Auxiliary guiding device for peritoneal dialysis

Abstract

The utility model aims to provide an auxiliary guiding device for peritoneal dialysis, which relates to the technical field related to medical instruments and is characterized in that a straight tube part and a movable head are connected through a bending part, an electro-deformation rod is arranged in the bending part, and the electro-deformation rod is deformed and bent by conveying current and voltage, so that multi-angle rotation and locking of the movable head are realized; trauma can be reduced, and meanwhile pain of a patient is relieved; a limiting mechanism is arranged on a handle and comprises a T-shaped rod, a gear and a rack, the gear is located between the T-shaped rod and the rack, an elastic element is arranged on the lower portion of the T-shaped rod, a tooth-shaped protrusion is arranged on the T-shaped rod and matched with the gear, and a limiting block is fixedly connected to the lower portion of the rack and makes contact with a peritoneal dialysis catheter to limit movement of the peritoneal dialysis catheter. The miniature camera and the lighting device are arranged on the movable head, and the display screen is arranged on the control panel on the outer cylinder, so that the peritoneal dialysis catheter can be guided to the part, namely the colorectal fossa, required by peritoneal dialysis catheter indwelling.

Description

Technical Field

[0001] The utility model relates to the technical field related to medical devices, and in particular to an auxiliary guiding device for peritoneal dialysis. Background Art

[0002] Peritoneal dialysis is a method for treating renal failure. It uses the peritoneum as a dialysis membrane to separate the dialysate infused into the peritoneal cavity from the blood. The peritoneum has the properties of a semi-permeable membrane, and has the characteristics of a large area and rich capillaries. The blood in the peritoneal capillary cavity immersed in the dialysate undergoes extensive material exchange with the dialysate to remove metabolites and toxins from the body. The peritoneal dialysis catheter is a key component for introducing and discharging the dialysate into the patient's peritoneal cavity. During peritoneal dialysis, the position and direction of the catheter are crucial to the treatment effect. Peritoneal dialysis is an effective renal replacement therapy for end-stage renal disease, and the peritoneal dialysis catheter is the "lifeline" of peritoneal dialysis patients. When performing peritoneal dialysis, medical staff often need to use biopsy forceps or similar tools to adjust the direction of the catheter. The operation is complicated, and the angle of the biopsy forceps head cannot be adjusted, making it difficult for the peritoneal dialysis catheter to reach the peritoneal dialysis position.

[0003] The invention patent with publication number CN109528249A discloses a biopsy forceps for bronchoscope, including an adjuster, an angle adjustment block, a jaw pull block, an insertion hose, a movable head, and a clamp head. One end of the insertion hose is connected to the adjuster, and the other end of the insertion hose is connected to the movable head. The clamp head is arranged at the end of the movable head. A first drawing wire and a second drawing wire are arranged in the insertion hose. A jaw pull block is arranged on the adjuster, and the jaw pull block is connected to the clamp head through a second drawing wire. A plurality of angle adjustment blocks are arranged on the adjuster, and the angle adjustment block is connected to the first drawing wire and the movable head.

[0004] The prior art can adjust the direction of the movable head by controlling the angle adjustment block. When inserting the flexible tube, the direction of the movable head can be controlled, making the insertion smoother, saving time and reducing the pain of the patient. However, the following technical problems still exist:

[0005] 1. The biopsy forceps of the prior art (CN109528249A) adjust the movable head by controlling the adjustment block through drawing. It is laborious to pull the drawing wire for adjustment and it is not easy to adjust. In addition, there is no locking mechanism and the angle of the biopsy forceps cannot be locked.

[0006] 2. The biopsy forceps in the prior art (CN109528249A) lack a fixing mechanism for the catheter, and the catheter is easily moved up and down when inserted into the biopsy forceps, which affects the operation of the biopsy forceps. Utility Model Content

[0007] In view of the deficiencies of the prior art, the present invention provides the following technical solutions:

[0008] An auxiliary guide device for peritoneal dialysis comprises an outer tube, a handle and a peritoneal dialysis tube, wherein the outer tube is provided with a handle, the outer tube comprises a straight tube portion, a curved portion and a movable head, the straight tube portion is connected to the movable head via the curved portion, an electrodeformable rod is provided in the curved portion, and the electrodeformable rod is controlled to deform and bend by powering on to adjust the angle of the movable head;

[0009] The handle is provided with a limiting mechanism, the handle comprises a connecting rod and a grip ring, the handle is fixedly connected to the straight tube portion of the outer tube through the connecting rod, a limiting hole is provided at the connection between the connecting rod and the straight tube, and the limiting mechanism is located in the connecting rod of the handle;

[0010] The limiting mechanism includes a T-shaped rod, a gear and a rack. The gear is located between the T-shaped rod and the rack. An elastic element is provided under the T-shaped rod. A toothed protrusion is provided on the T-shaped rod to cooperate with the gear. The rack meshes with the gear. A limiting block is fixedly connected under the rack, and the limiting block slides in the limiting hole.

