the pipe cap.
Further, the method comprises the following steps: the end part of the connecting sleeve is provided with a connecting flange and an axially arranged deformation groove, and the hole wall of the through hole is provided with a connecting ring groove matched with the connecting flange.
Further, the method comprises the following steps: the cross-sectional shape of the connecting flange is semicircular.
Further, the method comprises the following steps: the needle handle is provided with a second connecting thread in front of the first connecting thread, the connecting structure comprises a needle sleeve, the needle sleeve is positioned between the connecting sleeve and the protective sleeve, and the needle sleeve is connected with the second connecting thread.
Further, the method comprises the following steps: the needle handle is provided with a third connecting thread which is positioned behind the first connecting thread.
Further, the method comprises the following steps: the blood collection tube comprises a tube cover, and the tube cover is connected with the tube cap and seals the through hole.
Further, the method comprises the following steps: the pipe cover is sleeved on the pipe cap and is connected with the pipe cap in a matching way.
The utility model has the advantages that: 1. as shown in fig. 8, during blood sampling, the steel needle penetrates through the protective sleeve and penetrates into the tube plug, and the connecting sleeve is connected with the tube cap. Because the connecting sleeve is connected with the tube cap, the steel needle can be prevented from being separated from the blood sampling tube without holding the needle handle by hand. The utility model has the advantages of more blood sampling amount, longer blood sampling time or more obvious advantages when collecting multitubular blood.
2. The blood sampling device is further provided with a tube cover, the tube cover covers the tube cap, blood can be sampled by opening the tube cover, and the tube cover is covered after the blood sampling is finished, so that the pollution and disease infection caused by the blood left on the tube plug can be avoided. The pipe cover can also play a role in preventing the pipe plug from being polluted.
Drawings
FIG. 1 is a view of a conventional lancet structure;
FIG. 2 is a coupling structure diagram of a conventional lancet;
FIG. 3 is a view showing the structure of a conventional blood collection tube;
FIG. 4 is a view showing a state of use of a conventional blood collection device;
fig. 5 is a connection structure diagram of the present invention;
fig. 6 is an external view of the connection structure of the present invention;
FIG. 7 is a view showing the structure of the blood collection tube of the present invention;
FIG. 8 is a view showing a state of use of the blood collection device of the present invention;
labeled as: blood collection needle 1, connection structure 11, steel needle 111, needle handle 112, first connection thread 1121, second connection thread 1122, third connection thread 1123, protective sleeve 113, needle sheath 114, connecting sleeve 115, connecting flange 1151, deformation groove 1152, puncture needle 12, blood conduit 13, blood collection tube 2, tube cap 21, through hole 211, connecting ring groove 212, tube cover 22, tube body 23, tube plug 24 and needle holder 3.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
As shown in fig. 5 to 7, the blood collection device comprises a blood collection needle 1 and a blood collection tube 2, the blood collection needle 1 comprises a connecting structure 11, the connecting structure 11 comprises a steel needle 111, a needle handle 112 and a protective sleeve 113, the steel needle 111 is connected with the needle handle 112, the protective sleeve 113 is sleeved outside the steel needle 111 and is connected with the needle handle 112, the blood collection tube 2 comprises a tube cap 21, and the tube cap 21 is provided with a through hole 211; the needle handle 112 is provided with a first connecting thread 1121, the blood collection needle 1 comprises a connecting sleeve 115, the connecting sleeve 115 is sleeved outside the protective sleeve 113 and is connected with the first connecting thread 1121, a distance is reserved between the connecting sleeve 115 and the protective sleeve 113, a distance is reserved between the end of the connecting sleeve 115 and the end of the steel needle 111, and the connecting sleeve 115 can be detachably connected with the tube cap 21.
The connecting sleeve 115 can be dismantled the concrete mode of being connected with the pipe cap 21 and can have a plurality ofly, the utility model discloses preferred mode is: the end of the connecting sleeve 115 has a connecting flange 1151 and an axially arranged deformation groove 1152, and the hole wall passing through the hole 211 has a connecting ring groove 212 adapted to the connecting flange 1151.
As shown in FIG. 8, during blood collection, the steel needle 111 pierces the protective sheath 113 and pierces the plug 24; meanwhile, the connecting sleeve 115 can be contracted to enter the through hole 211 due to the deformation groove 115. When the connection flange 1151 reaches the connection ring groove 212, the connection sleeve 115 rebounds, and the connection flange 1151 is inserted into the connection ring groove 212, so that the connection sleeve 115 is connected with the cap 21, and the steel needle 111 is prevented from being pulled out of the blood collection tube 2 due to the rebounding of the protection sleeve 113. After blood collection is completed, the connecting structure 11 can be pulled out only by pulling the connecting structure 11 outwards with force, and the connecting sleeve 115 is shrunk. Since the connecting sleeve 115 does not require much connecting force with the pipe cap 21, the rigidity of the connecting sleeve 115 does not need to be large, and the insertion and extraction force of the connecting structure 11 does not need to be increased much.
The cross-sectional shape of the coupling flange 1151 is preferably semicircular, and accordingly, the cross-sectional shape of the coupling ring groove 212 is also semicircular.
