Puncture device for hemodialysis

Abstract

The invention provides a puncture device for hemodialysis, and relates to the technical field of medical instruments. The mounting mechanism comprises an arm frame and a magic tape, and the arm frame is of an arc-shaped plate-shaped structure; when dialysis is completed and the puncture device needs to be taken down, the rotating piece is rotated to enable the notch in the rotating piece to coincide with the sliding groove, in this way, the rotating piece can lose limiting on the needle head, the needle head is pushed by the elastic piece to straightly retract into the shell, and compared with a traditional manual needle withdrawing mode, the needle withdrawing mode has the advantages that the needle withdrawing efficiency is improved, and the needle withdrawing efficiency is improved. According to the hemodialysis puncture device, damage to the skin of a patient caused by movement of a needle head can be reduced, and the problems that in the design of an existing hemodialysis puncture device, due to the fact that the extraction direction is difficult to grasp when a medical worker manually extracts the puncture device from the body of the patient, the skin of the puncture part is prone to being torn, and the puncture effect is poor are solved. Therefore, the patient is hurt.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly relates to a puncture device for hemodialysis. Background Art

[0002] Hemodialysis is one of the kidney replacement treatment methods for patients with acute and chronic renal failure. It involves draining the blood in the body to the outside, passing it through a dialyzer composed of countless hollow fibers, and performing material exchange through the principles of diffusion, ultrafiltration, adsorption, and convection to remove metabolic wastes in the body, maintain electrolyte and acid-base balance; at the same time, remove excess water in the body, and the whole process of returning the purified blood back is called hemodialysis. During dialysis, a puncture device is needed to connect the catheter to the patient's blood vessel.

[0003] For example, the patent application number: CN202021587106.3 involves a puncture needle for hemodialysis, which includes a fixed strip, a device body, and a telescopic mechanism. The device body includes a fixed piece. One end of the fixed strip is fixedly connected to a piece seat, and the piece seat is fixedly connected to the fixed piece. A fixed ring is arranged on the outer surface of the fixed strip, a fixed bolt is arranged inside the fixed ring, one end of the fixed bolt is fixedly connected to a spring, and the spring is fixedly connected to the fixed ring. A button is arranged on the lower surface of the fixed bolt, and a gear is arranged at one end of the upper surface of the button, and the gear rotates with the fixed ring; by designing the piece seat, fixed strip, fixed ring, button, and fixed bolt installed on the lower surface of the fixed piece, it is convenient to fix the external infusion tube, effectively avoiding the problem of disconnection due to external force pulling during its use.

[0004] However, there are some deficiencies in the current design of hemodialysis puncture devices. First, when medical staff manually withdraw the puncture device from the patient, it is difficult to grasp the withdrawal direction, which easily causes the skin at the puncture site to be torn, thus causing harm to the patient. Moreover, when the existing hemodialysis puncture device is in use, due to the lack of an auxiliary puncture device, the needle is prone to skew during the puncture process, resulting in the need for secondary puncture of the patient. Summary of the Invention

[0005] In view of the above problems, the present invention proposes a puncture device for hemodialysis, which can avoid damaging the skin at the puncture site when withdrawing the needle, and can also make the needle travel in a straight line during puncture to prevent skew during puncture.

[0006] In the first aspect of the present disclosure, a puncture device for hemodialysis is provided, specifically including: a mounting mechanism; the mounting mechanism includes an armrest and a magic tape, the armrest is an arc-shaped plate structure; the magic tape is provided at the bottom of the armrest; a connection mechanism is provided on the mounting mechanism, the sliding frame of the connection mechanism is in the moving groove inside the armrest, and both sides of the sliding frame are slidably matched with the guiding grooves on both sides of the armrest, and the ejector rod on the sliding frame penetrates through the guiding groove; a puncture mechanism is provided on the connection mechanism, the housing of the puncture mechanism is provided inside the sliding frame, and the docking groove on the rotating member outside the sliding frame is inserted and matched with the docking block on the ejector rod inside the sliding frame.

