A venipuncture needle clamp device and end effector
By designing a venous puncture needle clamping device with a base, clamp adapter, pressure sensor, and fixed swing arm, the problem of fixing and replacing puncture needles in the prior art has been solved, realizing convenient operation and high-precision puncture, reducing costs and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUXI JIUZHEN INTELLIGENT TECH (BEIJING) CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-07-07
AI Technical Summary
Existing intravenous puncture needle clamp devices have problems such as difficulty in conveniently fixing and replacing puncture needles, susceptibility to patient positioning, complex pressure sensor detection, and high procurement costs, which affect puncture accuracy and effectiveness.
A venous puncture needle clamping device was designed, comprising a base, a clamp adapter, a pressure sensor, a motor, and a fixed swing arm. The device enables convenient fixing and release of the puncture needle through a limiting groove and a fixed swing arm, and the pressure sensor monitors the puncture force in real time.
It enables convenient fixation and release of puncture needles, reduces procurement costs, improves puncture accuracy and safety, is suitable for various patient positions, and simplifies the operation process.
Smart Images
Figure CN224461811U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of intravenous puncture device technology, and in particular to an intravenous puncture needle clamp device and an end effector. Background Technology
[0002] Automated puncture robot technology will see wider application and development in the future. With the continuous development of medical robots, automated puncture robots are expected to become one of the important tools in the future medical field. However, the needle clamping devices currently used in automated intravenous puncture robots still have significant limitations. For example, the puncture clamping device is affected by the patient's position. It also suffers from a series of problems, such as the inability to safely and quickly release the needle, cumbersome disassembly and assembly operations, complex pressure sensor detection methods, and inability to withstand high forces, thus affecting puncture accuracy and effectiveness.
[0003] Currently, a common solution is to lay a layer of nylon tensile belt as a buffer in the stress concentration area of the equipment side plate. The belt thickness is no more than 7mm. The compression deformation of the belt itself reduces the stress caused by the impact of the object, but this has not proven to be very effective. Existing technology discloses a needle clamping mechanism for puncture, which uses two clamps to fix the puncture needle to achieve the puncture action. However, after puncture, the mechanism cannot easily release the puncture needle. Existing technology also discloses a puncture needle clamp suitable for specific types of intravenous infusions or infusion sets. However, this clamp requires a customized infusion puncture needle and is not suitable for standard infusion needles, which limits its flexibility in practical applications and increases procurement costs. Most existing devices make it difficult to easily fix and replace the puncture needle, or to easily release the puncture needle after it has been fixed, increasing the difficulty of use. Utility Model Content
[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a venous puncture needle clamping device and end effector, which can conveniently fix the puncture needle and change the needle, and has flexibility.
[0005] To achieve the above objectives, this utility model provides a venous puncture needle clamp device, comprising:
[0006] The base has a through hole and a limiting groove;
[0007] The clamp adapter is mounted on the base;
[0008] A pressure sensor is mounted on the clamp adapter;
[0009] An electric motor is mounted on one side of the base, and the transmission mechanism of the motor passes through the through hole;
[0010] A fixed swing arm is fixed to the transmission mechanism of the motor and rotatably mounted on the other side of the base.
[0011] Furthermore, it also includes a puncture needle, which is placed in the limiting groove and is restricted by the contact of the fixed swing arm.
[0012] Furthermore, the clamp adapter has a drive shaft, which is used to drive the puncture needle to complete the insertion or withdrawal action under the drive of the external puncture needle actuator.
[0013] Furthermore, the fixed swing arm includes a fixed arm and a puncture needle clamping block. The fixed arm is connected to the transmission mechanism of the motor. The puncture needle clamping block is located at the end of the fixed arm. The fixed arm can swing around the transmission mechanism to make the puncture needle clamping block close to or away from the puncture needle.
