Blood drawing catheter fixing device

Abstract

The utility model relates to the technical field of medical auxiliary instruments, in particular to a blood drawing catheter fixing device which comprises an upper fixing ring, two sets of compression springs are fixedly connected to the surface of the inner wall of the upper fixing ring, and first telescopic rods are arranged on the outer surfaces of the compression springs on the inner wall of the upper fixing ring. And one end of the first telescopic rod is fixedly connected with an abutting block, and one end of the bottom surface of the upper fixing ring is hinged to a lower fixing ring. One end of the bolt is in threaded connection with the movable block, so that the bolt can adjust the distance between the movable block and the fixed block through threads, the two groups of annular sponges clamp a blood drawing catheter, and the blood drawing catheter is adjusted to a proper distance according to the size of the blood drawing catheter. The blood drawing catheter is clamped and fixed to the inner walls of one sides of the fixed block and the movable block, deformation of the blood drawing catheter caused by too large fixing force is avoided to a certain extent, and the blood drawing catheter can be stably clamped by the fixed block and the movable block.

Description

Technical Field

[0001] The utility model relates to the technical field of medical auxiliary equipment, in particular to a blood drawing catheter fixing device. Background Art

[0002] The hemodialysis room is a medical facility specially designed for hemodialysis treatment for patients with kidney disease. The principle of hemodialysis treatment is to use a series of instruments and equipment to help remove toxins and waste from the patient's blood, thereby achieving treatment for the patient. When drawing blood from the patient, it is generally necessary to use a blood drawing catheter to draw blood from the patient's body.

[0003] When using a blood drawing catheter to draw blood, the existing fixing device is usually fixed by a patch or an elastic band, and the fixing force of the fixing device on the blood drawing catheter cannot be adjusted. A large force may cause the blood drawing catheter to be squeezed and deformed, and too small a force may cause the blood drawing catheter to fall off easily. In addition, the existing fixing device is generally adhered to the patient's skin surface to fix the blood drawing catheter, and most of them are disposable and cannot be used multiple times.

[0004] Therefore, we propose a blood drawing catheter fixing device to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a blood drawing catheter fixing device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blood drawing catheter fixing device, comprising an upper fixing ring, the inner wall surface of the upper fixing ring is fixedly connected with a compression spring, and two groups of compression springs are provided, a first telescopic rod is provided on the outer surface of the compression spring of the inner wall of the upper fixing ring, and one end of the first telescopic rod is fixedly connected with a stop block, one end of the bottom surface of the upper fixing ring is hingedly connected with a lower fixing ring, both sides of the other end of the bottom of the upper fixing ring are provided with snap-fitting openings, and the inner wall of the snap-fitting opening is snap-fitted and slidably connected with a push block, one end of the push block snap-fitted with the inside of the upper fixing ring is provided with a clamping strip, one side of the push block is fixedly connected with a tension spring, and the other end of the tension spring is fixedly connected to the inner wall of the snap-fitting opening provided at the bottom of the upper fixing ring;

[0007] A clamping and fixing device, which is arranged on the upper surface of the upper fixing ring and is used to clamp and fix the blood drawing catheter;

[0008] A clamping device is fixedly connected to one end of the upper surface of the lower fixing ring, and is used to clamp and fix the upper fixing ring and the lower fixing ring.

[0009] Preferably, the first telescopic rod is sleeved on the outer surface of the compression spring, and one end of the first telescopic rod is fixedly connected to the inner wall of the upper fixing ring, and the two groups of the compression spring and the first telescopic rod are arranged in an eight-shaped shape on the inner wall of the upper fixing ring.

[0010] Preferably, the clamping and fixing device includes a fixed block, a bolt is inserted at the middle position of the bottom end of the fixed block, and a bearing is sleeved on the outer surface of the bolt, one end of the bolt is threadedly connected to a moving block, and both ends of the moving block close to the fixed block are fixedly connected to connecting columns, an annular groove is opened at the middle position of the side adjacent to the fixed block, and an annular sponge is arranged on the inner wall of the annular groove.

[0011] Preferably, both ends of the adjacent side of the fixed block and the movable block are provided with insertion grooves, the two groups of connecting columns are inserted into the insertion grooves opened on one side of the fixed block, and a disc is provided at one end of the connecting column inserted into the insertion groove, and the size of the disc is adapted to the size of the inside of the insertion groove.

