CN221949822U - Blood collection components - Google Patents

Abstract

The utility model discloses a blood sampling assembly, which relates to the technical field of medical blood sampling. A blood sampling assembly suitable for connecting with a hemodialysis tube for blood sampling is provided. The blood sampling assembly includes a needle holder and a blood collector, and the blood collector includes a blood sampling connector. The utility model sets the blood sampling connector to match the hemodialysis tube connector, and the blood sampling connector is connected to the hemodialysis tube connector, and then the blood sampling tube puncture needle is used to pierce the rubber sleeve and pierce the blood sampling tube to perform blood sampling. In addition, the utility model improves the connection method between the needle holder and the blood collector. After the blood sampling is completed, the needle holder is held to be arranged vertically, and the control rod is pressed to drive the positioning rod to move out of the jack, and the blood collector automatically slides out of the first bottom plate hole, and the removal of the blood collector is completed. It can be seen that through this improvement, the connection and removal operations of the needle holder and the blood collector are simpler, and when the blood collector is removed, it is not necessary to touch the blood collector, so as to avoid contact with the blood attached to the blood collector.

Description

Blood collection components

Technical Field

The utility model relates to the technical field of medical blood sampling, in particular to a blood sampling component.

Background Art

Commonly used items for blood collection in hospitals include blood collection needles, vacuum blood collection tubes and needle holders. The blood collection needle includes a catheter, a vascular puncture needle, a blood collection tube puncture needle and a rubber sleeve. The vascular puncture needle and the blood collection tube puncture needle are respectively connected to the two ends of the catheter, and the rubber sleeve is sleeved on the blood collection tube puncture needle. When collecting blood, the vascular puncture needle pierces the blood vessel, and the blood collection tube puncture needle pierces the rubber sleeve and pierces the vacuum blood collection tube. The vacuum blood collection tube relies on its own negative pressure to suck blood, and the blood collection is completed. The needle holder can be connected to the blood collection needle. The needle holder is set outside the blood collection tube puncture needle and the rubber sleeve. Its function is to facilitate the hand-held blood collection needle to perform the vacuum blood collection tube puncture operation, and it also has a protective effect, which can prevent the blood collection tube puncture needle from stabbing the operator. The connection method between the needle holder and the blood collection needle is generally a threaded connection. The traditional blood collection method of using a syringe to pierce the blood vessel and then draw blood is also used.

For patients undergoing hemodialysis, since the hemodialysis tube is already inserted into the patient's blood vessels, blood can be collected through the hemodialysis tube connector, which does not require puncturing the patient and reduces the patient's pain. However, since the existing blood collection needle does not match the hemodialysis tube connector, it is generally inconvenient to use a syringe with the needle removed and the syringe nipple inserted into the hemodialysis tube connector to draw blood. Therefore, the applicant invented a blood collection component suitable for connecting to a hemodialysis tube for blood collection.

Utility Model Content

The technical problem to be solved by the utility model is to provide a blood sampling component suitable for being connected with a hemodialysis tube for blood sampling.

The technical solution adopted to solve the above problems is: the blood sampling assembly includes a detachably connected needle holder and a blood collector; the needle holder includes a needle holder body, a positioning structure and a spring; the needle holder body includes a sleeve and a bottom plate, the bottom plate is connected to one end of the sleeve, and the bottom plate is provided with a bottom plate protrusion, a first bottom plate hole, a second bottom plate hole and a third bottom plate hole, the first bottom plate hole is arranged along the axial direction of the sleeve and corresponds to the position of the bottom plate protrusion, the second bottom plate hole and the third bottom plate hole are both arranged on the bottom plate protrusion and are perpendicular to the axial direction of the sleeve, the second bottom plate hole is located next to the first bottom plate hole, and the third bottom plate hole is connected to the first bottom plate hole; the positioning structure includes a control rod, a positioning rod, a connecting rod and a rod end plate, the control rod passes through the second bottom plate hole, the two ends of the control rod are respectively connected to the connecting rod and the rod end plate, the positioning rod passes through the third bottom plate hole and is connected to the connecting rod; the spring abuts against the bottom plate protrusion and pushes the rod end plate outward;

The blood collector includes a blood collection tube puncture needle, a connecting shaft and a blood collection connector which are coaxially arranged in sequence; the blood collection tube puncture needle is covered with a rubber sleeve which is connected to the connecting shaft; the connecting shaft includes a first connecting portion which has a socket, the connecting shaft is inserted into a first bottom plate hole, the first connecting portion cooperates with the first bottom plate hole, the blood collection tube puncture needle and the rubber sleeve are located in the sleeve, and the positioning rod is inserted into the socket; the blood collection connector is used to connect to a hemodialysis tube connector; when the control lever is pressed, the positioning rod exits the socket.