[0014] Furthermore, the base includes a fixing plate and a puncture needle limiting plate;
[0015] The through hole is provided on the fixing plate;
[0016] The puncture needle limiting plate and the fixed swing arm are located on the same side of the fixed plate;
[0017] The lower surface of the puncture needle limiting plate is provided with the limiting groove, and the limiting groove is parallel to the fixing plate.
[0018] Furthermore, the fixing plate includes a first fixing plate and a second fixing plate that are perpendicular to each other. The first fixing plate is used to install the clamp adapter, and the second fixing plate is provided with a through hole for the transmission mechanism to pass through, for installing the fixed swing arm and the motor.
[0019] On the other hand, the present invention also provides an end effector, including a puncture execution device and a venous puncture needle clamping device as described above, wherein the puncture execution device is connected to a clamping adapter on the venous puncture needle clamping device.
[0020] The intravenous puncture needle clamp device of this invention has the following advantages compared with the prior art:
[0021] The device uses a fixed swing arm and a limiting groove to fix and release the puncture needle. The device has a simple and reliable structure and good flexibility.
[0022] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description
[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They, together with the embodiments of the present invention, serve to explain the present invention and do not constitute a limitation thereof. In the drawings:
[0024] Figure 1 This is a perspective view of the intravenous puncture needle clamp device according to an embodiment of the present utility model;
[0025] Figure 2 This is another perspective view of the intravenous puncture needle clamp device according to an embodiment of the present utility model;
[0026] Figure 3 This is a front view of the intravenous puncture needle clamp device according to an embodiment of the present utility model;
[0027] Figure 4 This is a left view of the intravenous puncture needle clamp device according to an embodiment of the present invention;
[0028] Figure 5 This is a top view of the intravenous puncture needle clamp device according to an embodiment of the present utility model;
[0029] Figure 6 This is a schematic diagram of the swinging of a fixed swing arm according to an embodiment of the present invention. Detailed Implementation
[0030] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.
[0031] Embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.
[0032] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.
[0033] In the accompanying drawings, certain structural or methodological features are shown in a specific arrangement and / or order. However, it should be understood that such a specific arrangement and / or order may not be necessary. In some embodiments, these features may be arranged in a manner and / or order different from that shown in the illustrative drawings. Furthermore, the inclusion of structural or methodological features in a particular figure does not imply that such features are required in all embodiments, and in some embodiments, these features may be omitted or may be combined with other features.
[0034] It should be understood that although terms such as "first," "second," etc., may be used herein to describe various units or data, these units or data should not be limited by these terms. These terms are used merely to distinguish one feature from another. For example, without departing from the scope of the exemplary embodiments, a first feature may be referred to as a second feature, and similarly, a second feature may be referred to as a first feature.
[0035] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "Multiple" should be understood as two or more.
[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.
[0037] In the description of this utility model, it should be understood that the terms "upper", "lower", "side", "top", "inner", "front", "both ends", etc., that may be mentioned indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.
[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0039] Example 1
[0040] This embodiment provides a venous puncture needle clamp device, including: a base with a through hole and a limiting groove; a clamp adapter mounted on the base; a pressure sensor mounted on the clamp adapter; a motor mounted on one side of the base, with the transmission mechanism of the motor passing through the through hole; and a fixed swing arm fixed to the transmission mechanism of the motor and rotatably disposed on the other side of the base.
[0041] Figure 1 This is a perspective view of the intravenous puncture needle clamp device according to an embodiment of the present utility model. The following will be combined with... Figure 1 The present invention provides a more detailed description of the intravenous puncture needle clamp device.
