Nursing indwelling needle fixer

Abstract

The invention relates to a nursing indwelling needle fixator, belongs to the technical field of medical instruments, and solves the problem that a nursing indwelling needle is unstable to fix in the prior art. The device comprises a first connecting mechanism, a second connecting mechanism, a third connecting mechanism and an indwelling needle stabilizing mechanism, the front end of the second connecting mechanism is connected with the first connecting mechanism, the rear end of the second connecting mechanism is connected with the third connecting mechanism, the second connecting mechanism is provided with an indwelling needle stabilizing mechanism, and the indwelling needle stabilizing mechanism is used for fixing a Y-shaped connector part of an indwelling needle; the first connecting mechanism is connected to a finger of a patient, the second connecting mechanism is connected to a wrist of the patient, and the third connecting mechanism is connected to an arm of the patient. The first connecting mechanism and the second connecting mechanism are connected to the front portion and the rear portion of the second connecting mechanism respectively, the second connecting mechanism and the remaining needle can be prevented from moving forwards and backwards greatly, and the stability of the fixing position of the remaining needle is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a nursing indwelling needle fixer. Background Art

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

[0003] In the prior art, the indwelling needle is fixed to the patient's wrist by a fixator, and the fixator is fixed to the wrist by tape or a binding strap. During long-term use, the adhesive tape adhesion position is easily soaked by sweat and falls off, while the binding strap fixation is prone to rubbing the wrist due to excessive tightening, or easily falling off due to excessive loosening. Both of these will lead to unstable fixation. Summary of the invention

[0004] In view of the above analysis, an embodiment of 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 fixator, 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, the rear end of the second connecting mechanism is connected to the third connecting mechanism, and the indwelling needle fixing mechanism is provided on the second connecting mechanism, and the indwelling needle fixing 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, a plurality of positioning grooves are provided on the inner wall of the finger ring, the plurality of positioning grooves are evenly arranged along the circumference of the inner wall of the finger ring, and the slip ring is clamped in the positioning grooves.

[0009] Furthermore, the second connection mechanism includes a first semi-annular fixing plate and a second semi-annular fixing plate, and the first semi-annular fixing plate and the second semi-annular fixing plate are buckled at 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, 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 connecting member includes a strap and a Velcro, one end of the strap is connected to one side of the first semi-annular fixing plate, the other end of the strap is provided with a sub-surface of the Velcro, and the main surface of the Velcro is connected to one side of the second semi-annular fixing plate.

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

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

[0014] Furthermore, the third connecting mechanism includes a first ring, a second ring and a staggered connecting rod, and two ends of the staggered connecting rod are respectively hinged to the first ring and the second ring.

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

[0016] Furthermore, it also includes a second adjusting mechanism, and the second connecting mechanism is connected to the third connecting mechanism through the second adjusting 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 at three places, namely the finger, wrist and elbow (arm), the indwelling needle holder can be stably fixed on the patient's arm, so that the indwelling needle is not easy to move forward and backward and is not easy to fall, thereby improving the safety of the use of the indwelling needle; at the same time, the first connecting mechanism supports the front of the second connecting mechanism, thereby preventing the second connecting mechanism and the indwelling needle from being displaced forward to a large extent, and the third connecting mechanism supports the rear of the second connecting mechanism, thereby preventing the second connecting mechanism and the indwelling needle from being displaced backward to a large extent, thereby 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 clamps arranged on both sides of the stabilizing sleeve, a first semi-annular fixing plate is provided with an indwelling needle installation groove, one end of the first elastic member is connected to the side wall of the indwelling needle installation groove, and the other end is connected to the non-open end of the U-shaped clamp, the end of the U-shaped clamp is arranged to slide in the guide groove, the guide groove is conformed to the first semi-annular fixing plate, the guide clamp is connected to the U-shaped opening of the U-shaped clamp and conformed to the guide groove, after the guide clamp is inserted into the U-shaped clamp, it squeezes the first elastic member, so that the indwelling needle and the second connecting mechanism have a certain elastic activity space, when the second connecting mechanism is displaced, the influence on the indwelling needle is small, thereby improving the use safety 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. Both ends of the guide rod are fixed to the front end of the first semi-circular fixing plate. The sliding member is threadedly connected to the guide rod. An adjusting nut is provided on both sides 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 to achieve the adjustment of the spacing or tightness of the first connecting mechanism and the second connecting mechanism, thereby improving the application range of the nursing indwelling needle holder.