[0007] Preferably, the mounting mechanism includes: a moving groove and a guiding groove; the moving groove is opened inside the armrest and penetrates through the front side of the armrest; the guiding grooves are symmetrically opened at both ends of the front side of the armrest and are communicated with the moving groove.

[0008] Preferably, the connection mechanism includes: a sliding frame and an activity groove; both sides of the sliding frame are rectangular structures; the activity grooves are symmetrically opened inside the rectangular structures on both sides of the sliding frame and penetrate through both sides of the sliding frame.

[0009] Preferably, the connection mechanism includes: an ejector rod and a docking block; the ejector rod is located on both sides of the sliding frame, penetrates through the activity groove, and an elastic member is provided between the ejector rod and the inside of the sliding frame; the docking block is provided at one end of the ejector rod close to the inside of the sliding frame.

[0010] Preferably, the puncture mechanism includes: a housing and a side plate; the housing is a cylindrical structure and the inside of the housing is hollow; the side plate is provided at the outer side end of the housing.

[0011] Preferably, the puncture mechanism includes: an external groove and a sliding groove; the external groove is opened at the outer side end of the housing and is located at a position opposite to the side plate; the sliding groove is opened at the side end of the housing and is communicated with the external groove.

[0012] Preferably, the puncture mechanism includes: a rotating member and a docking groove; the rotating member is a C-shaped structure and has a notch, is rotatably installed on the external groove, and the notch on the rotating member is staggered from the sliding groove; the docking grooves are symmetrically opened on both sides of the rotating member.

[0013] Preferably, the puncture mechanism includes: a needle and a guiding rod; the needle is slidably installed inside the housing through an elastic member, and the needle can extend from one side of the housing, and the catheter connected to the needle penetrates through the housing; the guiding rod is fixedly installed at the side end of the needle, is slidably matched with the sliding groove, and abuts against the rotating member.

[0014] The present invention provides a puncture device for hemodialysis, which has the following beneficial effects:

[0015] 1. The present invention provides a puncture mechanism, wherein the needle is slidably installed inside the shell, so that the guide rod at the outer end of the needle is slidably matched with the slide groove on the shell, and a rotating member is rotatably installed on the external groove at the outer end of the shell, so that the notch on the rotating member is staggered with the slide groove, and the guide rod on the needle is against the rotating member. When the puncture device needs to be removed after dialysis is completed, the rotating member is rotated so that the notch on the rotating member coincides with the slide groove, so that the rotating member can lose the limit on the needle, and the needle is pushed by the elastic member and directly retracted into the shell. Compared with the traditional manual needle removal method, this needle removal method can reduce the damage to the patient's skin caused by the movement of the needle.

[0016] 2. The present invention provides an installation mechanism and a connecting mechanism, wherein a sliding frame is slidably installed in a movable groove inside an arm frame, and push rods with docking blocks are movably installed on both sides of the sliding frame. The puncture mechanism is installed in the sliding frame, and the docking blocks are inserted into the docking grooves at the side ends of the rotating parts. When in use, the arm frame is fixed to the part requiring puncture, and the shell is pushed, so that the shell can move in a straight line along the arm frame through the sliding frame, and then the needle is punctured into the patient's body. This ensures that the needle moves in a straight line during puncture, and prevents the needle from being skewed during puncture. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings will provide a better understanding of the present disclosure and more clearly demonstrate the advantages of the present disclosure. The drawings described herein are for illustrative purposes only of selected embodiments, not all possible implementations, and are not intended to limit the scope of the present disclosure.

[0018] In the attached picture:

[0019] Figure 1 A schematic diagram of a three-dimensional structure according to an embodiment of the present invention is shown.

[0020] Figure 2 A bottom view structural schematic diagram according to an embodiment of the present invention is shown.

[0021] Figure 3 A schematic diagram of a decomposed structure according to an embodiment of the present invention is shown.

[0022] Figure 4 A schematic diagram of a cut-away cross-sectional structure according to an embodiment of the present invention is shown.

[0023] Figure 5 A schematic diagram of the connection structure of the mounting mechanism and the connecting mechanism according to an embodiment of the present invention is shown.

