A venous positioning device for blood sampling

Abstract

The application discloses a vein positioning device for blood sampling, and belongs to the technical field of medical instruments, which is used for providing a vein positioning device for more stable needle in the blood sampling process, comprising a restraint belt, the restraint belt has a wrapping part and a positioning part, the positioning part is located on one side of the wrapping part, a tourniquet is connected to the side of the positioning part away from the wrapping part, a through hole is formed in the center of the positioning part and penetrates through the upper and lower surfaces, a needle binding plate is further fixedly connected to the upper surface of the positioning part, a friction strip is arranged on the inner side of the wrapping part, and the two ends of the wrapping part are connected together through magic tape. The restraint belt with the positioning part is designed, the restraint belt is wrapped on the arm of a blood sampling object and kept stable during use, meanwhile, the needle and the needle tube are fixed on the needle binding plate at the same time, so that movement of the needle relative to the skin during blood sampling can be well prevented, meanwhile, the curved restraint belt can inhibit the movement of the elbow, and the probability of secondary injury caused by the needle is reduced from two aspects.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and more particularly to a vein positioning device for blood collection. Background Technology

[0002] When performing intravenous blood collection, nurses need to use both hands to insert and remove the blood container. The end of the needle inserted into the skin needs to be secured with medical tape. However, the restraining power of medical tape is very limited. If the nurse does not control the force when inserting or removing the blood container and pulls the needle, the needle may come out of the skin, requiring a second puncture. On the other hand, medical tape cannot restrain the patient's arm, so if the patient moves around, the needle may penetrate deeper into the skin or even pass through a blood vessel, causing additional puncture damage. Summary of the Invention

[0003] The purpose of this application is to provide a vein positioning device that makes the needle more stable during blood collection.

[0004] To achieve the above objectives, this application provides a vein positioning device for blood collection: including a restraint strap, the restraint strap having a wrapping part and a positioning part, the positioning part being located on one side of the wrapping part, a pressure band being connected to the side of the positioning part away from the wrapping part, an insertion port penetrating the upper and lower surfaces being opened in the center of the positioning part, a needle-binding plate being fixedly connected to the upper surface of the positioning part for restraining the needle tip and needle tube, a friction strip being provided on the inner side of the wrapping part, and the two ends of the wrapping part being connected together by Velcro for easy fixing and removal.

[0005] As a preferred embodiment, the needle bundle plate is located between the wrapping part and the positioning part, and the upper surface of the needle bundle plate is provided with a tube clamping groove. The two ends of the tube clamping groove point to the wrapping part and the positioning part respectively, which is roughly the same as the direction of the needle that pierces the skin, so as to facilitate the restraint of the needle and the needle tube.

[0006] As a preferred embodiment, there are several tube-holding grooves, which are equidistantly arranged along the length of the needle bundle plate, and can repeatedly hold the reciprocatingly bent needle tube.

[0007] As a preferred embodiment, the wrapping part and the positioning part are integrally made of polyester fiber material, and the needle bundle plate is made of plastic, which takes into account both hardness and deformation recovery.

[0008] As a preferred embodiment, the inner side of the positioning part is provided with a friction pad surrounding the insertion port. Both the friction strip and the friction pad are made of silicone material to increase the friction between the restraint strap and the skin.

[0009] As a preferred embodiment, the positioning part has a through-path for both ends on the side away from the wrapping part, the pressure band has a hidden part located within the through-path, and both ends of the hidden part have binding parts extending out of the through-path, and only the binding parts located outside the through-path are bound together.

[0010] As a preferred embodiment, the pressure band is a tubular shape with uniform thickness and uniform wall thickness, and has uniform elasticity.

[0011] As a preferred embodiment, one end of the wrapping part has a hook and loop fastener sewn on its outer side, and the other end of the wrapping part has a loop fastener sewn on its inner side. The loop fastener is larger than the hook and loop fastener along the dimensions of the wrapping part, so that the wrapping part can fit arms of different thicknesses.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] (1) By designing a constraint band structure with a positioning part, it can be wrapped around the arm of the blood collection object to keep it stable during use, and at the same time fix the needle and needle tube to the needle bundle plate. This can effectively prevent the movement of the needle relative to the skin during blood collection. At the same time, the curved constraint band can suppress the movement at the bend of the arm, reducing the probability of secondary injury caused by the needle from two aspects.

