Disposable safe hemostix
By employing a connection mechanism consisting of a sleeve, retaining ring, and sealing ring in the blood collection device, the problem of unstable connection between the blood collection needle and the needle holder is solved, achieving stable connection and sealing, thus ensuring safety and ease of operation.
Patent Information
- Application Number
- CN202423158298.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-20
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-12-20
AI Technical Summary
The connection between the existing blood collection needle and the needle holder is unstable and easily separates, causing the collected blood to be exposed to the outside environment, which poses a safety hazard.
The connection mechanism includes a sleeve, a retaining ring, and a sealing ring. The connection between the needle holder body and the blood collection needle body is more stable through threaded connection and compression of the retaining ring. Limiting blocks and elastic elements are set to enhance the stability and sealing of the connection.
This design achieves a stable connection between the needle holder and the blood collection needle, preventing separation, ensuring the safety of medical personnel, and improving the sealing of the connection and ease of operation.
Smart Images
Figure CN223873945U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of medical apparatus and instruments, and specifically to a disposable safety blood collector. BACKGROUND
[0002] The blood collection device is mainly used for collecting venous blood samples of patients, and provides clinical diagnosis and treatment basis for doctors through blood sample analysis.
[0003] The blood collection needle and the needle holder used in the prior art are of split type design, the connection end of the blood collection needle is directly pushed into the connecting port of the needle holder, and the connection is maintained by cooperation of the two, the connection mode has the problem of unstable connection, and the blood collection needle and the needle holder are prone to separation during use of medical staff, which causes the collected blood to be exposed to the external environment and causes safety hazards. UTILITY MODEL CONTENT
[0004] The utility model provides a disposable safety blood collector, the needle holder body and the blood collection needle body are connected by the connecting mechanism, the needle holder body and the blood collection needle body are more stable in connection, the blood collection needle body and the needle holder body do not separate, thereby guaranteeing the safety of medical staff, and the specific implementation mode is as follows:
[0005] The disposable safety blood collector includes a needle holder body with a connecting pipe, a blood collection needle body with a plug-in pipe and a connecting mechanism for connecting the connecting pipe and the plug-in pipe, the connecting mechanism includes a sleeve provided on the plug-in pipe and threadedly connected with the connecting pipe, a clamping ring and a sealing ring respectively sleeved in the sleeve, the sealing ring is sleeved on the blood collection needle body and located between the connecting pipe and the plug-in pipe, the clamping ring is arranged at the bottom of the sealing ring, the plug-in pipe is plugged into the connecting pipe and rotates the sleeve, drives the sealing ring to extrude the clamping ring, so that the clamping ring clamps the plug-in pipe, and locking operation of the needle holder body and the blood collection needle body is realized.
[0006] As a further scheme of the utility model, the clamping ring is of annular structure with an open seam, a limiting clamping block is arranged on the clamping ring, the limiting clamping block is an arc-shaped tooth block inclined to the inner circle of the clamping ring, the sealing ring extrudes the clamping ring, so that the limiting clamping block is clamped on the plug-in pipe.
[0007] As a further scheme of the utility model, the limiting clamping block is provided with a plurality of limiting clamping blocks, and the plurality of limiting clamping blocks are arranged at equal intervals along the circumferential direction of the clamping ring.
[0008] As a further scheme of the utility model, an elastic member is arranged in the sleeve, the elastic member is sleeved on the sealing ring, and the two ends of the elastic member abut against the sleeve and the connecting pipe respectively.
[0009] As a further scheme of the utility model, the connecting pipe comprises a first stepped pipe, the first stepped pipe is arranged axially on the connecting pipe, and the plug-in pipe is sleeved in the first stepped pipe, so that the channel of the connecting pipe and the channel of the plug-in pipe are communicated.
[0010] As a further scheme of the utility model, the connecting pipe further comprises a second stepped pipe, the second stepped pipe is arranged at the bottom of the first stepped pipe, the sealing ring and the clamping ring are sleeved in the second stepped pipe, and the second stepped pipe is screwed with the sleeve.
[0011] As a further scheme of the utility model, the outer ring of the connecting pipe is arranged as external threads, and the inner ring of the sleeve is arranged as internal threads matched with the external threads.
