Hemodialysis catheter fixing device

Abstract

The utility model relates to the field of medical auxiliary instruments, in particular to a hemodialysis catheter fixing device which comprises a fixing support, vertical plates are arranged on the two sides of the fixing support in the length direction, and the hemodialysis catheter fixing device further comprises a synchronous fixing mechanism used for synchronously fixing a dialysis blood collection tube and a dialysis backflow tube. The synchronous fixing mechanism comprises a different-direction transmission screw, a first offset sliding block, a second offset sliding block, a support sliding rail, a movable clamping block and a fixed clamping block. In the hemodialysis process, a hemodialysis blood collection tube and a hemodialysis return tube penetrate through semicircular grooves of movable clamping blocks and fixed clamping blocks on the two sides of a fixing support respectively, a different-direction transmission screw rod rotates, the hemodialysis blood collection tube and the hemodialysis return tube are synchronously limited as the two movable clamping blocks get close to the fixed clamping blocks at the corresponding positions of the hemodialysis blood collection tube and the hemodialysis return tube, and the hemodialysis blood collection tube and the hemodialysis return tube are fixed. The dialysis blood collection tube and the dialysis return tube are prevented from accidentally shifting or falling off in the treatment process, the operation process is simplified, and the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical auxiliary instrument field especially, and it is a kind of hemodialysis catheter fixing device. BACKGROUND

[0002] Hemodialysis is a method for treating renal failure, the blood of patient is led out of body through a catheter, waste and excess water in body are filtered out through dialysis machine, then clean blood is input into body, and hemodialysis catheter fixing device is a kind of medical auxiliary instrument, is used to fix and protect the dialysis catheter of patient during hemodialysis.

[0003] According to Chinese authorized patent announcement number: CN221618305U, a kind of catheter fixing device for hemodialysis nursing is disclosed, including support plate, the support plate top four corners are all fixedly connected with two support blocks, the support block top is all fixedly connected with connecting block, the connecting block top inner wall is all threadedly connected with first screw rod, the first screw rod bottom is all rotatably connected with first arc fixed block, the first screw rod top is all fixedly connected with first handle, the first arc fixed block left and right ends are all fixedly connected with sliding block, the first arc fixed block bottom is all fixedly connected with first non-slip pad. By driving first non-slip pad to move downwards, catheter is fixed, different specifications of catheter can be fixed, prevent long catheter from falling off in the process of use, because of improper operation of medical staff or patient's family member, affect the normal progress of treatment, but the hemodialysis catheter fixing device still has deficiencies, in the process of hemodialysis, since hemodialysis needs to realize blood circulation, thus usually involves two catheters, one is used for blood sampling, and the other is used for blood backflow, and the above-mentioned hemodialysis catheter fixing device needs medical staff to manually fix two catheters when fixing catheter, needs to spend more time. UTILITY MODEL CONTENT

[0004] In view of the deficiencies of the prior art, the utility model provides a kind of hemodialysis catheter fixing device, solve the problem that hemodialysis catheter fixing device needs medical staff to manually fix two catheters when fixing catheter, needs to spend more time.

[0005] To achieve the above object, the utility model is realized by the following technical scheme:

[0006] A kind of hemodialysis catheter fixing device, including fixed support, the length direction of fixed support two sides is respectively set up vertical plate, still include synchronous fixing mechanism, for synchronously realizing the fixing of dialysis blood sampling tube and dialysis backflow pipe;

[0007] The synchronous fixing mechanism includes opposite transmission screw rod, offset sliding block one, offset sliding block two, bracket slide rail, movable clamping block and fixed clamping block.

[0008] The two ends of the opposite transmission screw are rotationally connected to the vertical plates on the two sides of the fixed support, the two sides of the opposite transmission screw are provided with thread structures with opposite rotation directions, the two sides of the opposite transmission screw are threadedly connected to offset sliding blocks one and two, and the lower ends of the offset sliding blocks one and two are slidingly connected to the support sliding rails arranged on the upper surface of the fixed support.

[0009] The upper surfaces of the offset sliding blocks one and two are fixedly connected with fixed plates, and the inner sides of the two fixed plates are fixedly connected with movable clamping blocks.

[0010] The inner sides of the two vertical plates are fixedly connected with the fixed clamping blocks, and the opposite sides of the movable clamping blocks and the fixed clamping blocks are provided with semicircular grooves.

[0011] Further, the synchronous fixing mechanism further comprises a fixed torsion ring and a connecting column, the fixed torsion ring is located on the outer side of the vertical plate, the outer side of the fixed torsion ring is fixedly connected with the connecting column, and one end of the opposite transmission screw is connected with the fixed torsion ring.