[0011] Furthermore, the electrodeformable rod is made of an electrodeformable material, and the deformation and bending of the electrodeformable rod is controlled by different currents and voltages.

[0012] Furthermore, the movable head is provided with a lighting device and a micro camera.

[0013] Furthermore, a control panel is provided on the straight tube portion of the outer tube, a power source is provided inside the control panel, and control buttons and a display screen are provided on the control panel.

[0014] Furthermore, a conductive wire is arranged inside the outer cylinder wall.

[0015] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0016] 1. The utility model connects the straight tube part and the movable head through the bending part, and arranges an electrodeformable rod in the bending part. By transmitting current and voltage, the electrodeformable rod is deformed and bent, so that the movable head can be rotated and locked at multiple angles, thereby adjusting the angle of the peritoneal dialysis tube, reducing trauma and reducing the pain of the patient;

[0017] 2. The utility model provides a limit mechanism on the handle, the limit mechanism includes a T-shaped rod, a gear and a rack, the gear is located between the T-shaped rod and the rack, an elastic element is provided below the T-shaped rod, a toothed protrusion is provided on the T-shaped rod to cooperate with the gear, a limit block is fixedly connected below the rack to contact the peritoneal dialysis tube to limit the movement of the peritoneal dialysis tube, and the T-shaped rod is pressed to control the limit block below the rack to move upward through the gear transmission to separate from the peritoneal dialysis tube;

[0018] 3. The utility model provides a micro camera and a lighting device on the movable head, and provides a display screen on the control panel on the outer tube, which is helpful to guide the biopsy forceps to deliver the peritoneal dialysis tube to the peritoneal dialysis site. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the bending structure of the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the limiting mechanism of the utility model;

[0023] Figure 5 This is an enlarged schematic diagram of the limiting mechanism of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the control panel of the utility model;

[0025] Figure 7 This is a schematic diagram of another usage of the utility model.

[0026] In the figure: outer cylinder-1, straight cylinder-101, wire-1011, limiting hole-1012, bending part-102, electrodeformable rod-1021, movable head-103, miniature camera-1031, lighting device-1032, control panel-2, power supply-201, control button-202, display screen-203, handle-3, connecting rod-301, grip ring-302, limiting mechanism-303, T-bar-3031, elastic element-3032, gear-3033, rack-3034, limiting block-3035, peritoneal dialysis tube-4. DETAILED DESCRIPTION

[0027] 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 of 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.

[0028] Embodiment 1:

[0029] See also Figure 1-7An auxiliary guide device for peritoneal dialysis comprises an outer tube 1, a handle 3 and a peritoneal dialysis tube 4, wherein a wire 1011 is arranged inside the wall of the outer tube 1, the outer tube 1 comprises a straight tube portion 101, a curved portion 102 and a movable head 103, the straight tube portion 101 is connected to the movable head 103 via the curved portion 102, the outer tube 1 is provided with a handle 3, the handle 3 comprises a connecting rod 301 and a grip ring 302, the handle 3 is fixedly connected to the straight tube portion 101 of the outer tube 1 via the connecting rod 301, a limiting hole 1012 is arranged at the connection between the connecting rod 301 and the straight tube 101, an electrodeformable rod 1021 is arranged inside the curved portion 102, and the electrodeformable rod 1021 is deformed and bent by powering on, thereby adjusting the angle of the movable head 103;

[0030] In this embodiment, the electrodeformable rod 1021 is made of an electrodeformable material, and the material of the electrodeformable material can change shape when electricity is applied. Electrodeformable material is a polymer material that can change shape through electric field stimulation. The working principle of electrodeformable material is usually based on the polarization effect or ion migration effect of polymer material. According to different mechanisms and material types, electrodeformable materials can be divided into multiple categories, including: electrostrictive material: this material can be stretched and deformed in one or more directions under electric field stimulation. Specific mechanisms include electrostrictive liquid crystal polymer (EAPLC), electrostrictive elastomer (EASEL), etc.; electropolymer artificial muscle material: this material can simulate the contraction and extension of human muscles under electric field stimulation and achieve similar shape changes. A typical type of artificial muscle material is electroinduced artificial creatine fiber (EAPACF); electroinduced shape memory polymer: this material can change from one shape to another shape under electric field stimulation, and return to its original shape when the electric field disappears. Electroinduced shape memory polymer (EAPSM) is a common type. Electrodeformable materials have a wide range of potential applications, such as in robotics, smart materials, biomedicine, and aerospace.

