Venous hemostix

Abstract

The utility model relates to a vein hemostix which comprises a needle holder, and the needle holder comprises a sleeve, a locking structure and an operation structure. The sleeve is provided with a first end and a second end, the first end of the sleeve is provided with a first channel, the first channel is used for locking a puncture needle, the locking structure is arranged on the inner side face of the first channel, the locking structure is movably connected with the sleeve and can enter the sleeve, and the operation structure is partially arranged in the sleeve and can be used for locking the puncture needle. The operation structure is movably connected with the sleeve, and the operation structure is movably connected with the locking structure, so that the locking structure can be controlled to enter the sleeve; after the puncture needle enters the first channel of the sleeve, the locking structure automatically locks the puncture needle, after blood sampling is completed, the adjusting operation structure can control the locking structure to retract into the sleeve, the puncture needle can fall in the first channel, the puncture needle does not need to be manually screwed, the puncture risk is reduced, and operation is more convenient.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment, and specifically relates to a venous blood sampling device. Background Art

[0002] Vacuum venous blood collection device is used to collect blood samples during medical examinations. The venous blood collection needle consists of a needle holder, a connector, a puncture needle, a rubber part, etc.; the vacuum blood collection device includes three parts: a vacuum blood collection tube, a blood collection needle (straight needle and scalp blood collection needle), and a needle holder.

[0003] The traditional needle holder has certain requirements on the nurse's technique of fixing the needle. The needle needs to be rotated and connected to the needle holder. After use, the puncture needle needs to be clamped on the appropriate sharps box, and the needle holder is rotated to rotate the puncture needle down and drop it directly into the sharps box. If the needle and the needle holder are screwed too loosely, the needle will be unstable and easy to shake during blood drawing, affecting the puncture of the patient's vein. If the needle and the needle holder are screwed too tightly, it will be difficult to remove the needle when handling it, and the needle can only be twisted by hand at the needle tip, which will cause the risk of needle stick injury.

[0004] The utility model aims at solving the above problems and provides a venous blood sampling device. Utility Model Content

[0005] In order to overcome the problems raised in the background technology, the utility model adopts the following technical solutions:

[0006] A venous blood sampling device comprises a needle holder, which comprises a sleeve, a locking structure and an operating structure; the sleeve has a first end and a second end, the first end of the sleeve is provided with a first channel, the first channel is used to lock the puncture needle, the locking structure is arranged on the inner side of the first channel, the locking structure is movably connected to the sleeve, the locking structure can enter the interior of the sleeve, the operating structure is partially arranged inside the sleeve, the operating structure is movably connected to the sleeve, the operating structure is movably connected to the locking structure, and the locking structure can be controlled to enter the interior of the sleeve; after the puncture needle enters the first channel of the sleeve, the locking structure automatically locks the puncture needle, and after blood sampling is completed, the operating structure can be adjusted to control the locking structure to retract and enter the interior of the sleeve, the puncture needle can fall in the first channel, there is no need to manually twist the puncture needle, the risk of puncture is reduced, and the operation is more convenient.

[0007] Furthermore, the second end of the sleeve is hollow, the first channel in the sleeve is connected to the second end of the sleeve, and the second end of the sleeve is used to place a vacuum blood collection tube for blood collection.

[0008] Furthermore, a first groove is arranged on the inner side surface of the first channel of the sleeve, and two first grooves are arranged in a mirror image.

[0009] Furthermore, a second groove is arranged below the first groove, a receiving cavity is arranged below the second groove, two openings are arranged in a mirror image on the sleeve outside the receiving cavity, and the direction of the openings is the same as that of the first groove. The second groove and the receiving cavity are used to place the operating structure.

[0010] Furthermore, the locking structure is configured as a rectangular block, which is arranged in the first groove, and a slope is provided on the side of the rectangular block close to the first channel, and the slope faces the first end of the sleeve; the above configuration ensures that after the puncture needle is inserted, it can be squeezed with the slope to force the rectangular block to enter the first groove; a first connecting piece is provided at the bottom of the locking structure, and a slot is provided on the first connecting piece.