[0021] (4) The present invention provides a second adjustment mechanism between the second connecting mechanism and the third connecting mechanism, and the second adjustment mechanism includes a U-shaped connecting member, an L-shaped connecting member and a threaded adjustment rod. Both ends of the threaded adjustment rod are provided with forward and reverse threads. Both ends of the threaded adjustment rod are threadedly connected to the U-shaped connecting member and the L-shaped connecting member respectively. The U-shaped connecting member and the L-shaped connecting member are respectively connected to the first semi-annular fixing plate and the rear end and the first sleeve ring. When the threaded adjustment rod is rotated, the U-shaped connecting member and the L-shaped connecting member are driven to move closer or farther away, thereby realizing the adjustment of the spacing or tightness of the second connecting mechanism and the third connecting mechanism, thereby improving the application scope of the nursing indwelling needle holder.

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

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0025] Figure 1 It is a structural schematic diagram of a nursing indwelling needle holder according to a specific embodiment 1;

[0026] Figure 2 It is a structural schematic diagram of the first connecting mechanism of specific embodiment 1;

[0027] Figure 3 It is a structural schematic diagram of a nursing indwelling needle holder with two branch rods according to a specific embodiment 1;

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

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

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

[0031] Figure 7 It is a structural schematic diagram of a stabilizing mechanism for an indwelling needle with a slotted hole according to a specific embodiment 1;

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

[0033] Fig. 9 It is a structural schematic diagram of the second upper curved plate of specific embodiment 2;

[0034] Fig.10 This is a schematic structural diagram of the second lower curved plate of specific embodiment 2;

[0035] Fig.11 This is a schematic structural diagram of the first upper curved plate of specific embodiment 2;

[0036] Fig.12 is a schematic structural diagram of the third upper curved plate of specific embodiment 2;

[0037] Fig.13 This is a schematic structural diagram of the first lower curved plate of specific embodiment 2;

[0038] Fig.14 is a schematic structural diagram of the third lower curved plate of specific embodiment 2;

[0039] Fig.15 It is a schematic diagram of the connection between the cover plate, the second elastic member, the limiting column and the first arc-shaped rod of the specific embodiment 2;

[0040] Fig.16 This is a schematic diagram of the structure of the limiting column of specific embodiment 2.

[0041] Reference numerals:

[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 plate; 2121-first arc hole; 2122-first clamping groove; 213-second upper arc plate; 2131-first arc rod; 2132-second arc rod; 2133-first arc clamping groove; 2134-second arc clamping groove; 214-third upper arc plate; 2141-second arc hole; 2142-second clamping groove; 22-second semi-circular fixing plate; 221-first lower Arc plate; 2211-third arc hole; 2212-third slot; 222-second lower arc plate; 2221-third arc rod; 2222-fourth arc rod; 2223-third arc slot; 2224-fourth arc slot; 223-third lower arc plate; 2231-fourth arc hole; 2232-fourth slot; 23-first connector; 231-binding strap; 232-Velcro; 24-clamping assembly; 241-first elastic member; 242-U-shaped card plate; 25-arc guide block; 251-second guide slot; 26-limiting column; 261-arc surface; 262-plane; 27-cover plate; 28-second elastic member;

[0044] 3-third connecting mechanism; 31-first ring; 32-second ring; 33-offset connecting rod;

[0045] 4-indwelling needle stabilizing mechanism; 41-stabilizing sleeve; 411-slot hole; 42-guide card plate;

[0046] 5-first adjustment mechanism; 51-second connecting member; 511-main rod; 512-branch rod; 52-sliding member; 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 DESCRIPTION

[0048] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings 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 used to limit the scope of the present invention.

