A care indwelling needle fixator

Abstract

The present application relates to a kind of nursing indwelling needle fixer, belong to medical instrument technical field, solve the problem of nursing indwelling needle fixation instability in prior art.The present application includes first connecting mechanism, second connecting mechanism, third connecting mechanism and indwelling needle stable mechanism;The front end of second connecting mechanism is connected with first connecting mechanism, the rear end of second connecting mechanism is connected with third connecting mechanism, and indwelling needle stable mechanism is arranged on second connecting mechanism, and indwelling needle stable mechanism is used to fix the Y type interface part of indwelling needle;First connecting mechanism is connected on the finger of patient, second connecting mechanism is connected on the wrist of patient, and third connecting mechanism is connected on the arm of patient.The front and rear of second connecting mechanism are respectively connected with first connecting mechanism and second connecting mechanism, can prevent second connecting mechanism and indwelling needle from happening larger displacement forwards and backwards, improve the stability of indwelling needle fixed position.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a nursing indwelling needle fixation device. Background Technology

[0002] Indwelling intravenous catheters, also known as intravenous cannulas, are commonly used medical devices in clinical practice. Their core components include a flexible catheter that can be left in a blood vessel and a stainless steel puncture guide needle core. The use of indwelling catheters can significantly reduce the pain and fear caused to patients by repeated intravenous punctures, and also reduce the workload of medical staff. However, since indwelling catheters need to remain in the patient's vein for a long time, their fixation has always been a key focus of clinical attention.

[0003] In existing technologies, an indwelling needle is fixed to the patient's wrist using a fixator. The fixator is secured to the wrist with tape or bandage. Over time, the tape can easily become soaked with sweat and fall off, while bandage fixation can easily result in the bandage being too tight and causing wrist chafing, or too loose and easily falling off. Both of these can lead to unstable fixation. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a nursing indwelling needle fixator to solve the problem of unstable fixation of existing nursing indwelling needles.

[0005] The present invention provides a nursing indwelling needle fixation device, comprising a first connecting mechanism, a second connecting mechanism, a third connecting mechanism, and an indwelling needle stabilizing mechanism;

[0006] The front end of the second connecting mechanism is connected to the first connecting mechanism, and the rear end of the second connecting mechanism is connected to the third connecting mechanism. The indwelling needle stabilizing mechanism is provided on the second connecting mechanism. The indwelling needle stabilizing mechanism is used to fix the Y-shaped interface part of the indwelling needle.

[0007] The first connecting mechanism is connected to the patient's finger, the second connecting mechanism is connected to the patient's wrist, and the third connecting mechanism is connected to the patient's arm.

[0008] Furthermore, the first connecting mechanism includes a finger ring and a slip ring. The inner wall of the finger ring is provided with a plurality of positioning grooves, which are evenly arranged along the circumference of the inner wall of the finger ring. The slip ring is engaged in the positioning grooves.

[0009] Furthermore, the second connecting mechanism includes a first semi-circular fixing plate and a second semi-circular fixing plate, which are fastened to the patient's wrist.

[0010] Furthermore, the second connecting mechanism also includes a first connecting member, one side of the first semi-annular fixing plate and one side of the second semi-annular fixing plate are hinged together, and the other side of the first semi-annular fixing plate and the other side of the second semi-annular fixing plate are connected through the first connecting member.

[0011] Furthermore, the first connector includes a strap and a Velcro strap. One end of the strap is connected to one side of the first semi-circular fixing plate, and the other end of the strap is provided with a female side of the Velcro strap. The female side of the Velcro strap is connected to one side of the second semi-circular fixing plate.

[0012] Furthermore, the first semi-annular fixing plate is provided with an indwelling needle mounting groove, and the indwelling needle stabilizing mechanism is disposed in the indwelling needle mounting groove.

[0013] Furthermore, the indwelling needle stabilizing mechanism includes a stabilizing sleeve and guide plates, wherein two guide plates are provided, and the two guide plates are symmetrically arranged on both sides of the stabilizing sleeve.

[0014] Furthermore, the third connecting mechanism includes a first collar, a second collar, and a misaligned connecting rod, with both ends of the misaligned connecting rod hinged to the first collar and the second collar, respectively.

[0015] Furthermore, it also includes a first adjustment mechanism, through which the first connecting mechanism is connected to the second connecting mechanism.

[0016] Furthermore, it also includes a second adjustment mechanism, through which the second connecting mechanism is connected to the third connecting mechanism.

[0017] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0018] (1) The first connecting mechanism of the present invention is connected to the patient's finger, the second connecting mechanism is connected to the patient's wrist, the third connecting mechanism is connected to the patient's arm, and the indwelling needle stabilizing mechanism is connected to the second connecting mechanism. By fixing it at three points—finger, wrist, and elbow (arm)—the indwelling needle fixator can be stably fixed on the patient's arm, making it less likely for the indwelling needle to move back and forth or fall off, thus improving the safety of using the indwelling needle. At the same time, the first connecting mechanism provides support in front of the second connecting mechanism, which can prevent the second connecting mechanism and the indwelling needle from moving forward significantly. The third connecting mechanism provides support behind the second connecting mechanism, which can prevent the second connecting mechanism and the indwelling needle from moving backward significantly, thus improving the stability of the indwelling needle fixing position.

