A forearm fixation device for radial artery puncture

Abstract

The utility model discloses a kind of forearm fixing devices for radial artery puncture, comprising: forearm restraint, is equipped with linear recess for placing forearm;Palm restraint, palm restraint includes palm support plate and palm center pressing plate;Palm support plate is connected with forearm restraint and the connecting part is located in the front end slot of linear recess, and the protruding portion for lifting wrist back is formed on palm support plate, the protruding portion is close to the front end slot of linear recess and set and the top of protruding portion is higher than the groove bottom of linear recess and the both ends of palm support plate;One end of palm center pressing plate is located in the side of palm support plate, and the other end of palm center pressing plate is bent upwards and hangs above palm support plate, and palm support plate and palm center pressing plate are all elastic deformation plate or plastic deformation plate.The forearm and palm maintain fixed posture and are not easy to loosen, can improve radial artery puncture success rate and the stability of pipeline after puncture success, so that radial artery is in good dorsiflexion and extension state.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, specifically to a forearm fixation device for radial artery puncture. Background Technology

[0002] Arterial catheterization enables continuous intra-arterial blood pressure measurement, providing timely and accurate insights into blood pressure changes. The pressure and waveform measured directly in the artery reflect cardiac output, peripheral vascular resistance, and intravascular volume. Therefore, continuous intravascular pressure monitoring is necessary for patients with pre-existing cardiac disease and hemodynamic instability, those expected to experience significant intraoperative blood loss, or those requiring repeated blood gas analysis. The radial artery, being superficial and relatively fixed, is relatively easy to puncture and place a catheter, making it the most commonly used arterial puncture site in clinical practice.

[0003] Radial artery puncture has a wide range of applications, commonly used for continuous arterial pressure monitoring after catheter placement and establishing access in interventional procedures. During the puncture, the radial artery needs to be maintained in a certain dorsiflexion and extension position, which helps improve the success rate. After a successful puncture, it is also necessary to avoid excessive flexion or rotation of the wrist or forearm, as this can cause the catheter to become stuck to the wall or even kink.

[0004] Currently, there are no suitable devices in the relevant techniques to restrain the patient's forearm and wrist to assist in radial artery puncture. Clinically, the common method to maintain radial artery dorsiflexion and extension involves placing a saline bag or towel on the back of the patient's hand for support, while simultaneously using tape or other restraints to press the palm down. This method is rather crude and has a poor effect on maintaining radial artery dorsiflexion and extension. Utility Model Content

[0005] The purpose of this utility model is to at least partially solve one of the technical problems in the related art. In view of this, a forearm fixation device for radial artery puncture is provided, comprising: a forearm restraint member with a straight groove for inserting the forearm; a palm restraint member, the palm restraint member including a palm support plate and a palm pressing plate; the palm support plate is connected to the forearm restraint member and the connection part is located at the front end of the straight groove; the palm support plate has a raised part for supporting the back of the wrist; the raised part is located near the front end of the straight groove and the top of the raised part is higher than the bottom of the straight groove and both ends of the palm support plate; one end of the palm pressing plate is located on the side of the palm support plate, and the other end of the palm pressing plate is bent upward and suspended above the palm support plate; both the palm support plate and the palm pressing plate are elastic deformation plates or plastic deformation plates.

[0006] Compared with the prior art, the technical solution of this utility model has the following advantages:

[0007] This utility model is designed for radial artery puncture applications and features an innovative forearm fixation device. The forearm restraint member uses the shape of a straight groove to accommodate and restrain the patient's forearm. With the forearm in an extended position, the palm rests naturally on the palm support plate of the palm restraint member at the front end. The raised top of the palm support plate exerts pressure on the back of the wrist, ensuring that the radial artery is in a good dorsiflexion and extension position. Furthermore, the deformable palm pressing plate clamps and limits the palm, maintaining the forearm and palm in a fixed posture and preventing them from loosening. This improves the success rate of radial artery puncture and the stability of the tubing after successful puncture.

[0008] According to an example of the present invention, the palm support plate is further provided with a thumb pressing strip, the thumb pressing strip and the palm pressing plate are disposed opposite to each other on both sides of the palm support plate, and the thumb pressing strip is an elastic deformation plate or a plastic deformation plate.

[0009] According to an example of the present invention, the forearm constraint member has two first threading holes opposite each other at the top slot of the straight groove, and a first constraint band passing through the two first threading holes and crossing the straight groove is provided. The first constraint band is located near the rear slot of the straight groove, and the first constraint band is a tie or hook and loop fastener.