Furthermore, a positioning flange is provided on the connecting shaft, and the positioning flange is fitted with the protrusion of the bottom plate.

Furthermore, the cross-sectional shapes of the first connecting portion and the first bottom plate hole are both rectangular.

Furthermore, the first connecting portion is provided with two symmetrically arranged insertion holes, and the positioning rod is inserted into any one of the insertion holes.

Furthermore, the blood collection assembly includes a blood collection puncture needle, which includes a puncture needle, a catheter and a puncture needle connector. The puncture needle and the puncture needle connector are respectively connected to the two ends of the catheter, and the puncture needle connector is detachably connected to the blood collection connector.

Furthermore, the connecting shaft includes a second connecting portion, and the second connecting portion is provided with a connecting thread.

The beneficial effects of the utility model are as follows: 1. The utility model sets the blood sampling connector to match the hemodialysis tube connector, the blood sampling connector is connected to the hemodialysis tube connector, and then the blood sampling tube puncture needle pierces the rubber sleeve and pierces the blood sampling tube to perform blood sampling. Therefore, the utility model has the beneficial effect of being suitable for connecting with the hemodialysis tube for blood sampling, and is convenient for blood sampling in this occasion.

2. Although the improvement of setting the blood sampling connector to match the hemodialysis tube connector can achieve the effect of being suitable for connecting to the hemodialysis tube for blood sampling, it is not very suitable for use with the existing needle holder, because the existing needle holder is connected to the blood sampling needle by a threaded connection. To install and remove the needle holder, you need to hold the blood sampling connector and rotate it to connect or separate it from the needle holder. After blood sampling, the blood sampling connector may be attached to the patient's blood, and contact may cause disease transmission.

The utility model further improves the needle holder and the blood collector, so that when the needle holder is connected to the blood collector, the control rod is pressed to drive the positioning rod to move out of the first bottom plate hole; then the connecting shaft is inserted into the first bottom plate hole, and the control rod is released. Under the action of the spring, the positioning structure is reset, and the positioning rod is inserted into the socket to complete the connection between the needle holder and the blood collector. In this way, the blood collector will not move relative to each other. After the blood collection is completed, the needle holder is held vertically, and the control rod is pressed to drive the positioning rod to move out of the socket, and the blood collector automatically slides out of the first bottom plate hole, completing the removal of the blood collector. It can be seen that through this improvement, the connection and removal operations of the needle holder and the blood collector are simpler, and when removing the blood collector, there is no need to touch the blood collector, which can avoid contact with blood attached to the blood collector, which is beneficial to avoid disease transmission.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a structural diagram of a blood sampling assembly;

Fig. 2 is a partial enlarged view of the blood collection component;

Fig. 3 is a cross-sectional view taken along line A-A of Fig. 2;

FIG4 is a structural diagram of the needle holder body;

Fig. 5 is a cross-sectional view taken along line B-B of Fig. 4;

Fig. 6 is a structural diagram of a blood sampling device;

FIG7 is a diagram showing a blood sampling assembly connected to a hemodialysis tube for blood sampling;

Marked in the figure are: blood collection device 1, blood collection tube puncture needle 11, connecting shaft 12, first connecting part 121, second connecting part 122, positioning flange 123, jack 1211, blood collection connector 13, rubber sleeve 14, needle holder 2, needle holder body 21, sleeve 211, bottom plate 212, bottom plate protrusion 2121, first bottom plate hole 2122, second bottom plate hole 2123, third bottom plate hole 2124, positioning structure 22, control rod 221, positioning rod 222, connecting rod 223, rod end plate 224, spring 23, blood collection puncture needle 3, puncture needle head 31, puncture needle connector 32, catheter 33, hemodialysis tube 4, hemodialysis tube connector 41, blood collection tube 5.

DETAILED DESCRIPTION

The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

As shown in Figures 1 to 6, the blood collection assembly includes a detachably connected needle holder 2 and a blood collector 1; the needle holder 2 includes a needle holder body 21, a positioning structure 22 and a spring 23; the needle holder body 21 includes a sleeve 211 and a bottom plate 212, the bottom plate 212 is connected to one end of the sleeve 211, and the bottom plate 212 has a bottom plate protrusion 2121, a first bottom plate hole 2122, a second bottom plate hole 2123 and a third bottom plate hole 2124, the first bottom plate hole 2122 is arranged along the axial direction of the sleeve 211 and corresponds to the position of the bottom plate protrusion 2121, the second bottom plate hole 2123 and the third bottom plate hole 2124 are both arranged on the bottom plate The second bottom plate hole 2123 is located beside the first bottom plate hole 2122, and the third bottom plate hole 2124 is connected to the first bottom plate hole 2122; the positioning structure 22 includes a control rod 221, a positioning rod 222, a connecting rod 223 and a rod end plate 224, the control rod 221 passes through the second bottom plate hole 2123, and the two ends of the control rod 221 are respectively connected to the connecting rod 223 and the rod end plate 224, the positioning rod 222 passes through the third bottom plate hole 2124 and is connected to the connecting rod 223; the spring 23 rests on the bottom plate protrusion 2121 and pushes the rod end plate 224 outward;