[0019] (2) The indwelling needle stabilizing mechanism of the present invention includes a stabilizing sleeve and guide plates disposed on both sides of the stabilizing sleeve. The first semi-annular fixing plate is provided with an indwelling needle mounting groove. One end of the first elastic member is connected to the side wall of the indwelling needle mounting groove, and the other end is connected to the non-open end of the U-shaped plate. The end of the U-shaped plate is provided to slide in the guide groove. The guide groove is conforming to the shape of the first semi-annular fixing plate. The guide plate is connected to the U-shaped opening of the U-shaped plate and conforms to the shape of the guide groove. After the guide plate is inserted into the U-shaped plate, it squeezes the first elastic member, so that the indwelling needle and the second connecting mechanism have a certain elastic movement space. When the second connecting mechanism is displaced, the impact on the indwelling needle is small, which improves the safety of use and installation stability of the indwelling needle.

[0020] (3) The present invention provides a first adjustment mechanism between the first connecting mechanism and the second connecting mechanism. The first adjustment mechanism includes a second connecting member, a sliding member, a guide rod and an adjusting nut. The two ends of the guide rod are fixed to the front end of the first semi-annular fixing plate. The sliding member is threadedly connected to the guide rod. An adjusting nut is provided on each side of the sliding member. One end of the second connecting member is connected to the sliding member and the other end is connected to the slip ring. By adjusting the position of the sliding member on the guide rod, the position of the second connecting member is adjusted, thereby realizing the adjustment of the distance or tightness between the first connecting mechanism and the second connecting mechanism, which improves the applicability of the nursing indwelling needle fixation device.

[0021] (4) The present invention provides a second adjustment mechanism between the second connection mechanism and the third connection mechanism. The second adjustment mechanism includes a U-shaped connector, an L-shaped connector and a threaded adjustment rod. The two ends of the threaded adjustment rod are provided with forward and reverse threads. The two ends of the threaded adjustment rod are respectively threaded to the U-shaped connector and the L-shaped connector. The U-shaped connector and the L-shaped connector are respectively connected to the first semi-annular fixing plate, the rear end and the first collar. When the threaded adjustment rod is rotated, the U-shaped connector and the L-shaped connector are driven to move closer or further away, thereby realizing the adjustment of the distance or tightness between the second connection mechanism and the third connection mechanism, and improving the applicability of the nursing indwelling needle fixation device.

[0022] (5) The two sides of the second upper arc plate of the present invention can be engaged with the first upper arc plate and the third upper arc plate, and the engagement position of the second upper arc plate with the first upper arc plate and the third upper arc plate can be adjusted to realize the adjustment of the size of the first semi-circular fixing plate. The two sides of the second lower arc plate can be engaged with the first lower arc plate and the third lower arc plate, and the engagement position of the second lower arc plate with the first lower arc plate and the third lower arc plate can be adjusted to realize the adjustment of the size of the second semi-circular fixing plate to adapt to wrists of different thicknesses. At the same time, the tightness of the fixing on the wrist can also be adjusted to make the user feel more comfortable.

[0023] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained from what is particularly pointed out in the description and drawings. Attached Figure Description

[0024] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0025] Figure 1 This is a schematic diagram of the nursing indwelling needle fixation device in specific embodiment 1;

[0026] Figure 2 This is a schematic diagram of the structure of the first connecting mechanism in specific embodiment 1;

[0027] Figure 3 This is a schematic diagram of the structure of a nursing indwelling needle fixator with two branch rods according to specific embodiment 1;

[0028] Figure 4 This is a schematic diagram of the end of the second connecting mechanism without the arc-shaped guide block after it is connected to the indwelling needle stabilizing mechanism in specific embodiment 1;

[0029] Figure 5 This is a schematic diagram of the structure of the indwelling needle mounting groove on the first semi-annular fixing plate in specific embodiment 1;

[0030] Figure 6 This is a schematic diagram of the arc-shaped guide block in specific embodiment 1;

[0031] Figure 7 This is a schematic diagram of the slotted needle stabilization mechanism in specific embodiment 1;

[0032] Figure 8 This is a schematic diagram of the second connecting mechanism in specific embodiment 2;

[0033] Figure 9 This is a schematic diagram of the structure of the second upper arc-shaped plate in specific embodiment 2;

[0034] Figure 10 This is a schematic diagram of the structure of the second lower arc-shaped plate in specific embodiment 2;

[0035] Figure 11 This is a schematic diagram of the structure of the first upper arc-shaped plate in specific embodiment 2;

[0036] Figure 12 This is a schematic diagram of the structure of the third upper arc-shaped plate in specific embodiment 2;

[0037] Figure 13 This is a schematic diagram of the structure of the first lower arc-shaped plate in specific embodiment 2;

[0038] Figure 14 This is a schematic diagram of the structure of the third lower arc-shaped plate in specific embodiment 2;

[0039] Figure 15 This is a schematic diagram showing the connection of the cover plate, the second elastic element, the limiting post, and the first arc rod in specific embodiment 2;

[0040] Figure 16 This is a schematic diagram of the limiting post in specific embodiment 2.