[0010] According to an example of the present invention, the forearm constraint member has two second threading holes opposite each other at the top slot of the straight groove. A second constraint band that crosses the straight groove is threaded through the two second threading holes. The second constraint band is located near the front slot of the straight groove, and the second constraint band is a tie or hook and loop fastener.

[0011] According to one example of the present invention, the forearm restraint member is provided with a first ventilation hole evenly distributed, the palm support plate is provided with a second ventilation hole evenly distributed, and the palm pressing plate is provided with a third ventilation hole evenly distributed.

[0012] According to one example of the present invention, the palm support plate and the palm pressing plate are both low-temperature thermoplastic plates, thin metal plates, or elastic silicone plates.

[0013] According to an example of the present invention, when the palm support plate and the palm pressing plate are low-temperature thermoplastic plates, the forearm fixing device further includes an electrothermal shaping component. The electrothermal shaping component includes an electrothermal film strip, a control switch and a power connector connected in sequence. The electrothermal film strip is provided with multiple strands and is at least attached to or built into the palm support plate and the palm pressing plate.

[0014] According to one example of the present invention, the palm pressing plate is provided with a gripping ball at one end folded toward the palm support plate, and the gripping ball is a hollow sphere.

[0015] According to one example of this utility model, the forearm restraint and the palm restraint are formed by bending a single piece of sheet metal.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of one usage state of the forearm fixation device for radial artery puncture according to this utility model.

[0019] Figure 2 This is a schematic diagram of the second usage state of a forearm fixation device for radial artery puncture according to this utility model.

[0020] Figure 3 This is a structural diagram of a forearm fixation device for radial artery puncture according to the present invention.

[0021] Figure 4 This is a utility model Figure 3 Enlarged view of part A.

[0022] Figure 5 This is a utility model Figure 3 Enlarged view of part B.

[0023] Figure 6 This is a second structural diagram of a forearm fixation device for radial artery puncture according to the present invention.

[0024] Figure 7 This is a structural diagram of a forearm fixation device for radial artery puncture according to the present invention.

[0025] The reference numerals in the attached drawings are as follows: 100, forearm restraint; 101, straight groove; 102, first threading hole; 103, first restraint band; 104, second threading hole; 105, second restraint band; 106, first vent; 200, palm restraint; 201, palm support plate; 2011, raised part; 2012, second vent; 202, palm pressing plate; 2021, third vent; 203, thumb pressing strip. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] [First Embodiment]

[0028] Please see Figure 1 , Figure 2 As shown, this utility model provides a forearm fixation device for radial artery puncture, including: a forearm restraint member 100, having a linear groove 101 for inserting the forearm; a palm restraint member 200, the palm restraint member 200 including a palm support plate 201 and a palm pressing plate 202; the palm support plate 201 is connected to the forearm restraint member 100 and the connection part is located at the front end slot of the linear groove 101, and the palm support plate 201 has a support for lifting the back of the wrist. The raised portion 2011 is located near the front end of the straight groove 101, and the top of the raised portion 2011 is higher than the bottom of the straight groove 101 and both ends of the palm support plate 201; one end of the palm pressing plate 202 is located on the side of the palm support plate 201, and the other end of the palm pressing plate 202 is bent upward and suspended above the palm support plate 201. Both the palm support plate 201 and the palm pressing plate 202 are elastic deformation plates or plastic deformation plates.

[0029] In this invention, the forearm restraint member 100 uses the groove shape of the straight groove 101 to accommodate and restrain the patient's forearm. After the forearm is kept in an extended position, the palm rests naturally on the palm support plate 201 of the palm restraint member 200 at the front end. Based on the top of the raised part 2011 on the palm support plate 201 exerting a pushing effect on the back of the wrist, the radial artery is in a good dorsiflexion and extension state. Then, the deformable palm pressing plate 202 clamps and limits the palm part, so that the forearm and palm maintain a fixed posture and are not easy to loosen. This can improve the success rate of radial artery puncture and the stability of the tube after successful puncture.

[0030] [Second Embodiment]

[0031] This embodiment is based on Embodiment 1 described above, and makes one of the optimized designs, such as... Figure 1 As shown, according to an example of the present invention, the palm support plate 201 is further provided with a thumb pressing strip 203. The thumb pressing strip 203 and the palm pressing plate 202 are disposed opposite to each other on both sides of the palm support plate 201, and the thumb pressing strip 203 is an elastic deformation plate or a plastic deformation plate.

