Uterine endometrium suction sampling device

Abstract

The utility model discloses an endometrial suction sampling device, which relates to the technical field of medical instruments and comprises a device main body, a first pull rod and a second pull rod respectively penetrate through the top of the device main body, two sides of the first pull rod are connected with guide strips, and the bottom of the second pull rod is connected with a piston head. Through the arrangement of the first pull rod, the second pull rod, the piston head, the sealing ring and the guide strip, the sampling brush and the piston head are respectively controlled by the first pull rod and the second pull rod, so that the piston head can be conveniently reset after displacement in the transportation and carrying process, and the position of the piston head can be conveniently and flexibly operated; handles on the first pull rod and the second pull rod are always in a vertical state, the situation that the handles on the tops of the first pull rod and the second pull rod are attached together to affect subsequent operation after the first pull rod or the second pull rod rotates is avoided, and meanwhile tissue is prevented from leaking out of a gap between a piston head and a guide strip through arrangement of a sealing ring; the structure is simple and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a uterine cavity endometrium extraction and sampling device. Background Art

[0002] The endometrial sampler is a medical device commonly used in obstetrics and gynecology, assisted reproduction and contraceptive devices. It is used to obtain endometrial tissue samples for pathological examination, such as endometriosis, endometrial hyperplasia, endometrial cancer, endometriosis, endometrial adenomyosis and other symptoms. It can also be used for the selection of assisted reproductive technology and contraceptive measures. Its main features are non-traumatic, simple, easy, efficient and accurate.

[0003] The disposable endometrial sampler with application number 202220428467.6 includes an outer shell and a solid rod core, the inner shell is lined with a hollow conical piston; both ends of the outer shell are open, and a notch is opened on the side wall of the extended end (front end) on one side; the solid rod core is made of iron and plastic, and the rod core is successively attached with a brush, a cylindrical bulge, and a pull-out head, and the solid rod core can freely pass through the hollow conical piston. In the complete device, it can be seen that the brush part of the rod core is close to the notch on the front end of the outer shell, but is not exposed; when the rod core moves forward relatively, the brush can be completely exposed to the uterine cavity to brush the endometrial tissue, and when the rod core moves backward relatively, when its cylindrical bulge reaches the hollow conical piston, it can drive the piston to move backward to form a relatively closed negative pressure, and further negative pressure absorption of the endometrial tissue is performed. This greatly improves the effectiveness of the disposable endometrial sampler for sample collection.

[0004] This technical solution uses a sampling brush to first brush the tissue off the endometrium of the uterine cavity, and then retracts the sampling brush to make it contact with the piston, driving the retraction of the piston. After the piston is retracted, negative pressure is generated to suck the brushed tissue into the device for temporary storage. However, the movement of the piston depends on the retraction of the sampling brush, and the piston is only limited to the inner wall of the device by friction. During transportation, handling and use, if it encounters external forces such as bumps and vibrations, the piston is easily displaced. The staff is required to check the piston before inserting it into the patient's body and push the piston with a slender tool to ensure that the piston is at the lowest point to avoid affecting the retraction effect. Utility Model Content

[0005] Based on this, the purpose of the present invention is to provide a device for aspirating and sampling the endometrium of the uterine cavity to solve the technical problems mentioned in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for aspiration and sampling of the endometrium of the uterine cavity, comprising a device body, a first pull rod and a second pull rod respectively passing through the top of the device body, and guide strips are connected to both sides of the first pull rod, a piston head is connected to the bottom of the second pull rod, and a sealing ring is connected inside the piston head.

[0007] By adopting the above technical scheme, the sampling brush and the piston head are controlled respectively by the first pull rod and the second pull rod, which is convenient for resetting the piston head after displacement in the transportation and handling diagram, and is also convenient for flexible operation of the position of the piston head. At the same time, due to the setting of the guide bar, the handles on the first pull rod and the second pull rod are always in a vertical state, avoiding the handles on the top of the first pull rod or the second pull rod from fitting together after the rotation of the two handles, affecting subsequent operations. At the same time, the sealing ring is set to avoid leakage of tissue from the gap between the piston head and the guide bar.

[0008] Furthermore, the guide bar is slidably connected to the sealing ring, and two guide bars are provided.