[0041] Figure label:

[0042] 1-First connecting mechanism; 11-Finger ring; 111-Positioning groove; 12-Slip ring;

[0043] 2-Second connecting mechanism; 21-First semi-circular fixing plate; 211-Indwelling needle mounting groove; 2111-First side wall; 2112-Second side wall; 2113-Third side wall; 2114-Bottom surface; 2115-First guide groove; 212-First upper arc-shaped plate; 2121-First arc-shaped hole; 2122-First slot; 213-Second upper arc-shaped plate; 2131-First arc-shaped rod; 2132-Second arc-shaped rod; 2133-First arc-shaped slot; 2134-Second arc-shaped slot; 214-Third upper arc-shaped plate; 2141-Second arc-shaped hole; 2142-Second slot; 22-Second semi-circular fixing plate; 221-First lower... Arc-shaped plate; 2211-Third arc-shaped hole; 2212-Third slot; 222-Second lower arc-shaped plate; 2221-Third arc-shaped rod; 2222-Fourth arc-shaped rod; 2223-Third arc-shaped slot; 2224-Fourth arc-shaped slot; 223-Third lower arc-shaped plate; 2231-Fourth arc-shaped hole; 2232-Fourth slot; 23-First connector; 231-Strap; 232-Hook and loop fastener; 24-Activation assembly; 241-First elastic element; 242-U-shaped plate; 25-Arc-shaped guide block; 251-Second guide groove; 26-Limiting post; 261-Arc-shaped surface; 262-Flat surface; 27-Cover plate; 28-Second elastic element;

[0044] 3-Third connecting mechanism; 31-First collar; 32-Second collar; 33-Misaligned connecting rod;

[0045] 4-Indwelling needle stabilizing mechanism; 41-Stabilizing sleeve; 411-Slot; 42-Guide plate;

[0046] 5-First adjusting mechanism; 51-Second connecting piece; 511-Main rod; 512-Branch rod; 52-Sliding piece; 53-Guide rod; 54-Adjusting nut;

[0047] 6-Second adjustment mechanism; 61-U-shaped connector; 62-L-shaped connector; 63-Threaded adjustment rod; 631-Knob; 100-Indwelling needle. Detailed Implementation

[0048] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0049] A specific embodiment of the present invention, such as Figure 1 and Figure 3 As shown, a nursing indwelling needle fixation device is disclosed, including a first connecting mechanism 1, a second connecting mechanism 2, a third connecting mechanism 3, and an indwelling needle stabilizing mechanism 4. The first connecting mechanism 1 and the second connecting mechanism 2 are connected, the second connecting mechanism 2 and the third connecting mechanism 3 are connected, the first connecting mechanism 1 is used to connect to the patient's finger, the second connecting mechanism 2 is used to connect to the patient's wrist, the third connecting mechanism 3 is used to connect to the patient's arm, and the indwelling needle stabilizing mechanism 4 is connected to the second connecting mechanism 2.

[0050] Compared with the prior art, the indwelling needle fixator provided in this embodiment has a first connecting mechanism 1 connected to the patient's finger, a second connecting mechanism 2 connected to the patient's wrist, a third connecting mechanism 3 connected to the patient's arm, and an indwelling needle stabilizing mechanism 4 connected to the second connecting mechanism 2. By fixing it at three points—the finger, wrist, and elbow (arm)—the indwelling needle fixator can be stably fixed on the patient's arm, making it less likely for the indwelling needle to move back and forth, thus preventing it from falling off and improving the safety of using the indwelling needle. At the same time, the first connecting mechanism 1 provides support in front of the second connecting mechanism 2, preventing the second connecting mechanism 2 and the indwelling needle 100 from moving forward significantly, and the third connecting mechanism 3 provides support behind the second connecting mechanism 2, preventing the second connecting mechanism 2 and the indwelling needle 100 from moving backward significantly, thus improving the stability of the indwelling needle fixation position.

[0051] Considering that the first connecting mechanism 1 is used to connect with the patient's finger, such as Figure 1 , Figure 2 and Figure 3 As shown, the first connecting mechanism 1 includes a finger ring 11 and a slip ring 12, with the finger ring 11 and the slip ring 12 sleeved together. There are 1-4 finger rings 11, corresponding to the four fingers excluding the thumb, with at most one finger ring 11 on each finger. Preferably, both the finger ring 11 and the slip ring 12 are circular rings. The diameter of the finger ring 11 is larger than the diameter of the slip ring 12.

[0052] To limit the movement of ring 11 and prevent it from continuously sliding within slip ring 12, such as... Figure 2As shown, the inner wall of the ring 11 is provided with a plurality of positioning grooves 111, which are evenly arranged along the circumference of the inner wall of the ring 11. Preferably, there are four positioning grooves 111, which are opposite each other in pairs. The slip ring 12 is engaged in the positioning grooves 111.

[0053] Furthermore, the thickness of the slip ring 12 is not greater than the groove depth of the positioning groove 111. Preferably, the thickness of the slip ring 12 is equal to the groove depth of the positioning groove 111, so that after the slip ring 12 engages with the positioning groove 111, the slip ring 12 will not protrude too much from the inner ring of the finger ring 11 or from the inner wall of the finger ring 11, so as to avoid affecting the finger inserted into the finger ring 11 (such as causing discomfort to the finger).

[0054] Considering that a finger is inserted into the ring 11 and the inner wall of the ring 11 has a positioning groove 111, the edges of both the ring 11 and the slip ring 12 are rounded to avoid scratching the finger. In this embodiment, a positioning groove 111 is provided on the inner wall of the ring 11, and the positioning groove 111 engages with the slip ring 12 to achieve a snap-fit ​​connection between the ring 11 and the slip ring 12.

[0055] like Figure 1 and Figure 4 As shown, the second connecting mechanism 2 includes a first semi-circular fixing plate 21 and a second semi-circular fixing plate 22. The two ends of the first semi-circular fixing plate 21 and the second semi-circular fixing plate 22 are joined together to form an approximately elliptical ring structure to accommodate the patient's wrist.