[0012] Further, the two ends of the opposite transmission screw are light rods, and the opposite transmission screw is connected with the through holes arranged on the corresponding vertical plate through a bearing.

[0013] Further, the semicircular grooves of the movable clamping blocks and the fixed clamping blocks are provided with buffer pads.

[0014] Further, the opposite sides of the fixed plates and the vertical plates are provided with shaft sleeves, the inner side of the vertical plate is provided with a guide shaft, and the shaft sleeve is sleeved on the guide shaft.

[0015] Further, the locking and limiting mechanism comprises a rotating column, a torsional spring and a pawl.

[0016] Further, the locking and limiting mechanism comprises a rotating column, a torsional spring and a pawl.

[0017] The rotating column is rotationally connected to the outer side of the vertical plate, the outer side of the rotating column is fixedly connected with the pawl, the torsional spring is sleeved between the rotating column and the vertical plate, one end of the torsional spring is in contact with the outer side of the pawl, the other end of the torsional spring extends into a pre-set groove on the vertical plate, and the outer surface of the fixed torsion ring is surrounded by a plurality of ratchets.

[0018] Further, a plurality of mounting plates are fixedly connected to the vertical plate, and mounting holes are arranged in the mounting plates.

[0019] Beneficial effects

[0020] The blood dialysis catheter fixing device provided by the application has the following beneficial effects compared with the prior art:

[0021] By setting the synchronous fixing mechanism, in the process of hemodialysis, the dialysis blood collection tube and the dialysis return tube are respectively inserted into the semicircular grooves of the movable clamping blocks and the fixed clamping blocks on both sides of the fixing support, the medical staff makes the opposite transmission screw rotate, and then makes the offset sliding block one and the offset sliding block two move to the outside direction, with the two movable clamping blocks approaching the fixed clamping blocks corresponding to their own positions, the dialysis blood collection tube and the dialysis return tube are synchronously limited, and accidental displacement or falling of the dialysis blood collection tube and the dialysis return tube during treatment is prevented, in this way, the medical staff only needs to twist the opposite transmission screw to complete the synchronous fixing of the two pipelines, which simplifies the operation process and improves the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 A side perspective structural schematic view of the blood dialysis catheter fixing device provided by the present application;

[0023] Figure 2 Another side perspective structural schematic view of the blood dialysis catheter fixing device provided by the present application;

[0024] Figure 3 A structure schematic view of the blood dialysis catheter fixing device provided by the present application from an oblique upper side;

[0025] Figure 4 The blood dialysis catheter fixing device provided by the present application Figure 2 An enlarged view of A in the blood dialysis catheter fixing device provided by the present application.

[0026] LEGEND:

[0027] 1, fixing support; 11, vertical plate; 12, shaft sleeve; 13, guide shaft; 2, synchronous fixing mechanism; 201, opposite transmission screw; 202, offset sliding block one; 203, offset sliding block two; 204, support sliding rail; 205, fixed torsion ring; 206, connecting column; 207, ratchet; 208, fixed plate; 209, movable clamping block; 3, dialysis blood collection tube; 4, dialysis return tube; 5, locking limiting mechanism; 501, rotating column; 502, torsional spring; 503, ratchet pawl; 6, mounting plate; 7, mounting hole; 8, fixed clamping block. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] Please refer toFigures 1-4 The application relates to a hemodialysis catheter fixing device which comprises a fixing support 1, and vertical plates 11 arranged on the two sides of the fixing support 1 in the length direction of the fixing support 1 and used for supporting.

[0030] The catheter fixing device further comprises a synchronous fixing mechanism 2 used for synchronously fixing a hemodialysis blood sampling tube 3 and a hemodialysis return tube 4.

[0031] Specifically, the synchronous fixing mechanism 2 comprises a reverse transmission screw 201, offset sliding blocks one 202, offset sliding blocks two 203, movable clamping blocks 209 and fixed clamping blocks 8.

[0032] The two ends of the reverse transmission screw 201 are rotatably connected to the vertical plates 11 on the two sides of the fixing support 1, that is,

[0033] The two ends of the reverse transmission screw 201 are light bars and are connected to the through holes arranged on the corresponding vertical plates 11 through bearings, so that the two ends of the reverse transmission screw 201 can rotate relative to the vertical plates 11.

[0034] In addition, the reverse transmission screw 201 is provided with thread structures with opposite rotation directions on the two sides, and the offset sliding blocks one 202 and the offset sliding blocks two 203 are threadedly connected to the two sides of the reverse transmission screw 201, that is, the middle parts of the offset sliding blocks one 202 and the offset sliding blocks two 203 are provided with threaded holes; the offset sliding blocks one 202 are connected to the first thread on the reverse transmission screw 201 through the threaded holes, and the offset sliding blocks two 203 are connected to the second thread on the reverse transmission screw 201 through the threaded holes.