[0024] Figure 6 A schematic diagram of a partial connection structure of a connecting mechanism and a puncture mechanism according to an embodiment of the present invention is shown.

[0025] Figure 7Shows a three-dimensional structural schematic diagram of a puncture mechanism according to an embodiment of the present invention.

[0026] Figure 8 Shows a schematic diagram of the needle retraction effect of the puncture mechanism according to an embodiment of the present invention.

[0027] List of reference numerals

[0028] 1. Installation mechanism; 101. Armrest; 1011. Magic tape; 102. Moving groove; 1021. Guide groove;

[0029] 2. Connection mechanism; 201. Sliding frame; 2011. Activity groove; 202. Thumb rod; 2021. Docking block;

[0030] 3. Puncture mechanism; 301. Housing; 3011. Side plate; 302. External groove; 303. Slide groove; 304. Rotating part; 3041. Docking groove; 305. Needle; 3051. Guide rod. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0032] Embodiment 1: Please refer to Figures 1 to 8 as shown:

[0033] The present invention provides a puncture device for hemodialysis, including: an installation mechanism 1; the installation mechanism 1 includes an armrest 101 and a magic tape 1011, the armrest 101 is an arc-shaped plate structure; the magic tape 1011 is arranged at the bottom of the armrest 101; a connection mechanism 2 is arranged on the installation mechanism 1, the sliding frame 201 of the connection mechanism 2 is located in the moving groove 102 inside the armrest 101, and both sides of the sliding frame 201 are slidably matched with the guide grooves 1021 on both sides of the armrest 101, and the thumb rod 202 on the sliding frame 201 penetrates through the guide groove 1021; a puncture mechanism 3 is arranged on the connection mechanism 2, the housing 301 of the puncture mechanism 3 is arranged inside the sliding frame 201, and the docking groove 3041 on the rotating part 304 outside the sliding frame 201 is inserted and matched with the docking block 2021 on the thumb rod 202 inside the sliding frame 201.

[0034] In the embodiments of the present disclosure, as Figure 4 and 5As shown in the figure, the installation mechanism 1 includes: a moving groove 102 and a guiding groove 1021; the moving groove 102 is opened on the inner side of the boom 101, and the moving groove 102 penetrates through the front side of the boom 101; the guiding grooves 1021 are symmetrically opened at both ends of the front side of the boom 101, and the guiding grooves 1021 communicate with the moving groove 102.

[0035] In this application, by providing the arc-shaped plate-like boom 101, when the boom 101 is attached to the patient's arm, the needle 305 of the puncture mechanism can be inserted into the patient's arm along the boom 101; by providing the magic tape 1011, the boom 101 can be fixed to the patient's arm through the magic tape 1011; by providing the rectangular moving groove 102, by slidingly connecting the sliding frame 201 with the moving groove 102, the sliding frame 201 can be slidably installed into the boom 101 through the moving groove 102; by providing the rectangular guiding groove 1021, by slidably mating both sides of the sliding frame 201 with the guiding groove 1021, the sliding frame 201 can slide in the moving groove 102 along the guiding groove 1021.

[0036] As the third embodiment of this application, on the basis of the first embodiment, as Figure 5 and 6 shown in the figure, the connecting mechanism 2 includes: a sliding frame 201 and a movable groove 2011; both sides of the sliding frame 201 are rectangular structures; the movable grooves 2011 are symmetrically opened in the rectangular structures on both sides of the sliding frame 201, and the movable grooves 2011 penetrate through both sides of the sliding frame 201; a top rod 202 and a docking block 2021; the top rod 202 is located on both sides of the sliding frame 201, and the top rod 202 penetrates through the movable groove 2011, and an elastic member is provided between the top rod 202 and the inside of the sliding frame 201; the docking block 2021 is provided at one end of the top rod 202 close to the inner side of the sliding frame 201.