[0049] A specific embodiment of the present invention, as Figure 1 and Figure 3 As shown, a nursing indwelling needle holder 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 is connected to the second connecting mechanism 2, the second connecting mechanism 2 is connected to the third connecting mechanism 3, 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 nursing indwelling needle holder provided in this embodiment has a first connecting mechanism 1 connected to the patient's fingers, 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 at three places, namely the fingers, wrists and elbows (arms), the indwelling needle holder can be stably fixed on the patient's arm, so that the indwelling needle is not easy to move forward and backward, and thus is not easy to fall off, thereby improving the safety of the indwelling needle; at the same time, the first connecting mechanism 1 supports the front of the second connecting mechanism 2, thereby preventing the second connecting mechanism 2 and the indwelling needle 100 from being displaced forward by a large amount, and the third connecting mechanism 3 supports the rear of the second connecting mechanism 2, thereby preventing the second connecting mechanism 2 and the indwelling needle 100 from being displaced backward by a large amount, thereby improving the stability of the fixed position of the indwelling needle.

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

[0052] In order to limit the finger ring 11 and prevent the finger ring 11 from sliding continuously in the slip ring 12, as shown in FIG. Figure 2As shown, the inner wall of the finger ring 11 is provided with a plurality of positioning grooves 111, which are evenly arranged along the inner wall of the finger ring 11. Preferably, there are four positioning grooves 111, which are opposite to each other. The slip ring 12 is clamped in the positioning grooves 111.

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

[0054] Considering that the finger is inserted into the finger ring 11, and the inner wall of the finger ring 11 is provided with a positioning groove 111, in order to avoid scratching the finger, the edges of the finger ring 11 and the slip ring 12 are both rounded. In this embodiment, the inner wall of the finger ring 11 is provided with a positioning groove 111, and the positioning groove 111 is engaged with the slip ring 12 to realize the interlocking connection between the finger 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-annular fixing plate 21 and a second semi-annular fixing plate 22. The first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 are combined at both ends to form a roughly elliptical ring structure to adapt to the patient's wrist.

[0056] In order to facilitate the fixing of the second connecting mechanism 2 to the patient's wrist, Figure 1 and Figure 4 As shown, the second connection mechanism 2 also includes a first connection member 23, and the first connection member 23 includes a strap 231 and a Velcro 232. For example, 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 is provided with a sub-surface of the Velcro 232, and the parent surface of the Velcro 232 is connected to one side of the second semi-annular fixing plate 22. 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. When the first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 are buckled on the patient's wrist, the sub-surface of the Velcro 232 on the strap 231 is bonded and fixed to the parent surface of the Velcro 232. Preferably, the first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 are both made of plastic, preferably made of medical plastic.

[0057] like Figure 3 and Figure 5As shown, a retention needle mounting groove 211 is provided on the first semi-annular fixing plate 21. In order to prevent the component from hitting the patient's wrist and causing pressure sores, the retention needle mounting groove 211 does not penetrate the inner side surface of the first semi-annular fixing plate 21, but extends to one end of the first semi-annular fixing plate 21 away from the first connecting mechanism 1 to facilitate the installation of other components.