[0042] The intravenous puncture needle clamp device of this embodiment includes a clamp adapter 1, a pressure sensor 2, a base 3, a motor 4, a fixed swing arm 5, and a puncture needle 6. A limiting groove for fixing the puncture needle 6 is provided on the horizontally downward contact surface of the base 3. The clamp adapter 1 is mounted on the base 3 and is used in conjunction with a puncture execution device (not shown in the figure) to drive the puncture needle 6 to complete the insertion and withdrawal actions. The pressure sensor 2 is mounted on the clamp adapter 1 and is used to convert the input mechanical pressure into an electrical output signal for real-time monitoring of the pressure at the tip of the puncture needle 6. The motor 4 is the power source for driving the fixed swing arm 5 to fix or release the puncture needle 6. The motor 4 is mounted on one side of the base 3, and the fixed swing arm 5 is connected to the motor 4. When the fixed swing arm 5 is in the closed state, it contacts the puncture needle 6 and confines it in the limiting groove, thereby fixing the puncture needle 6.
[0043] In an embodiment of this utility model, the clamp adapter 1 has a drive shaft, which, under the drive of the external puncture needle actuator, drives the entire intravenous puncture needle clamp device to perform the puncture operation.
[0044] Figure 2 This is another perspective view of the intravenous puncture needle clamp device according to an embodiment of the present utility model. Figure 3 This is a front view of the intravenous puncture needle clamp device according to an embodiment of the present utility model. Figure 4 This is a left view of the intravenous puncture needle clamp device according to an embodiment of the present invention. Figure 5 This is a top view of the intravenous puncture needle clamp device according to an embodiment of the present utility model. The following will be combined with... Figures 2 to 5 The various structures of the above-mentioned intravenous puncture needle clamp device are described in further detail.
[0045] The fixed swing arm 5 of this embodiment includes a fixed arm 51 and a puncture needle clamping block 52. The fixed arm 51 is connected to the transmission mechanism of the motor 4, and the puncture needle clamping block 52 is located at the end of the fixed arm 51. The fixed arm 51 can swing around the axis of the motor 4 (e.g., Figure 6 (As shown by the middle arrow), so that the puncture needle clamping block 52 is close to or away from the puncture needle 6.
[0046] The base 3 includes a first fixing plate 31, a second fixing plate 32, and a puncture needle limiting plate 33. Both the first fixing plate 31 and the puncture needle limiting plate 33 are vertically connected to the second fixing plate 32. The first fixing plate 31 is used to mount the clamp adapter 1 and the pressure sensor 2. The second fixing plate 32 has through holes for mounting the motor 4 and the fixed swing arm 5 (mounted on opposite sides of the second fixing plate 32). The puncture needle limiting plate 33 and the fixed swing arm 5 are located on the same side of the second fixing plate 32. The bottom of the puncture needle limiting plate 33 has a limiting groove parallel to the second fixing plate 32 and perpendicular to the first fixing plate 31. The axes of the puncture needle 6 and the pressure sensor 2 are located on the same plane, facilitating real-time detection of the puncture force; the pressure sensor monitors the puncture force in real time, ensuring patient safety.
[0047] In some embodiments of this invention, the puncture needle 6 is confined in the limiting groove by one end of the puncture needle clamping block 52 on the fixed swing arm 5. In other embodiments of this invention, the length of the puncture needle clamping block 52 can be set according to actual needs, and the upper surface of the puncture needle clamping block 52 is used to contact and confine the puncture needle. At the same time, the size of the limiting groove can be set according to actual needs to accommodate puncture needles of more sizes.
[0048] The intravenous puncture needle clamping device of this embodiment allows nurses to conveniently clamp and change needles: when the fixed swing arm 5 returns to its original position (i.e., away from the puncture needle limiting plate 33), the nurse can place the infusion puncture needle 6 into the limiting groove on the base 3; after the nurse places the puncture needle 6, the fixed swing arm 5 closes (i.e., moves closer to the puncture needle limiting plate 33, and the puncture needle 6 is contacted and fixed by the puncture needle clamping block 52 on the fixed swing arm 5), thus fixing the infusion puncture needle 6 in place. The needle tip protective sleeve of the puncture needle 6 can be retained throughout the procedure, protecting both the patient and the nurse from injury. After the puncture is completed, the fixed swing arm 5 returns to its original position, releasing the puncture needle 6, eliminating the need for further operation by the nurse, thus providing flexibility.
