Ascites collection device

Abstract

The application provides an ascites collection device, and belongs to the technical field of medical devices, to solve the problems of complex structure, high cost and inability to adjust the angle of the puncture needle when puncturing the patient's skin in the prior art. The height-adjustable fixing base is clamped on one side of the hospital bed, and then the needle tip angle adjusting mechanism is used to adjust the needle insertion angle of the puncture needle arranged on the collection needle tube, and then the needle head sliding positioning mechanism is used to adjust the specific position of the puncture needle arranged on the collection tube. Thus, the ascites provided by the application can be matched and connected with any hospital bed on the market, the structure is simple, the installation is convenient, and the needle tip angle adjusting mechanism can adjust the needle insertion angle of the puncture needle on the collection needle tube, which is convenient for medical staff to operate.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a device for collecting ascites. Background Technology

[0002] Ascites is a fluid accumulation in the abdominal cavity. Various diseases can cause ascites, and it is generally treated with a corresponding paracentesis device to absorb and collect the fluid. However, during the paracentesis process, the needle must be inserted accurately into the patient's body. If the needle insertion position and angle are inaccurate, the ascites cannot be drained, and the needle must be reinserted.

[0003] Patent CN113952148A discloses a peritoneal fluid collection system for gastroenterology. The system has a U-shaped plate slidably installed on the top of the bed. The U-shaped plate has a first groove and two second sliders. The two second sliders have an arc-shaped binding plate at their close ends. A groove is opened on the top of the U-shaped plate to place a negative pressure collection bottle, a threaded tube, and a needle. The technical solution uses the arc-shaped binding plate and the U-shaped plate to fix the patient's abdomen, and uses a second handwheel and a threaded tube to drive the needle to insert into the patient's abdominal cavity.

[0004] However, the above-mentioned technical solution requires the system to include a bed, and the patient needs to lie on the bed so that puncture can be performed through the cavity formed between the U-shaped plate and the bed. The structure is complex and the cost is too high. Moreover, the threaded tube with the needle is located directly above the U-shaped plate, and it can only adjust the vertical height of the needle, but cannot adjust the angle at which the puncture needle enters the patient's skin. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide an ascites collection device that solves the problems of complex structure, high cost and inability to adjust the angle of the puncture needle when it enters the patient's skin in current ascites collection systems.

[0006] The technical concept of this invention is as follows: a height-adjustable fixed base is clamped to one side of the hospital bed, and then the insertion angle of the puncture needle set on the collection needle tube is adjusted by the needle tip angle adjustment mechanism. Then, the specific position of the puncture needle set on the collection tube is adjusted by the needle tip sliding positioning mechanism. In this way, the ascites effusion provided by this invention can be matched and connected with any hospital bed on the market. It has a simple structure, is easy to install, and the needle tip angle adjustment mechanism can adjust the insertion angle of the puncture needle on the collection needle tube, which is convenient for medical staff to operate.

[0007] Based on the above technical concept, the technical solution adopted by this invention is as follows: An ascites collection device includes a collection needle and a fixed base; the fixed base is fixedly mounted on one side of a bed; it also includes a bracket, a needle sliding positioning mechanism, and a needle tip angle adjustment mechanism; the needle sliding positioning mechanism and the needle tip angle adjustment mechanism are both mounted on the bracket; One end of the needle sliding positioning mechanism is connected to the fixed base to slide in the sliding groove, and the other end is connected to the bracket for positioning the collecting needle tube. One end of the needle tip angle adjustment mechanism is connected to the bracket, and the other end is connected to the collecting needle tube through the syringe holder. It is used to control the collecting needle tube to rotate with its needle tip as the center to adjust the insertion angle of the puncture needle set on the collecting needle tube.

[0008] In the above technical solution, preferably, the needle tip angle adjustment mechanism includes: a needle tip angle adjustment handle, a first connecting rod group, a second slider, and a first arc-shaped track; the second slider is disposed on the first arc-shaped track; The needle tip angle adjustment handle passes through the bracket and is connected to one end of the first connecting rod group; The other end of the first connecting rod assembly is connected to the second slider.

[0009] Further defining the above technical solution, the first connecting rod assembly includes: a U-shaped connecting rod and a rocker arm; one end of the U-shaped connecting rod is connected to the second slider, and the other end is connected to the needle tip angle adjustment handle via the rocker arm.