[0031] Embodiment 2:

[0032] See also Figure 1-7 According to Example 1, a limiting mechanism 303 is provided on the handle 3, and the limiting mechanism 303 is located in the connecting rod 301 of the handle 3. The limiting mechanism 303 includes a T-shaped rod 3031, a gear 3033 and a rack 3034. The gear 3033 is located between the T-shaped rod 3031 and the rack 3034. An elastic element 3032 is provided below the T-shaped rod 3031. A toothed protrusion is provided on the T-shaped rod 3032 to cooperate with the gear 3033. A limiting block 3035 is fixedly connected below the rack 3034, and the limiting block 3035 is located in the limiting hole 1012.

[0033] In this embodiment, the peritoneal dialysis tube 4 is inserted into the outer tube 1, and the T-shaped rod is pressed, and the limit block 3035 below the rack 3034 is moved upward through the gear transmission control to separate from the peritoneal dialysis tube 4, so that the peritoneal dialysis tube 4 can move in the outer tube 1;

[0034] The T-bar is released, and the T-bar 3031 moves upward under the action of the elastic element 3032, and the rack 3034 is controlled to move downward through the gear transmission, so that the limit block 3035 below the rack 3034 moves downward and contacts the peritoneal dialysis tube 4. The friction force generated by the contact limits the movement of the peritoneal dialysis tube 4 and locks the peritoneal dialysis tube 4.

[0035] Embodiment 3:

[0036] See also Figure 1-7 According to Embodiment 1, the movable head 103 is provided with an illumination device 1032 and a miniature camera 1031. The straight tube portion 101 of the outer tube 1 is provided with a control panel 2, the control panel 2 is provided with a power supply 201, and the control panel 2 is provided with control buttons 202 and a display screen 203. Through the camera 1031 and the illumination device 1032, the internal body conditions can be displayed through the display screen 203, which is helpful to guide the biopsy forceps to deliver the peritoneal dialysis tube 4 to the peritoneal dialysis site;

[0037] In this embodiment, the control button 202 can also be designed as a touch button to control the on and off of the current by touching.

[0038] Embodiment 4:

[0039] See also Figure 1-6 The above embodiments 1-3 are a use method of an auxiliary guide device for peritoneal dialysis of the present application, that is, during the operation, the peritoneal dialysis tube 4 is located in the outer tube, and the peritoneal dialysis tube 4 is delivered to the designated position through the outer tube 1, that is, it is used to fix the position of the catheter during the peritoneal dialysis catheterization operation. In order to allow the peritoneal dialysis tube 4 to enter the outer tube 1, the inner diameter of the outer tube 1 should be greater than 2.6 mm.

[0040] Embodiment 5:

[0041] See also Figure 7 , this embodiment is another use of the auxiliary guide device for peritoneal dialysis of the present application, that is, it is used for postoperative peritoneal dialysis tube 4 displacement reset after surgery, and adjusting the position of the implanted peritoneal dialysis catheter 4 in the body;

[0042] In this embodiment, the outer tube 1 is inserted into the peritoneal dialysis tube 4 implanted in the body, and the electrodeformable rod 1021 is deformed and bent by powering on, thereby adjusting the angle of the movable head 103 at the front end of the outer tube 1, so that the floating peritoneal dialysis tube 4 can be reset without the need for another operation, which can reduce trauma and pain for the patient. In order to allow the outer tube 1 to enter the peritoneal dialysis tube 4, the inner diameter of the outer tube 1 should be less than 2.6 mm.

[0043] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An auxiliary guide device for peritoneal dialysis, comprising an outer tube, a handle and a peritoneal dialysis tube, characterized in that: The outer cylinder comprises a straight portion, a curved portion and a movable head, the straight portion is connected to the movable head via the curved portion, a handle is provided on the outer cylinder, an electrodeformable rod is provided in the curved portion, and the electrodeformable rod is controlled to deform and bend by powering on to adjust the angle of the movable head; The handle is provided with a limiting mechanism, the handle comprises a connecting rod and a grip ring, the handle is fixedly connected to the straight tube portion of the outer tube through the connecting rod, a limiting hole is provided at the connection between the connecting rod and the straight tube, and the limiting mechanism is located in the connecting rod of the handle; The limiting mechanism includes a T-shaped rod, a gear and a rack. The gear is located between the T-shaped rod and the rack. An elastic element is provided under the T-shaped rod. A toothed protrusion is provided on the T-shaped rod to cooperate with the gear. The rack meshes with the gear. A limiting block is fixedly connected under the rack, and the limiting block slides in the limiting hole.

2. An auxiliary guide device for peritoneal dialysis according to claim 1, characterized in that: The electrodeformable rod is made of an electrodeformable material, and the deformation and bending of the electrodeformable rod is controlled by different currents and voltages.

3. The auxiliary guide device for peritoneal dialysis according to claim 1, characterized in that: The movable head is provided with a lighting device and a micro camera.

4. The auxiliary guide device for peritoneal dialysis according to claim 1, characterized in that: A control panel is arranged on the straight tube portion of the outer tube, a power source is arranged inside the control panel, and control buttons and a display screen are arranged on the control panel.

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