[0056] To facilitate securing the second connecting mechanism 2 to the patient's wrist, such as Figure 1 and Figure 4 As shown, the second connecting mechanism 2 further includes a first connecting member 23, which includes a strap 231 and a Velcro 232. Exemplarily, one end of the strap 231 is connected to one side of the first semi-annular fixing plate 21, and the other end of the strap 231 has a male side of the Velcro 232. The female side of the Velcro 232 is connected to one side of the second semi-annular fixing plate 22, and the other side of the first semi-annular fixing plate 21 and the other side of the second semi-annular fixing plate 22 are hinged together. When the first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 are fastened to the patient's wrist, the male side of the Velcro 232 on the strap 231 is bonded and fixed to the female side of the Velcro 232. Preferably, both the first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 are made of plastic, preferably medical-grade plastic.

[0057] like Figure 3 and Figure 5As shown, the first semi-circular fixing plate 21 has an indwelling needle mounting groove 211. In order to avoid the component pressing against the patient's wrist and causing pressure sores, the indwelling needle mounting groove 211 does not penetrate through the inner side of the first semi-circular fixing plate 21, but extends to the end of the first semi-circular fixing plate 21 away from the first connecting mechanism 1, so as to facilitate the installation of other components.

[0058] Preferably, the indwelling needle mounting groove 211 is an arc-shaped groove provided on the outer side of the first semi-annular fixing plate 21. When viewed from one end of the first semi-annular fixing plate 21, the indwelling needle mounting groove 211 is arc-shaped and follows the shape of the first semi-annular fixing plate 21. When viewed from the upper part of the first semi-annular fixing plate 21, the indwelling needle mounting groove 211 is rectangular.

[0059] In this embodiment, as Figure 5 As shown, the indwelling needle mounting groove 211 forms three walls and a bottom surface 2114. For ease of description, the three walls are the first side wall 2111, the second side wall 2112, and the third side wall 2113. The first side wall 2111 and the second side wall 2112 are directly opposite each other, and the third side wall 2113 is perpendicular to both the first side wall 2111 and the second side wall 2112. The bottom surface 2114 is a surface that conforms to the inner wall of the first semi-annular fixing plate 21.

[0060] In order to connect with the indwelling needle stabilization mechanism 4, such as Figure 3 and Figure 4 As shown, the second connecting mechanism 2 also includes a locking assembly 24, which includes a first elastic member 241 and a U-shaped locking plate 242. Two U-shaped locking plates 242 are provided, with their U-shaped openings facing each other. One end of the first elastic member 241 is connected to the side wall of the indwelling needle mounting groove 211, and the other end is connected to the non-open end of the U-shaped locking plate 242. Multiple first elastic members 241 are provided, evenly distributed along the length of the U-shaped locking plate 242. The cross-sectional shape and U-shaped opening of the U-shaped locking plate 242 conform to the shape of the indwelling needle mounting groove 211, allowing the two U-shaped locking plates 242 to move closer to or further away from the bottom surface 2114 of the indwelling needle mounting groove 211. The indwelling needle stabilizing mechanism 4 is locked in the two U-shaped locking plates 242.

[0061] Preferably, the first elastic element 241 is a spring, sheet metal, or other elastic component. It should be noted that the cross-section of the U-shaped clamp 242 refers to the surface perpendicular to the length direction of the U-shaped clamp 242.

[0062] Considering that the two U-shaped clamps 242 need to move along the bottom (i.e., bottom surface 2114) of the indwelling needle mounting groove 211, in order to make the two U-shaped clamps 242 slide smoothly, as follows: Figure 5As shown, a first guide groove 2115 is provided on the side wall of the indwelling needle mounting groove 211 (perpendicular to the side wall connected to the first elastic member 241). The first guide groove 2115 conforms to the inner wall of the first semi-annular fixing plate 21. The ends of the U-shaped clamping plates 242 are located in the first guide groove 2115. Under the action of the first elastic member 241, the two U-shaped clamping plates 242 move closer or further away along the first guide groove 2115.

[0063] For example, combined Figure 3 and Figure 5 As shown, two U-shaped clamping plates 242 are disposed between the first sidewall 2111 and the second sidewall 2112, and the length direction of the U-shaped clamping plates 242 is the same as the length direction of the first sidewall 2111. Multiple first elastic members 241 are evenly arranged along the length direction of the first sidewall 2111. One end of the first elastic member 241 disposed between the U-shaped clamping plate 242 and the first sidewall 2111 is connected to the first sidewall 2111, and the other end is connected to the non-open end of the U-shaped clamping plate 242. Similarly, one end of the first elastic member 241 disposed between the U-shaped clamping plate 242 and the second sidewall 2112 is connected to the second sidewall 2112, and the other end is connected to the non-open end of the U-shaped clamping plate 242. A first guide groove 2115 is formed on the third sidewall 2113.

[0064] Furthermore, in order to stabilize the extension and retraction process of the first elastic element 241, the indwelling needle mounting groove 211 only partially penetrates the outer side of the first semi-annular fixing plate 21 and extends to both sides (viewed from the end of the first semi-annular fixing plate 21, it is a U-shaped groove). The extended space is used to restrict the U-shaped card plate 242 and the first elastic element 241.