[0058] Preferably, the indwelling needle mounting groove 211 is an arc-shaped groove arranged on the outer side surface 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, Figure 5 As shown, the indwelling needle mounting groove 211 forms three wall surfaces and a bottom surface 2114. For the convenience of description, the three walls are respectively 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 to each other, and the third side wall 2113 is perpendicular to 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 fixing mechanism 4, as Figure 3 and Figure 4 As shown, the second connection mechanism 2 also includes a snap-fit ​​assembly 24, which includes a first elastic member 241 and a U-shaped card plate 242. Two U-shaped card plates 242 are provided, and the U-shaped openings of the two U-shaped card plates 242 are arranged opposite to each other. One end of the first elastic member 241 is connected to the side wall of the indwelling needle installation groove 211, and the other end is connected to the non-open end of the U-shaped card plate 242. There are multiple first elastic members 241, and the multiple first elastic members 241 are evenly arranged along the length of the U-shaped card plate 242. The cross-sectional shape and the U-shaped opening of the U-shaped card plate 242 are both in line with the indwelling needle installation groove 211, so that the two U-shaped card plates 242 are close to or away from the bottom surface 2114 of the indwelling needle installation groove 211. The indwelling needle stabilizing mechanism 4 is stuck in the two U-shaped card plates 242.

[0061] Preferably, the first elastic member 241 is an elastic member such as a spring or a spring sheet. It should be noted that the cross section of the U-shaped clamping plate 242 refers to a surface perpendicular to the length direction of the U-shaped clamping plate 242 .

[0062] Considering that the two U-shaped clamping plates 242 need to move along the bottom (i.e., bottom surface 2114) of the indwelling needle installation groove 211, in order to make the two U-shaped clamping plates 242 slide smoothly, as shown in FIG. Figure 5As shown, a first guide groove 2115 is provided on the side wall of the indwelling needle installation groove 211 (perpendicular to the side wall connected with the first elastic member 241), and the first guide groove 2115 is conformed to the inner wall of the first semi-circular fixing plate 21. The end of the U-shaped clamping plate 242 is arranged in the first guide groove 2115, and under the action of the first elastic member 241, the two U-shaped clamping plates 242 move closer to or farther away from each other along the first guide groove 2115.

[0063] For example, in combination Figure 3 and Figure 5 As shown, two U-shaped clamps 242 are arranged between the first side wall 2111 and the second side wall 2112, and the length direction of the U-shaped clamps 242 is the length direction of the first side wall 2111. A plurality of first elastic members 241 are evenly arranged along the length direction of the first side wall 2111. One end of the first elastic member 241 arranged between the U-shaped clamp 242 and the first side wall 2111 is connected to the first side wall 2111, and the other end is connected to the non-open end of the U-shaped clamp 242. Similarly, one end of the first elastic member 241 arranged between the U-shaped clamp 242 and the second side wall 2112 is connected to the second side wall 2112, and the other end is connected to the non-open end of the U-shaped clamp 242. The first guide groove 2115 is provided on the third side wall 2113.

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

[0065] In order to improve the sliding stability of the U-shaped card plate 242, as Figure 3 and Figure 6 As shown, the second connection mechanism 2 also includes an arc-shaped guide block 25, which is in line with the first semi-circular fixing plate 21, and is used to block the end of the indwelling needle installation groove 211. A second guide groove 251 is provided on the inner side of the arc-shaped guide block 25, and the second guide groove 251 is directly opposite to the first guide groove 2115. One end of the U-shaped clamping plate 242 is arranged in the first guide groove 2115, and the other end is arranged in the second guide groove 251. Exemplarily, the arc-shaped guide block 25 is connected to the end of the first semi-circular fixing plate 21 by a screw.

[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 a guide card plate 42. Two guide card plates 42 are provided. The two guide card plates 42 are symmetrically arranged on both sides of the stabilizing sleeve 41. The two guide card plates 42 are respectively connected to the U-shaped openings of the two U-shaped card plates 242. It can be understood that the guide card plates 42 are shaped in accordance with the first guide groove 2115. The indwelling needle stabilizing mechanism 4 slides from the rear end of the indwelling needle installation groove 211 into the U-shaped opening of the U-shaped card plate 242, and then the arc-shaped guide block 25 is connected to the first semi-annular fixing plate 21. The indwelling needle 100 (specifically, the rear end of the indwelling needle 100) is arranged in the stabilizing sleeve 41. After the guide card plate 42 is inserted into the U-shaped card plate 242, it will squeeze the first elastic member 241, so that the indwelling needle 100 and the second connecting mechanism 2 have a certain elastic activity space. When the second connecting mechanism 2 is displaced, the impact on the indwelling needle 100 is small, thereby improving the safety and stability of the indwelling needle 100.

