Blood taking needle capable of preventing blood overflow

Abstract

The utility model provides an anti-blood-overflow blood taking needle, which comprises a blood taking needle, an anti-blood-overflow blood taking needle, an anti-blood-overflow blood taking needle head and a blood taking needle head, the clamping mechanism comprises a pressing piece and a clamping piece, the clamping piece is arranged on the outer side of the hose in a sleeving mode, the pressing piece is connected to the clamping piece, and the clamping piece is driven by the pressing piece to move and clamp the hose. The problem that in the prior art, the risk that blood leaks to the external environment exists in the blood taking needle replacing process is solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an anti-bleeding blood collection needle. Background Art

[0002] A lancet is a needle used to collect venous blood and is usually used with a vacuum blood collection bottle. To use it, the needle of the lancet is first inserted into the patient's blood vessel, and then the connector of the lancet is inserted into the vacuum blood collection bottle. The negative pressure in the blood collection bottle draws the blood into the bottle.

[0003] However, in actual operation, medical staff may need to collect multiple blood tubes. During the process of changing the lancet, the connector of the lancet is briefly exposed to the outside environment. Although the connector and the lancet are separated at this time, the lancet will still move towards the connector due to inertia, which may cause blood to leak into the outside environment.

[0004] Therefore, there is still room for improvement in the existing technology. Utility Model Content

[0005] The purpose of the utility model is to provide a blood collection needle that prevents blood from leaking out to the outside environment during the replacement of the blood collection needle in the prior art.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide an anti-bleeding blood collection tube, comprising:

[0007] A blood collection needle, comprising a needle and a hose, the needle and the hose being connected;

[0008] The clamping mechanism includes a pressing member and a clamping member. The clamping member is sleeved on the outside of the hose. The pressing member is connected to the clamping member. The clamping member moves and clamps the hose under the drive of the pressing member.

[0009] Optionally, the clamping member includes an upper clamping plate and a lower clamping plate, the upper clamping plate and the lower clamping plate are arranged opposite to each other and are respectively located on the upper and lower sides of the outer surface of the hose.

[0010] Optionally, a first elastic member is provided on a side of the upper clamping plate facing away from the hose, one end of the first elastic member is fixedly connected to the upper clamping plate, and the other end is fixedly connected to the pressing member;

[0011] A second elastic member is provided on a side of the lower clamping plate facing away from the hose.

[0012] Optionally, a silicone layer is provided on the side of the upper clamping plate and the lower clamping plate in contact with the hose.

[0013] Optionally, the push member includes:

[0014] A sleeve, wherein the sleeve has an accommodating space;

[0015] A push rod, the push rod is located in the accommodation space;

[0016] A pressure rod, one end of which is connected to the first elastic member and the other end of which is connected to the push rod.

[0017] Optionally, a plurality of guide grooves are provided on the sleeve;

[0018] A plurality of first bosses are arranged on the pressure rod, and a plurality of second bosses are arranged on the top rod. The first bosses and the second bosses are both clamped in the guide grooves.

[0019] Optionally, the first boss and the second boss intersect with each other, and the intersection surfaces of the first boss and the second boss are both configured as a triangular structure.

[0020] Optionally, the clamping mechanism further includes a shell having an accommodating cavity therein and a first through hole provided on the shell for passing the hose.

[0021] Optionally, the shell includes an upper shell and a lower shell, and the upper shell and the lower shell are connected by a connecting piece.

[0022] Optionally, a second through hole is further provided on the shell, and the second through hole is used to pass the pressing member.

[0023] The beneficial effect of the anti-bleeding blood collection needle provided by this utility model lies in at least one aspect: the clamping mechanism effectively prevents blood from spilling during the blood collection process, reducing pollution and waste. Even though the connector and the blood collection needle are separated, the clamping mechanism prevents blood from spilling and contaminating the environment when the medical staff replaces the blood collection tube. This allows for more precise control of the blood collection process, ensuring that a sufficient amount of blood is collected. Reducing blood spillage reduces patient anxiety and discomfort, improving the overall blood collection experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of an anti-bleeding blood collection needle according to an embodiment of the present application;

[0026] Figure 2 yes Figure 1 A magnified view of part A in FIG;

[0027] Figure 3This is a schematic structural diagram of a clamping mechanism according to an embodiment of the present application;

[0028] Figure 4 This is an exploded view of a push member according to an embodiment of the present application;

[0029] Figure 5 It is a cross-sectional schematic diagram of a sleeve according to an embodiment of the present application.