[0012] Preferably, the locking device includes a connecting block, a second telescopic rod is fixedly connected to the inside of one side of the upper end of the connecting block, and a return spring is sleeved on the outer surface of the second telescopic rod, one end of the second telescopic rod is fixedly connected to the locking block, two ends of the return spring are respectively fixedly connected to the inner wall of the connecting block and one side of the locking block, and an arc-shaped locking block is provided on the other side of the locking block.

[0013] Preferably, a slot is provided on the surface of the arc-shaped strip on one side of the locking block, and the size of the slot is the same as the size of the locking strip at one end of the pushing block.

[0014] Compared with the prior art, the beneficial effects of the utility model are: the utility model;

[0015] By threading one end of the bolt with the moving block, the bolt can adjust the distance between the moving block and the fixed block through the thread, and the two sets of annular sponges are used to clamp the blood drawing catheter. The distance is adjusted to a suitable distance according to the size of the blood drawing catheter, so that the blood drawing catheter is clamped and fixed on the inner wall of one side of the fixed block and the moving block. This avoids deformation of the blood drawing catheter due to excessive fixing force to a certain extent, and also enables the blood drawing catheter to be stably engaged with the fixed block and the moving block.

[0016] The lower fixing ring is moved to insert the engaging device into the engaging opening at one end of the upper fixing ring, so that the engaging block is engaged in the engaging opening of the upper fixing ring through the elasticity of the second telescopic rod, and then with the elasticity of the first telescopic rod, the two sets of abutments are pressed against the patient's arm, so that the clamping and fixing device is fixed above the patient's arm. After use, the lower fixing ring is separated from the upper fixing ring by pushing the pushing block, and it can be fixed for multiple uses later. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 It is a cutaway schematic diagram of the upper fixing ring of the utility model;

[0020] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0021] Figure 4 It is a cutaway schematic diagram of the fixing device of the utility model;

[0022] Figure 5 It is a schematic cross-sectional view of the card and device of the utility model.

[0023] In the figure: 1. upper fixing ring; 2. compression spring; 3. first telescopic rod; 4. stop block; 5. clamping fixture; 51. fixing block; 52. bolt; 53. bearing; 54. moving block; 55. connecting column; 56. annular sponge; 6. lower fixing ring; 7. engaging device; 71. connecting block; 72. second telescopic rod; 73. reset spring; 74. engaging block; 8. pushing block; 9. tension spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-5, the utility model provides an embodiment: a blood drawing catheter fixing device, comprising an upper fixing ring 1, the inner wall surface of the upper fixing ring 1 is fixedly connected with a compression spring 2, and the compression spring 2 is provided with two groups, the outer surface of the compression spring 2 on the inner wall of the upper fixing ring 1 is provided with a first telescopic rod 3, and one end of the first telescopic rod 3 is fixedly connected with a stop block 4, one end of the bottom surface of the upper fixing ring 1 is hingedly connected with a lower fixing ring 6, both sides of the other end of the bottom of the upper fixing ring 1 are provided with a snap-fitting opening, and the inner wall of the snap-fitting opening is snap-fitted and slidably connected with a push block 8, one end of the push block 8 snap-fitted with the inside of the upper fixing ring is provided with a card strip, one side of the push block 8 is fixedly connected with a tension spring 9, and the other end of the tension spring 9 is fixedly connected to the inner wall of the snap-fitting opening opened at the bottom of the upper fixing ring 1;

[0026] A clamping and fixing device 5, which is arranged on the upper surface of the upper fixing ring 1, and is used for clamping and fixing the blood drawing catheter;

[0027] A clamping device 7, the clamping device 7 is fixedly connected to one end of the upper surface of the lower fixing ring 6, and the clamping device 7 is used to clamp and fix the upper fixing ring 1 and the lower fixing ring 6;

[0028] Furthermore, according to the example Figure 1 and Figure 2 As shown, the first telescopic rod 3 is sleeved on the outer surface of the compression spring 2, and one end of the first telescopic rod 3 is fixedly connected to the inner wall of the upper fixing ring 1. The two groups of compression springs 2 and the first telescopic rod 3 are arranged in an eight-shaped shape on the inner wall of the upper fixing ring 1, so that the two groups of resistance blocks 4 can more stably cooperate with the lower fixing ring 6 to press and fix the patient's arm, so that when the patient's arm moves during blood drawing, the fixing device will not fall off.