[0009] By adopting the above technical solution, due to the setting of the guide bar, the handles on the first pull rod and the second pull rod are always in a vertical state, avoiding the handles on the top of the first pull rod or the second pull rod being pressed together after the rotation of the first pull rod or the second pull rod, affecting subsequent operations.

[0010] Furthermore, the piston head and the second pull rod are both slidably connected to the device body, and the second pull rod abuts against the first pull rod.

[0011] By adopting the above technical solution, the staff pulls the second pull rod to displace the piston head to generate negative pressure to suck the tissue under the brush into the device body. At the same time, the second pull rod resists the first pull rod to drive the first pull rod to displace, so that the sampling brush is retracted into the device body.

[0012] Furthermore, the tops of the first pull rod and the second pull rod are both connected with handles, and the handle on the first pull rod and the handle on the second pull rod are vertically distributed.

[0013] By adopting the above technical solution, the first pull rod and the second pull rod can be easily operated by the staff through the handles on the first pull rod and the second pull rod.

[0014] Furthermore, two second pull rods are provided, and the two second pull rods are arranged in a mirror image.

[0015] By adopting the above technical solution, the sampling brush and the piston head are controlled respectively by the first pull rod and the second pull rod, which is convenient for resetting the piston head after displacement during transportation and handling, and is also convenient for flexibly operating the position of the piston head.

[0016] Furthermore, an air bag is sleeved on the outside of the device body, and an air supply tube is connected to one side of the air bag, and a negative pressure ball is connected to the top of the air supply tube.

[0017] By adopting the above technical solution, the operator presses the negative pressure ball back and forth multiple times to inflate the airbag. After the airbag is inflated, it expands and contacts the patient's body to form a seal, preventing outside air and impurities from entering when the sample is subsequently sucked out.

[0018] Furthermore, the airbag and the air delivery pipe are both made of silicone rubber material.

[0019] By adopting the above technical solution, silicone rubber has better safety, stable properties and is not easy to decompose, and will not participate in metabolism. Therefore, the air pipe and airbag made of silicone rubber will not cause too much negative impact on the human body even if they come into contact with the human body.

[0020] Furthermore, a sampling brush is connected to the bottom end of the first pull rod, and the sampling brush is slidably connected to the device body.

[0021] By adopting the above technical solution, the sampling brush and the piston head are controlled respectively by the first pull rod and the second pull rod, which is convenient for flexible operation. The staff rotates the device body, the first pull rod or the second pull rod to rotate the sampling brush to brush off the tissue on the endometrium of the uterine cavity.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] The utility model arranges the first pull rod, the second pull rod, the piston head, the sealing ring and the guide strip, and controls the sampling brush and the piston head respectively through the first pull rod and the second pull rod, so as to facilitate the resetting of the piston head after displacement in the transportation and handling diagram, and also facilitate the flexible operation of the position of the piston head. At the same time, due to the arrangement of the guide strip, the handles on the first pull rod and the second pull rod are always in a vertical state, so as to avoid the handles on the top of the first pull rod or the second pull rod being fitted together after the rotation of the two pull rods, affecting subsequent operations. At the same time, the arrangement of the sealing ring avoids the leakage of tissue from the gap between the piston head and the guide strip; the structure is simple and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the explosion structure of the first pull rod of the utility model;

[0027] Figure 4 For the utility model Figure 3 A magnified view of the structure in Figure 2.

[0028] In the figure: 1. device body; 2. first pull rod; 3. second pull rod; 4. sampling brush; 5. air bag; 6. air pipe; 7. negative pressure ball; 8. piston head; 9. sealing ring; 10. guide strip. DETAILED DESCRIPTION

[0029] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0030] The following describes an embodiment of the utility model based on its overall structure.