[0067] Further, in order to adapt to different specifications of the indwelling needle 100, such as Figure 7 As shown, a slot 411 is provided on the stabilizing sleeve 41 . The stabilizing sleeve 41 has a certain elasticity, and the rear end of the indwelling needle 100 is clamped by the elasticity of the two lobes of the stabilizing sleeve 41 .

[0068] like Figure 1 and Figure 3 As shown, the third connecting mechanism 3 includes a first ring 31, a second ring 32 and a dislocated connecting rod 33. The first ring 31 and the second ring 32 are both circular rings. The first ring 31 and the second ring 32 are respectively sleeved on the forearm and the back arm at the elbow position. The two ends of the dislocated connecting rod 33 are respectively hinged with the first ring 31 and the second ring 32. Preferably, there are two dislocated connecting rods 33, and the two dislocated connecting rods 33 are spatially cross-arranged. The length of the dislocated connecting rod 33 is greater than the distance between the first ring 31 and the second ring 32 after connection. Preferably, the dislocated connecting rod 33 is made of hard plastic and has a certain deformation ability. The dislocated connecting rod 33 is arc-shaped, and the arc-shaped notch faces the arm. The arc-shaped convex dislocated connecting rod 33 can avoid interference caused by the elbow when the dislocated connecting rod 33 rotates. The dislocated connecting rod 33 can meet the requirements of the distance change between the first ring 31 and the second ring 32.

[0069] In this embodiment, two offset 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 put on the forearm and the second ring 32 is put on the back arm, it can adapt to the bending of the elbow and avoid the discomfort caused by the patient's arm keeping one state (such as straight) for a long time.

[0070] In order to adjust the distance or tightness between the first connecting mechanism 1 and the second connecting mechanism 2, as shown in FIG. Figure 1 and Figure 3 As shown, the nursing indwelling needle holder also includes a first adjustment mechanism 5, which includes a second connecting member 51, a sliding member 52, a guide rod 53 and an adjustment nut 54. The second connecting member 51 includes a main rod 511 and a plurality of branch rods 512. The branch rods 512 are provided with 1-4, which correspond to the finger rings 11. One end of the branch rod 512 is connected to the sliding ring 12, and the other end is connected to the main rod 511. The main rod 511 is connected to the sliding member 52. The sliding member 52 is sleeved on the guide rod 53. It can be understood that the sliding member 52 is provided with a through hole connected to the guide rod 53. The guide rod 53 is provided with a thread. In other words, the guide rod 53 is a threaded rod. The two ends of the guide rod 53 are respectively connected to the end of the first semi-annular fixing plate 21 away from the indwelling needle installation groove 211. The length direction of the guide rod 53 is perpendicular to the length direction of the U-shaped clamping plate 242. There are two adjusting nuts 54 , which are threadedly connected to the guide rod 53 . The two adjusting nuts 54 are respectively disposed 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, both ends of the guide rod 53 are fixed to the front end of the first semi-annular fixed plate 21, the sliding member 52 is threadedly connected to the guide rod 53, and an adjusting nut 54 is provided on both sides 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. By loosening one adjusting nut 54 and screwing the other adjusting nut 54, the position of the sliding member 52 on the guide rod 53 can be adjusted, and then the position of the second connecting member 51 can be adjusted. The finger ring 11 is put on the finger, and the second connecting member 51 is tightened under the drive of the sliding member 52 (in fact, the finger feels the traction brought by the second connecting member 51), and then the locking adjusting nut 54 is tightened to lock the sliding member 52.

