Hemostasis compressor capable of controlling pressure and timing for puncture point of internal arteriovenous fistula

Abstract

The utility model discloses an internal arteriovenous fistula puncture point controllable pressure and timing hemostasis compressor in the technical field of internal arteriovenous fistula puncture, which comprises a pressing mechanism, the pressing mechanism comprises a binding belt and a shell, the shell is fixedly arranged on the binding belt, the inner side of the shell is provided with a movable groove, a pressing piece is arranged in the movable groove, and the pressing piece is fixed on the binding belt. Two adsorption cylinders are symmetrically arranged at the bottom of the shell, and piston pieces are movably arranged in the adsorption cylinders; when the device is used and the pressing piece moves upwards, the one-way rotating shafts are driven to rotate through the toothed plate, so that one one-way rotating shaft is made to wind disposable gauze, the other one-way rotating shaft is made to release the disposable gauze, automatic replacement of the disposable gauze is achieved, and then the possibility of cross infection of a patient is reduced; when the pressing piece drives the steel rope to move, the piston piece is pulled to move through the steel rope, the shell is adsorbed and fixed to the arm of a patient through the adsorption barrel, and therefore the possibility that the position of the shell deviates is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of arteriovenous fistula puncture, in particular to a hemostatic compressor with controllable pressure and timing at the arteriovenous fistula puncture point. Background Art

[0002] The puncture method for arteriovenous fistula is to suture the artery near the wrist of the forearm with the adjacent vein, so that the blood in the anastomotic vein flows to the artery after the anastomosis, forming an arteriovenous fistula. The fistula puncture point is generally at least 5 cm away from the anastomosis to avoid damaging the anastomosis. The venous needle tip points to the proximal end, and the arterial needle points to the direction of the anastomosis, that is, the direction of the heart. The two puncture points are at least 5 cm apart, and preferably 8 cm. Care should be taken to avoid puncturing the same blood vessel as the artery to reduce the risk of recirculation of the arteriovenous fistula. Improper pressure or improper time control after puncture will cause greater damage to the local blood vessels and increase the risk of bleeding at the puncture site. This will increase the workload of nurses and other consequences.

[0003] An existing patent (publication number: CN221308287U) discloses a pressure-controlled and timed hemostatic compression device for arteriovenous fistula puncture sites. The device comprises an arcuate bandage with a mating fixing structure on the outer surface and the inner surface of the other end. An inflatable airbag is fixed to the inner surface of the middle portion of the bandage. The airbag is connected to one end of an inflation tube, the other end of which is connected to an air pump. However, this technical solution still has shortcomings, as follows:

[0004] During use, this device inflates the puncture site by inflating the balloon to apply hemostatic pressure. This requires placing a disposable gauze over the balloon to stop bleeding. After the device is used, the operator needs to remove and replace the disposable gauze. This manual replacement of the disposable gauze each time the device is used is cumbersome. To address this issue, we propose a hemostatic pressure device with controllable pressure and timing for arteriovenous fistula puncture sites. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present invention is to provide a hemostatic compressor with controllable pressure and timing for the puncture point of an arteriovenous fistula, which can solve the problem that the existing device performs hemostatic compression on the puncture point by expanding an inflatable air bag during use, and at this time, a disposable gauze needs to be placed on the inflatable air bag for hemostasis. When the device is finished using, the operator needs to remove and replace the disposable gauze. The operator needs to manually replace the disposable gauze every time the device is used, so the device is more troublesome to use.

[0007] To solve the above technical problems, the present invention provides a hemostatic compressor with controllable pressure and timing for arteriovenous fistula puncture points, which adopts the following technical solution: comprising a pressing mechanism, which includes a restraining belt and a shell, the shell being fixedly arranged on the restraining belt, a movable groove being formed on the inner side of the shell, a pressing member being arranged in the movable groove, two adsorption cylinders being symmetrically arranged at the bottom of the shell, a piston being movably arranged in the adsorption cylinder, and the piston being connected to the pressing member via a steel cable;

[0008] The unwinding mechanism includes two storage cylinders, which are symmetrically arranged on the pressing piece. A one-way rotating shaft is rotatably arranged in the two storage cylinders. A tooth plate corresponding to the one-way rotating shaft is fixedly arranged in the movable groove. Both ends of the one-way rotating shaft extend out of the storage cylinder and engage with the tooth plate. The two one-way rotating shafts are connected by a disposable gauze, and the disposable gauze is in contact with the bottom of the pressing piece.

[0009] By adopting the above technical solution, this solution first fixes the shell on the patient's arm through a restraint belt, and makes the shell coincide with the puncture point, and then presses the puncture point through the operation of the pressing part. As the pressing part moves, the steel cable moves synchronously. At this time, the piston part is pulled to move by the steel cable, and the shell is adsorbed and fixed on the patient's arm through the adsorption cylinder, thereby reducing the possibility of the shell position shifting.