[0029] Furthermore, according to the example Figure 4 As shown, the clamping and fixing device 5 includes a fixing block 51, a bolt 52 is inserted in the middle position of the bottom end of the fixing block 51, and a bearing 53 is sleeved on the outer surface of the bolt 52, one end of the bolt 52 is threadedly connected to a moving block 54, and both ends of the moving block 54 close to the fixed block 51 are fixedly connected to connecting columns 55, an annular groove is opened in the middle position of the side adjacent to the fixed block 51, and an annular sponge 56 is arranged on the inner wall of the annular groove, so that when the fixed block 51 and the moving block 54 clamp the blood drawing catheter, the annular groove can more stably engage the blood drawing catheter.

[0030] Furthermore, according to the example Figure 4As shown, both ends of the adjacent side of the fixed block 51 and the movable block 54 are provided with insertion grooves, and the two sets of connecting columns 55 are inserted into the insertion grooves provided on one side of the fixed block 51, and a disc is provided at one end of the connecting column 55 inserted into the insertion groove, and the size of the disc is adapted to the size inside the insertion groove, so that when the bolt 52 rotates to move the movable block 54, the movable block 54 will not fall off the fixed block 51 due to excessive rotation of the bolt 52.

[0031] Furthermore, according to the example Figure 5 As shown, the locking device 7 includes a connecting block 71, a second telescopic rod 72 is fixedly connected to the inside of one side of the upper end of the connecting block 71, and a return spring 73 is sleeved on the outer surface of the second telescopic rod 72, one end of the second telescopic rod 72 is fixedly connected to a locking block 74, both ends of the return spring 73 are respectively fixedly connected to the inner wall of the connecting block 71 and one side of the locking block 74, and an arc-shaped locking block is provided on the other side of the locking block 74, so that the second telescopic rod 72 can be more easily locked in the locking opening of the inner wall of the upper fixing ring 1 through the arc-shaped locking block.

[0032] Furthermore, according to the example Figure 3 and Figure 5 As shown, a clamping strip is provided at one end of the push block 8 which is engaged with the interior of the upper fixing ring 1, and a clamping groove is provided on the surface of the arc-shaped strip on one side of the clamping block 74, and the size of the clamping groove is the same as the size of the clamping strip at one end of the push block 8, so that when the clamping block 74 is engaged in the engaging opening inside the upper fixing ring 1, the push block 8 can be engaged with the inside of the clamping groove of the clamping block 74 through the clamping strip at one end, thereby fixing the clamping block 74.

[0033] Working principle: when using the fixing device to fix the blood drawing catheter, the patient's arm is passed through the upper fixing ring 1, and the lower fixing ring 6 is rotated to insert the locking device 7 into the opening at one end of the upper fixing ring 1. At this time, the arc block on one side of the locking block 74 is pushed by the bottom opening of the upper fixing ring 1 to drive the reset spring 73 to contract. When the connecting block 71 completely enters the locking opening of the upper fixing ring 1, the reset spring 73 pushes the locking block 74 through its own elasticity, so that the locking groove opened on one side of the locking block 74 is locked and fixed by the locking block at one end of the pushing block 8. At this time, the patient's arm is against the two groups of blocks 4 on the inner wall of the upper fixing ring 1, so that the compression spring 2 is contracted, and the first telescopic rod 3 pushes the block 4 through its own elasticity, so that The upper fixing ring 1 and the lower fixing ring 6 are fixed on the surface of the patient's arm, and the bolt 52 is turned so that the bolt 52 rotates on the inner wall of the fixing block 51 through the bearing 53. At this time, the moving block 54 moves through the thread. While the moving block 54 moves, it drives the connecting columns 55 at both ends of the moving block 54 to move inside the insertion groove on one side of the fixing block 51. When the moving block 54 moves to a suitable position, the blood drawing catheter is placed into a side wall of the annular sponge 56 on one side of the fixing block 51. After the placement is completed, the bolt 52 is turned in the opposite direction. At this time, the moving block 54 moves toward the fixed block 51. When the annular sponge 56 on one side of the moving block 54 fits the blood drawing catheter, the rotation stops. At this time, the blood drawing catheter is fixed by the clamping fixing device 5.