[0065] To improve the sliding stability of the U-shaped card plate 242, such as Figure 3 and Figure 6 As shown, the second connecting mechanism 2 also includes an arc-shaped guide block 25, which conforms to the shape of the first semi-annular fixing plate 21. The arc-shaped guide block 25 is used to block the end of the indwelling needle mounting groove 211. A second guide groove 251 is provided on the inner side of the arc-shaped guide block 25, which is directly opposite to the first guide groove 2115. One end of the U-shaped clamping plate 242 is located in the first guide groove 2115, and the other end is located in the second guide groove 251. Exemplarily, the arc-shaped guide block 25 is connected to the end of the first semi-annular fixing plate 21 by screws.

[0066] like Figure 3 and Figure 4As shown, the indwelling needle stabilizing mechanism 4 is used to fix the Y-shaped interface of the indwelling needle. The indwelling needle stabilizing mechanism 4 includes a stabilizing sleeve 41 and guide plates 42. Two guide plates 42 are provided, symmetrically arranged on both sides of the stabilizing sleeve 41. The two guide plates 42 are respectively connected to the U-shaped openings of two U-shaped plates 242. Understandably, the guide plates 42 follow the shape of the first guide groove 2115. The indwelling needle stabilizing mechanism 4 slides into the U-shaped opening of the U-shaped plate 242 from the rear end of the indwelling needle mounting groove 211, and then connects the arc-shaped guide block 25 to the first semi-annular fixing plate 21. The indwelling needle 100 (specifically the rear end of the indwelling needle 100) is disposed in the stabilizing sleeve 41. After the guide plate 42 is inserted into the U-shaped plate 242, it will compress the first elastic element 241, so that the indwelling needle 100 and the second connecting mechanism 2 have a certain elastic movement space. When the second connecting mechanism 2 is displaced, the impact on the indwelling needle 100 is small, which improves the safety and stability of the indwelling needle 100.

[0067] Furthermore, in order to accommodate different specifications of indwelling needles 100, such as Figure 7 As shown, the stabilizing sleeve 41 is provided with a slot 411. The stabilizing sleeve 41 has a certain elasticity, and the elasticity of the two halves of the stabilizing sleeve 41 is used to clamp the rear end of the indwelling needle 100.

[0068] like Figure 1 and Figure 3 As shown, the third connecting mechanism 3 includes a first collar 31, a second collar 32, and a misaligned connecting rod 33. Both the first collar 31 and the second collar 32 are circular rings, respectively fitted onto the forearm and forearm at the elbow position. The two ends of the misaligned connecting rod 33 are hinged to the first collar 31 and the second collar 32, respectively. Preferably, there are two misaligned connecting rods 33, arranged in a spatially intersecting pattern. The length of the misaligned connecting rod 33 is greater than the distance between the first collar 31 and the second collar 32 after connection. Preferably, the misaligned connecting rod 33 is made of hard plastic and has a certain degree of deformation capability. The misaligned connecting rod 33 is arc-shaped, with the arc-shaped notch facing the arm. The outwardly convex arc shape of the misaligned connecting rod 33 can prevent interference from the elbow area when the misaligned connecting rod 33 rotates. The misaligned connecting rod 33 can meet the requirements of changes in the distance between the first collar 31 and the second collar 32.

[0069] In this embodiment, two staggered connecting rods 33 are cross-hinged between the first ring 31 and the second ring 32, so that the first ring 31 and the second ring 32 can meet the distance change. When the first ring 31 is on the forearm and the second ring 32 is on the hind arm, it can adapt to the bending of the elbow and avoid the discomfort caused by the patient's arm being kept in one position for a long time (such as straight).

[0070] To adjust the distance or tightness between the first connecting mechanism 1 and the second connecting mechanism 2, such as Figure 1 and Figure 3 As shown, the nursing indwelling needle fixator also includes a first adjustment mechanism 5, which includes a second connecting member 51, a sliding member 52, a guide rod 53, and an adjusting nut 54. The second connecting member 51 includes a main rod 511 and multiple branch rods 512, with 1-4 branch rods corresponding to the finger rings 11. One end of each branch rod 512 is connected to the slip ring 12, and the other end is connected to the main rod 511. The main rod 511 is connected to the sliding member 52, which is sleeved on the guide rod 53. The sliding member 52 has a through hole for connecting to the guide rod 53. The guide rod 53 is threaded; in other words, it is a threaded rod. Both ends of the guide rod 53 are connected to the ends of the first semi-annular fixing plate 21 furthest from the indwelling needle mounting groove 211. The length direction of the guide rod 53 is perpendicular to the length direction of the U-shaped clamping plate 242. Two adjusting nuts 54 are provided. The adjusting nuts 54 are threadedly connected to the guide rod 53. The two adjusting nuts 54 are respectively located on both sides of the sliding member 52 and abut against both sides of the sliding member 52 to lock the sliding member 52.

[0071] In this embodiment, the two ends of the guide rod 53 are fixed to the front end of the first semi-annular fixing plate 21. The sliding member 52 is threadedly connected to the guide rod 53. An adjusting nut 54 is provided on each side of the sliding member 52. One end of the second connecting member 51 is connected to the sliding member 52, and the other end is connected to the slip ring 12. Loosening one adjusting nut 54 and turning the other adjusting nut 54 can adjust the position of the sliding member 52 on the guide rod 53, thereby adjusting the position of the second connecting member 51. The finger ring 11 is put on the finger, and the second connecting member 51 is tightened under the action of the sliding member 52 (in essence, the finger feels the traction force brought by the second connecting member 51). Then, tightening the locking adjusting nut 54 locks the sliding member 52.