[0012] As a further scheme of the utility model, the connecting pipe and the sleeve are provided with locking mechanisms, the locking mechanisms comprise stop structures arranged on the connecting pipe and limiting grooves arranged on the sleeve, and the stop structures and the limiting grooves are matched in the connected state of the connecting pipe and the sleeve.
[0013] As a further scheme of the utility model, the stop structures comprise elastic racks arranged longitudinally on the connecting pipe and grooves arranged on the connecting pipe, and the elastic racks are elastically arranged on the grooves.
[0014] As a further scheme of the utility model, the elastic racks are arranged at the middle part of the grooves and divide the grooves into first grooves and second grooves, the rear tooth tips are formed at the intersection of the elastic racks and the first grooves, the rear tooth tips protrude outward on the outer diameter of the threads of the connecting pipe, the rear tooth tips are opposite to the screwing direction of the threads, the tooth tips are formed at the intersection of the elastic racks and the outer diameter of the second grooves, and the tooth tips are at a certain distance from the second grooves.
[0015] Due to the adoption of the above technical scheme, the utility model has the beneficial technical effects that:
[0016] 1. The needle holder body and the blood taking needle body are connected by the connecting mechanism, so that the connection of the needle holder body and the blood taking needle body is more stable, the blood taking needle body and the needle holder body cannot be separated, and the safety of medical staff is ensured.
[0017] 2. The sealing ring is arranged between the plug-in pipe of the blood taking needle body and the connecting pipe of the needle holder body, the sealing ring is connected at the joint of the plug-in pipe and the connecting pipe through the sleeve, and the connection sealing property of the blood taking needle body and the needle holder body is ensured.
[0018] 3. The utility model has simple structure and convenient operation, the stop structure and the limiting groove are matched after the sleeve and the connecting pipe are screwed, so that the internal threads of the sleeve or the external threads of the connecting pipe are prevented from rotating, and the self-locking function is achieved. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 It is the structure schematic view of the disposable safety blood collector in the embodiment of the utility model;
[0020] Figure 2 It is the sectional view of the disposable safety blood collector in the embodiment of the utility model;
[0021] Figure 3 It is the structure schematic view of the clamping ring in the embodiment of the utility model;
[0022] Figure 4 It is the local schematic view of the connecting pipe in the embodiment of the utility model;
[0023] Figure 5 It is the plan view of the connecting pipe in the embodiment of the utility model;
[0024] Figure 6 It is the structure schematic view of the sleeve in the embodiment of the utility model;
[0025] Figure 7 It is the structure schematic view of the sleeve in the embodiment of the utility model; Figure 6
[0026] Figure 8 It is the state view after installation of the disposable safety blood collector in the embodiment of the utility model;
[0027] Figure 9 It is the structure schematic view of the blood collecting tube in the embodiment of the utility model.
[0028] Explanation of reference signs:
[0029] 1, needle holder body, 2, connecting pipe, 3, sleeve, 4, plug-in pipe, 5, clamping ring, 6, sealing ring, 7, spring, 8, blood collecting needle body,
[0030] 21, first step pipe, 22, second step pipe,
[0031] 221, first groove, 222, rear tooth tip, 223, elastic rack, 224, tooth tip, 225, second groove,
[0032] 31, limiting groove,
[0033] 311, first circular arc,
[0034] 51, limiting clamping block,
[0035] 81, blood collecting tube. Embodiment
[0036] The embodiment of the utility model will be described below in combination with the drawings:
[0037] It should be noted that the structure, proportion, size and the like shown in the drawings of the present application are only used to cooperate with the disclosed content, so that those skilled in the art can understand and read, and are not used to limit the implementation of the present application. Any modification of the structure, change of the proportion relationship or adjustment of the size, which does not affect the function and purpose of the present application, should still fall within the scope of the disclosed technology.
[0038] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" in the present application are only for the convenience of clear description, and are not used to limit the scope of the present application. The change or adjustment of the relative relationship does not change the technical content.