[0037] In this application, by providing the C-shaped sliding frame 201, when the housing 301 is installed on the sliding frame 201, the housing 301 can be slidably installed on the boom 101 through the sliding frame 201; by providing the vertical rectangular movable groove 2011, the top rod 202 can be slidably installed on the sliding frame 201 through the movable groove 2011, and the top rod 202 can move up and down on the sliding frame 201; by providing the top rod 202 with a pull ring, the housing 301 can be movably installed on the sliding frame 201 through the top rod 202; by providing the rectangular docking block 2021, by inserting and mating the docking block 2021 with the docking groove 3041, the top rod 202 can be connected and fixed to the rotating member 304.

[0038] As the fifth embodiment of this application, on the basis of the first embodiment, as Figure 7 and 8As shown, the puncture mechanism 3 includes: a shell 301 and a side plate 3011; the shell 301 is a cylindrical structure, and the interior of the shell 301 is hollow; the side plate 3011 is arranged at the outer side end of the shell 301; an external groove 302 and a slide groove 303; the external groove 302 is arranged at the outer side end of the shell 301, and the external groove 302 is located at a position opposite to the side plate 3011; the slide groove 303 is arranged at the side end of the shell 301, and the slide groove 303 is connected to the external groove 302; a rotating member 304 and a docking groove 3041; the rotating member 304 is a C-shaped structure, and the rotating member 304 is provided with The housing 301 has a notch and is rotatably mounted on the external groove 302. The notch on the rotating member 304 is staggered with the slide groove 303. The docking grooves 3041 are symmetrically arranged on both sides of the rotating member 304. There is a needle 305 and a guide rod 3051. The needle 305 is slidably mounted inside the housing 301 through an elastic member, and the needle 305 can extend from one side of the housing 301, and the catheter connected to the needle 305 passes through the housing 301. The guide rod 3051 is fixedly mounted on the side end of the needle 305, and the guide rod 3051 is slidably matched with the slide groove 303, and the guide rod 3051 is against the rotating member 304.

[0039] The present application provides a cylindrical shell 301, so that the needle 305 can be installed inside the shell 301; a rectangular side plate 3011 is provided, and the shell 301 can be taken by holding the side plate 3011; an external groove 302 is provided, and the rotating member 304 can be rotatably installed to the outer end of the shell 301 through the external groove 302; a rectangular slide groove 303 is provided, and the slide groove 303 and the guide rod 3051 are slidably matched, so that the needle 305 can slide inside the shell 301 to guide the needle 305; a C-shaped annular rotating member is provided. 304, by making the rotating member 304 press against the guide rod 3051, the needle 305 can be fixed inside the shell 301; a rectangular docking groove 3041 is set, and the rotating member 304 can be connected to the top rod 202 by plugging the docking groove 3041 with the docking block 2021; the needle 305 is set and can be used to puncture the patient; a cylindrical guide rod 3051 is set, and the guide rod 3051 is slidably matched with the slide groove 303, so that the needle 305 can be slidably installed inside the shell 301.

[0040] The specific usage and function of this embodiment are as follows:

[0041] In the present invention, Figures 1 to 8As shown, fix the boom 101 to the position where the patient needs to be punctured through the magic tape 1011. Then, slidably install the sliding frame 201 inside the boom 101, so that the two groups of ejector rods 202 on the sliding frame 201 extend out from the guiding grooves 1021 on both sides of the boom 101. Slidably install the needle 305 inside the housing 301, and rotatably install the rotating member 304 in the external groove 302 at the outer end of the housing 301. Slide the needle 305 so that the part with the tip extends out from the inside of the housing 301. Then, rotate the rotating member 304 so that the guiding rod 3051 of the needle 305 abuts against the rotating member 304 to fix the needle 305 on the housing 301. Place the housing 301 inside the sliding frame 201, so that the docking blocks 2021 on the two groups of ejector rods 202 are inserted into the docking grooves 3041 of the rotating member 304. Then, by pushing the side plate 3011, make the housing 301 move linearly along the moving groove 102 through the sliding frame 201, and complete the puncture of the patient during the movement. When the needle 305 penetrates the body, untie the magic tape 1011, then pull the ejector rods 202 to both sides to make the docking blocks 2021 disengage from the docking grooves 3041, and then remove the boom 101 from the patient's body. At this time, the puncture work for the patient's dialysis is completed.