[0032] In the aforementioned embodiment 1, the palm pressing plate 202 bends upward from one side of the palm support plate 201 and spans above the palm support plate 201. Although it can achieve palm restraint, it only has a good restraining effect on the palm and the four fingers excluding the thumb. The thumb still has some room for movement, and flexible thumb movement may still affect the insertion of the straight tube. In this embodiment, a thumb pressing strip 203 is integrated on the other side of the palm support plate 201. Relying on the deformation characteristics of the thumb pressing strip 203, after the palm pressing plate 202 has been deformed and restrained, the thumb pressing strip 203 can be bent to restrain and limit the movement area of ​​the thumb, further ensuring the stability of the puncture and insertion.

[0033] [Third Embodiment]

[0034] Based on Embodiment 1 above, this embodiment makes one of the optimized designs: two first threading holes 102 are provided on the forearm constraint member 100 near the top opening of the straight groove 101, and a first constraint band 103 passing through the two first threading holes 102 passes through the straight groove 101. First constraint band 103 is provided near the rear end of the straight groove 101, and the first constraint band 103 is a strap or hook and loop fastener.

[0035] As shown in the aforementioned embodiment 1, the forearm can be placed in the straight groove 101 of the forearm restraint member 100 for limiting restraint. However, the upper opening of the straight groove 101 is an open opening. Since the size of the patient's forearm varies, the restraint may not be secure. By designing a first restraint band 103 that runs through the straight groove, the opening can be closed by means of a strap or hook and loop fastener to provide auxiliary restraint for the forearm and prevent the patient's forearm from slipping out.

[0036] Correspondingly, the forearm restraint is relatively long. To improve the restraint effect on the forearm, two second threading holes 104 are provided on the forearm restraint 100 near the top opening of the straight groove 101. A second restraint band 105 that crosses the straight groove 101 is threaded through the two second threading holes 104. The second restraint band 105 is located near the front opening of the straight groove 101 and is a strap or hook and loop fastener.

[0037] [Fourth Embodiment]

[0038] Based on Embodiment 1 above, this embodiment features an optimized design: the forearm restraint member 100 has evenly distributed first ventilation holes 106, the palm support plate 201 has evenly distributed second ventilation holes 2012, and the palm pressing plate 202 has evenly distributed third ventilation holes 2021. This multi-point ventilation hole design improves the skin feel of the patient's forearm and palm, preventing stuffiness and sweating.

[0039] [Fifth Embodiment]

[0040] Based on the above embodiment one, this embodiment makes one of the optimized designs, where the palm support plate 201 and the palm pressing plate 202 are both low-temperature thermoplastic plates, thin metal plates, or elastic silicone plates.

[0041] Among them, the low-temperature thermoplastic plate is a special polymer material, a new type of medical material processed through a series of physical and chemical methods. It remains stable at room temperature and dryness, softens and can be stretched and shaped when heated to around 60 degrees Celsius, and regains its rigidity upon cooling. It boasts outstanding properties such as high shape memory, breathability, waterproofness, non-allergenicity to the skin, and complete gamma ray transmission. If the shaping is unsatisfactory, it can be reshaped by heating or localized heating. The operation is simple and the fixation is convenient. Thin metal plates, such as thin aluminum alloy plates, have excellent shaping and deformation characteristics. They can be shaped according to the patient's forearm and palm shape to provide positioning and restraint for the forearm and palm. Elastic silicone plates have excellent elastic deformation characteristics. In a normal state, the end presses down on the palm support plate. During use, the end of the elastic silicone plate is first lifted until the palm is extended forward, then released. The elastic silicone plate elastically returns to its original position and presses down to clamp the palm area for restraint.

[0042] As one of the optimized designs, when the palm support plate 201 and the palm pressing plate 202 are low-temperature thermoplastic plates, the forearm fixation device also includes an electrothermal shaping component. According to the material characteristics of the low-temperature thermoplastic plate, an electric heating component is directly integrated and installed on the part of the forearm fixation device that needs to be shaped. In this embodiment, the electrothermal shaping component includes an electric heating film strip, a control switch and a power connector connected in sequence. The electric heating film strip has multiple strands and is at least attached to or built into the palm support plate and the palm pressing plate. The heating of the electric heating film strip is started and stopped by operating the control switch, and heat is released to the thermoplastic plate of the corresponding part. After the low-temperature thermoplastic plate becomes hot and softened, it is shaped as needed. The selection of the electric heating film strip, control switch and power connector can refer to common electric heating table mats. The electric heating film strip has a nickel-chromium alloy heating wire, a heat-conducting layer on the side in contact with the low-temperature thermoplastic board, and a heat-insulating layer (aerogel composite non-woven fabric can be selected) on the side in contact with the outside air. Combined with the temperature control chip and temperature sensor, the heating temperature threshold is controlled at 60°~70° to achieve the softening condition of the low-temperature thermoplastic board.