[0039] Embodiment 1, in combination Figures 1 to 9 As shown in the drawings, the present embodiment provides a disposable safety blood collector, which comprises a needle holder body 1 with a connecting pipe 2, a blood collection needle body 8 with a plug-in pipe 4, and a connecting mechanism for connecting the connecting pipe 2 and the plug-in pipe 4. The connecting mechanism comprises a sleeve 3 arranged on the plug-in pipe 4 and threadedly connected with the connecting pipe 2, and a clamping ring 5 and a sealing ring 6 respectively sleeved in the sleeve 3. The sealing ring 6 is sleeved on the blood collection needle body 8 and located between the connecting pipe 2 and the plug-in pipe 4. The clamping ring 5 is arranged at the bottom of the sealing ring 6. The plug-in pipe 4 is plugged into the connecting pipe 2 and rotates the sleeve 3, which drives the sealing ring 6 to press the clamping ring 5, so that the clamping ring 5 clamps the plug-in pipe 4, thereby realizing the locking operation of the needle holder body 1 and the blood collection needle body 8.
[0040] In specific application, the sealing ring 6 and the clamping ring 5 are sequentially sleeved on the plug-in pipe 4 and located in the sleeve 3. The clamping ring 5 is located at the top of the sealing ring 6. The plug-in pipe 4 is inserted into the connecting port of the connecting pipe 2. At this time, the clamping ring 5 is located between the connecting port of the connecting pipe 2 and the plug-in pipe 4. The sleeve 3 is rotated, and the sleeve 3 is tightened with the connecting pipe 2 to generate a pressing force on the sealing ring 6. The sealing ring 6 transmits the pressure to the clamping ring 5 to press the clamping ring 5 to clamp the plug-in pipe 4, thereby realizing the connection between the connecting pipe 2 and the plug-in pipe 4, and further realizing the connection between the blood collection needle body 8 and the needle holder body 1. The sleeve 3 is provided with an arc-shaped groove corresponding to the sealing ring 6. The bottom of the sealing ring 6 is provided with a transition fillet corresponding to the arc-shaped groove. The transition fillet is accommodated in the arc-shaped groove, so that the sealing ring 6 is more stably connected to the sleeve 3. The sealing ring 6 can better ensure the sealing between the connecting pipe 2 and the plug-in pipe 4, prevent the blood collector from being exposed during use, and improve the safety.
[0041] Specifically, the collar 5 is an annular structure with an open seam, a limiting block 51 is arranged on the collar 5, the limiting block 51 is an arc-shaped tooth block inclined to the inner circle of the collar 5, and the sealing ring 6 is extruded on the collar 5, so that the limiting block 51 is clamped on the plug-in pipe 4. The collar 5 is made of stainless steel, and the sealing ring 6 is extruded when the sleeve 3 is screwed with the connecting pipe 2. The sealing ring 6 transmits the pressure to the collar 5, the open seam of the collar 5 is contracted, the plug-in pipe 4 is clamped by the limiting block 51, and the locking connection between the connecting pipe 2 and the plug-in pipe 4 is realized.
[0042] Preferably, the limiting block 51 is provided with a plurality of limiting blocks 51, and the plurality of limiting blocks 51 are arranged at equal intervals along the circumferential direction of the collar 5. In the embodiment, the limiting block 51 is provided with 12 limiting blocks 51, and the 12 limiting blocks 51 are arranged at equal intervals along the circumferential direction of the collar 5, which further clamps the plug-in pipe 4. The number of limiting blocks 51 can be selected according to actual conditions.
[0043] Specifically, the sleeve 3 is provided with an elastic member, the elastic member is sleeved on the sealing ring 6, and the two ends of the elastic member abut against the sleeve 3 and the connecting pipe 2 respectively. Preferably, the elastic member is provided as a spring 7, the bottom end of the spring 7 is connected with the sleeve 3, the top end of the spring 7 abuts against the connecting pipe 2 when the sleeve 3 is screwed with the connecting pipe 2, and the spring 7 is compressed to generate a reaction force after the sleeve 3 is screwed with the connecting pipe 2, thereby providing a pre-tightening force, so that the connection between the sleeve 3 and the connecting pipe 2 is more stable.
[0044] Specifically, the connecting pipe 2 comprises a first stepped pipe 21, the first stepped pipe 21 is arranged axially on the connecting pipe 2, and the plug-in pipe 4 is sleeved in the first stepped pipe 21, so that the channel of the connecting pipe 2 and the channel of the plug-in pipe 4 are communicated. The inner diameter of the first stepped pipe 21 is the same as the outer diameter of the plug-in pipe 4, the plug-in pipe 4 is axially inserted into the first stepped pipe 21, so that the channel of the connecting pipe 2 and the channel of the plug-in pipe 4 are communicated, thereby realizing the flow and transportation of blood.