[0011] Furthermore, a circular ring is provided on the inner side surface of the first groove, and the circular ring is fixedly connected in the first groove. A spring is provided in the circular ring, and the spring is located between the inner side surface of the first groove and the inner side surface of the locking structure. At this time, the spring is in a compressed state and can push the locking structure part out of the first groove.

[0012] Furthermore, the operating structure includes an operating portion, a fixing rod and a connecting rod; the operating portion is fixedly connected to a first end of the fixing rod, and a second end of the fixing rod is movably connected to the connecting rod.

[0013] Furthermore, the operating portion is cylindrical in shape, a limiting plate is provided at the bottom of the operating portion, the limiting plate is fixedly connected to the operating portion, the limiting plate is circular in shape, and the diameter of the limiting plate is greater than the diameter of the operating portion.

[0014] Furthermore, a first cylindrical groove is mirrored on the outer side surface of the sleeve, and a second cylindrical groove is arranged inside the first cylindrical groove; the operating part is arranged in the first cylindrical groove, the limiting plate is arranged in the second cylindrical groove, and the operating part can move in the first cylindrical groove.

[0015] Furthermore, a third groove is provided at the first end of the connecting rod, a first cylindrical rod is provided in the third groove, and the first cylindrical rod is provided in the slot hole on the first connecting member; a second connecting member is provided at the second end of the connecting rod, and a slot hole is provided on the second connecting member.

[0016] Furthermore, a fourth groove is arranged at the second end of the fixing rod, a second cylindrical rod is arranged in the fourth groove, and the second cylindrical rod is arranged in a slot hole on the second connecting member.

[0017] Furthermore, a through hole is provided in the middle of the connecting rod, and a round rod is provided in the accommodating cavity. The round rod is perpendicular to the connecting rod, and the round rod is adapted to the through hole. The round rod passes through the through hole, and both ends of the round rod are fixedly connected to the inner wall of the accommodating cavity of the sleeve; the above arrangement ensures that the connecting rod can rotate along the round rod; the operating part is pressed, and the operating part drives the fixed rod to move, drives the second end of the connecting rod to move, and the first end of the connecting rod moves in the opposite direction, driving the locking structure to shrink into the first groove, and the puncture needle can be taken out at this time.

[0018] Furthermore, the venous blood sampler also includes a puncture needle, which includes a needle head, a fixing part and a rubber part. The needle head, the fixing part and the rubber part are fixedly connected in sequence. A fixing groove is arranged on the fixing part. The width of the fixing groove gradually increases from top to bottom. The locking structure can be stuck in the fixing groove to achieve fixation.

[0019] The beneficial effects of the utility model are as follows: the utility model has a reasonable structure; by arranging the sleeve, the puncture needle can be fixed on the sleeve, and the vacuum blood collection tube can be fixed on the rubber part of the puncture needle in the sleeve, so blood collection is convenient; by arranging the locking structure and the adapted puncture needle, it is ensured that after the puncture needle is inserted, the locking structure can fix the puncture needle in the sleeve, and there is no need to rotate and fix the puncture needle. After the blood collection is completed, the operating part on the outside of the sleeve is pressed, and the puncture needle can fall out of the sleeve under the action of gravity and be collected in the sharp tool box. It does not need to be unscrewed by hand, which reduces the risk of puncture needle injury. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0022] Figure 3 This is a schematic diagram of the structure of the needle holder of the utility model;

[0023] Figure 4 This is a schematic cross-sectional view of the needle holder of the utility model;

[0024] Figure 5 It is a cross-sectional structural diagram of the locking structure and the operating structure of the utility model;

[0025] Figure 6 It is a structural schematic diagram of the locking structure of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the connecting rod of the utility model;