[0035] The lower ends of the offset sliding blocks one 202 and the offset sliding blocks two 203 are slidably connected to support sliding rails 204 arranged on the upper surface of the fixing support 1; for example, recesses are arranged on the lower parts of the offset sliding blocks one 202 and the offset sliding blocks two 203 and used for cooperating with the support sliding rails 204, so that the two sliding blocks can only move along the length direction of the support sliding rails 204.

[0036] In addition, the upper surfaces of the offset sliding blocks one 202 and the offset sliding blocks two 203 are fixedly connected with fixing plates 208, and the inner sides of the two fixing plates 208 are fixedly connected with movable clamping blocks 209; the inner sides of the two vertical plates 11 are fixedly connected with corresponding fixed clamping blocks 8, and the opposite sides of the movable clamping blocks 209 and the fixed clamping blocks 8 are provided with semicircular grooves, so that the two semicircular grooves are used for clamping the pipelines when the movable clamping blocks 209 are close to the fixed clamping blocks 8.

[0037] In practical applications, such as during hemodialysis, the dialysis blood collection tube 3 and the dialysis return tube 4 are passed through the semi-circular grooves of the movable locking blocks 209 and the fixed locking blocks 8 on both sides of the fixed support 1, respectively. Medical staff can manually turn the opposite transmission screw 201. As the opposite transmission screw 201 rotates, the offset slider 1 202 and offset slider 203 connected by threads on both sides move outward. As the two movable locking blocks 209 approach the fixed locking blocks 8 at their corresponding positions, the dialysis blood collection tube 3 and the dialysis return tube 4 are synchronously limited, preventing the dialysis blood collection tube 3 and the dialysis return tube 4 from accidentally shifting or falling off during treatment, greatly simplifying the operation process and improving work efficiency.

[0038] In this embodiment, the synchronous fixing mechanism 2 further includes a fixing torsion ring 205 and a connecting column 206. The fixing torsion ring 205 is located on the outside of the upright plate 11, and the connecting column 206 is fixedly connected to the outside of the fixing torsion ring 205. One end of the opposite-direction transmission screw 201 is connected to the fixing torsion ring 205.

[0039] In actual operation, the rotation of the opposite-direction transmission screw 201 can be adjusted by rotating the connecting column 206.

[0040] In this embodiment, buffer pads are provided in the semi-circular grooves of the movable block 209 and the fixed block 8 to buffer the pipe and avoid hard compression of the pipe.

[0041] In this embodiment, a bushing 12 is provided on the opposite side of the fixed plate 208 and the upright plate 11, and a guide shaft 13 is provided on the inner side of the upright plate 11. The bushing 12 is sleeved on the guide shaft 13. When the fixed plate moves toward the upright plate 11, the cooperation between the bushing and the guide shaft ensures that the movable locking block 209 will not tilt during the movement.

[0042] The hemodialysis catheter fixing device provided in this embodiment also includes a locking and limiting mechanism 5, which adopts a commonly used ratchet and pawl limiting structure; the locking and limiting mechanism 5 is set on the upright plate 11 and is used to lock and limit the rotation position of the synchronous fixing mechanism 2.

[0043] Specifically, the locking and limiting mechanism 5 includes a rotating column 501, a torsion spring 502, and a pawl 503;

[0044] The rotating column 501 is rotatably connected to the outside of the upright plate 11. For example, a mounting hole can be provided on the upright plate 11, and the end of the rotating shaft 501 is assembled with the mounting hole through a bearing.

[0045] A pawl 503 is fixedly connected to the outside of the rotating column 501. A torsion spring 502 is sleeved between the rotating column 501 and the upright plate 11. One end of the torsion spring 502 contacts the outside of the pawl 503, and the other end extends into a pre-set groove on the upright plate 11. With this structure, when an external force is applied to make the rotating column 501 rotate in the first direction, the pawl 503 will rotate synchronously. The pawl 503 will generate a pushing force on one end of the torsion spring 502. When the external force is removed, the return spring force at the end of the torsion spring 502 will drive the pawl 503 to return to its original position.

[0046] In addition, multiple ratchet teeth 207 are arranged around the outer surface of the fixed torsion ring 205. The rotational position of the fixed torsion ring 205 is restricted by the ratchet teeth 207 in the form of the pawl 503 cooperating with the pawl 203.

[0047] In this embodiment, three mounting plates 6 are fixedly connected to the upright plate 11 of the fixed bracket 1. Each mounting plate 6 has a mounting hole 7 inside. The mounting plate 6 is used to install with the edge of the bed where the patient lies flat during dialysis. When installing with the edge of the bed, screws are screwed into the mounting holes 7 of the mounting plate 6 on the side of the bed to realize the installation of the hemodialysis catheter fixing device with the edge of the bed.