The blood collection device 1 includes a blood collection tube puncture needle 11, a connecting shaft 12 and a blood collection connector 13 which are coaxially arranged in sequence; a rubber sleeve 14 is sleeved on the blood collection tube puncture needle 11, and the rubber sleeve 14 is connected to the connecting shaft 12; the connecting shaft 12 includes a first connecting portion 121, and the first connecting portion 121 has a socket 1211, the connecting shaft 12 is inserted into the first bottom plate hole 2122, the first connecting portion 121 cooperates with the first bottom plate hole 2122, the blood collection tube puncture needle 11 and the rubber sleeve 14 are located in the sleeve 211, and the positioning rod 222 is inserted into the socket 1211; the blood collection connector 13 is used to connect to the hemodialysis tube connector 41; when the control rod 221 is pressed, the positioning rod 222 withdraws from the socket 1211.

The utility model sets the blood sampling connector 13 to match the hemodialysis tube connector 41, the blood sampling connector 13 is connected to the hemodialysis tube connector 41, and then the blood sampling tube puncture needle 11 pierces the rubber sleeve 14 and pierces the blood sampling tube 5 to perform blood sampling. Therefore, the utility model has the beneficial effect of being suitable for connecting with the hemodialysis tube 4 to perform blood sampling, and is convenient for blood sampling in this occasion.

By only adopting the improvement point that the blood sampling connector 13 is matched with the hemodialysis tube connector 41, although it can achieve the effect of being suitable for connecting with the hemodialysis tube 4 for blood sampling, it is not very suitable for use with the existing needle holder, because the existing needle holder is connected to the blood sampling needle by a threaded connection. To install and remove the needle holder 2, the blood sampling connector 13 must be held and rotated to connect or separate it from the needle holder 2. After blood sampling, the patient's blood may be attached to the blood sampling connector 13, and contact may cause disease transmission.

The utility model further improves the needle holder 2 and the blood collector 1. When the needle holder 2 is connected to the blood collector 1, the control rod 221 is pressed to drive the positioning rod 222 to move out of the first bottom plate hole 2122; then the connecting shaft 12 is inserted into the first bottom plate hole 2122, and the control rod 221 is released. Under the action of the spring 23, the positioning structure 22 is reset, and the positioning rod 222 is inserted into the insertion hole 1211, completing the connection between the needle holder 2 and the blood collector 1. In this way, the blood collector 1 will not move relative to each other. After the blood collection is completed, the needle holder 2 is held by hand to be set vertically, and the control rod 221 is pressed to drive the positioning rod 222 to move out of the insertion hole 1211, and the blood collector 1 automatically slides out of the first bottom plate hole 2122, completing the removal of the blood collector 1. It can be seen that through this improvement, the connection and removal operations of the needle holder 2 and the blood collector 1 are simpler, and when the blood collector 1 is removed, it is not necessary to touch the blood collector 1, which can avoid contact with the blood attached to the blood collector 1, which is conducive to avoiding disease transmission.

The control rod 221 deviates from the center of the needle holder body 21, so a rod end plate 224 is provided, and the rod end plate 224 extends to the corresponding center of the needle holder body 21. Pressing the rod end plate 224 is equivalent to pressing the control rod 221, which is more convenient. The first connecting portion 121 and the first bottom plate hole 2122 should obviously be a clearance fit.

When the connecting shaft 12 is inserted into the first bottom plate hole 2122, in order to facilitate the insertion hole 1211 and the positioning rod 222 to be aligned, it is preferred that the connecting shaft 12 has a positioning flange 123, and the positioning flange 123 fits with the bottom plate protrusion 2121. In this way, when the connecting shaft 12 is inserted into the first bottom plate hole 2122, the insertion reaches the point where the positioning flange 123 fits with the bottom plate protrusion 2121, and the insertion hole 1211 and the positioning rod 222 are aligned in the axial direction.

When the connecting shaft 12 is inserted into the first bottom plate hole 2122, in order to facilitate the insertion hole 1211 to face the positioning rod 222, the cross-sectional shapes of the first connecting portion 121 and the first bottom plate hole 2122 are preferably both rectangular. The first connecting portion 121 has two symmetrically arranged insertion holes 1211, and the positioning rod 222 is inserted into any of the insertion holes 1211.