[0010] Optionally, the two ends of the restraint belt are connected by arranging Velcro.

[0011] By adopting the above technical solution, the present solution facilitates fixing the two ends of the restraint belt together by using Velcro.

[0012] Optionally, the pressing member includes an electric push rod and a pressing plate, the electric push rod is fixedly arranged on the inner top wall of the movable groove, and the pressing plate is fixedly arranged on the protruding end of the electric push rod.

[0013] By adopting the above technical solution, the present invention facilitates the movement of the pressing plate through the electric push rod, and when the pressing plate moves downward, the disposable gauze is pushed to fit the puncture point to stop bleeding.

[0014] Optionally, a pressure detector for detecting pressure is provided on the bottom surface of the pressing plate, and a timer for controlling the start and stop of the electric push rod is provided in the electric push rod.

[0015] By adopting the above technical solution, this solution facilitates the detection of the pressure between the pressing plate and the patient's arm through a pressure detector. When the detected pressure value reaches a specified value, the pressure detector controls the electric push rod to stop running, and the time for pressing the pressing plate is controlled by a timer.

[0016] Optionally, the piston is connected to the inner top wall of the adsorption cylinder by providing a spring.

[0017] By adopting the above technical solution, this solution facilitates the movement of the piston downward through the spring. At this time, the adsorption cylinder loses its suction force. When the electric push rod pushes the pressing plate downward, the piston is pulled upward by the steel cable, thereby fixing the outer shell on the patient's arm through the adsorption cylinder.

[0018] Optionally, one end of the steel cable is fixedly connected to the top surface of the piston member, and the other end of the steel cable passes through the outer shell and is inserted into the movable groove and fixedly connected to the top surface of the pressing plate.

[0019] By adopting the above technical solution, when the electric push rod pushes the pressing plate downward, the piston is pulled upward by the steel cable, thereby fixing the shell on the patient's arm through the adsorption cylinder.

[0020] Optionally, an outer wall of the storage tube is provided with an opening for passing disposable gauze.

[0021] By adopting the above technical solution, the present solution enables the disposable gauze to enter the storage cylinder through the opening and be wound around the one-way rotating shaft.

[0022] Optionally, one-way bearings are fixedly sleeved on the outer walls of both ends of the one-way rotating shaft, and gears are fixedly sleeved on the two one-way bearings, and the gears are meshed with the gear plate.

[0023] By adopting the above technical solution, when the one-way rotating shaft moves upward, the gear and the outer ring of the one-way bearing are driven to rotate through the tooth plate. At this time, the inner ring of the one-way bearing and the one-way rotating shaft rotate synchronously with the outer ring, so that the disposable gauze is rolled up by the one-way rotating shaft, thereby realizing the replacement of the disposable gauze.

[0024] In summary, the present invention has at least one of the following beneficial effects:

[0025] When the pressing member moves upward, the tooth plate drives the one-way rotating shaft to rotate, thereby prompting one one-way rotating shaft to reel in the disposable gauze and the other one-way rotating shaft to release the disposable gauze, thereby realizing automatic replacement of the disposable gauze and reducing the possibility of cross infection among patients;

[0026] When the pressing part drives the steel cable to move, the piston part is pulled to move by the steel cable, and the outer shell is adsorbed and fixed on the patient's arm through the adsorption cylinder, thereby reducing the possibility of the outer shell position being offset. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0029] Figure 2 It is a partial three-dimensional structural cross-sectional view of the utility model;

[0030] Figure 3 It is a partial three-dimensional expanded structural cross-sectional view of the utility model.

[0031] Explanation of reference numerals: 100, pressing mechanism; 101, restraint belt; 101a, Velcro; 102, housing; 103, movable groove; 104, pressing member; 104a, electric push rod; 104b, pressing plate; 105, adsorption cylinder; 106, piston; 106a, spring; 107, steel cable;

[0032] 200, unwinding mechanism; 201, storage cylinder; 201a, opening; 202, one-way rotating shaft; 202a, one-way bearing; 202b, gear; 203, tooth plate; 204, disposable gauze. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-3 The utility model is described in further detail.

[0034] Example 1, refer to Figure 1-3 In this embodiment, in order to solve the problem that the existing device uses an inflatable airbag to expand and compress the puncture point to stop bleeding, it is necessary to place a disposable gauze on the inflatable airbag to stop bleeding. After the device is used, the operator needs to remove and replace the disposable gauze. The operator needs to manually replace the disposable gauze each time the device is used, which makes the device more troublesome to use. The utility model discloses a hemostatic compressor with controllable pressure and timing for the puncture point of the arteriovenous fistula.