[0034] After the blood drawing is completed, pull the push block 8 on the inner wall of the two groups of engaging openings of the upper fixing ring 1. At this time, the groove on one side of the engaging block 74 is disengaged from the block on one side of the push block 8, and pull the lower fixing ring 6 to rotate and disengage from the upper fixing ring 1. At this time, the patient's arm is disengaged, release the push block 8, and the tension spring 9 resets the push block 8 by its own elasticity, and the fixing device is disassembled.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A blood drawing catheter fixing device, comprising an upper fixing ring (1), characterized in that: The inner wall surface of the upper fixing ring (1) is fixedly connected with a compression spring (2), and two groups of compression springs (2) are provided. The outer surface of the compression spring (2) on the inner wall of the upper fixing ring (1) is provided with a first telescopic rod (3), and one end of the first telescopic rod (3) is fixedly connected with a stop block (4). One end of the bottom surface of the upper fixing ring (1) is hingedly connected with a lower fixing ring (6). Both sides of the other end of the bottom of the upper fixing ring (1) are provided with a snap-fitting opening, and the inner wall of the snap-fitting opening is snap-fitted and slidably connected with a push block (8). One end of the push block (8) that is snap-fitted with the inside of the upper fixing ring (1) is provided with a clamping strip. One side of the push block (8) is fixedly connected with a tension spring (9), and the other end of the tension spring (9) is fixedly connected to the inner wall of the snap-fitting opening provided at the bottom of the upper fixing ring (1). A clamping and fixing device (5), wherein the clamping and fixing device (5) is arranged on the upper surface of the upper fixing ring (1), and the clamping and fixing device (5) is used to clamp and fix the blood drawing catheter; A snap-fit ​​device (7), wherein the snap-fit ​​device (7) is fixedly connected to one end of the upper surface of the lower fixing ring (6), and the snap-fit ​​device (7) is used to snap-fit ​​and fix the upper fixing ring (1) and the lower fixing ring (6).

2. A blood drawing catheter fixing device according to claim 1, characterized in that: The first telescopic rod (3) is sleeved on the outer surface of the compression spring (2), and one end of the first telescopic rod (3) is fixedly connected to the inner wall of the upper fixing ring (1), and the two groups of the compression spring (2) and the first telescopic rod (3) are arranged in an eight-shaped shape on the inner wall of the upper fixing ring (1).

3. The blood drawing catheter fixing device according to claim 1, characterized in that: The clamping and fixing device (5) comprises a fixing block (51), a bolt (52) is inserted at the middle position of the bottom end of the fixing block (51), and a bearing (53) is sleeved on the outer surface of the bolt (52), one end of the bolt (52) is threadedly connected to a moving block (54), and both ends of the moving block (54) close to the fixing block (51) are fixedly connected to connecting columns (55), and an annular groove is provided at the middle position of the side adjacent to the fixing block (51) of the moving block (54), and an annular sponge (56) is provided on the inner wall of the annular groove.

4. A blood drawing catheter fixing device according to claim 3, characterized in that: Both ends of the fixed block (51) and the movable block (54) adjacent to one another are provided with insertion grooves, and both groups of the connecting posts (55) are inserted into the insertion grooves provided on one side of the fixed block (51), and a disc is provided at one end of the connecting post (55) inserted into the insertion groove, and the size of the disc is adapted to the size of the inside of the insertion groove.

5. The blood drawing catheter fixing device according to claim 1, characterized in that: The locking device (7) comprises a connecting block (71), a second telescopic rod (72) is fixedly connected to the interior of one side of the upper end of the connecting block (71), and a return spring (73) is sleeved on the outer surface of the second telescopic rod (72), one end of the second telescopic rod (72) is fixedly connected to a locking block (74), two ends of the return spring (73) are respectively fixedly connected to the inner wall of the connecting block (71) and one side of the locking block (74), and an arc-shaped locking block is arranged on the other side of the locking block (74).

6. A blood drawing catheter fixing device according to claim 5, characterized in that: A slot is provided on the surface of the arc strip on one side of the locking block (74), and the size of the slot is the same as the size of the locking strip at one end of the pushing block (8).

Images