[0049] The intravenous puncture needle clamp device of this utility model has the following advantages:
[0050] It is suitable for standard intravenous puncture needles (infusion puncture needles) commonly used in medical institutions on the market, reducing the procurement cost of puncture needle clamps, and is economical and suitable for most medical institutions;
[0051] When used in automated intravenous puncture robots, it can reduce the operational requirements for nurses. Nurses only need to place the puncture needle into the designated position (limiting groove), and the automated intravenous puncture robot can automatically adjust and fix the puncture needle for precise puncture.
[0052] The axes of the puncture needle and the pressure sensor are on the same plane, which facilitates real-time detection of puncture force; the pressure sensor is used to monitor the puncture force in real time to ensure patient safety.
[0053] The structure is simple and reliable, easy to disinfect and clean, and prevents cross-infection; the structure is not affected by the patient's position, and can safely and quickly release the puncture needle and easily retrieve it; it can meet the requirements of pressure sensor for reliable and simple real-time detection, convenient disassembly and assembly, and high load-bearing capacity.
[0054] Example 2
[0055] This embodiment provides an end effector, including a puncture actuator and a vein puncture needle clamping device as described in the above embodiment. The puncture actuator is connected to the clamping adapter of the vein puncture needle clamping device, driving the puncture needle 6 on the vein puncture needle clamping device into the target tissue. Using the above-described vein puncture needle clamping device as an end effector, such as the end effector of an automated vein puncture robot, improves the operational safety and flexibility of the end effector due to the simple and reliable structure of the vein puncture needle clamping device, convenient and quick needle clamping and replacement, and high safety and reliability.
[0056] It will be understood by those skilled in the art that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A clamping device for intravenous puncture needles, characterized in that, include: The base has a through hole and a limiting groove; The clamp adapter is mounted on the base; A pressure sensor is mounted on the clamp adapter; An electric motor is mounted on one side of the base, and the transmission mechanism of the motor passes through the through hole; A fixed swing arm is fixed to the transmission mechanism of the motor and rotatably mounted on the other side of the base.
2. The intravenous puncture needle clamp device according to claim 1, characterized in that, It also includes a puncture needle, which is placed in the limiting groove and is restricted by the contact of the fixed swing arm.
3. The intravenous puncture needle clamp device according to claim 2, characterized in that, The clamp adapter has a drive shaft, which is used to drive the puncture needle to complete the insertion or withdrawal action under the drive of the external puncture needle actuator.
4. The intravenous puncture needle clamp device according to claim 2, characterized in that, The fixed swing arm includes a fixed arm and a puncture needle clamping block. The fixed arm is connected to the transmission mechanism of the motor. The puncture needle clamping block is located at the end of the fixed arm. The fixed arm can swing around the transmission mechanism to make the puncture needle clamping block close to or away from the puncture needle.
5. The intravenous puncture needle clamp device according to claim 1, characterized in that, The base includes a fixing plate and a puncture needle limiting plate; The through hole is provided on the fixing plate; The puncture needle limiting plate and the fixed swing arm are located on the same side of the fixed plate; The lower surface of the puncture needle limiting plate is provided with the limiting groove, and the limiting groove is parallel to the fixing plate.
6. The intravenous puncture needle clamp device according to claim 5, characterized in that, The fixing plate includes a first fixing plate and a second fixing plate that are perpendicular to each other. The first fixing plate is used to install the clamp adapter and the pressure sensor. The second fixing plate is provided with a through hole for the transmission mechanism to pass through, for installing the fixed swing arm and the motor.
7. An end effector, characterized in that, The device includes a puncture execution device and a venous puncture needle clamping device as described in any one of claims 1-6, wherein the puncture execution device is connected to a clamping adapter on the venous puncture needle clamping device.