[0014] (2) By using the compression band and restraint band together, the binding, vascular positioning, needle insertion and release blood drawing operations can be completed in one go, ensuring the continuity of the operation, reducing the difficulty for the operating nurse, and improving the safety and stability of the blood drawing process. Attached Figure Description

[0015] Figure 1 This is a first three-dimensional schematic diagram of the overall structure of the vein positioning device used for blood collection.

[0016] Figure 2 This is a second three-dimensional schematic diagram of the overall structure of the vein positioning device used for blood collection.

[0017] Figure 3 This is a three-dimensional structural diagram of the restraint strap of the vein positioning device used for blood collection.

[0018] Figure 4 This is a three-dimensional cross-sectional view of the restraint strap of the vein positioning device used for blood collection.

[0019] Figure 5 This is a three-dimensional schematic diagram of the pressure band of the vein positioning device used for blood collection.

[0020] In the diagram: 1. Pressure band; 101. Hidden part; 102. Binding part; 2. Restraint strap; 201. Wrapping part; 202. Positioning part; 203. Hook and loop fastener; 204. Hook and loop fastener; 205. Insertion port; 206. Friction strip; 207. Friction pad; 208. Threading channel; 3. Needle plate; 301. Tube slot. Detailed Implementation

[0021] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0022] In the description of this application, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this application.

[0023] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0024] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0025] like Figure 1-5The vein positioning device for blood collection shown includes a waterproof, oil-proof, blood-stain-proof, and easy-to-clean restraint strap 2. The restraint strap 2 has a flexible and bendable wrapping portion 201 and a positioning portion 202. The wrapping portion 201 and the positioning portion 202 are made of polyester fiber material in one piece, providing good stain resistance. The positioning portion 202 is significantly smaller than the wrapping portion 201 and is located on one side of the wrapping portion 201. The positioning portion 202 is typically located in the center of one side of the wrapping portion 201. A pressure band 1 is connected to the side of the positioning portion 202 away from the wrapping portion 201. In fact, both the positioning portion 202 and the wrapping portion 201 are two layers of polyester fiber fabric stacked and sewn together. The positioning portion 202 is located away from the wrapping portion 201. The two ends of one side of 01 are not sewn together, so that the two layers of polyester fiber fabric form a through-path 208 at the edge of the positioning part 202, through which the pressure band 1 passes. The two ends of the pressure band 1 are outside the through-path 208. The pressure band 1 has a hidden part 101 located in the through-path 208. Both ends of the hidden part 101 have binding parts 102 extending out of the through-path 208. The pressure band 1 is an integral structure. The hidden part 101 and the binding part 102 are only distinguished by the different positions of different parts of the pressure band 1 relative to the positioning part 202. In fact, the pressure band 1 is a common tubular structure with uniform thickness and uniform wall thickness made of soft, elastic, and tough silicone material.

[0026] The positioning part 202 has an insertion port 205 that runs through the upper and lower surfaces in the center, which can frame the skin where the vein is located. The inner side of the positioning part 202 is provided with friction pads 207 surrounding the insertion port 205. The friction pads 207 are all made of medical-grade silicone material, which has good softness and skin-friendliness. After contacting the skin, the friction force is large and it is not easy to move.

[0027] A needle-binding plate 3 is also fixedly connected to the upper surface of the positioning part 202. The needle-binding plate 3 is made of plastic with a certain shape retention capability. The needle-binding plate 3 can be fixedly connected to the constraint band 2 by curing adhesive. If the needle-binding plate 3 has a pre-set through-hole structure, it can also be sewn and fixed to the surface of the constraint band 2 by sewing thread. The needle-binding plate 3 is located between the wrapping part 201 and the positioning part 202. In fact, the needle-binding plate 3 is located on the outer surface of the positioning part 202 near the wrapping part 201. A tube-holding groove 301 is opened on the upper surface of the needle-binding plate 3. The inner wall of the tube-holding groove 301 is an arc surface, and the size of the upper opening is narrowed, which can constrain the needle and needle tube structure. The two ends of the tube-holding groove 301 point to the wrapping part 201 and the positioning part 202 respectively, so that the needle that pierces the skin can be smoothly embedded in the tube-holding groove 301. There are several tube-holding grooves 301. These tube-holding grooves 301 are equidistantly arranged along the length direction of the needle-binding plate 3, which can improve the constraint and adaptation capability of the needle and needle tube.