[0048] The working principle of the hemodialysis catheter fixation device provided in this embodiment is explained below:

[0049] Before medical staff fix the dialysis blood collection tube 3 and the dialysis return tube 4, they need to pry the pawl 503 to disengage it from the ratchet 207 on the outside of the fixing torsion ring 205. This will release the restriction on the fixing torsion ring 205. Then, the rotating connecting column 206 is turned to adjust the rotation of the opposite-direction transmission screw 201. When the movable locking block 209 approaches the fixing locking block 8, the two semi-circular grooves are used to simultaneously clamp the dialysis blood collection tube 3 and the dialysis return tube 4. Then, the pawl 503 is released. Under the action of the torsion spring 502, the pawl 503 resets and engages with the ratchet 207 to prevent the fixing torsion ring 205 from rotating accidentally, thereby avoiding the separation of the movable locking block 209 from the fixing locking block 8, which would cause the dialysis blood collection tube 3 and the dialysis return tube 4 to detach.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A hemodialysis catheter fixing device, comprising a fixing bracket (1), wherein upright plates are respectively provided on both sides of the fixing bracket (1) along its length, characterized in that: It also includes a synchronous fixing mechanism (2) for simultaneously fixing the dialysis blood collection tube (3) and the dialysis return tube (4); The synchronous fixing mechanism (2) includes a counter-rotating transmission screw (201), offset slider one (202), offset slider two (203), bracket slide rail (204), movable locking block (209) and fixed locking block (8); The two ends of the opposite-direction drive screw (201) are rotatably connected to the upright plates on both sides of the fixed bracket (1). The two sides of the opposite-direction drive screw (201) are provided with threaded structures with opposite directions of rotation. The two sides of the opposite-direction drive screw (201) are respectively threadedly connected to offset slider one (202) and offset slider two (203). The lower ends of offset slider one (202) and offset slider two (203) are slidably connected to the bracket slide rail (204) provided on the upper surface of the fixed bracket (1). The upper surfaces of the offset slider one (202) and the offset slider two (203) are both fixedly connected to a fixing plate (208), and the inner sides of the two fixing plates (208) are both fixedly connected to a movable locking block (209). The fixed blocks (8) are fixed to the inner sides of the two upright plates respectively, and semi-circular grooves are provided on the opposite sides of the movable blocks (209) and the fixed blocks (8).

2. The hemodialysis catheter fixation device according to claim 1, characterized in that: The synchronous fixing mechanism (2) further includes a fixed torsion ring (205) and a connecting column (206). The fixed torsion ring (205) is located on the outside of the upright plate. The connecting column (206) is fixedly connected to the outside of the fixed torsion ring (205). One end of the opposite transmission screw (201) is connected to the fixed torsion ring (205).

3. The hemodialysis catheter fixation device according to claim 1, characterized in that: The two ends of the opposite-direction transmission screw (201) are smooth rods, which are connected to the through holes provided on the corresponding upright plates through bearings.

4. The hemodialysis catheter fixation device according to claim 2, characterized in that: Buffer pads are provided in the semi-circular grooves of the movable card block (209) and the fixed card block (8).

5. A hemodialysis catheter fixation device according to claim 2, characterized in that: A bushing (12) is provided on the opposite side of the fixed plate (208) and the upright plate, and a guide shaft (13) is provided on the inner side of the upright plate. The bushing (12) is sleeved on the guide shaft (13).

6. The hemodialysis catheter fixation device according to claim 5, characterized in that: It also includes a locking and limiting mechanism (5), which adopts a ratchet and pawl limiting structure; the locking and limiting mechanism (5) is set on the upright plate and is used to lock and limit the synchronous fixing mechanism (2).

7. A hemodialysis catheter fixation device according to claim 6, characterized in that: The locking and limiting mechanism (5) includes a rotating column (501), a torsion spring (502), and a pawl (503); The rotating column (501) is rotatably connected to the outside of the upright plate. A pawl (503) is fixedly connected to the outside of the rotating column (501). The torsion spring (502) is sleeved between the rotating column (501) and the upright plate. One end of the torsion spring (502) contacts the outside of the pawl (503), and the other end extends into a pre-set groove on the upright plate. A plurality of ratchet teeth (207) are arranged around the outer surface of the fixed torsion ring (205).

8. A hemodialysis catheter fixation device according to claim 1, characterized in that: Multiple mounting plates (6) are fixedly connected to the upright plate, and each mounting plate (6) has mounting holes (7) inside.

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