[0027] Figure 8 It is a structural schematic diagram of the connection between the operating part and the fixing rod of the utility model;

[0028] Fig. 9 This is a schematic diagram of the structure of the puncture needle of the utility model;

[0029] In the figure, 1, sleeve; 2, first channel; 3, first groove; 4, second groove; 5, accommodating chamber; 6, locking structure; 7, first connecting piece; 8, slot; 9, circular ring; 10, spring; 11, operating part; 12, fixing rod; 13, connecting rod; 14, limiting plate; 15, first cylindrical rod; 16, second cylindrical rod; 17, circular rod; 18, puncture needle; 19, fixing groove; 20, blocking piece; 21, second connecting piece. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model are clearly and completely described below through specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. The utility model can also be implemented or applied through other different specific implementation methods. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. 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.

[0031] Example 1

[0032] Please refer to Figure 1-9 , a venous blood sampling device in this embodiment includes a needle holder, which includes a sleeve 1, a locking structure 6 and an operating structure; the sleeve 1 has a first end and a second end, the first end of the sleeve 1 is provided with a first channel 2, the first channel 2 is used to lock the puncture needle 18, the locking structure 6 is arranged on the inner side of the first channel 2, the locking structure 6 is movably connected with the sleeve 1, the locking structure 6 can enter the interior of the sleeve 1, the operating structure is partially arranged inside the sleeve 1, the operating structure is movably connected with the sleeve 1, the operating structure is movably connected with the locking structure 6, and the locking structure 6 can be controlled to enter the interior of the sleeve 1; after the puncture needle 18 enters the first channel 2 of the sleeve 1, the locking structure 6 automatically locks the puncture needle 18, after the blood sampling is completed, the adjusting operation structure can control the locking structure 6 to retract and enter the interior of the sleeve 1, the puncture needle 18 can fall in the first channel 2, there is no need to manually twist the puncture needle 18, the risk of puncture is reduced, and the operation is more convenient.

[0033] The second end of the sleeve 1 is hollow, and the vacuum blood collector can extend into the interior. The first channel 2 in the sleeve 1 is connected to the second end of the sleeve 1, and the second end of the sleeve 1 is used to place a vacuum blood collection tube for blood collection.

[0034] A first groove 3 is arranged on the inner side surface of the first channel 2 of the sleeve 1 , and two first grooves 3 are arranged in mirror image.

[0035] Optionally, the first groove 3 is a rectangular groove.

[0036] A second groove 4 is arranged below the first groove 3, and an accommodating cavity 5 is arranged below the second groove 4. Two openings are arranged in mirror image on the sleeve 1 outside the accommodating cavity 5, and the opening direction is the same as that of the first groove 3. The second groove 4 and the accommodating cavity 5 are used to place the operating structure.

[0037] Please refer to Figure 2-6 , this embodiment adds the following technical features: (the locking structure 6 is specifically set as follows): the locking structure 6 is set as a rectangular block, the rectangular block is arranged in the first groove 3, and an inclined surface is set on the side of the rectangular block close to the first channel 2, and the inclined surface faces the first end of the sleeve 1; the above-mentioned setting ensures that after the puncture needle 18 is inserted, it can be squeezed with the inclined surface to force the rectangular block to enter the first groove 3; a first connecting piece 7 is set at the bottom of the locking structure 6, and a slot 8 is set on the first connecting piece 7; the length direction of the slot 8 is perpendicular to the movement direction of the locking structure 6.

[0038] A circular ring member 9 is arranged on the inner side surface of the first groove 3, and the circular ring member 9 is fixedly connected in the first groove 3. A spring 10 is arranged in the circular ring member 9, and the spring 10 is located between the inner side surface of the first groove 3 and the inner side surface of the locking structure 6. At this time, the spring 10 is in a compressed state and can push part of the locking structure 6 out of the first groove 3.