[0010] Furthermore, the U-shaped connecting rod in the above technical solution includes four connecting rods; the four connecting rods are rotatably connected to each other.

[0011] Further limitations on the above technical solution include a second arc-shaped track; the second arc-shaped track and the first arc-shaped track are arranged with the same center.

[0012] The above technical solution is further specified by including a second connecting rod group; one end of the second connecting rod group is connected to the first connecting rod group, and the other end is connected to the bracket through a connecting shaft.

[0013] Further defining the above technical solution, the needle sliding positioning mechanism includes: a needle positioning handle and a first slider; The first slider has a square structure with a through hole in the center; The first slider is mounted on the fixed base; The needle positioning handle is fixedly connected to the bracket through the through hole.

[0014] As a further limitation of the above technical solution, the fixed base is a height-adjustable structure.

[0015] The beneficial effects of this invention are: The ascites collection device provided by this invention allows medical personnel to adjust the angle between the puncture needle on the collection needle tube and the horizontal plane by rotating the needle tip angle adjustment handle in the needle tip angle adjustment mechanism, according to the needle insertion angle for puncture of the patient. After adjusting the insertion angle of the puncture needle on the collection needle tube, the puncture needle is positioned above the puncture site by rotating the needle tip positioning handle in the needle tip sliding positioning mechanism, and then the needle insertion and puncture are started to collect the ascites into the collection needle tube. The operation is simple.

[0016] Furthermore, the needle tip angle adjustment mechanism provided by this invention can be matched with all needles on the market, making it highly applicable and easy to assemble; in addition, the ascites collection device provided by this invention can be matched with all hospital beds on the market, with a simple structure, easy assembly, and low cost.

[0017] Furthermore, the collection tube provided by this invention rotates around the tip of the puncture needle under the drive of the first connecting rod assembly, thereby adjusting the insertion angle of the puncture needle. In this way, medical staff can rotate the puncture needle to any angle according to the operational needs, which meets the actual clinical operation requirements. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an ascites collection device provided in an embodiment of the present invention; Figure 2 for Figure 1 The diagram shows the connection relationship between the bracket, the needle sliding positioning mechanism, and the needle tip angle adjustment mechanism. Figure 3 This is a front view of the needle sliding positioning mechanism and the needle tip angle adjustment mechanism; Figure 4 Rear view of the needle sliding positioning mechanism and the needle tip angle adjustment mechanism; Figure 5 A magnified view showing the connection between the first connecting rod assembly and the needle tip angle adjustment handle; Figure 6 A magnified view showing the connection between the first connecting rod assembly and the second slider. Figure 7 A magnified view showing the connection between the second connecting rod assembly and the bracket; Figure 8 A magnified view showing the connection between the first connecting rod group and the second connecting rod group; Figure 9 This is a front view of the bracket; Figure 10 This is a schematic diagram of the joystick structure; Figure 11 This is a schematic diagram of the structure of the first slider; Figure 12 This is a schematic diagram of the second slider. Figure 13 This is a schematic diagram of the third slider. Figure 14 This is a schematic diagram of the syringe holder structure; Figure 15 This is a diagram showing the usage status of the first and second connecting rod assemblies.

[0020] The components include: 1. a needle collection tube; 11. a syringe; 12. a puncture needle; 2. a fixed base; 3. a syringe holder; 4. a support; 5. a needle tip sliding positioning mechanism; 51. a needle tip positioning handle; 52. a first slider; 6. a needle tip angle adjustment mechanism; 61. a needle tip angle adjustment handle; 62. a first connecting rod group; 62a. a U-shaped connecting rod; 62a-1. a connecting rod one; 62a-2. a connecting rod two; 62a-3. a connecting rod three; 62a-4. a connecting rod four; 62b. a rocker arm; 63. a second slider; 64. a second connecting rod group; 64a. a connecting rod five; 64b. a connecting rod six; 65. a connecting shaft; 66. a third slider; 67. a first pad; 68. a second pad; 69. a rotating connector; 7. a locking nut; 8. a heightening pin; 9. a sliding groove; 10. a fixing slot; 13. a first arc-shaped track; and 14. a second arc-shaped track. Detailed Implementation

[0021] 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.

