Automatic retraction protection structure for needle head of venous blood taking needle

Abstract

The utility model relates to the technical field of medical instruments, and discloses a vein blood taking needle head automatic retraction protection structure which comprises a protection assembly and a retraction assembly, the protection assembly comprises a protection shell, a first groove is formed in the upper end of the protection shell, and second grooves are formed in the left end and the right end of the front end and the rear end in the protection shell; the retraction assembly is arranged at the left end of the interior of the protection shell and comprises a fixing block. According to the automatic retraction protection structure for the vein blood taking needle head, the retraction assembly is installed, a first button is pressed down after blood taking is completed, the fixed state of the fixing block can be relieved, and therefore the situation that a needle tube moves due to external reasons when medical staff conduct blood taking work is avoided, the safety coefficient can be greatly increased, and the safety coefficient of the medical staff is greatly increased. And then the push block is pushed leftwards, so that the blood collection tube and the needle tube can be completely collected into the protection shell, and the injury of the needle tube to medical staff can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an automatic retraction protection structure for a venous blood collection needle. Background Art

[0002] A venous blood collection needle is a blood collection needle used to collect blood samples during medical examinations. The top of the blood collection needle is used to puncture blood vessels, and the transparent hose at the tail end is connected to the tail needle. The tail needle is wrapped by a rubber hose and is used to pierce a vacuum blood collection tube. The negative pressure in the test tube is used to draw blood into the tube.

[0003] The prior art CN213667266U patent document proposes an automatic retraction protection structure for the needle of a venous blood collection needle. The patent document proposes: including a needle tube, a needle seat and a protective shell, the needle seat moves in the protective shell, the protective shell has at least two movement paths relative to the needle seat, and the two movement paths are transitionally connected front and back; when the protective shell is in the first movement path, the protective shell moves back and forth along the axis of the needle tube relative to the needle seat; when the protective shell is in the second movement path, the front of the needle seat cooperates with the rear of the protective shell, and the needle tube produces elastic bending deformation; a check assembly is also provided between the needle seat and the protective shell, and the check assembly is used to prevent the protective shell from entering the first movement path from the second movement path relative to the needle seat. The above-mentioned protection structure improves the protection performance by adding a check assembly, and eliminates the possibility of the needle tube causing harm to the medical staff and post-processing personnel.

[0004] The prior art uses a protective structure to retract the needle after the blood collection work is completed. However, after the needle is retracted, the needle will still be exposed outside the protective shell, so that the device may still cause harm to medical staff. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] The utility model aims to provide an automatic retraction protection structure for a venous blood collection needle, so as to solve the problem in the background art that the needle tube is still exposed outside the protective shell.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic retraction protection structure for a venous blood collection needle, comprising a protection component and a retraction component, the protection component comprising a protection shell, the upper end of the protection shell is provided with a groove 1, the left and right ends of the front and rear ends of the protection shell are provided with grooves 2, the retraction component is arranged at the left end of the protection shell, the retraction component comprises a fixed block, the fixed block is movably mounted at the left end of the protection shell, the front and rear ends of the fixed block are provided with grooves 3, one end of the groove 3 is fixedly mounted with a spring 1, one end of the spring 1 is movably mounted with a moving block, the front and rear ends of the protection shell are provided with grooves 3, A connecting ring 1 is fixedly installed on the left end of both ends, a spring 2 is fixedly installed on the left and right ends of one end inside the connecting ring 1, a button 1 is movably installed on one end of the spring 2, and a push rod 1 is fixedly installed in the middle of the button 1. By installing a retraction component, the buttons 1 can be pressed simultaneously after blood collection is completed to release the fixed state of the fixed block, so that the medical staff will not cause the movement of the needle tube due to external reasons when performing blood collection, so that the safety factor can be greatly increased, and then the push block is pushed to the left, so that the blood collection tube and the needle tube can be completely collected inside the protective shell, thereby preventing the needle tube from hurting the medical staff.