[0072] To adjust the distance or tightness between the second connecting mechanism 2 and the third connecting mechanism 3, such as Figure 1 and Figure 3 As shown, the nursing indwelling needle fixator also includes a second adjustment mechanism 6. The second adjustment mechanism 6 includes a U-shaped connector 61, an L-shaped connector 62, and a threaded adjustment rod 63. The U-shaped connector 61 is connected to the end of the first semi-annular fixing plate 21, and the two ends of the U-shaped connector 61 are located on both sides of the indwelling needle mounting groove 211. The long rod section of the L-shaped connector 62 is connected to the first collar 31, and the end rod section of the L-shaped connector 62 is on the arm side. The two ends of the threaded adjustment rod 63 are connected to the short rod sections of the U-shaped connector 61 and the L-shaped connector 62, respectively. An adjustment knob 631 is provided in the middle of the threaded adjustment rod 63, and the two sides of the adjustment knob 631 are provided with forward and reverse threads. The two ends of the threaded adjustment rod 63 are threadedly connected to the U-shaped connector 61 and the L-shaped connector 62, respectively.

[0073] For example, a nut is fixedly provided in the middle of the threaded adjusting rod 63, and a forward thread and a reverse thread are respectively provided on both sides of the first nut. A second connecting nut is fixedly provided at the bottom of the U-shaped connector 61, and a second connecting nut is provided on the short rod section of the U-shaped connector 61.

[0074] In this embodiment, the threaded adjusting rod 63 has forward and reverse threads at both ends. The two ends of the threaded adjusting rod 63 are threadedly connected to the U-shaped connector 61 and the L-shaped connector 62, respectively. The U-shaped connector 61 and the L-shaped connector 62 are connected to the rear end of the first semi-annular fixing plate 21 and the first collar 31, respectively. When the threaded adjusting rod 63 is rotated, the U-shaped connector 61 and the L-shaped connector 62 are moved closer or further away. When one of them is fixed, such as fixing the U-shaped connector 61, the L-shaped connector 62 moves closer or further away from the U-shaped connector 61, thereby adjusting the distance between the second connecting mechanism 2 and the third connecting mechanism 3. At the same time, when adjusting the distance between the second connecting mechanism 2 and the third connecting mechanism 3, the tightness of the two is also adjusted accordingly.

[0075] In this embodiment, both the first adjustment mechanism 5 and the second adjustment mechanism 6 are configured with adjustable lengths, making the device more widely applicable and more practical.

[0076] Example 2

[0077] Another specific embodiment of the present invention discloses a nursing indwelling needle fixator. The difference from embodiment 1 is that the structure of the second connecting mechanism 2 of embodiment 1 has been optimized in this embodiment. The second connecting mechanism 2 of this embodiment can be adapted to wrists of different thicknesses and the tightness adjustment.

[0078] like Figure 8 As shown, the first semi-annular fixing plate 21 includes a first upper arc-shaped plate 212, a second upper arc-shaped plate 213, and a third upper arc-shaped plate 214. The second semi-annular fixing plate 22 includes a first lower arc-shaped plate 221, a second lower arc-shaped plate 222, and a third lower arc-shaped plate 223. One side of the first upper arc-shaped plate 212 is hinged to one side of the first lower arc-shaped plate 221. One side of the second upper arc-shaped plate 213 is snapped into the other side of the first upper arc-shaped plate 212. The other side of the second upper arc-shaped plate 213 is snapped into one side of the third upper arc-shaped plate 214. The other side of the first lower arc-shaped plate 221 is snapped into one side of the second lower arc-shaped plate 222. The other side of the second lower arc-shaped plate 222 is snapped into one side of the third lower arc-shaped plate 223. The other side of the third lower arc-shaped plate 223 is connected to the other side of the third upper arc-shaped plate 214 via Velcro 232. It should be noted that the indwelling needle stabilizing mechanism 4 is correspondingly installed on the second upper arc-shaped plate 213.

[0079] In this embodiment, the two sides of the second upper arc plate 213 can be engaged with the first upper arc plate 212 and the third upper arc plate 214, and the engagement position of the second upper arc plate 213 with the first upper arc plate 212 and the third upper arc plate 214 can be adjusted to adjust the size of the first semi-annular fixing plate 21. The two sides of the second lower arc plate 222 can be engaged with the first lower arc plate 221 and the third lower arc plate 223, and the engagement position of the second lower arc plate 222 with the first lower arc plate 221 and the third lower arc plate 223 can be adjusted to adjust the size of the second semi-annular fixing plate 22 to accommodate wrists of different thicknesses. At the same time, the tightness of the fixing on the wrist can also be adjusted to make the user feel more comfortable.

[0080] In order to achieve the snap-fit ​​connection between the second upper arc plate 213 and the first upper arc plate 212 and the third upper arc plate 214, combined with Figure 8 and Figure 9 As shown, a first arc-shaped rod 2131 and a second arc-shaped rod 2132 are respectively provided on both sides of the second upper arc-shaped plate 213. Preferably, both the first arc-shaped rod 2131 and the second arc-shaped rod 2132 conform to the shape of the second upper arc-shaped plate 213. Multiple first arc-shaped rods 2131 and multiple second arc-shaped rods 2132 are provided along the length direction of the second upper arc-shaped plate 213. The multiple first arc-shaped rods 2131 and multiple second arc-shaped rods 2132 are evenly arranged along the side length direction of the second upper arc-shaped plate 213. Preferably, there are three first arc-shaped rods 2131 and three second arc-shaped rods 2132. A first arc-shaped groove 2133 is evenly provided along the length direction of the first arc-shaped rod 2131, and a second arc-shaped groove 2134 is evenly provided along the length direction of the second arc-shaped rod 2132.