[0039] Please refer to Figure 2 , 4-5, 7-8, this embodiment adds the following technical features: (the operating structure is specifically set as follows): the operating structure includes an operating part 11, a fixed rod 12 and a connecting rod 13; the operating part 11 is fixedly connected to the first end of the fixed rod 12, and the second end of the fixed rod 12 is movably connected to the connecting rod 13.

[0040] The operating portion 11 is cylindrical in shape. A limiting plate 14 is disposed at the bottom of the operating portion 11 . The limiting plate 14 is fixedly connected to the operating portion 11 . The limiting plate 14 is circular in shape. The diameter of the limiting plate 14 is greater than the diameter of the operating portion 11 .

[0041] A first cylindrical groove is mirror-imaged on the outer side of the sleeve 1, and a second cylindrical groove is arranged inside the first cylindrical groove; the operating part 11 is arranged in the first cylindrical groove, and the limiting plate 14 is arranged in the second cylindrical groove, and the operating part 11 can move in the first cylindrical groove.

[0042] A third groove is provided at the first end of the connecting rod 13, a first cylindrical rod 15 is provided in the third groove, and the first cylindrical rod 15 is provided in the slot 8 on the first connecting member 7; a second connecting member 21 is provided at the second end of the connecting rod 13, and a slot 8 is provided on the second connecting member 21. A fourth groove is provided at the second end of the fixing rod 12, a second cylindrical rod 16 is provided in the fourth groove, and the second cylindrical rod 16 is provided in the slot 8 on the second connecting member 21. A through hole is provided in the middle of the connecting rod 13, and a round rod 17 is provided in the accommodating chamber 5, the round rod 17 is perpendicular to the connecting rod 13, the round rod 17 is adapted to the through hole, the round rod 17 passes through the through hole, and the two ends of the round rod 17 are fixedly connected to the inner wall of the accommodating chamber 5 of the sleeve 1; the above arrangement ensures that the connecting rod 13 can rotate along the round rod 17.

[0043] The venous blood collector also includes a puncture needle 18, which includes a needle head, a fixing part and a rubber part. The needle head, the fixing part and the rubber part are fixedly connected in sequence. A fixing groove 19 is arranged on the fixing part. The width of the fixing groove 19 gradually increases from top to bottom. The locking structure 6 can be stuck in the fixing groove 19 to achieve fixation.

[0044] In some embodiments, a baffle 20 is provided on the upper part of the fixed part. The baffle 20 is circular. When the baffle 20 contacts the upper part of the sleeve 1, it can maintain the position of the fixed part and prevent the fixed part from continuing to move downward. When the baffle 20 contacts the upper surface of the sleeve 1, the locking structure 6 is just stuck in the fixing groove 19, ensuring that the fixed part cannot move upward, thereby achieving the fixation of the puncture needle 18.

[0045] When in use, the rubber part of the puncture needle 18 is inserted into the first channel 2 of the sleeve 1 until the fixed part is stuck on the locking structure 6 in the first channel 2. The medical staff operates the sleeve 1 to puncture the arm of the person whose blood is being collected. After the puncture is completed, a vacuum blood collection tube is inserted into the lower part of the sleeve 1 to collect blood. After the collection is completed, the needle is withdrawn from the arm of the person whose blood is being collected; the sleeve 1 is moved to the upper part of the sharp instrument box, and the operating part 11 is pressed. The operating part 11 drives the fixing rod 12 to move, drives the second end of the connecting rod 13 to move, and the first end of the connecting rod 13 moves in the opposite direction, driving the locking structure 6 to shrink into the first groove 3. At this time, the puncture needle 18 can fall into the sharp instrument box under the action of gravity.

[0046] The above-mentioned embodiments are only used to understand the present invention. It should be noted that, for those skilled in the art, several improvements can be made to the present invention without departing from the principle of the present invention, and these improvements will also fall within the scope of protection of the claims of the present invention.