[0009] Preferably, the interior of the groove two is adapted to the outer end of the moving block, the interior of the groove two is movably mounted to the outer end of the moving block, the interior of the groove three is movably mounted to the outer end of the moving block, the outer end of the push rod one passes through the left end of the front and rear ends of the protective shell, and one end of the push rod one is fixedly connected to the front and rear ends of the moving block, so that medical staff will not cause the movement of the needle due to external reasons when performing blood collection.

[0010] Preferably, a blood collection tube is fixedly installed inside the fixed block, a needle tube is fixedly installed at the left end inside the blood collection tube, a fixing ring is fixedly installed in the middle of the left end of the protective shell, and a protective block is fixedly installed at the left end of the fixing ring, so that the safety factor can be greatly increased.

[0011] Preferably, a spring three is fixedly installed on the right end of the fixing ring, the right end of the spring three is movably installed on the left end of the fixing block, the outer end of the blood collection tube is movably connected to the inside of the spring three, and the outer end of the blood collection tube is movably installed to the inside of the protective block, so that the needle tube can be protected and fixed.

[0012] Preferably, a fixing component is provided at the right end of the front and rear ends of the protective shell, and the fixing component includes a connecting ring 2, and the connecting ring 2 is fixedly installed at the right end of the front and rear ends of the protective shell. A spring 4 is fixedly installed at the left and right ends of one end inside the connecting ring 2. By installing the fixing component, the needle tube will not move due to external reasons during protection.

[0013] Preferably, a button 2 is fixedly installed at the front and rear ends of the spring 4, a push rod 2 is fixedly installed at the middle part of the button 2, the outer end of the push rod 2 passes through the right end of the front and rear ends of the protective shell, and one end of the push rod 2 is movably connected to the front and rear ends of the moving block, so that the needle tube can be collected into the protective assembly for protection before blood collection, thereby preventing the needle tube from being infected by bacteria before use.

[0014] Preferably, a spring five is fixedly installed on the right end of the interior of the protective shell, the left end of the spring five is fixedly installed on the right end of the fixed block, the outer end of the blood collection tube is movably connected to the interior of the spring five, and wings are fixedly installed on the left ends of the front and rear ends of the protective shell, which can assist the work of medical staff and enable the blood collection work to be carried out stably.

[0015] Preferably, a through hole is provided at the upper end of the wing, a push block is fixedly installed at the upper end of the fixed block, a groove four is provided at the upper end of the push block, and the left and right ends of the push block are movably installed inside the groove one. By pushing the push block, the blood collection tube and the needle tube can be completely collected inside the protective shell, thereby preventing the needle tube from harming medical staff.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The automatic retraction protection structure of the venous blood collection needle can release the fixed state of the fixing block by installing the retraction component and pressing button 1 at the same time after the blood collection is completed, so that the medical staff will not cause the needle tube to move due to external reasons when performing blood collection, so that the safety factor can be greatly increased. Then push the push block to the left, so that the blood collection tube and the needle tube can be completely collected inside the protective shell, thereby preventing the needle tube from harming the medical staff;

[0018] 2. The automatic retraction protection structure of the venous blood collection needle is installed with a fixed component. When using the device, the medical staff first presses the buttons 2 installed at both ends at the same time to squeeze the moving block into the inside of the groove 3, so that the fixed block moves to the left with the blood collection tube and the needle tube. Before the blood collection work, the needle tube can be collected in the protection component for protection, so that the needle tube can be prevented from bacterial infection before use;

[0019] 3. The automatic retraction protection structure of the venous blood collection needle can prevent the needle from causing harm to medical staff before or after use by installing a protection component, and can also prevent the needle from causing bacterial infection to anyone before and after use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 This is a three-dimensional enlarged structural diagram of the protection component of the utility model;

[0023] Figure 4 This is a schematic diagram of an enlarged cross-section structure of a fixing component of the utility model;

[0024] Figure 5 This is an enlarged structural diagram of the cross-sectional details of the retracting component of the utility model;

[0025] Figure 6 This is a schematic diagram of the enlarged structure of the needle tube cross-section details of the utility model.