[0081] Furthermore, combined Figure 8 , Figure 11 and Figure 12 As shown, the first upper arc plate 212 is provided with a first arc hole 2121 and a first slot 2122. The first arc hole 2121 follows the shape of the first arc rod 2131 and corresponds one-to-one with the first arc rod 2131. The first slot 2122 is set along the length direction of the first upper arc plate 212 and communicates with the first arc hole 2121. The third upper arc plate 214 is provided with a second arc hole 2141 and a second slot 2142. The second arc hole 2141 follows the shape of the second arc rod 2132 and corresponds one-to-one with the second arc rod 2132. The second slot 2142 is set along the length direction of the third upper arc plate 214 and communicates with the second arc hole 2141. The first arc rod 2131 is inserted into the first arc hole 2121, and the second arc rod 2132 is inserted into the second arc hole 2141.

[0082] To achieve the snap-fit ​​connection between the second lower arc plate 222 and the first lower arc plate 221 and the third lower arc plate 223, combined with Figure 8 and Figure 10 As shown, a third arc-shaped rod 2221 and a fourth arc-shaped rod 2222 are respectively provided on both sides of the second lower arc-shaped plate 222. Preferably, both the third arc-shaped rod 2221 and the fourth arc-shaped rod 2222 follow the shape of the second lower arc-shaped plate 222. Multiple third arc-shaped rods 2221 and multiple fourth arc-shaped rods 2222 are provided along the length direction of the second lower arc-shaped plate 222. The multiple third arc-shaped rods 2221 and multiple fourth arc-shaped rods 2222 are evenly arranged along the side length direction of the second lower arc-shaped plate 222. Preferably, there are three third arc-shaped rods 2221 and three fourth arc-shaped rods 2222. A third arc-shaped groove 2223 is evenly provided along the length direction of the third arc-shaped rod 2221, and a fourth arc-shaped groove 2224 is evenly provided along the length direction of the fourth arc-shaped rod 2222.

[0083] Furthermore, combined Figure 8 , Figure 13 and Figure 14 As shown, the first lower arc plate 221 is provided with a third arc hole 2211 and a third slot 2212. The third arc hole 2211 follows the shape of the third arc rod 2221 and corresponds one-to-one with the third arc rod 2221. The third slot 2212 is set along the length direction of the first lower arc plate 221 and communicates with the third arc hole 2211. The third lower arc plate 223 is provided with a fourth arc hole 2231 and a fourth slot 2232. The fourth arc hole 2231 follows the shape of the fourth arc rod 2222 and corresponds one-to-one with the fourth arc rod 2222. The fourth slot 2232 is set along the length direction of the third lower arc plate 223 and communicates with the fourth arc hole 2231. The third arc rod 2221 is inserted into the third arc hole 2211, and the fourth arc rod 2222 is inserted into the fourth arc hole 2231.

[0084] like Figure 15 As shown, the second connecting mechanism 2 also includes a limiting post 26, a cover plate 27, and a second elastic element 28. Preferably, the second elastic element 28 is a spring. Figure 16 As shown, the limiting post 26 includes an arc-shaped surface 261 and a flat surface 262. The arc-shaped surface 261 is used to limit the first arc-shaped rod 2131, the second arc-shaped rod 2132, the third arc-shaped rod 2221, and the fourth arc-shaped rod 2222. Specifically, each of the first slot 2122, the second slot 2142, the third slot 2212, and the fourth slot 2232 is provided with a limiting post 26, a cover plate 27, and a first second elastic member 28. The two ends of the second elastic member 28 abut against the bottom of the cover plate 27 and the flat surface 262 of the limiting post 26, respectively.

[0085] In this embodiment, the first arc-shaped rod 2131 is inserted into the first arc-shaped hole 2121. Under the action of the second elastic member 28, the arc-shaped cylindrical surface of the limiting post 26 can be locked in the first arc-shaped slot 2133. The second arc-shaped rod 2132 is inserted into the second arc-shaped hole 2141, and the arc-shaped cylindrical surface of the limiting post 26 can be locked in the second arc-shaped slot 2134. The third arc-shaped rod 2221 is inserted into the third arc-shaped hole 2211, and the limiting post 26 can be locked in the third arc-shaped slot 222 under the action of the second elastic member 28. In step 3, the fourth arc-shaped rod 2222 is inserted into the fourth arc-shaped hole 2231, and the cylindrical surface of the limiting post 26 can be locked in the fourth arc-shaped slot 2224. Pushing and pulling the first upper arc-shaped plate 212 and the third upper arc-shaped plate 214 toward the second upper arc-shaped plate 213, and pushing and pulling the first lower arc-shaped plate 221 and the third lower arc-shaped plate 223 toward the second lower arc-shaped plate 222, can quickly adjust the locking position, adjust the tightness and the size of the restricted space. It is convenient and quick, suitable for a wide range of people, and comfortable to wear.

[0086] Furthermore, in order to make the first semi-circular fixing plate 21 and the second semi-circular fixing plate 22 more comfortable to wear on the wrist and also adaptable to the thickness of the wrist, the inner side of the first semi-circular fixing plate 21 and the second semi-circular fixing plate 22 are provided with a soft layer (not shown in the figure), such as memory foam.