In this way, when the connecting shaft 12 is inserted into the first bottom plate hole 2122 , the angle of the connecting shaft 12 is fixed and will not rotate, and the insertion hole 1211 and the positioning rod 222 are naturally opposite to each other.

In order to expand the scope of application of the utility model, the preferred blood collection component includes a blood collection puncture needle 3, the blood collection puncture needle 3 includes a puncture needle head 31, a catheter 33 and a puncture needle connector 32, the puncture needle head 31 and the puncture needle connector 32 are respectively connected to the two ends of the catheter 33, and the puncture needle connector 32 is detachably connected to the blood collection connector 13.

The blood sampling device 1 is used alone for blood sampling, and is suitable for blood sampling in hemodialysis. The blood sampling device 1 is used together with the blood sampling puncture needle 3 to puncture a blood vessel for blood sampling.

Furthermore, the utility model preferably includes a second connecting portion 122 on which a connecting thread is provided. Thus, when the blood collection device 1 is used together with the blood collection puncture needle 3, the existing needle holder can be connected to the blood collection device 1, specifically, the existing needle holder is threadedly connected to the second connecting portion 122, because there is no risk of disease transmission caused by contact with blood.

Claims (6)

1. A blood collection assembly, comprising a detachably connected needle holder (2) and a blood collection device (1); characterized in that: the needle holder (2) comprises a needle holder body (21), a positioning structure (22) and a spring (23); the needle holder body (21) comprises a sleeve (211) and a bottom plate (212), the bottom plate (212) is connected to one end of the sleeve (211), and the bottom plate (212) has a bottom plate protrusion (2121), a first bottom plate hole (2122), a second bottom plate hole (2123) and a third bottom plate hole (2124), the first bottom plate hole (2122) is arranged along the axial direction of the sleeve (211) and corresponds to the position of the bottom plate protrusion (2121), the second bottom plate hole (2123) and the third bottom plate hole (2124) are both arranged on the bottom plate protrusion The second bottom plate hole (2123) is located on the bottom plate protrusion (2121) and is perpendicular to the axial direction of the sleeve (211), the second bottom plate hole (2123) is located next to the first bottom plate hole (2122), and the third bottom plate hole (2124) is connected to the first bottom plate hole (2122); the positioning structure (22) includes a control rod (221), a positioning rod (222), a connecting rod (223) and a rod end plate (224), the control rod (221) passes through the second bottom plate hole (2123), the two ends of the control rod (221) are respectively connected to the connecting rod (223) and the rod end plate (224), the positioning rod (222) passes through the third bottom plate hole (2124) and is connected to the connecting rod (223); the spring (23) abuts against the bottom plate protrusion (2121) and pushes the rod end plate (224); The blood sampling device (1) comprises a blood sampling tube puncture needle (11), a connecting shaft (12) and a blood sampling connector (13) which are coaxially arranged in sequence; the blood sampling tube puncture needle (11) is covered with a rubber sleeve (14), and the rubber sleeve (14) is connected to the connecting shaft (12); the connecting shaft (12) comprises a first connecting portion (121), the first connecting portion (121) has a plug hole (1211), the connecting shaft (12) is inserted into a first bottom plate hole (2122), the first connecting portion (121) cooperates with the first bottom plate hole (2122), the blood sampling tube puncture needle (11) and the rubber sleeve (14) are located in the sleeve (211), and the positioning rod (222) is inserted into the plug hole (1211); the blood sampling connector (13) is used to connect to a hemodialysis tube connector (41); when the control rod (221) is pressed, the positioning rod (222) withdraws from the plug hole (1211). 2. The blood collection assembly according to claim 1 is characterized in that: a positioning flange (123) is provided on the connecting shaft (12), and the positioning flange (123) is in contact with the bottom plate protrusion (2121). 3. The blood collection assembly according to claim 2 is characterized in that the cross-sectional shapes of the first connecting portion (121) and the first bottom plate hole (2122) are both rectangular. 4. The blood collection assembly according to claim 3 is characterized in that: the first connecting portion (121) has two symmetrically arranged holes (1211), and the positioning rod (222) is inserted into any one of the holes (1211). 5. The blood collection assembly according to any one of claims 1 to 4 is characterized in that it includes a blood collection puncture needle (3), the blood collection puncture needle (3) includes a puncture needle head (31), a catheter (33) and a puncture needle connector (32), the puncture needle head (31) and the puncture needle connector (32) are respectively connected to the two ends of the catheter (33), and the puncture needle connector (32) is detachably connected to the blood collection connector (13). 6. The blood collection assembly according to claim 5 is characterized in that the connecting shaft (12) includes a second connecting portion (122), and the second connecting portion (122) has a connecting thread.