[0026] In the figure: 1. protection component; 101. protection shell; 102. groove one; 103. groove two; 2. retraction component; 201. fixed block; 202. groove three; 203. spring one; 204. moving block; 205. connecting ring one; 206. spring two; 207. button one; 208. push rod one; 3. blood collection tube; 4. needle tube; 5. fixing ring; 6. protection block; 7. spring three; 8. fixing component; 801. connecting ring two; 802. spring four; 803. button two; 804. push rod two; 9. spring five; 10. wing; 11. through hole; 12. push block; 13. groove four. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 6The utility model provides a technical solution: an automatic retraction protection structure for a venous blood collection needle, comprising a protection component 1 and a retraction component 2, the protection component 1 comprising a protection shell 101, a groove 102 is arranged at the upper end of the protection shell 101, grooves 2 103 are arranged at the left and right ends of the front and rear ends of the protection shell 101, the retraction component 2 is arranged at the left end of the protection shell 101, the retraction component 2 comprises a fixed block 201, the fixed block 201 is movably mounted at the left end of the protection shell 101, grooves 3 202 are arranged at the front and rear ends of the fixed block 201, a spring 1 203 is fixedly mounted at one end of the groove 3 202, a moving block 204 is movably mounted at one end of the spring 1 203, a connecting ring 1 205 is fixedly mounted at the left end of the front and rear ends of the protection shell 101, a spring 206 is fixedly mounted at the left and right ends of one end of the connection ring 1 205, a button 1 207 is movably mounted at one end of the spring 206, and a push rod 1 208 is fixedly mounted at the middle of the button 1 207.

[0029] The interior of the second groove 103 is adapted to the outer end of the moving block 204, the interior of the second groove 103 is movably installed with the outer end of the moving block 204, the interior of the third groove 202 is movably installed with the outer end of the moving block 204, the outer end of the push rod 1 208 passes through the left end of the front and rear ends of the protective shell 101, one end of the push rod 1 208 is fixedly connected with the front and rear ends of the moving block 204, the interior of the fixed block 201 is fixedly installed with a blood collection tube 3, the left end of the interior of the blood collection tube 3 is fixedly installed with a needle tube 4, and the middle part of the left end of the protective shell 101 is fixedly installed. A fixing ring 5 is provided, a protective block 6 is fixedly installed on the left end of the fixing ring 5, a spring three 7 is fixedly installed on the right end of the fixing ring 5, the right end of the spring three 7 is movably installed with the left end of the fixing block 201, the outer end of the blood sampling tube 3 is movably connected with the inside of the spring three 7, the outer end of the blood sampling tube 3 is movably installed with the inside of the protective block 6, and then the moving block 204 is moved to the inside of the groove two 103 by the squeezing of the spring one 203, so as to fix the fixed block 201, and then the blood sampling tube 3 and the needle tube 4 can be fixed by the cooperation of the fixing ring 5 and the protective block 6.