[0072] In order to adjust the distance or tightness between the second connecting mechanism 2 and the third connecting mechanism 3, as shown in FIG. Figure 1 and Figure 3 As shown, the nursing indwelling needle holder also includes a second adjustment mechanism 6, which 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-circular fixing plate 21, and the two ends of the U-shaped connector 61 are respectively located on both sides of the indwelling needle installation groove 211. The long rod section of the L-shaped connector 62 is connected to the first ring 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 respectively connected to the short rod sections of the U-shaped connector 61 and the L-shaped connector 62. An adjustment knob 631 is provided in the middle of the threaded adjustment rod 63, and forward and reverse threads are provided on both sides of the adjustment knob 631. The two ends of the threaded adjustment rod 63 are respectively threadedly connected to the U-shaped connector 61 and the L-shaped connector 62.

[0073] Exemplarily, a nut is fixedly provided in the middle of the threaded adjustment rod 63, forward threads and reverse threads 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, both ends of the threaded adjustment rod 63 are provided with forward and reverse threads, and the two ends of the threaded adjustment rod 63 are respectively threadedly connected to the U-shaped connector 61 and the L-shaped connector 62, and the U-shaped connector 61 and the L-shaped connector 62 are respectively connected to the rear end of the first semi-annular fixing plate 21 and the first ring 31. When the threaded adjustment rod 63 is rotated, the U-shaped connector 61 and the L-shaped connector 62 are driven to move closer or farther away. When one of them is fixed, such as fixing the U-shaped connector 61, the L-shaped connector 62 moves closer to or away from the U-shaped connector 61, thereby realizing the adjustment of 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, the first adjustment mechanism 5 and the second adjustment mechanism 6 are both configured as length-adjustable structures, so that the device has a wider application range and higher practicality.

[0076] Example 2

[0077] Another specific embodiment of the present invention discloses a nursing indwelling needle holder, which is different from the first embodiment in that the second connecting mechanism 2 of the first embodiment is optimized in the present embodiment, and the second connecting mechanism 2 of the present embodiment can be suitable for wrists of different thicknesses and for adjustment of tightness.

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

[0079] In this embodiment, the two sides of the second upper curved plate 213 can be clamped with the first upper curved plate 212 and the third upper curved plate 214, and the clamping position of the second upper curved plate 213 with the first upper curved plate 212 and the third upper curved plate 214 can be adjusted to achieve the adjustment of the size of the first semi-annular fixed plate 21, and the two sides of the second lower curved plate 222 can be clamped with the first lower curved plate 221 and the third lower curved plate 223, and the clamping position of the second lower curved plate 222 with the first lower curved plate 221 and the third lower curved plate 223 can be adjusted to achieve the adjustment of the size of the second semi-annular fixed plate 22 to adapt to wrists of different thicknesses, and the tightness of the fixation on the wrist can also be adjusted to make the user feel more comfortable.

[0080] In order to realize the clamping connection between the second upper arc plate 213 and the first upper arc plate 212 and the third upper arc plate 214, Figure 8 and Fig. 9 As shown, the first arc rod 2131 and the second arc rod 2132 are respectively provided on both sides of the second upper arc plate 213. Preferably, the first arc rod 2131 and the second arc rod 2132 are both in the shape of the second upper arc plate 213. Multiple first arc rods 2131 and multiple second arc rods 2132 are provided along the length direction of the second upper arc plate 213. Multiple first arc rods 2131 and multiple second arc rods 2132 are evenly arranged along the length direction of the side of the second upper arc plate 213. Preferably, three first arc rods 2131 and three second arc rods 2132 are each provided. The first arc slots 2133 are evenly arranged along the length direction of the first arc rod 2131, and the second arc slots 2134 are evenly arranged along the length direction of the second arc rod 2132.

