CN204618334U - Internal fistula compression hemostasis device - Google Patents

Abstract

The utility model discloses a kind of internal fistula compression hemostasis device, comprise Elastic bandage, the middle part of described Elastic bandage is provided with pedestal, described pedestal is provided with Xie Qie mechanism and drives the drive mechanism of this Xie Qie mechanism, described Xie Qie mechanism comprises the slide block that can slide up and down along pedestal and can move to drive tiltedly carving of the downward pressure point of this slide block along base level, described drive mechanism comprises the screw rod that can promote tiltedly to carve and the nut body coordinated with screw rod, described nut body is axially limited on pedestal, the oppressive force to point of puncture can be discharged gradually in the later stage of hemostasis by compression.

Description

Internal fistula compression hemostatic device

technical field

The utility model relates to an internal fistula compression hemostasis device.

Background technique

Hemodialysis is the main alternative treatment for patients with end-stage renal failure. Arteriovenous fistula is the safest and most convenient access for dialysis. Through this access, the arterial blood is shunted to the vein. Due to the increased blood flow and pressure, the lumen of the vein expands and the wall thickens to form an arterialized vessel. However, arteriovenous fistulas have high blood pressure and are prone to bleeding after puncture, so it is necessary to compress the puncture point to stop bleeding. At present, elastic bandage is commonly used to stop bleeding in internal fistula, and the puncture point is generally located on the forearm. The elastic bandage is wrapped around the forearm, and the two ends are glued together by gluing to form compression on the puncture point. The advantage is that it is easy to operate. Good pressure retention. But the disadvantage is that during the hemostasis process, the pressure of the elastic bandage on the puncture point is basically constant, and the pressure required in the later stage of the clinical hemostasis process is gradually reduced, and the compression time should not be too long (generally 30min), but In fact, some elderly patients or newly introduced hemodialysis patients will forget to take elastic bandages. Occlusion of the internal fistula is often caused, and there are at least two consequences: 1. The patient suffers from thrombolytic pain. 2. If the thrombolysis is unsuccessful, reconstruction of the internal fistula is required, but before the internal fistula matures, a temporary deep vein catheter is required as a hemodialysis access, which greatly increases the pain and financial burden of the patient. And existing elastic bandage can't meet this requirement.

Utility model content

In view of this, the technical problem to be solved by the utility model is to provide a fistula compression hemostatic device, which can gradually release the compression force on the puncture point.

The internal fistula compression hemostasis device of the present utility model comprises an elastic bandage, a base is provided in the middle of the elastic bandage, and a wedge mechanism and a transmission mechanism for driving the wedge mechanism are arranged on the base, and the wedge mechanism It includes a slider that can slide up and down along the base and a wedge that can move horizontally along the base to drive the slider to press the hemostasis point downward. The transmission mechanism includes a screw that can push the wedge and a nut that cooperates with the screw. The nut body is axially limited on the base.

Further, the nut body has external teeth around its circumference, and the transmission mechanism also includes a gear on the base that meshes with the outer body of the nut body and a micro motor that drives the gear.

Further, the screw rod is connected to the push plate, and a spring is connected between the push plate and the wedge.

Beneficial effects of the present utility model: the internal fistula compression hemostasis device of the present utility model comprises an elastic bandage, a base is provided in the middle of the elastic bandage, and an inclined wedge mechanism and a transmission for driving the inclined wedge mechanism are arranged on the base. mechanism, the wedge mechanism includes a slider that can slide up and down along the base and a wedge that can move horizontally along the base to drive the slider to press the hemostasis point downward, and the transmission mechanism includes a screw that can push the wedge and The nut body matched with the screw rod is axially limited on the base, and the compression force on the puncture point can be gradually released in the late stage of compression hemostasis.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Fig. 1 is the front schematic diagram of the utility model;

Fig. 2 is the left view schematic diagram of the utility model;

Fig. 3 is an enlarged view of part A in Fig. 1;

Fig. 4 is an enlarged view of part B in Fig. 1 .