[0030] A fixing assembly 8 is provided at the right end of the front and rear ends of the protective shell 101, and the fixing assembly 8 includes a connecting ring 2 801, which is fixedly installed at the right end of the front and rear ends of the protective shell 101, and a spring 4 802 is fixedly installed at the left and right ends of one end inside the connecting ring 2 801, and a button 2 803 is fixedly installed at the front and rear ends of the spring 4 802, and a push rod 2 804 is fixedly installed in the middle of the button 2 803, and the outer end of the push rod 2 804 passes through the right end of the front and rear ends of the protective shell 101, and one end of the push rod 2 804 is movably connected to the front and rear ends of the moving block 204, and a spring 5 9 is fixedly installed at the right end inside the protective shell 101, and the left end of the spring 5 9 is fixedly installed to the right end of the fixed block 201, and the outer end of the blood collection tube 3 is movably connected to the inside of the spring 5 9, and a wing 10 is fixedly installed at the left end of the front and rear ends of the protective shell 101, and a through hole 11 is provided at the upper end of the wing 10, A push block 12 is fixedly installed on the upper end of the fixed block 201, and a groove four 13 is provided on the upper end of the push block 12. The left and right ends of the push block 12 are movably installed inside the groove one 102. The medical staff first holds the device in their hands through the wings 10 installed at both ends of the protective shell 101, and then presses the buttons two 803 installed at both ends at the same time. The button two 803 drives the push rod two 804 to move toward the middle. The push rod two 804 can push the moving block 204 to move toward the middle, so that the moving block 204 is squeezed into the inside of the groove three 202, and then the fixed block 201 is pushed to the left by the spring five 9, so that the fixed block 201 moves to the left with the blood collection tube 3 and the needle tube 4, and then the medical staff releases the button two 803, and the button two 803 is squeezed back to its original position by the spring four 802. Then the medical staff can push the push block 12 to the left through the cooperation of the groove four 13 and the groove one 102.

[0031] Working principle: When using the device, the medical staff first holds the device in their hands through the wings 10 installed at both ends of the protective shell 101, and then presses the buttons 803 installed at both ends at the same time, so that the buttons 803 drive the push rods 804 to move toward the middle, and the push rods 804 can push the moving block 204 to move toward the middle, so that the moving block 204 is squeezed into the inside of the groove 3 202, and then the fixed block 201 is pushed to the left by the spring 5 9, so that the fixed block 201 moves to the left with the blood collection tube 3 and the needle tube 4, and then the medical staff releases the button 80 3. The button 2 803 is restored to its original position by the squeezing of the spring 4 802. Then, the medical staff can push the push block 12 to the left through the cooperation of the groove 4 13 and the groove 1 102. The push block 12 drives the fixed block 201, the blood collection tube 3 and the needle tube 4 to move to the left, so that the needle tube 4 moves to the outer end of the protective shell 101 through the fixed ring 5 and the protective block 6. At the same time, the fixed block 201 moves to the left with the groove 3 202 to the middle of the left end groove 2 103. Then, the moving block 204 moves to the inside of the groove 2 103 by the squeezing of the spring 1 203, and the fixed block can be fixed. 201, and then the blood collection tube 3 and the needle tube 4 can be fixed by the cooperation of the fixing ring 5 and the protective block 6, and then the medical staff can perform the blood collection work through the cooperation of the wing 10 and the needle tube 4. After the blood collection is completed, the button 1 207 is pressed, and the button 1 207 drives the push rod 1 208 to move toward the middle, and the push rod 1 208 can push the moving block 204 to move toward the middle, so that the moving block 204 is squeezed into the inside of the groove 3 202, and then the fixing block 201 is pushed to the right by the spring 3 7, so that the fixing block 201 moves to the right with the blood collection tube 3 and the needle tube 4, and then The medical staff releases button one 207, and button one 207 returns to its original position due to the squeezing of spring two 206, and then pushes the push block 12 to the left, and the push block 12 drives the fixed block 201, the blood collection tube 3 and the needle tube 4 to move to the left, so that the needle tube 4 moves to the inside of the protective shell 101 through the fixed ring 5 and the protective block 6. At the same time, the fixed block 201 moves to the left with the groove three 202 to the middle of the groove two 103 at the right end, and then the moving block 204 moves to the inside of the groove two 103 through the squeezing of the spring one 203, which can fix the fixed block 201, the blood collection tube 3 and the needle tube 4.