[0028] The inner side of the wrapping part 201 is provided with a friction strip 206, which is also made of medical-grade hygienic silicone material. The friction strip 206 is used to increase the friction between the wrapping part 201 and the skin and improve the positioning stability. The two ends of the wrapping part 201 are connected together by Velcro. Specifically, the outer side of one end of the wrapping part 201 is sewn with a Velcro hook side 203, which can reduce the contact and rubbing between the hard Velcro hook side 203 and the skin. The inner side of the other end of the wrapping part 201 is sewn with a Velcro loop side 204, which minimizes the damage to the skin even when in contact with it. The Velcro loop side 204 is larger than the Velcro hook side 203 along the size of the wrapping part 201, so that it can be connected over a larger distance, making the wrapping part 201 adaptable to a variety of arms of different thicknesses.

[0029] Working principle: In use, first place the restraint strap 2 on the arm of the person being blood collected, so that the insertion port 205 of the positioning part 202 frames the vein on the inside of the elbow. Then, the two binding parts 102 of the compression band 1, which is placed above the elbow, wrap around the upper arm and tighten together, reducing venous reflux and causing the vein to expand under pressure. Fine-tune the covering position of the positioning part 202 so that the expanded vein is located as centrally as possible in the insertion port 205. Then, tighten both ends of the wrapping part 201 and wrap it around the lower part of the forearm. The end with the hook and loop fastener 203 first contacts the forearm, and the end with the loop fastener 204 then covers the hook and loop fastener 203 to complete the connection. Due to the friction strip 206 and friction pad 20... 7. Due to the friction with the skin, the position of the vein within the insertion port 205 no longer changes. Remove the protective cap from the tip of the needle and insert it into the vein beneath the skin through the insertion port 205. Then, insert the needle into the cannula slot 301 of the needle bundle plate 3, and insert the cannula connected to the needle into other cannula slots 301. Repeat this process multiple times. In this way, even without the use of tape, the needle and cannula can maintain relative stability. Finally, release the tourniquet 1, and venous blood will be continuously drawn out. Even after the restraint of the tourniquet 1 is released, the curved wrapping part 201 and the positioning part 202 can inhibit the bending of the arm of the person being blood collected, thereby maintaining the stability of the needle position throughout the blood collection process.

[0030] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A vein positioning device for blood collection, characterized in that: The device includes a restraint band (2), which has a wrapping part (201) and a positioning part (202). The positioning part (202) is located on one side of the wrapping part (201). A pressure band (1) is connected to the side of the positioning part (202) away from the wrapping part (201). An insertion port (205) is provided in the center of the positioning part (202) that passes through the upper and lower surfaces. A needle-binding plate (3) is also fixedly connected to the upper surface of the positioning part (202) to restrain the needle and needle tube. A friction strip (206) is provided on the inner side of the wrapping part (201). The two ends of the wrapping part (201) are connected together by Velcro.

2. The vein positioning device for blood collection as described in claim 1, characterized in that: The needle plate (3) is located between the wrapping part (201) and the positioning part (202). The upper surface of the needle plate (3) is provided with a tube clamping groove (301), and the two ends of the tube clamping groove (301) point to the wrapping part (201) and the positioning part (202) respectively.

3. The vein positioning device for blood collection as described in claim 2, characterized in that: There are several tube-holding grooves (301), and these tube-holding grooves (301) are arranged at equal intervals along the length direction of the needle bundle plate (3).

4. The vein positioning device for blood collection as described in claim 3, characterized in that: The wrapping part (201) and the positioning part (202) are integrally made of polyester fiber material, and the needle plate (3) is made of plastic.

5. The vein positioning device for blood collection as described in claim 4, characterized in that: The inner side of the positioning part (202) is provided with a friction pad (207) surrounding the insertion port (205), and both the friction strip (206) and the friction pad (207) are made of silicone material.

6. The vein positioning device for blood collection as described in any one of claims 1 to 5, characterized in that: The positioning part (202) has a through-path (208) on the side away from the wrapping part (201), and the pressure band (1) has a hidden part (101) located in the through-path (208). Both ends of the hidden part (101) have binding parts (102) extending out of the through-path (208).

7. The vein positioning device for blood collection as described in claim 6, characterized in that: The pressure band (1) is a tubular shape with uniform thickness and uniform wall thickness.

8. The vein positioning device for blood collection as described in any one of claims 1 to 6, characterized in that: One end of the wrapping part (201) has a hook and loop fastener (203) sewn on its outer side, and the other end of the wrapping part (201) has a loop fastener (204) sewn on its inner side. The loop fastener (204) is larger than the hook and loop fastener (203) along the dimensions of the wrapping part (201).

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