[0045] Specifically, the connecting pipe 2 further comprises a second stepped pipe 22, the second stepped pipe 22 is arranged at the bottom of the first stepped pipe 21, the sealing ring 6 and the collar 5 are sleeved in the second stepped pipe 22, and the second stepped pipe 22 is threadedly connected with the sleeve 3. The second stepped pipe 22 is used for connecting with the sleeve 3, the inner wall of the second stepped pipe 22 abuts against the sealing ring 6 and the collar 5, and the collar 5 is located between the second stepped pipe 22 and the sealing ring 6, so that the connection is more compact.
[0046] Specifically, the outer ring of the connecting pipe 2 is provided with external threads, and the inner ring of the sleeve 3 is provided with internal threads matched with the external threads. The connecting pipe 2 and the sleeve 3 are provided with locking mechanisms, which include a stop structure provided on the connecting pipe 2 and a limiting groove 31 provided on the sleeve 3. When the connecting pipe 2 and the sleeve 3 are connected, the stop structure cooperates with the limiting groove 31. When the sleeve 3 is screwed with the connecting pipe 2, the stop structure enters the limiting groove 31 and cooperates with the limiting groove 31, thereby preventing the sleeve 3 or the connecting pipe 2 from being unscrewed.
[0047] Specifically, the stop structure includes an elastic rack 223 longitudinally provided on the connecting pipe 2 and a groove provided on the connecting pipe 2, and the elastic rack 223 is elastically arranged in the groove. When the sleeve 3 is screwed with the connecting pipe 2, the elastic rack 223 is rotated and rubbed with the internal threads of the sleeve 3, so that the elastic rack 223 moves in the groove. After the sleeve 3 is screwed with the connecting pipe 2, the elastic rack 223 enters the limiting groove 31 and cooperates with the limiting groove 31, thereby preventing the sleeve 3 or the connecting pipe 2 from being unscrewed.
[0048] Specifically, the elastic rack 223 is arranged in the middle of the groove and divides the groove into a first groove 221 and a second groove 225. The elastic rack 223 and the first groove 221 form a rear tooth tip 222 at the intersection, which protrudes outward from the outer diameter of the threads of the connecting pipe 2. The rear tooth tip 222 is opposite to the direction of screwing. The elastic rack 223 and the outer diameter of the second groove 225 form a tooth tip 224, and the tooth tip 224 is a certain distance away from the second groove 225. When the connecting pipe 2 is screwed with the sleeve 3, the elastic rack 223 is embedded in the limiting groove 31, thereby realizing the locking connection of the connecting pipe 2 and the sleeve 3.
[0049] Specifically, the limiting groove 31 and the inner diameter of the threads are connected by a first circular arc 311, and the rear tooth tip 222 of the elastic rack 223 is provided with a second circular arc corresponding to the first circular arc 311. When the connecting pipe 2 and the sleeve 3 are loosened, the tooth tip 224 abuts against the second groove 225, and the elastic rack 223 is retracted into the groove, thereby loosening the connecting pipe 2 and the sleeve 3, and further realizing the disassembly of the connecting pipe 2 and the sleeve 3, which is simple and convenient to operate.
[0050] The utility model discloses a working principle is, hold needle ware body 1 with blood taking needle body 8 connection, blood taking needle body 8's blood taking tube 81 insert hold needle ware body 1, sealing washer 6 and the ring 5 are in order on the spigot 4, and are located in the sleeve 3, and the ring 5 is located at the top of sealing washer 6, and the spigot 4 inserts the connecting port of connecting pipe 2, at this moment, the ring 5 is located between the connecting port of connecting pipe 2 and the spigot 4, and rotate the sleeve 3, and the sleeve 3 is screwed with connecting pipe 2 and generates extrusion pressure to sealing washer 6 when, and sealing washer 6 will pass on the pressure to the ring 5, and the ring 5 is pressed and holds the spigot 4, to realize the connection between connecting pipe 2 and the spigot 4, and further realize the connection between blood taking needle body 8 and hold needle ware body 1, and at the same time, the elastic rack 223 is embedded in the limiting slot 31, to prevent connecting pipe 2 or sleeve 3 from rotating, and further make the connection between connecting pipe 2 and sleeve 3 more stable.