Claims

1. A venous blood sampling device, characterized in that: It includes a needle holder, which includes a sleeve, a locking structure and an operating structure; the sleeve has a first end and a second end, the first end of the sleeve is provided with a first channel, the first channel is used to lock the puncture needle, the locking structure is arranged on the inner side of the first channel, the locking structure is movably connected to the sleeve, the locking structure can enter the interior of the sleeve, the operating structure is partially arranged inside the sleeve, the operating structure is movably connected to the sleeve, the operating structure is movably connected to the locking structure, and can control the locking structure to enter the interior of the sleeve; after the puncture needle enters the first channel of the sleeve, the locking structure automatically locks the puncture needle.

2. The venous blood sampling device according to claim 1, characterized in that: The second end of the sleeve is hollow, and the first channel in the sleeve is connected to the second end of the sleeve; a first groove is arranged on the inner side surface of the first channel of the sleeve, and two first grooves are arranged in a mirror image.

3. The venous blood sampling device according to claim 2, characterized in that: A second groove is arranged below the first groove, a receiving cavity is arranged below the second groove, two openings are arranged in mirror image on the sleeve outside the receiving cavity, and the direction of the openings is the same as that of the first groove.

4. The venous blood sampling device according to claim 2, characterized in that: The locking structure is configured as a rectangular block, the rectangular block is arranged in the first groove, a slope is provided on the side of the rectangular block close to the first channel, and the slope faces the first end of the sleeve.

5. The venous blood sampling device according to claim 4, characterized in that: A circular ring is arranged on the inner side of the first groove, and the circular ring is fixedly connected in the first groove. A spring is arranged in the circular ring, and the spring is located between the inner side of the first groove and the inner side of the locking structure, and the spring is in a compressed state.

6. The venous blood sampling device according to claim 3, characterized in that: The operating structure includes an operating part, a fixed rod and a connecting rod; the operating part is fixedly connected to the first end of the fixed rod, and the second end of the fixed rod is movably connected to the connecting rod; the operating part is cylindrical in shape, and a limit plate is arranged at the bottom of the operating part, the limit plate is fixedly connected to the operating part, the limit plate is circular in shape, and the diameter of the limit plate is larger than the diameter of the operating part.

7. The venous blood sampling device according to claim 6, characterized in that: A first cylindrical groove is mirrored on the outer side surface of the sleeve, and a second cylindrical groove is arranged inside the first cylindrical groove; the operating part is arranged in the first cylindrical groove, and the limiting plate is arranged in the second cylindrical groove, and the operating part can move in the first cylindrical groove; a third groove is arranged at the first end of the connecting rod, and a first cylindrical rod is arranged in the third groove, and the first cylindrical rod is arranged in the slot hole on the first connecting member; a second connecting member is arranged at the second end of the connecting rod, and a slot hole is arranged on the second connecting member.

8. The venous blood sampling device according to claim 7, characterized in that: A fourth groove is arranged at the second end of the fixing rod, a second cylindrical rod is arranged in the fourth groove, and the second cylindrical rod is arranged in the slot hole on the second connecting member.

9. The venous blood sampling device according to claim 6, characterized in that: A through hole is arranged in the middle of the connecting rod, and a round rod is arranged in the accommodating cavity. The round rod is perpendicular to the connecting rod and is adapted to the through hole. The round rod passes through the through hole, and both ends of the round rod are fixedly connected to the inner wall of the accommodating cavity of the sleeve.

10. The venous blood sampling device according to any one of claims 1 to 9, characterized in that: It also includes a puncture needle, which includes a needle head, a fixing part and a rubber part. The needle head, the fixing part and the rubber part are fixedly connected in sequence. A fixing groove is arranged on the fixing part, and the width of the fixing groove gradually increases from top to bottom. A baffle is arranged on the upper part of the fixing part, and the baffle is circular. When the baffle contacts the upper part of the sleeve, the position of the fixing part can be maintained. When the baffle contacts the upper surface of the sleeve, the locking structure is just stuck in the fixing groove.

Images