Claims

1. A puncture device for hemodialysis, comprising: The mounting mechanism (1) comprises an arm frame (101) and a magic belt (1011), wherein the arm frame (101) is an arc-shaped plate-shaped structure; the magic belt (1011) is arranged at the bottom of the arm frame (101); the mounting mechanism (1) is characterized in that a connecting mechanism (2) is arranged on the mounting mechanism (1), a sliding frame (201) of the connecting mechanism (2) is located in a moving groove (102) in the arm frame (101), and two sides of the sliding frame (201) are in contact with the arm frame (101). 1) The guide grooves (1021) on both sides are slidably matched, and the push rod (202) on the sliding frame (201) passes through the guide groove (1021); the connecting mechanism (2) is provided with a puncture mechanism (3), the housing (301) of the puncture mechanism (3) is arranged on the inner side of the sliding frame (201), and the docking groove (3041) on the rotating member (304) outside the sliding frame (201) is plug-fitted with the docking block (2021) on the push rod (202) inside the sliding frame (201).

2. A puncture device for hemodialysis according to claim 1, characterized in that: The mounting mechanism (1) comprises: a movable groove (102) and a guide groove (1021); the movable groove (102) is arranged on the inner side of the arm frame (101), and the movable groove (102) passes through the front side of the arm frame (101); the guide groove (1021) is symmetrically arranged at both ends of the front side of the arm frame (101), and the guide groove (1021) is connected to the movable groove (102).

3. A puncture device for hemodialysis according to claim 1, characterized in that: The connecting mechanism (2) comprises: a sliding frame (201) and a movable groove (2011); the two sides of the sliding frame (201) are rectangular structures; the movable groove (2011) is symmetrically arranged in the rectangular structures on the two sides of the sliding frame (201), and the movable groove (2011) runs through the two sides of the sliding frame (201).

4. A puncture device for hemodialysis according to claim 3, characterized in that: The connection mechanism (2) comprises: a push rod (202) and a docking block (2021); the push rod (202) is located on both sides of the sliding frame (201), the push rod (202) passes through the movable groove (2011), and an elastic member is provided between the push rod (202) and the inside of the sliding frame (201); the docking block (2021) is provided at one end of the push rod (202) close to the inner side of the sliding frame (201).

5. A puncture device for hemodialysis according to claim 1, characterized in that: The puncture mechanism (3) comprises: a shell (301) and a side plate (3011); the shell (301) is a cylindrical structure, and the interior of the shell (301) is hollow; the side plate (3011) is arranged at the outer side end of the shell (301).

6. A puncture device for hemodialysis according to claim 5, characterized in that: The puncture mechanism (3) comprises: an external groove (302) and a slide groove (303); the external groove (302) is provided at the external side end of the shell (301), and the external groove (302) is located at a position opposite to the side plate (3011); the slide groove (303) is provided at the side end of the shell (301), and the slide groove (303) is connected to the external groove (302).

7. A puncture device for hemodialysis according to claim 6, characterized in that: The puncture mechanism (3) comprises: a rotating member (304) and a docking groove (3041); the rotating member (304) is a C-shaped structure, and a notch is provided on the rotating member (304), which is rotatably mounted on the external groove (302), and the notch on the rotating member (304) is staggered with the slide groove (303); the docking groove (3041) is symmetrically arranged on both sides of the rotating member (304).

8. A puncture device for hemodialysis according to claim 7, characterized in that: The puncture mechanism (3) comprises: a needle (305) and a guide rod (3051); the needle (305) is slidably mounted inside the housing (301) via an elastic member, and the needle (305) can extend from one side of the housing (301), and a catheter connected to the needle (305) passes through the housing (301); the guide rod (3051) is fixedly mounted on the side end of the needle (305), and the guide rod (3051) is slidably matched with the slide groove (303), and the guide rod (3051) is against the rotating member (304).

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