[0087] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A nursing indwelling needle fixator, characterized in that, It includes a first connecting mechanism, a second connecting mechanism, a third connecting mechanism, an indwelling needle stabilizing mechanism, a first adjusting mechanism, and a second adjusting mechanism; the front end of the second connecting mechanism is connected to the first connecting mechanism, and the rear end of the second connecting mechanism is connected to the third connecting mechanism. The indwelling needle stabilizing mechanism is provided on the second connecting mechanism to fix the Y-shaped interface of the indwelling needle; the first connecting mechanism is connected to the patient's finger, the second connecting mechanism is connected to the patient's wrist, and the third connecting mechanism is connected to the patient's arm; the first connecting mechanism is connected to the second connecting mechanism via the first adjusting mechanism, and the second connecting mechanism is connected to the third connecting mechanism via the second adjusting mechanism; the first... The connecting mechanism includes a slip ring; the second connecting mechanism includes a first semi-circular fixing plate and a second semi-circular fixing plate, the first semi-circular fixing plate being provided with an indwelling needle mounting groove; the third connecting mechanism includes a first collar, a second collar, and a misaligned connecting rod, the first collar and the second collar being respectively fitted onto the forearm and the upper arm at the elbow position, and the two ends of the misaligned connecting rod being hinged to the first collar and the second collar respectively; there are two misaligned connecting rods, which are spatially intersecting; the length of the misaligned connecting rod is greater than the distance between the first collar and the second collar after connection; the misaligned connecting rod is made of hard plastic and has a certain deformation capacity; the misaligned connecting rod is arc-shaped, with the arc-shaped notch facing the arm; The first adjustment mechanism includes a second connector, a sliding member, a guide rod, and an adjusting nut. The second connector includes a main rod and multiple branch rods. One end of each branch rod is connected to a slip ring, and the other end is connected to the main rod. The main rod is connected to the sliding member, which is sleeved on the guide rod. The adjusting nut is threadedly connected to the guide rod. Two adjusting nuts are respectively located on both sides of the sliding member and abut against both sides of the sliding member. The two ends of the guide rod are respectively connected to the ends of the first semi-annular fixing plate away from the indwelling needle mounting groove. The second adjustment mechanism includes a U-shaped connector, an L-shaped connector, and a threaded adjusting rod. The U-shaped connector is connected to the end of the first semi-annular fixing plate. The long rod section of the L-shaped connector is connected to the first collar. The two ends of the threaded adjusting rod are respectively connected to the short rod sections of the U-shaped connector and the L-shaped connector. An adjusting knob is provided in the middle of the threaded adjusting rod. The first semi-circular fixing plate includes a first upper arc plate, a second upper arc plate, and a third upper arc plate. The two sides of the second upper arc plate can be engaged with the first upper arc plate and the third upper arc plate, and the engagement position of the second upper arc plate with the first upper arc plate and the third upper arc plate can be adjusted. The second semi-circular fixing plate includes a first lower arc plate, a second lower arc plate, and a third lower arc plate. The two sides of the second lower arc plate can be engaged with the first lower arc plate and the third lower arc plate, and the engagement position of the second lower arc plate with the first lower arc plate and the third lower arc plate can be adjusted. The second upper arc plate has a first arc rod and a second arc rod on both sides, and a first arc groove and a second arc groove are evenly provided along the length of the first arc rod and the second arc rod, respectively. The first upper arc plate has a first arc hole and a first groove, and the first arc rod is inserted into the first arc hole. The third upper arc plate has a second arc hole and a second groove, and the second arc rod is inserted into the second arc hole. A limiting post, a cover plate and a second elastic element are provided in both the first groove and the second groove. Under the action of the second elastic element, the arc-shaped cylindrical surface of the limiting post can be locked in the first arc groove and the second arc groove. The second connecting mechanism also includes a locking assembly, which includes a first elastic element and a U-shaped locking plate. The indwelling needle stabilizing mechanism includes a guide locking plate. One end of the first elastic element is connected to the side wall of the indwelling needle mounting groove, and the other end is connected to the non-open end of the U-shaped locking plate. After the guide locking plate is inserted into the U-shaped locking plate, it squeezes the first elastic element, so that the indwelling needle and the second connecting mechanism have a certain elastic movement space.

2. The nursing indwelling needle fixator according to claim 1, characterized in that, The first connecting mechanism also includes a finger ring, on the inner wall of which are provided multiple positioning grooves. The multiple positioning grooves are evenly arranged along the circumference of the inner wall of the finger ring, and the slip ring is engaged in the positioning grooves.

3. The nursing indwelling needle fixator according to claim 1 or 2, characterized in that, The first and second semi-circular fixation plates are fastened to the patient's wrist.

4. The nursing indwelling needle fixator according to claim 3, characterized in that, The second connecting mechanism also includes a first connecting member, one side of the first semi-circular fixing plate and one side of the second semi-circular fixing plate are hinged together, and the other side of the first semi-circular fixing plate and the other side of the second semi-circular fixing plate are connected by the first connecting member.

5. The nursing indwelling needle fixator according to claim 4, characterized in that, The first connector includes a strap and a Velcro fastener. One end of the strap is connected to one side of the first semi-circular fixing plate, and the other end of the strap has a Velcro fastener female side. The Velcro fastener female side is connected to one side of the second semi-circular fixing plate.

6. The nursing indwelling needle fixator according to claim 3, characterized in that, The indwelling needle stabilization mechanism is located in the indwelling needle mounting slot.

7. The nursing indwelling needle fixator according to claim 6, characterized in that, The indwelling needle stabilization mechanism also includes a stabilizing sleeve, and two guide plates are provided, which are symmetrically arranged on both sides of the stabilizing sleeve.

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