[0022] In the description of this invention, it should be understood that the terms "length direction," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features limited to "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0024] This invention provides a device for collecting ascites fluid, such as... Figure 1-15 As shown, it includes a needle collection tube 1, a fixed base 2, a needle tube rack 3, a support 4, a needle tip sliding positioning mechanism 5, and a needle tip angle adjustment mechanism 6.

[0025] like Figure 1 As shown, the collecting syringe 1 can be any size syringe available on the market. Specifically, the collecting syringe 1 includes a syringe 11 and a puncture needle 12.

[0026] like Figure 14 As shown, the syringe holder 3 includes a syringe holder body and two fixing rings arranged above and below the syringe holder body. These two fixing rings are used to fix the syringe collecting tube 1. The two fixing rings are distributed on the same vertical line. The side of the syringe holder body away from the syringe collecting tube 1 is connected to the needle tip angle adjustment mechanism 6.

[0027] like Figure 1 As shown, the fixed base 2 has an "L" shaped structure, including a horizontal connecting rod and a vertical connecting rod, wherein a fixing slot 10 is provided on the vertical connecting rod. In actual use, the fixing slot 10 is locked onto the side of the hospital bed near the patient's abdomen, and then the rotary switch located below the fixing slot 10 is tightened to firmly lock the hospital bed into the fixing slot 10.

[0028] The transverse connecting rod is provided with a sliding groove 9, and one end of the needle sliding positioning mechanism 5 is engaged in the sliding groove 9 and can slide within the sliding groove 9. In actual use, the horizontal position of the needle sliding positioning mechanism 5 can be adjusted according to the needle insertion position on the patient's abdomen.

[0029] Specifically, the needle sliding positioning mechanism 5 includes a needle positioning handle 51 and a first slider 52.

[0030] like Figure 11 As shown, the first slider 52 has a square structure with a through hole in its center, through which the needle positioning handle 51 passes and is fixedly connected to the bracket 4. Specifically, the connection between the needle positioning handle 51 and the bracket 4 can be a bearing connection or an integral connection, etc.

[0031] In actual use, when the needle positioning handle 51 is turned, the bracket 4 rotates around its own center under the drive of the needle positioning handle 51, thereby driving the collection needle tube 1 set on the bracket 4 to rotate.

[0032] Specifically, the radius of the first arc-shaped track 13 is larger than the radius of the second arc-shaped track 14. Both the first arc-shaped track 13 and the second arc-shaped track 14 are provided with sliding grooves.

[0033] The needle tip angle adjustment mechanism 6 includes a needle tip angle adjustment handle 61, a first linkage group 62, a second slider 63, a third slider 66, a first arc track 13, and a second arc track 14.

[0034] Among them, such as Figure 9 As shown, the first arc track 13 and the second arc track 14 are arranged with the same center and are located at the end of the support 4; and the centers of the first arc track 13 and the second arc track 14 are on the same straight line; thus, in practical applications, the collecting needle tube 1 rotates on the arc track with the tip of the puncture needle 12 as the center.

[0035] The needle tip angle adjustment handle 61 passes through the bracket 4 and connects to the upper end of the first connecting rod group 63; the lower end of the first connecting rod group 63 is connected to the second slider 63. A rotating connector 69 is provided at the connection point between the bracket 4 and the needle tip angle adjustment handle 61 to allow the needle tip angle adjustment handle 61 to rotate.

[0036] The second slider 63 is disposed within the sliding groove of the first arc-shaped track 13. Specifically, as shown... Figure 12As shown, the second slider 63 is a block structure with a tightening nut at its rear end for securing the second slider block in the sliding groove of the first arc-shaped track 62; its front end has a mounting ring for connecting to the needle holder 3. In actual use, the second slider 63 slides within the sliding groove of the first arc-shaped track 13 by tightening the nut. After adjusting the angle of the puncture needle 12, the tightening nut is fixed, thus fixing the second slider 63 in the first arc-shaped track 13 and preventing it from shifting.

[0037] To more stably and securely connect the collecting syringe 1 to the syringe holder 3, the angle adjustment structure further includes a third slider 66. The third slider 66 is slidably disposed within the second sliding track 14. Specifically, as shown... Figure 13 As shown, the third slider 66 has a square structure and a mounting ring at its front end for connecting with the needle holder 3.