It should be noted that the connection flange 1151 is fitted into the connection ring groove 212, and the connection structure 11 is required to be substantially concentric with the blood collection tube 2. As shown in fig. 3 and 7, the center of the existing tube plug 24 is concave, the tube plug 24 of the present invention is also concave as in the prior art, and can ensure that the steel needle 111 is substantially concentric with the blood collection tube 2 when inserted, thereby ensuring that the connection sleeve 115 can enter the through hole 211, and the connection flange 1151 can be embedded into the connection ring groove 212.
In order to protect the lancet 1 from puncture when not in use, the connecting structure 11 should comprise a needle hub 114, as in the prior art. To facilitate connection of the needle hub 114, as shown in fig. 5, the needle shaft 112 has a second connecting thread 1122 located forward of the first connecting thread 1121, the needle hub 114 is located between the connecting sleeve 115 and the protective sheath 113, and the needle hub 114 is connected to the second connecting thread 1122. When the blood collection needle 1 is used, the needle cover 114 is removed.
In order to avoid the puncture of the steel needle 111 during blood collection in the continuous blood collection of multiple tubes, as shown in fig. 8, a needle holder 3 may be connected to the needle handle 112, and the needle holder 3 may be a sleeve having a diameter larger than that of the blood collection tube 2 and long enough to completely cover the steel needle 111, so that the needle holder 3 is held by hand to insert the steel needle 111 into the blood collection tube 2 more safely because the steel needle 111 is completely covered. In the prior art, the needle holder 3 and the needle sheath 114 share the thread on the needle handle 112, but the needle holder and the needle sheath 114 cannot share the second connecting thread 1122, so the needle handle 112 of the present invention has the third connecting thread 1123 behind the first connecting thread 1121. The third connecting thread 1123 is used for connecting the needle holder 3. Due to the larger third connecting thread 1123, the needle holder 3 should be modified accordingly to fit the third connecting thread 1123.
The utility model discloses further preferred heparin tube 2 includes tube cap 22, and tube cap 22 is connected and seals clearing hole 211 with tube cap 21. Blood can be collected by opening the tube cap 22, and after the blood collection is finished, the tube cap 22 is covered, so that the pollution and disease infection caused by the blood left on the tube plug 24 can be avoided. Cap 22 may also serve to prevent contamination of plug 24.
The tube cap 22 and the tube cap 21 can be connected by fitting the tube cap 22 on the tube cap 21 and fitting the tube cap 21.
Claims (7)
1. The blood sampling device comprises a blood sampling needle (1) and a blood sampling tube (2), wherein the blood sampling needle (1) comprises a connecting structure (11), the connecting structure (11) comprises a steel needle (111), a needle handle (112) and a protective sleeve (113), the steel needle (111) is connected with the needle handle (112), the protective sleeve (113) is sleeved outside the steel needle (111) and is connected with the needle handle (112), the blood sampling tube (2) comprises a tube cap (21), and a through hole (211) is formed in the tube cap (21); the method is characterized in that: the needle handle (112) is provided with a first connecting thread (1121), the blood taking needle (1) comprises a connecting sleeve (115), the connecting sleeve (115) is sleeved outside the protective sleeve (113) and is connected with the first connecting thread (1121), a distance is reserved between the connecting sleeve (115) and the protective sleeve (113), a distance is reserved between the end part of the connecting sleeve (115) and the end part of the steel needle (111), and the connecting sleeve (115) can be detachably connected with the pipe cap (21).
2. The lancing device according to claim 1, wherein: the connecting sleeve (115) has an end with a connecting flange (1151) and an axially arranged deformation groove (1152), and the hole wall passing through the hole (211) has a connecting ring groove (212) matched with the connecting flange (1151).
3. The lancing device according to claim 2, wherein: the cross-sectional shape of the connection flange (1151) is semicircular.
4. The lancing device according to claim 3, wherein: the needle handle (112) is provided with a second connecting thread (1122) in front of the first connecting thread (1121), the connecting structure (11) comprises a needle sleeve (114), the needle sleeve (114) is positioned between the connecting sleeve (115) and the protective sleeve (113), and the needle sleeve (114) is connected with the second connecting thread (1122).
5. The lancing device according to claim 4, wherein: the needle handle (112) is provided with a third connecting thread (1123) which is positioned behind the first connecting thread (1121).
6. The lancing device according to any one of claims 1 to 5, wherein: the blood collection tube (2) comprises a tube cover (22), and the tube cover (22) is connected with the tube cap (21) and seals the through hole (211).
7. The lancing device according to claim 6, wherein: the pipe cover (22) is sleeved on the pipe cap (21) and is connected with the pipe cap (21) in a matching mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021907815.5U CN213282938U (en) | 2020-09-04 | 2020-09-04 | Blood sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021907815.5U CN213282938U (en) | 2020-09-04 | 2020-09-04 | Blood sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213282938U true CN213282938U (en) | 2021-05-28 |
Family
ID=76028820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021907815.5U Active CN213282938U (en) | 2020-09-04 | 2020-09-04 | Blood sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213282938U (en) |
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2020
- 2020-09-04 CN CN202021907815.5U patent/CN213282938U/en active Active
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