[0030] Among them, the reference numerals in the figures are:

[0031] 10. Blood collection needle; 110. Needle; 120. Flexible tube; 20. Clamping mechanism; 210. Push member; 211. Sleeve; 2111. Guide groove; 212. Push rod; 2122. Second boss; 213. Press rod; 2131. First boss; 220. Clamping member; 221. Upper splint; 222. Lower splint; 223. First elastic member; 224. Second elastic member; 225. Silicone layer; 230. Shell; 231. Upper shell; 232. Lower shell; 233. Second through hole; 234. Connecting member; 235. First through hole. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0033] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on this technical solution. The terms "first" and "second" are only used for the purpose of convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0034] like Figure 1 、 Figure 2 as well as Figure 3As shown, this embodiment provides a blood collection needle 10 for preventing blood overflow, comprising a blood collection needle 10 and a clamping mechanism 20. The blood collection needle 10 comprises a needle 110 and a hose 120. The needle 110 is connected to the hose 120. The blood collection needle 10 is used to pierce the patient's skin for blood collection. The hose 120 is used to transmit the collected blood. The hose 120 is generally made of a flexible material. The clamping mechanism 20 comprises a push member 210 and a clamping member 220. The clamping member 220 is sleeved on the outside of the hose 120. The push member 210 is connected to the clamping member 220. The clamping member 220 moves and clamps the hose 120 under the drive of the push member 210. The push member 210 is operated by medical personnel. By pressing the push member 210, the action of the clamping member 220 is controlled to achieve clamping or loosening of the hose 120, which can effectively clamp the hose 120 and prevent blood from overflowing from the hose 120.

[0035] The operating principle of this embodiment is as follows: During the blood collection process, as blood flows through the needle 110 into the tube 120, the medical staff can control the movement of the clamping mechanism 20. Once sufficient blood has been collected or blood collection needs to be stopped, the user can press the push member 210 to move the clamping member 220 and clamp the tube 120. When the tube 120 is clamped, blood flow is blocked, preventing further blood leakage and allowing the tube to be replaced.

[0036] The beneficial effect of the anti-bleeding lancet 10 provided in this embodiment is at least that the design of the clamping mechanism 20 effectively prevents blood from spilling during the blood collection process, reducing contamination and waste. Although the connector is separated from the lancet 10, the clamping mechanism 20 prevents blood from spilling and contaminating the environment when the medical staff replaces the blood collection tube. This allows for more precise control of the blood collection process, ensuring that a sufficient amount of blood is collected. Reducing blood spillage reduces patient anxiety and discomfort, improving the overall blood collection experience.

[0037] like Figure 3As shown, the clamping member 220 in this embodiment includes an upper clamping plate 221 and a lower clamping plate 222. The upper clamping plate 221 and the lower clamping plate 222 are arranged opposite each other and located on the upper and lower sides of the outer surface of the hose 120, respectively. The upper clamping plate 221 and the lower clamping plate 222 are arranged opposite each other and located on the upper and lower sides of the hose 120, forming a mechanically balanced system. This balanced structure ensures that the clamping force on the upper and lower sides of the hose 120 is evenly distributed when subjected to external forces, thereby preventing deformation or damage to the hose 120 due to uneven force. When medical personnel have collected enough blood or need to stop blood collection, they can press the button 210 to generate a relative force between the upper clamping plate 221 and the lower clamping plate 222, blocking the flow of blood in the hose 120 and preventing blood spillage and waste. The clamping member 220's rapid clamping and loosening function greatly improves medical personnel's work efficiency, allowing them to complete the blood collection process in a short time and quickly replace blood collection tubes, providing services to more patients. This avoids the potential risk of infection and other complications caused by blood spillage.