[0038] The mounting ring on the third slider 66 is the same as the mounting ring on the second slider 63, so as to connect with the needle holder body.

[0039] Furthermore, such as Figure 14 As shown, the needle holder 3 is also equipped with a locking nut 7, which is connected to the needle holder body. The needle holder body has a thread on its inner side that matches the locking nut 7. In actual use, the locking nut 7 can be rotated so that the needle holder body 3 can slide within the mounting ring to further adjust the height of the collection needle tube 1 set in the needle holder 3, making it easier to insert the collection needle tube 1 for puncture.

[0040] In practical use, the third slider 66 can slide within the sliding groove of the second sliding track 14. Based on this, the needle holder 3 is also connected to the third slider 66, so that both the upper and lower ends of the tube body 11 of the collecting needle tube 1 can be fixed, resulting in higher stability during needle insertion.

[0041] The first connecting rod assembly 62 is a movable connecting member. Specifically, as shown... Figure 5 , Figure 6 and Figure 10 As shown, the first connecting rod group 62 includes a U-shaped connecting rod 62a and a rocker arm 62b.

[0042] The rocker arm 62b is a plate-shaped structure with a square through hole in the middle, used to connect with the needle tip angle adjustment handle 61; a mounting hole is also provided below the square through hole for rotatable connection with the first connecting rod assembly 62. In this way, when the needle tip angle adjustment handle 61 is rotated, the rocker arm 62b rotates along with the needle tip angle adjustment handle 61.

[0043] like Figure 3 and 4As shown, the U-shaped connecting rod 62a is a movable connecting component, comprising four identical connecting rods: connecting rod one 62a-1, connecting rod two 62a-2, connecting rod three 62a-3, and connecting rod four 62a-4. Specifically, each of the four connecting rods is a square structure with mounting holes at both ends, and the four connecting rods are rotatably connected; specifically, the four connecting rods are rotatably connected by pins.

[0044] The upper ends of connecting rod 62a-1 and connecting rod 62a-2 are respectively connected to rocker arm 62b.

[0045] The upper end of connecting rod 3 62a-3 is rotatably connected to connecting rod 1 62a-1, and its lower end is rotatably connected to the second slider 63; The upper end of connecting rod 4 62a-4 is rotatably connected to connecting rod 2 62a-2, and its lower end is rotatably connected to the second slider 63.

[0046] To further limit the sliding range of the second slider 63, a second connecting rod assembly 64 is also included. For example... Figure 7 and 8 As shown, the second connecting rod group 64 includes connecting rod five 64a and connecting rod six 64b.

[0047] Among them, connecting rod five 64a and connecting rod six 64b have the same structure, both of which are square structures and are provided with square sliding grooves; thus, during the rotation of the first connecting rod group 62 around the connecting shaft 65, the square sliding grooves restrict the rotation range of the rocker arm 62b, thereby restricting the rotation range of the first connecting rod group 62, and also restricting the sliding range of the second slider 63 connected to the first connecting rod group 62.

[0048] Furthermore, the rotation range of the first connecting rod group 62 can be set by setting the length of the square sliding groove in the longitudinal direction of the connecting rod 64a, thereby limiting the sliding range of the second slider 63.

[0049] The upper ends of connecting rod 5 64a and connecting rod 64b are respectively connected to bracket 4 via connecting shaft 65. Specifically, a first pad 67 is provided between connecting rod 5 64a and connecting rod 64b, and between connecting rod 64b and bracket 4.

[0050] like Figure 8 As shown, the lower end of connecting rod 5 64a is rotatably connected to connecting rod 1 62a-1 and connecting rod 3 62a-3 respectively by raising pin 8; wherein, a second pad 68 is provided between connecting rod 5 64a and the first connecting rod group 62, so that the four connecting rods of the first connecting rod group 62 and the two connecting rods of the second connecting rod group 64 are at different heights when viewed from the side, so that the connecting rods will not affect each other when rotating.

[0051] Connecting rod 64b is rotatably connected to connecting rod 62a-2 and connecting rod 62a-4 respectively; specifically, this connection method is a bearing connection.

[0052] In practical applications, regardless of whether the first connecting rod group 62 moves to the left or right, the first connecting rod group 62 drives the second connecting rod group 64 to move accordingly. The square sliding grooves provided on the connecting rod five 64a and the connecting rod six 64b limit the rotation range of the first connecting rod group 62.