[0043] [Sixth Embodiment]

[0044] Based on the first embodiment described above, this embodiment makes one of the optimized designs: a gripping ball is provided at one end of the palm pressing plate 202 that is folded toward the palm support plate 201. The gripping ball is a hollow sphere.

[0045] The grip ball is designed to improve the user experience. The long, narrow pressure plate has sharp edges and corners at the front, which makes it difficult for patients to grip it with their palms. The grip ball has a smooth surface, which allows patients to better experience touching the screen with their five fingers within a limited range.

[0046] [Seventh Embodiment]

[0047] According to one example of this utility model, such as Figure 1 As shown, the forearm restraint 100 and the palm restraint 200 are formed by bending a single piece of sheet metal.

[0048] The one-piece molding design improves the product's processing efficiency, avoids the use of a large number of connectors for fastening, and results in better overall structural strength of the forearm fixing device.

[0049] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "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 communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0052] For those skilled in the art, various changes and modifications will undoubtedly be apparent after reading the above description. Therefore, the appended claims should be considered as covering all changes and modifications that encompass the true intent and scope of this utility model. Any and all equivalent scope and content within the scope of the claims should be considered as still falling within the intent and scope of this utility model.

Claims

1. A forearm fixation device for radial artery puncture, characterized in that, include: The forearm restraint (100) is provided with a straight groove (101) for inserting the forearm. A palm restraint (200) includes a palm support plate (201) and a palm pressing plate (202). The palm support plate (201) is connected to the forearm restraint member (100) and the connection part is located at the front end of the groove of the straight groove (101). The palm support plate (201) has a raised part (2011) for supporting the back of the wrist. The raised part (2011) is located near the front end of the groove of the straight groove (101) and the top of the raised part (2011) is higher than the bottom of the groove of the straight groove (101) and both ends of the palm support plate (201). One end of the palm pressing plate (202) is located on the side of the palm support plate (201), and the other end of the palm pressing plate (202) is bent upward and suspended above the palm support plate (201). Both the palm support plate (201) and the palm pressing plate (202) are elastic deformation plates or plastic deformation plates.

2. The forearm fixation device for radial artery puncture according to claim 1, characterized in that, The palm support plate (201) is also provided with a thumb pressing strip (203), the thumb pressing strip (203) and the palm pressing plate (202) are arranged opposite to each other on both sides of the palm support plate (201), and the thumb pressing strip (203) is an elastic deformation plate or a plastic deformation plate.

3. The forearm fixation device for radial artery puncture according to claim 1, characterized in that, The forearm restraint member (100) has two first thread holes (102) opposite each other at the top slot of the straight groove (101). A first restraint band (103) that crosses the straight groove (101) is threaded through the two first thread holes (102). The first restraint band (103) is located near the rear slot of the straight groove (101), and the first restraint band (103) is a tie or hook and loop fastener.

4. The forearm fixation device for radial artery puncture according to claim 1, characterized in that, The forearm restraint member (100) has two second thread holes (104) opposite each other at the top slot of the straight groove (101). A second restraint band (105) that crosses the straight groove (101) is threaded through the two second thread holes (104). The second restraint band (105) is located near the front slot of the straight groove (101), and the second restraint band (105) is a tie or hook and loop fastener.

5. A forearm fixation device for radial artery puncture according to claim 1, characterized in that, The forearm restraint (100) is provided with a first ventilation hole (106) evenly distributed, the palm support plate (201) is provided with a second ventilation hole (2012) evenly distributed, and the palm pressing plate (202) is provided with a third ventilation hole (2021) evenly distributed.

6. A forearm fixation device for radial artery puncture according to claim 1, characterized in that, The palm support plate (201) and the palm pressing plate (202) are both low-temperature thermoplastic plates, thin metal plates, or elastic silicone plates.

7. A forearm fixation device for radial artery puncture according to claim 6, characterized in that, When the palm support plate (201) and the palm pressing plate (202) are low-temperature thermoplastic plates, the forearm fixing device further includes an electrothermal shaping component. The electrothermal shaping component includes an electrothermal film strip, a control switch and a power connector connected in sequence. The electrothermal film strip is provided with multiple strands and is at least attached to or built into the palm support plate (201) and the palm pressing plate (202).

8. A forearm fixation device for radial artery puncture according to claim 1, characterized in that, The palm pressing plate (202) has a gripping ball at one end folded toward the palm support plate (201), and the gripping ball is a hollow sphere.

9. A forearm fixation device for radial artery puncture according to claim 1, characterized in that, The forearm restraint (100) and the palm restraint (200) are formed by bending a single piece of sheet metal.

Images