[0038] like Figure 3 As shown, in this embodiment, a first elastic member 223 is provided on the side of the upper clamping plate 221 facing away from the hose 120. One end of the first elastic member 223 is fixedly connected to the upper clamping plate 221, and the other end is fixedly connected to the pressing member 210. A second elastic member 224 is provided on the side of the lower clamping plate 222 facing away from the hose 120. The first elastic member 223 is connected between the upper clamping plate 221 and the pressing member 210. When the pressing member 210 is pressed, the first elastic member 223 is compressed, storing elastic potential energy. When the pressing member 210 is released, the first elastic member 223 releases this potential energy, pushing the upper clamping plate 221 away from the hose 120. To clamp the hose 120, a medical professional presses the pressing member 210, compressing the first elastic member 223 and simultaneously moving the upper clamping plate 221 toward the hose 120, thereby clamping the hose 120 together with the lower clamping plate 222. Proper clamping force protects the hose 120 and the lancet 10 from damage. An overly tight clamping force may damage the hose 120 or the lancet 10, while an overly loose clamping force may cause the hose 120 to slip or blood to spill. Adjusting the elastic element ensures that the clamping force remains within an appropriate range. To release the hose 120, the medical professional releases the push member 210. The first elastic member 223 releases its stored potential energy, pushing the upper clamping plate 221 away from the hose 120, causing the upper and lower clamping plates 221 and 222 to release their grip on the hose 120.

[0039] like Figure 3As shown, the upper clamping plate 221 and the lower clamping plate 222 in this embodiment are provided with a silicone layer 225 on the side in contact with the hose 120. Silicone is a highly elastic material with good flexibility and high temperature resistance. This enables the silicone layer 225 to fit tightly on the surface of the hose 120, providing an effective clamping effect. The surface friction coefficient of silicone is relatively high, which helps to increase the friction between the clamping plate and the hose 120, thereby improving the stability of the clamping. Compared with hard clamping materials, the silicone layer 225 can better protect the hose 120 from being pinched or damaged. The silicone layer 225 can adapt to hoses 120 of different diameters and shapes, ensuring the tightness and effectiveness of the clamping.

[0040] like Figure 3 as well as Figure 4 As shown, the push member 210 in this embodiment includes a sleeve 211, a push rod 212, and a pressure rod 213. The sleeve 211 has an internal storage space, and the push rod 212 is located in the storage space. One end of the pressure rod 213 is connected to the first elastic member 223, and the other end is connected to the push rod 212. The sleeve 211, the push rod 212, and the pressure rod 213 are physically connected to form a mechanical linkage system. Therefore, when the push member 210 is pressed, the push rod 212 is pressed downward, and the pressure rod 213 below the push rod 212 is subjected to external force, which in turn affects the state of the sleeve 211 and the entire clamping mechanism 20. One end of the pressure rod 213 is connected to the first elastic member 223. In this way, when the push rod 213 is pressed downward by the push rod 212, it rises or falls while rotating relative to the sleeve 211. As a result, the pressure rod 213 compresses or releases the elastic member, thereby storing or releasing elastic potential energy. This design utilizes the characteristics of the elastic member, giving the push member 210 an automatic recovery function. By moving the push rod 212 within the sleeve 211, the force applied to the pressure rod 213 is converted into movement of the clamping plate in the clamping mechanism 20, thereby tightening or loosening the hose 120. This design allows medical personnel to control the tightening and loosening of the hose 120 with a simple push, making operation very convenient. In other embodiments, a fixing member can be provided between the pressure rod 213 and the upper clamping plate 221 to replace the intermediate first elastic member 223, so that the upper clamping plate 221 can move with the pressure rod 213 under all circumstances. This prevents the first elastic member 223 from malfunctioning when the pressure rod 213 is pressed to release the upper clamping plate 221 from clamping the hose 120. In this case, the first elastic member 223 cannot be retracted in time, causing the upper clamping plate 221 to remain in its original position. At this time, the upper and lower clamping plates 221 and 222 continue to clamp the hose 120, causing the hose to become blocked due to the clamping of the upper and lower clamping plates 221 and 222. Therefore, failure to release the clamp of the hose 120 normally will inevitably affect the infusion process and further cause harm to the patient.