[0081] Furthermore, combined with Figure 8 , Fig.11 and Fig.12 As shown, the first upper arc plate 212 is provided with a first arc hole 2121 and a first clamping groove 2122, the first arc hole 2121 is conformed to the first arc rod 2131 and corresponds to the first arc rod 2131 one by one, the first clamping groove 2122 is arranged along the length direction of the first upper arc plate 212 and is connected with the first arc hole 2121, the third upper arc plate 214 is provided with a second arc hole 2141 and a second clamping groove 2142, the second arc hole 2141 is conformed to the second arc rod 2132 and corresponds to the second arc rod 2132 one by one, the second clamping groove 2142 is arranged along the length direction of the third upper arc plate 214 and is connected 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] In order to realize the clamping connection between the second lower arc plate 222 and the first lower arc plate 221 and the third lower arc plate 223, Figure 8 and Fig.10 As shown, the third arc rod 2221 and the fourth arc rod 2222 are respectively provided on both sides of the second lower arc plate 222. Preferably, the third arc rod 2221 and the fourth arc rod 2222 are both in the shape of the second lower arc plate 222. Multiple third arc rods 2221 and the fourth arc rod 2222 are provided along the length direction of the second lower arc plate 222. Multiple third arc rods 2221 and multiple fourth arc rods 2222 are evenly arranged along the length direction of the side of the second lower arc plate 222. Preferably, three third arc rods 2221 and three fourth arc rods 2222 are each provided. Third arc slots 2223 are evenly arranged along the length direction of the third arc rod 2221, and fourth arc slots 2224 are evenly arranged along the length direction of the fourth arc rod 2222.

[0083] Furthermore, combined with Figure 8 , Fig.13 and Fig.14 As shown, the first lower arc plate 221 is provided with a third arc hole 2211 and a third clamping groove 2212, the third arc hole 2211 is conformed with the third arc rod 2221, and corresponds to the third arc rod 2221 one by one, the third clamping groove 2212 is arranged along the length direction of the first lower arc plate 221, and is connected with the third arc hole 2211, the third lower arc plate 223 is provided with a fourth arc hole 2231 and a fourth clamping groove 2232, the fourth arc hole 2231 is conformed with the fourth arc rod 2222, and corresponds to the fourth arc rod 2222 one by one, the fourth clamping groove 2232 is arranged along the length direction of the third lower arc plate 223, and is connected 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 Fig.15 As shown, the second connection mechanism 2 further includes a limiting column 26, a cover plate 27 and a second elastic member 28. Preferably, the second elastic member 28 is a spring. Fig.16 As shown, the limiting column 26 includes an arc surface 261 and a plane 262. The arc surface 261 is used to limit the first arc rod 2131, the second arc rod 2132, the third arc rod 2221 and the fourth arc rod 2222. Specifically, a limiting column 26, a cover plate 27 and a first second elastic member 28 are provided in the first slot 2122, the second slot 2142, the third slot 2212 and the fourth slot 2232. The two ends of the second elastic member 28 respectively abut against the bottom of the cover plate 27 and the plane 262 of the limiting column 26.

[0085] In this embodiment, the first arc rod 2131 is inserted into the first arc hole 2121. Under the action of the second elastic member 28, the arc cylindrical surface of the limiting column 26 can be stuck in the first arc groove 2133. The second arc rod 2132 is inserted into the second arc hole 2141. The arc cylindrical surface of the limiting column 26 can be stuck in the second arc groove 2134. The third arc rod 2221 is inserted into the third arc hole 2211. Under the action of the second elastic member 28, the limiting column 26 can be stuck in the third arc groove 222 3, the fourth arc rod 2222 is inserted into the fourth arc hole 2231, and the cylindrical surface of the limiting column 26 can be stuck in the fourth arc slot 2224. The first upper arc plate 212 and the third upper arc plate 214 are pushed and pulled toward the second upper arc plate 213, and the first lower arc plate 221 and the third lower arc plate 223 are pushed and pulled toward the second lower arc plate 222 to quickly adjust the engagement position, and adjust the tightness and the size of the restricted space. It is convenient and fast, suitable for a wide range of people, and comfortable to wear.