[0053] It should be noted that this embodiment is illustrated by taking the rotation range of the needle tip angle adjustment handle 61 as half a circle, the corresponding rotation range of the rocker arm 62b as half a circle, and the second slider 63 sliding in the sliding groove of the first arc-shaped track 62 for the entire course.

[0054] like Figure 15 The diagram shown illustrates the usage state of the needle tip angle adjustment mechanism 6 controlling the angle of the collecting needle tube 1, as exemplified in an embodiment of the present invention. The working principle of the needle tip angle adjustment mechanism 6 is as follows: If the initial position of the second slider 63 is the leftmost side of the first arc track 13, there are two possible scenarios: Scenario 1: When the needle tip angle adjustment handle 61 is rotated clockwise by a quarter turn, the rocker arm 62b rotates clockwise by a quarter turn as the needle tip angle adjustment handle 61 rotates clockwise. The rocker arm 62b drives the first connecting rod group 62 to rotate to the right around the connecting shaft 65. In turn, the first connecting rod group 62 drives the second slider 63 to move to the right within the first arc track 13. At this time, the second slider 63 receives an upward pulling force from the first connecting rod group 62, so that the second slider 63 is located at the highest point in the sliding groove of the first arc track 62. At this time, under the action of the second slider 63, the needle holder 3 drives the collecting needle tube 1 to be in a vertical state. Finally, tighten the tightening nut set at the rear end of the second slider 63 to fix the second slider 63 on the first arc track 63, thereby adjusting the insertion angle of the puncture needle 12 to be perpendicular to the patient's skin.

[0055] Scenario 2: When the needle tip angle adjustment handle 61 is rotated clockwise by half a turn, the rocker arm 62b rotates clockwise by half a turn along with the needle tip angle adjustment handle 61. The rocker arm 62b drives the first connecting rod group 62 to move to the right. At this time, the second slider is pushed downward by the first connecting rod group 62, causing the second slider 63 to slide to the highest point of the first arc track 62 and continue to move to the right, so that the second slider 63 is at the lowest point on the right side of its sliding range. At this time, driven by the second slider 63, the angle between the needle tube holder 63 and the horizontal direction is the smallest, so that the angle between the puncture needle 12 of the collecting needle tube 1 and the patient's skin is the smallest. Finally, tighten the tightening nut set at the rear end of the second slider 63, so that the second slider 63 is fixed on the first arc track 63, thereby adjusting the insertion angle of the puncture needle 12.

[0056] If the initial position of the second slider 63 is the rightmost side of the first arc track 13, there are two possible scenarios: Scenario 1: Rotate the needle tip angle adjustment handle 61 counterclockwise by a quarter turn. The rocker arm 62b rotates counterclockwise by a quarter turn along with the needle tip angle adjustment handle 61. The rocker arm 62b drives the first connecting rod group 62 to rotate to the left around the connecting shaft 65. At this time, the second slider 63 is pulled by the first connecting rod group 62, so that the second slider 63 is at the highest point of the sliding groove of the first arc track 63. At this time, under the action of the second slider 63, the needle holder 3 drives the collecting needle tube 1 to be in a vertical state. Finally, tighten the tightening nut set at the rear end of the second slider 63, so that the second slider 63 is fixed on the first arc track 63, thereby adjusting the insertion angle of the puncture needle 12 to be perpendicular to the patient's skin.

[0057] Scenario 2: Rotate the needle tip angle adjusting handle 61 counterclockwise by half a turn. The rocker arm 62b rotates counterclockwise by half a turn along with the needle tip angle adjusting handle 61. The rocker arm 62b drives the second slider 63 to the highest point of the sliding groove of the first arc track 63 through the first connecting rod group 62. The second slider 63 is then pushed downward by the first connecting rod group 62, causing the second slider 63 to continue sliding to the left until the second slider 63 is at the lowest point on the left side of its rotation range. At this time, under the action of the second slider 63, the angle between the needle holder 3 and the horizontal plane is the smallest. At this time, the angle between the puncture needle 12 and the patient's skin is the smallest, and the needle insertion angle is opposite to the angle between the puncture needle 12 and the patient's skin when the needle tip angle adjusting handle 61 is rotated clockwise by one turn. Finally, tighten the tightening nut set at the rear end of the second slider 63 to fix the second slider 63 on the first arc track 63, thereby adjusting the needle insertion angle of the puncture needle 12.