[0041] like Figure 4 as well as Figure 5 As shown, in this embodiment, the sleeve 211 is provided with a plurality of guide grooves 2111, which are used to guide and constrain the movement of the pressure rod 213 and the push rod 212. The number and layout of the guide grooves 2111 are generally designed based on the number and size of the bosses on the pressure rod 213 and the push rod 212 to ensure that the bosses can be accurately engaged in the guide grooves 2111. The pressure rod 213 is provided with a plurality of first bosses 2131, and the push rod 212 is provided with a plurality of second bosses 2122. Both the first bosses 2131 and the second bosses 2122 are engaged in the guide grooves 2111. When the push piece 210 is pressed, the push rod 212 is pressed down, and the end of the push rod 212 drives the pressure rod 213 to be pressed down at the same time, so that the pressure rod 213 is pressed down, and the second boss 2122 and the first boss 2131 are simultaneously extended into the guide groove 2111, and the push rod 212 drives the first boss 2131 to slide in the guide groove 2111 through the sliding of the second boss 2122 thereon in the guide groove 2111, and when the second boss 2122 slides in the guide groove 2111, the first boss 2131 rotates relative to the sleeve 211 under the action of the second boss 2122, thereby realizing the push rod 212 and the pressure rod The linkage between the upper clamping plate 221 and the lower clamping plate 222 ensures that the pressure rod 213 moves along a predetermined trajectory. By pressing the push rod 212, the pressure rod 213 moves up and down in the housing 230, thereby controlling the clamping or loosening of the clamping member 220. When the clamping member 220 is in a relaxed state, the upper clamping plate 221 and the lower clamping plate 222 do not completely spring apart. At this time, the upper clamping plate 221 and the lower clamping plate 222 still clamp the hose 120 under the action of a certain elastic force, while keeping the hose 120 unblocked and limiting the shaking of the hose 120, thereby preventing the hose 120 from shaking during the infusion process and affecting the infusion process. The close fit between the boss and the guide groove 2111 makes the entire clamping mechanism 20 more stable and reliable during operation, reducing operational errors caused by looseness or misalignment. This allows medical staff to easily control the clamping or loosening of the clamping member 220 during the blood collection process, effectively preventing blood spillage and improving the safety and efficiency of blood collection.

[0042] Specifically, if Figure 3 、 Figure 4 as well as Figure 5As shown, in this embodiment, the first boss 2131 and the second boss 2122 intersect with each other, and the intersection surface of the first boss 2131 and the second boss 2122 is configured as a triangular structure. The angles of the triangles on the first boss 2131 and the second boss 2122 are different. This generates a circular motion between the pressure rod 213 and the push rod 212. When the push rod 212 is pressed to move the pressure rod 213, due to the difference in the angles of the triangles, the first boss 2131 and the second boss 2122 rotate relative to each other within the guide groove 2111, thereby achieving a circular motion. When the medical staff presses the push rod 212, the second boss 2122 of the push rod 212 drives the first boss 2131 to slide within the guide groove 2111, generating a circular motion through the triangular intersection surface with the second boss 2122. This controls the tightening or loosening of the clamp 220. This design improves the flexibility and precision of the clamping mechanism, making the clamping process more uniform, smooth, and safe. In practical applications, this design can provide medical staff with a better user experience and ensure the safety and smooth progress of the blood collection process.

[0043] like Figure 2 as well as Figure 3 As shown, the clamping mechanism 20 in this embodiment also includes a shell 230, which has a storage cavity inside. The shell 230 is provided with a first through hole 235, and the first through hole 235 is used to pass the hose 120. The shell 230 serves as the basic structure of the clamping mechanism 20, and has a storage cavity inside for accommodating other clamping components such as the pressure rod 213, the push rod 212, etc. The shell 230 is provided with a first through hole 235, which serves as a channel for the hose 120 to pass through. This design allows the hose 120 to be accurately and conveniently placed in the clamping mechanism, providing a basis for subsequent clamping operations. The shell 230, as the outer structure of the clamping mechanism 20, can effectively protect the internal clamping components from interference and damage from the external environment, such as the intrusion of pollutants such as dust and moisture. The design of the shell 230 makes the operation of the clamping mechanism 20 more convenient, and medical staff can easily complete the insertion and clamping operations of the hose 120.