[0051] Many other changes and modifications can be made to the application without departing from the spirit and scope of the application. It is to be understood that the application is not limited to the specific embodiments described herein, and the scope of the application is defined by the appended claims.
Claims
1. A single-use safety blood lancet, characterized in that, The needle holder body (1) comprises a connecting pipe (2), a blood taking needle body (8) comprising a plug-in pipe (4), and a connecting mechanism for connecting the connecting pipe (2) and the plug-in pipe (4), the connecting mechanism comprises a sleeve (3) arranged on the plug-in pipe (4) and threadedly connected with the connecting pipe (2), a clamping ring (5) and a sealing ring (6) arranged in the sleeve (3) respectively, the sealing ring (6) is arranged on the blood taking needle body (8) and located between the connecting pipe (2) and the plug-in pipe (4), the clamping ring (5) is arranged at the bottom of the sealing ring (6), the plug-in pipe (4) is plugged into and rotates the sleeve (3), driving the sealing ring (6) to press the clamping ring (5), so that the clamping ring (5) clamps the plug-in pipe (4), thereby realizing the locking operation of the needle holder body (1) and the blood taking needle body (8).
2. The safety lancet of claim 1 wherein, The clamping ring (5) is an annular structure with an open slit, a limiting clamping block (51) is arranged on the clamping ring (5), the limiting clamping block (51) is an arc-shaped tooth block inclined to the inner circle of the clamping ring (5), the sealing ring (6) presses the clamping ring (5), so that the limiting clamping block (51) is clamped on the plug-in pipe (4).
3. The safety lancet of claim 2 wherein, A plurality of limiting clamping blocks (51) are arranged at equal intervals along the circumferential direction of the clamping ring (5).
4. The safety lancet of claim 1 wherein, An elastic member is arranged in the sleeve (3), the elastic member is arranged on the sealing ring (6), and the two ends of the elastic member abut against the sleeve (3) and the connecting pipe (2) respectively.
5. The safety lancet of claim 1 wherein, The connecting pipe (2) comprises a first stepped pipe (21), the first stepped pipe (21) is arranged axially on the connecting pipe (2), and the plug-in pipe (4) is arranged in the first stepped pipe (21), so that the channel of the connecting pipe (2) and the channel of the plug-in pipe (4) are communicated.
6. The safety lancet of claim 5 wherein, The connecting pipe (2) further comprises a second stepped pipe (22), the second stepped pipe (22) is arranged at the bottom of the first stepped pipe (21), the sealing ring (6) and the clamping ring (5) are arranged in the second stepped pipe (22), and the second stepped pipe (22) is threadedly connected with the sleeve (3).
7. The safety lancet of claim 1 wherein, The outer circle of the connecting pipe (2) is provided with external threads, and the inner circle of the sleeve (3) is provided with internal threads matched with the external threads.
8. The safety lancet of claim 7 wherein, A locking mechanism is arranged on the connecting pipe (2) and the sleeve (3), the locking mechanism comprises a stop structure arranged on the connecting pipe (2) and a limiting groove (31) arranged on the sleeve (3), and the stop structure and the limiting groove (31) are matched in the connected state of the connecting pipe (2) and the sleeve (3).
9. The safety lancet of claim 8 wherein, The stop structure comprises an elastic rack (223) arranged longitudinally on the connecting pipe (2) and a groove arranged on the connecting pipe (2), and the elastic rack (223) is elastically arranged in the groove.
10. The safety lancet of claim 9 wherein, The elastic rack (223) is arranged in the middle of the groove and divides the groove into a first groove (221) and a second groove (225). The elastic rack (223) and the first groove (221) intersect to form a rear tooth tip (222), which protrudes outward on the outer diameter of the thread of the connecting pipe (2). The rear tooth tip (222) is opposite to the direction of thread rotation. The elastic rack (223) and the outer diameter of the second groove (225) intersect to form a tooth tip (224), which is a certain distance from the second groove (225).