[0058] In the above scenarios, the collecting needle tube 1 rotates around the tip of the puncture needle 12 under the drive of the first connecting rod assembly 62. In practical applications, the insertion angle of the puncture needle 12 can be determined according to operational requirements, and the tightening nut provided behind the second slider 63 can be tightened to fix it on the first arc-shaped track 62.

[0059] The specific usage process of the ascites collection device provided in this embodiment of the invention is as follows: Step 1: Secure the fixing slot 10 to the side of the bed frame near the patient's abdomen, and tighten the rotary switch at the lower end of the fixing slot 10 so that the bed is securely locked in the fixing slot 10.

[0060] Step 2: Adjust the height of the longitudinal adjustment rod so that the collection needle 1 is positioned above the patient.

[0061] Step 3: Based on the patient's needle insertion position, rotate the needle tip angle adjustment handle 61 to drive the first connecting rod assembly 62 to rotate left or right around the connecting shaft 65. In turn, the first connecting rod assembly 62 drives the second slider 63 to slide on the first arc track 13. After determining the insertion angle of the puncture needle 12, tighten the tightening nut set at the rear end of the second slider 63 to fix the second slider 63 on the first arc track 63, thereby adjusting the insertion angle of the puncture needle 12.

[0062] Step 4: Manually adjust the first slider 52 to adjust the horizontal position of the puncture needle 12, and rotate the needle positioning handle 51 to position the puncture needle 12 above the position to be punctured. This positions the puncture needle 12 in a convenient position for needle insertion, and then the needle insertion can begin to draw the patient's abdominal fluid into the syringe 11.

[0063] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A device for collecting ascites fluid, comprising a collection needle (1) and a fixing base (2); the end of the fixing base (2) is fixedly disposed on one side of a bed; characterized in that, It also includes: a bracket (4), a needle sliding positioning mechanism (5), and a needle tip angle adjustment mechanism (6); the needle sliding positioning mechanism (5) and the needle tip angle adjustment mechanism (6) are both mounted on the bracket (4); One end of the needle sliding positioning mechanism (5) is connected to the fixed base (2) to slide in the sliding groove (9), and the other end is connected to the bracket (4) for positioning the collecting needle tube (1). One end of the needle tip angle adjustment mechanism (6) is connected to the bracket (4), and the other end is connected to the collecting needle tube (1) through the syringe frame (3). It is used to control the collecting needle tube (1) to rotate with its needle tip as the center to adjust the insertion angle of the puncture needle set on the collecting needle tube (1). The needle tip angle adjustment mechanism (6) includes: a needle tip angle adjustment handle (61), a first connecting rod group (62), a second slider (63), and a first arc track (13); the second slider (63) is disposed on the first arc track (13); The needle tip angle adjustment handle (61) passes through the bracket (4) and is connected to one end of the first connecting rod group (62); The other end of the first connecting rod assembly (62) is connected to the second slider (63); The first connecting rod assembly (62) includes: a U-shaped connecting rod (62a) and a rocker arm (62b); one end of the U-shaped connecting rod (62a) is connected to the second slider (63), and the other end is connected to the needle tip angle adjustment handle (61) through the rocker arm (62b); The U-shaped connecting rod (62a) includes four connecting rods; the four connecting rods are rotatably connected to each other.

2. The ascites collection device according to claim 1, characterized in that, It also includes a second arc track (14); the second arc track (14) is set at the same center as the first arc track (13).

3. The ascites collection device according to claim 2, characterized in that, It also includes a second connecting rod group (64); one end of the second connecting rod group (64) is connected to the first connecting rod group (62), and the other end is connected to the bracket (4) through a connecting shaft (65).

4. The ascites collection device according to claim 3, characterized in that, The needle sliding positioning mechanism (5) includes: a needle positioning handle (51) and a first slider (52). The first slider (52) has a square structure with a through hole in the center; The first slider (52) is disposed on the fixed base (2); The needle positioning handle (51) is fixedly connected to the bracket (4) through the through hole.

5. The ascites collection device according to claim 1, characterized in that, The fixed base (2) is a height-adjustable structure.

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