[0032] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. An automatic retraction protection structure for a venous blood collection needle, comprising a protection component (1) and a retraction component (2), characterized in that: The protective component (1) comprises a protective shell (101), the upper end of the protective shell (101) is provided with a first groove (102), the left and right ends of the front and rear ends of the protective shell (101) are provided with second grooves (103), the retractable component (2) is arranged at the left end of the protective shell (101), the retractable component (2) comprises a fixed block (201), the fixed block (201) is movably mounted at the left end of the protective shell (101), and the front and rear ends of the fixed block (201) are provided with third grooves (202). ), a spring 1 (203) is fixedly installed at one end of the groove 3 (202), a moving block (204) is movably installed at one end of the spring 1 (203), a connecting ring 1 (205) is fixedly installed at the left end of the front and rear ends of the protective shell (101), a spring 2 (206) is fixedly installed at the left and right ends of one end of the inner side of the connecting ring 1 (205), a button 1 (207) is movably installed at one end of the spring 2 (206), and a push rod 1 (208) is fixedly installed in the middle of the button 1 (207).

2. The automatic retraction protection structure for a venous blood collection needle according to claim 1, characterized in that: The interior of the second groove (103) is adapted to the outer end of the moving block (204), the interior of the second groove (103) is movably mounted to the outer end of the moving block (204), the interior of the third groove (202) is movably mounted to the outer end of the moving block (204), the outer end of the push rod one (208) passes through the left end of the front and rear ends of the protective shell (101), and one end of the push rod one (208) is fixedly connected to the front and rear ends of the moving block (204).

3. The automatic retraction protection structure for a venous blood collection needle according to claim 2, characterized in that: A blood collection tube (3) is fixedly installed inside the fixed block (201), a needle tube (4) is fixedly installed at the left end inside the blood collection tube (3), a fixed ring (5) is fixedly installed in the middle of the left end of the protective shell (101), and a protective block (6) is fixedly installed at the left end of the fixed ring (5).

4. The automatic retraction protection structure for a venous blood collection needle according to claim 3, characterized in that: A spring three (7) is fixedly mounted on the right end of the fixing ring (5); the right end of the spring three (7) is movably mounted on the left end of the fixing block (201); the outer end of the blood sampling tube (3) is movably connected to the inside of the spring three (7); and the outer end of the blood sampling tube (3) is movably mounted to the inside of the protection block (6).

5. The automatic retraction protection structure for a venous blood collection needle according to claim 4, characterized in that: A fixing assembly (8) is provided at the right end of the front and rear ends of the protective shell (101), and the fixing assembly (8) comprises a second connecting ring (801), and the second connecting ring (801) is fixedly installed at the right end of the front and rear ends of the protective shell (101), and a spring four (802) is fixedly installed at the left and right ends of one end inside the second connecting ring (801).

6. The automatic retraction protection structure for a venous blood collection needle according to claim 5, characterized in that: Button 2 (803) is fixedly installed at the front and rear ends of the spring 4 (802), and push rod 2 (804) is fixedly installed in the middle of button 2 (803). The outer end of push rod 2 (804) passes through the right end of the front and rear ends of the protective shell (101), and one end of push rod 2 (804) is movably connected to the front and rear ends of the moving block (204).

7. The automatic retraction protection structure for a venous blood collection needle according to claim 6, characterized in that: A spring five (9) is fixedly mounted on the right end of the interior of the protective shell (101), the left end of the spring five (9) is fixedly mounted on the right end of the fixing block (201), the outer end of the blood sampling tube (3) is movably connected to the interior of the spring five (9), and wings (10) are fixedly mounted on the left ends of the front and rear ends of the protective shell (101).

8. The automatic retraction protection structure for a venous blood collection needle according to claim 7, characterized in that: A through hole (11) is provided at the upper end of the wing (10), a push block (12) is fixedly mounted at the upper end of the fixed block (201), a groove four (13) is provided at the upper end of the push block (12), and the left and right ends of the push block (12) are movably mounted inside the groove one (102).

Images