[0035] It includes a pressing mechanism 100, which includes a restraint belt 101 and a shell 102. The shell 102 is fixedly set on the restraint belt 101. A movable groove 103 is opened on the inner side of the shell 102. A pressing member 104 is set in the movable groove 103. The pressing member 104 includes an electric push rod 104a and a pressing plate 104b. The electric push rod 104a is fixedly set on the inner top wall of the movable groove 103, and the pressing plate 104b is fixedly set at the protruding end of the electric push rod 104a. The electric push rod 104a facilitates the movement of the pressing plate 104b. When the pressing plate 104b moves down, it fits the puncture point to stop bleeding.

[0036] Two adsorption cylinders 105 are symmetrically arranged at the bottom of the outer shell 102. A piston 106 is movably arranged inside the adsorption cylinder 105. The piston 106 is connected to the pressing piece 104 by a steel cable 107. As the pressing piece 104 moves, the steel cable 107 is driven to move synchronously. At this time, the piston 106 is pulled to move by the steel cable 107, and the outer shell 102 is adsorbed and fixed on the patient's arm through the adsorption cylinder 105.

[0037] The unwinding mechanism 200 includes two storage tubes 201, which are symmetrically arranged on the pressing piece 104. A one-way rotating shaft 202 is rotatably arranged in the two storage tubes 201. When the pressing piece 104 moves downward, the one-way rotating shaft 202 remains stationary and moves with the pressing piece 104 to fit the puncture point to stop bleeding.

[0038] A tooth plate 203 corresponding to the one-way rotating shaft 202 is fixedly set in the movable groove 103. Both ends of the one-way rotating shaft 202 extend out of the storage tube 201 and engage with the tooth plate 203. When the pressing member 104 moves upward, the one-way rotating shaft 202 is driven to rotate through the tooth plate 203.

[0039] The two one-way rotating shafts 202 are connected by a disposable gauze 204. The outer walls of both ends of the one-way rotating shaft 202 are fixedly sleeved with one-way bearings 202a. The two one-way bearings 202a are fixedly sleeved with gears 202b, which are engaged with the gear plate 203.

[0040] When the electric push rod 104a pushes the pressing plate 104b to move, the storage tube 201 and the one-way shaft 202 move synchronously. When the one-way shaft 202 moves downward, the gear 202b and the outer ring of the one-way bearing 202a rotate through the gear plate 203. At this time, the inner ring of the one-way bearing 202a and the one-way shaft 202 remain stationary.

[0041] When the one-way rotating shaft 202 moves upward, the gear 202b and the outer ring of the one-way bearing 202a are driven to rotate through the tooth plate 203. At this time, the inner ring of the one-way bearing 202a and the one-way rotating shaft 202 rotate synchronously with the outer ring, so that the disposable gauze 204 is rolled up by the one-way rotating shaft 202, thereby realizing the replacement of the disposable gauze 204.

[0042] The disposable gauze 204 fits the bottom of the pressing member 104 , and the outer wall of the storage tube 201 is provided with an opening 201 a for the disposable gauze 204 to pass through. The disposable gauze 204 can enter the storage tube 201 through the opening 201 a and be wound around the one-way rotating shaft 202 .

[0043] The specific working principle is: when the pressing member 104 moves downward, the one-way rotating shaft 202 remains stationary, and as the pressing member 104 moves, the disposable gauze 204 is pressed against the puncture point to stop bleeding;

[0044] When the pressing member 104 moves upward, the tooth plate 203 drives the one-way rotating shaft 202 to rotate, thereby prompting one one-way rotating shaft 202 to reel in the disposable gauze 204, and the other one-way rotating shaft 202 to release the disposable gauze 204, thereby realizing automatic replacement of the disposable gauze 204, thereby reducing the possibility of cross infection among patients.

[0045] Example 2, refer to Figure 1-3 In this embodiment, in order to solve the problem that some existing devices are only fixed by elastic bands, so the position of the device is easily shifted, based on the same concept as the above-mentioned embodiment 1, the arteriovenous fistula puncture point controllable pressure and timing hemostatic compression device further includes:

[0046] The two ends of the restraint belt 101 are connected by a Velcro 101 a , which facilitates fixing the two ends of the restraint belt 101 together and fixing the shell 102 on the patient's arm through the restraint belt 101 .

[0047] The piston 106 is connected to the inner top wall of the adsorption cylinder 105 by setting a spring 106a. The spring 106a facilitates the pushing of the piston 106 downward. At this time, the adsorption cylinder 105 loses its suction force. When the electric push rod 104a pushes the pressing plate 104b downward, the piston 106 is pulled upward by the steel cable 107, thereby fixing the outer shell 102 on the patient's arm through the adsorption cylinder 105.