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings, as shown in the figure: the internal fistula compression hemostasis device of the present embodiment includes an elastic bandage 1, and the two ends of the elastic bandage 1 are wrapped around by gluing to be wrapped inside around the fistula puncture site. The middle part of the elastic bandage 1 is provided with a base 2, and the base 2 is provided with a wedge mechanism 3 and a transmission mechanism 4 for driving the wedge mechanism. The wedge mechanism 3 includes a slide that can slide up and down along the base The block 301 and the oblique wedge 302 that can move horizontally along the base to drive the slider 301 to press the hemostatic point downward, the transmission mechanism 4 includes a screw rod 401 that can push the oblique wedge and a nut body 402 that cooperates with the screw rod, and the nut body 402 The axial direction is limited by the left and right limiting plates 201 and 202 on the base 2 . The base 2 is positioned at the puncture point of the internal fistula through the elastic bandage 1, and the tightness of the elastic bandage 1 is adjusted so that it only acts as a fixation and does not compress the puncture point of the internal fistula. The compression of the internal fistula is completed by the slider 301, specifically The operation steps are: rotate the nut body 402. Since the axial direction of the nut body 402 is restricted, the rotation of the nut body 402 will be transformed into the horizontal movement of the screw rod 401. When the screw rod 401 drives the wedge 302 to move relative to the slider 301, the slider 301 will be moved The extrusion of the oblique wedge 302 presses down the puncture point of the internal fistula. In the later stage of compression, the nut body 402 can be rotated in the opposite direction so that the screw 401 drives the oblique wedge 302 to gradually release the downward pressure on the slider 301, which can satisfy the hemostasis in the late stage. Gradually reduce pressure on the puncture point.

As a further improvement of the above technical solution, the nut body 402 has an outer tooth body 403 in the circumferential direction, and the transmission mechanism 4 also includes a gear 404 on the base that is engaged with the outer body of the nut body and drives the gear The micro-motor 405 drives the gear 404 and the nut body 402 to rotate sequentially through the micro-motor 405. Manual operation is not required, and the operation is simple. The speed and direction of the micro-motor 405 are adjustable, and the control is more precise.

As a further improvement of the above-mentioned technical solution, the screw rod 401 is connected to the push plate 406, and a spring 407 is connected between the push plate 406 and the wedge, and the pressure of the spring 407 can appropriately increase the pressure of the wedge 402 on the slider 401. It is the pressing force of the slider 401 on the puncture point.

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the utility model can be Modifications or equivalent replacements of the technical solutions without departing from the purpose and scope of the technical solutions of the utility model shall be covered by the claims of the utility model.

Claims (3)

1. an internal fistula compression hemostasis device, comprise Elastic bandage (1), it is characterized in that: the middle part of described Elastic bandage is provided with pedestal (2), described pedestal (2) is provided with Xie Qie mechanism (3) and drives the drive mechanism (4) of this Xie Qie mechanism, described Xie Qie mechanism (3) comprises the slide block (301) that can slide up and down along pedestal and can move to drive this slide block (301) tiltedly the carving (302) of pressure point downwards along base level, described drive mechanism (4) comprises the screw rod (401) that can promote tiltedly to carve and the nut body (402) coordinated with screw rod, described nut body (402) is axially limited on pedestal (2).

2. internal fistula compression hemostasis device according to claim 1, it is characterized in that: the circumference of described nut body (402) has outer denticle (403), described drive mechanism (4) also comprises and is positioned at the gear (404) be meshed with the outer nakedness of nut body on pedestal and the micromachine (405) driving this gear.

3. internal fistula compression hemostasis device according to claim 2, is characterized in that: described screw rod (401) is connected in push pedal (406), described push pedal (406) and be connected with spring (407) between tiltedly carving.