[0044] like Figure 2 as well as Figure 3As shown, the housing 230 in this embodiment includes an upper housing 231 and a lower housing 232, which are detachably connected via a connector 234. The housing 230 is composed of two parts, the upper housing 231 and the lower housing 232. This design allows the entire clamping mechanism 20 to be disassembled into smaller parts, namely the upper housing 231 and the lower housing 232. This modular design not only simplifies the manufacturing process but also facilitates subsequent maintenance and component replacement. The upper housing 231 and the lower housing 232 are detachably connected via connectors 234 (such as bolts, pins, snaps, etc.). This connection allows the user to easily separate or reassemble the two parts when needed without the need for complex tools or equipment. The detachable connection design allows the user to adjust the size and shape of the clamping mechanism 20 according to actual needs. For example, when clamping hoses 120 of different diameters, the user can adapt to different needs by replacing the upper housing 231 and lower housing 232 with different sizes. At the same time, the detachable connection makes maintenance more convenient. When a part is damaged or needs to be replaced, the user only needs to disassemble and replace the damaged part without replacing the entire clamping mechanism 20.

[0045] like Figure 2 As shown, the housing 230 in this embodiment is also provided with a second through hole 233, which is used to pass the push member 210. The position and size design of the second through hole 233 ensure that the push member 210 can be accurately and stably passed through the housing 230, and guide the push member 210 to move along a predetermined path to achieve clamping or loosening operations. Through the push member 210 passing through the second through hole 233, medical personnel can directly and conveniently operate the clamping mechanism 20 to clamp or loosen the hose 120. This design greatly simplifies the operating process and improves work efficiency. It makes the clamping mechanism 20 easier to operate, maintain, and adjust, improving its performance and reliability in practical applications.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A blood collection needle that prevents bleeding, characterized in that: include: A blood collection needle, comprising a needle and a hose, wherein the needle is connected to the hose; A clamping mechanism, the clamping mechanism comprising a pressing member and a clamping member, the clamping member being sleeved on the outside of the hose, the pressing member being connected to the clamping member, and the clamping member being driven by the pressing member to move and clamp the hose; The clamping member includes an upper clamping plate and a lower clamping plate, wherein the upper clamping plate and the lower clamping plate are arranged opposite to each other and are respectively located on the upper and lower sides of the outer surface of the hose; A first elastic member is provided on a side of the upper clamping plate facing away from the hose, one end of the first elastic member is fixedly connected to the upper clamping plate, and the other end is fixedly connected to the pressing member; A second elastic member is provided on a side of the lower clamping plate facing away from the hose; The upper clamping plate and the lower clamping plate are provided with a silicone layer on one side in contact with the hose; The push member comprises: a sleeve, wherein the sleeve has an accommodating space therein; a push rod, the push rod being located in the accommodating space; a pressure rod, one end of which is connected to the first elastic member and the other end of which is connected to the push rod; The sleeve is provided with a plurality of guide grooves; The pressure rod is provided with a plurality of first bosses, and the push rod is provided with a plurality of second bosses, and the first bosses and the second bosses are both clamped in the guide groove; The first boss and the second boss intersect with each other, and the intersection surfaces of the first boss and the second boss are both configured as a triangular structure.

2. The anti-bleeding blood collection needle according to claim 1, characterized in that: The clamping mechanism further comprises a shell having an accommodating cavity therein and a first through hole provided on the shell for passing the hose.

3. The anti-bleeding blood collection needle according to claim 2, characterized in that: The housing includes an upper housing and a lower housing, and the upper housing and the lower housing are connected by a connecting piece.

4. The anti-bleeding blood collection needle according to claim 2, characterized in that: The housing is further provided with a second through hole, and the second through hole is used for passing the pressing member.

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