[0048] One end of the steel cable 107 is fixedly connected to the top surface of the piston 106, and the other end of the steel cable 107 passes through the shell 102 and is inserted into the movable groove 103 and fixedly connected to the top surface of the pressing plate 104b. When the electric push rod 104a pushes the pressing plate 104b to move downward, the piston 106 is pulled upward by the steel cable 107, thereby fixing the shell 102 on the patient's arm through the adsorption cylinder 105. When the electric push rod 104a pulls the pressing plate 104b to move upward, the steel cable 107 and the piston 106 lose tension. At this time, the spring 106a facilitates the downward push of the piston 106, thereby causing the adsorption cylinder 105 to lose suction.

[0049] The specific working principle is: first, the shell 102 is fixed to the patient's arm through the restraint belt 101, and the shell 102 is caused to coincide with the puncture point, and then the puncture point is pressed by the operation of the pressing member 104. As the pressing member 104 moves, the steel cable 107 is driven to move synchronously. At this time, the piston 106 is pulled to move by the steel cable 107, and the shell 102 is adsorbed and fixed to the patient's arm through the adsorption cylinder 105, thereby reducing the possibility of the position of the shell 102 being offset.

[0050] Example 3, refer to Figure 2-3 Based on the same concept as the first embodiment above, the arteriovenous fistula puncture point pressure-controllable and timed hemostatic compression device further includes:

[0051] A pressure detector for detecting pressure is provided on the bottom surface of the pressing plate 104b, and a timer for controlling the start and stop of the electric push rod 104a is provided in the electric push rod 104a. The pressure detector is used to detect the pressure between the pressing plate 104b and the patient's arm. When the detected pressure value reaches a specified value, the pressure detector controls the electric push rod 104a to stop running, and the time for pressing the pressing plate 104b is controlled by the timer. When the time is reached, the timer controls the electric push rod 104a to pull the pressing plate 104b up and reset. The pressure detector and the timer are both existing technologies, and cooperate with the controller to control the electric push rod 104a.

[0052] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hemostatic compression device with controllable pressure and timing for arteriovenous fistula puncture points, characterized by: include, A pressing mechanism (100) comprises a restraining belt (101) and a shell (102), wherein the shell (102) is fixedly arranged on the restraining belt (101), a movable groove (103) is provided on the inner side of the shell (102), a pressing member (104) is provided in the movable groove (103), two adsorption cylinders (105) are symmetrically provided at the bottom of the shell (102), a piston member (106) is movably provided in the adsorption cylinder (105), and the piston member (106) is connected to the pressing member (104) by means of a steel cable (107); The unwinding mechanism (200) comprises two storage cylinders (201), wherein the two storage cylinders (201) are symmetrically arranged on a pressing member (104), a one-way rotating shaft (202) is rotatably arranged in each of the two storage cylinders (201), a tooth plate (203) corresponding to the one-way rotating shaft (202) is fixedly arranged in the movable groove (103), both ends of the one-way rotating shaft (202) extend out of the storage cylinder (201) and engage with the tooth plate (203), and the two one-way rotating shafts (202) are connected by arranging a disposable gauze (204), and the disposable gauze (204) is in contact with the bottom of the pressing member (104).

2. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compression device according to claim 1, characterized in that: The two ends of the restraint belt (101) are connected by providing a Velcro (101a).

3. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compressor according to claim 1, characterized in that: The pressing member (104) comprises an electric push rod (104a) and a pressing plate (104b), wherein the electric push rod (104a) is fixedly arranged on the inner top wall of the movable groove (103), and the pressing plate (104b) is fixedly arranged on the protruding end of the electric push rod (104a).

4. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compressor according to claim 3, characterized in that: A pressure detector for detecting pressure is provided on the bottom surface of the pressing plate (104b), and a timer for controlling the start and stop of the electric push rod (104a) is provided inside the electric push rod (104a).

5. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compressor according to claim 1, characterized in that: The piston member (106) is connected to the inner top wall of the adsorption cylinder (105) by providing a spring (106a).

6. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compressor according to claim 3, characterized in that: One end of the steel cable (107) is fixedly connected to the top surface of the piston member (106), and the other end of the steel cable (107) passes through the housing (102), is inserted into the movable groove (103), and is fixedly connected to the top surface of the pressing plate (104b).

7. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compressor according to claim 1, characterized in that: The outer wall of the storage cylinder (201) is provided with an opening (201a) for the disposable gauze (204) to pass through.

8. The arteriovenous fistula puncture point pressure-controllable and timed hemostatic compressor according to claim 1, characterized in that: One-way bearings (202a) are fixedly sleeved on the outer walls of both ends of the one-way rotating shaft (202), and gears (202b) are fixedly sleeved on the two one-way bearings (202a), and the gears (202b) are meshed with the gear plate (203).

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