[0086] Furthermore, in order to make the first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 more comfortable to wear on the wrist and also adapt to the thickness of the wrist, the inner sides of the first semi-annular fixing plate 21 and the second semi-annular fixing plate 22 are provided with a soft layer (not shown in the figure), and the soft layer is memory foam or the like.

[0087] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A nursing indwelling needle holder, characterized in that: It comprises a first connecting mechanism (1), a second connecting mechanism (2), a third connecting mechanism (3) and an indwelling needle fixing mechanism (4); The front end of the second connecting mechanism (2) is connected to the first connecting mechanism (1), the rear end of the second connecting mechanism (2) is connected to the third connecting mechanism (3), and the indwelling needle fixing mechanism (4) is provided on the second connecting mechanism (2), and the indwelling needle fixing mechanism (4) is used to fix the Y-shaped interface of the indwelling needle; The first connecting mechanism (1) is connected to the patient's finger, the second connecting mechanism (2) is connected to the patient's wrist, and the third connecting mechanism (3) is connected to the patient's arm.

2. The nursing indwelling needle holder according to claim 1, characterized in that: The first connecting mechanism (1) comprises a finger ring (11) and a slip ring (12); a plurality of positioning grooves (111) are provided on the inner wall of the finger ring (11); the plurality of positioning grooves (111) are evenly arranged along the circumference of the inner wall of the finger ring (11); and the slip ring (12) is clamped in the positioning grooves (111).

3. The nursing indwelling needle holder according to claim 1 or 2, characterized in that: The second connection mechanism (2) comprises a first semi-annular fixing plate (21) and a second semi-annular fixing plate (22), wherein the first semi-annular fixing plate (21) and the second semi-annular fixing plate (22) are buckled on the patient's wrist.

4. The nursing indwelling needle holder according to claim 3, characterized in that: The second connecting mechanism (2) further comprises a first connecting member (23), one side of the first semi-annular fixing plate (21) and one side of the second semi-annular fixing plate (22) are hingedly connected, 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 connected via the first connecting member (23).

5. The nursing indwelling needle holder according to claim 4, characterized in that: The first connecting member (23) comprises a strap (231) and a Velcro (232), one end of the strap (231) is connected to one side of the first semi-annular fixing plate (21), the other end of the strap (231) is provided with a sub-surface of the Velcro (232), and the main surface of the Velcro (232) is connected to one side of the second semi-annular fixing plate (22).

6. The nursing indwelling needle holder according to claim 3, characterized in that: The first semi-annular fixing plate (21) is provided with an indwelling needle installation groove (211), and the indwelling needle stabilizing mechanism (4) is arranged in the indwelling needle installation groove (211).

7. The nursing indwelling needle holder according to claim 6, characterized in that: The indwelling needle stabilizing mechanism (4) comprises a stabilizing sleeve (41) and a guide clamping plate (42), wherein two guide clamping plates (42) are provided, and the two guide clamping plates (42) are symmetrically arranged on both sides of the stabilizing sleeve (41).

8. The nursing indwelling needle holder according to any one of claims 1-2 and 4-7, characterized in that: The third connection mechanism (3) comprises a first sleeve ring (31), a second sleeve ring (32) and a staggered connecting rod (33), and two ends of the staggered connecting rod (33) are respectively hinged to the first sleeve ring (31) and the second sleeve ring (32).

9. The nursing indwelling needle holder according to any one of claims 1-2 and 4-7, characterized in that: It also comprises a first adjusting mechanism (5), and the first connecting mechanism (1) is connected to the second connecting mechanism (2) via the first adjusting mechanism (5).

10. The nursing indwelling needle holder according to any one of claims 1-2 and 4-7, characterized in that: It also comprises a second adjusting mechanism (6), and the second connecting mechanism (2) is connected to the third connecting mechanism (3) via the second adjusting mechanism (6).

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