[0031] Embodiment 1:

[0032] A uterine cavity endometrial aspiration sampling device, such as Figure 1-Figure 4 As shown, it includes a device body 1, and the top of the device body 1 is respectively penetrated by a first pull rod 2 and a second pull rod 3, two second pull rods 3 are provided, and the two second pull rods 3 are mirror-imaged, and both sides of the first pull rod 2 are connected with guide bars 10, and two guide bars 10 are provided, so that the handles on the first pull rod 2 and the second pull rod 3 are always in a vertical state, so as to avoid the handles on the top of the first pull rod 2 or the second pull rod 3 being attached together after the rotation of the first pull rod 2 or the second pull rod 3 to affect the subsequent operation, so that the handles on the first pull rod 2 and the second pull rod 3 are always in a vertical state; the bottom of the second pull rod 3 is connected with a piston head 8, and the piston head 8 and the second pull rod 3 are both slidably connected to the device body 1, and the second pull rod 3 is pulled to make the piston head 8 The displacement generates negative pressure to suck the brushed tissue into the device body 1; the first pull rod 2 and the second pull rod 3 are both connected to the top of a handle, and the handle on the first pull rod 2 and the handle on the second pull rod 3 are vertically distributed to avoid the handles on the top of the first pull rod 2 or the second pull rod 3 from fitting together after the first pull rod 2 or the second pull rod 3 is rotated to affect subsequent operations; the second pull rod 3 abuts against the first pull rod 2, and the staff pulls the second pull rod 3 to displace the piston head 8, and at the same time, the second pull rod 3 abuts against the first pull rod 2 to drive the first pull rod 2 to displace; a sealing ring 9 is connected to the inside of the piston head 8, and a guide strip 10 is slidably connected to the sealing ring 9. The setting of the sealing ring 9 prevents tissue from leaking from the gap between the piston head 8 and the guide strip 10.

[0033] See also Figure 1-Figure 4 In the above embodiment, a sampling brush 4 is connected to the bottom end of the first pull rod 2, and the staff rotates the device body 1, the first pull rod 2 or the second pull rod 3, so that the sampling brush 4 rotates to brush off the tissue on the endometrium of the uterine cavity; the sampling brush 4 is slidably connected to the device body 1, and the first pull rod 2 is displaced to retract the sampling brush 4 into the device body 1.

[0034] Embodiment 2:

[0035] Based on the above embodiment 1, refer to Figure 1 and Figure 2 An airbag 5 is sleeved on the outside of the device body 1, and an air supply pipe 6 is connected to one side of the airbag 5. A negative pressure ball 7 is connected to the top of the air supply pipe 6. The staff presses the negative pressure ball 7 back and forth several times to inflate the airbag 5. After the airbag 5 is inflated, it expands and contacts the patient's body to form a seal, preventing outside air and impurities from entering during subsequent sample extraction; the airbag 5 and the air supply pipe 6 are both made of silicone rubber material, which will not cause a significant negative impact on human tissue.

[0036] The implementation principle of the utility model is as follows: first, the staff pushes the first pull rod 2 and the second pull rod 3 to the bottom, and controls the sampling brush 4 and the piston head 8 respectively through the first pull rod 2 and the second pull rod 3, which is convenient for resetting the piston head 8 after displacement during transportation and handling, and is also convenient for flexibly operating the position of the piston head 8. Then the staff delivers the device into the patient's body, and then the staff rotates the device body 1, the first pull rod 2 or the second pull rod 3, so that the sampling brush 4 rotates to brush off the tissue on the endometrium of the uterine cavity. Due to the setting of the guide strip 10, the handles on the first pull rod 2 and the second pull rod 3 are always in a vertical state, so as to avoid the handles on the top of the first pull rod 2 or the second pull rod 3 being attached to each other after the rotation of the first pull rod 2 or the second pull rod 3, which affects the subsequent operation;

[0037] After the tissue is brushed off, the staff presses the negative pressure ball 7 back and forth several times to inflate the airbag 5. After the airbag 5 is inflated, it expands and contacts the patient's body to form a seal, preventing outside air and impurities from entering during subsequent sample extraction. Then the staff pulls the second pull rod 3 to displace the piston head 8 to generate negative pressure to suck the brushed tissue into the device body 1. At the same time, the second pull rod 3 is abutted against the first pull rod 2 to drive the first pull rod 2 to displace, so that the sampling brush 4 is retracted into the device body 1. At the same time, the sealing ring 9 is set to prevent the tissue from leaking out from the gap between the piston head 8 and the guide strip 10. After the sampling is completed, the staff opens the cap on the negative pressure ball 7 to allow the air in the airbag 5 to be released and shrunk. Then the staff can take the device body 1 out of the patient's body.

[0038] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A uterine endometrial aspiration sampling device, comprising a device body (1), characterized in that: A first pull rod (2) and a second pull rod (3) are respectively passed through the top of the device body (1), and guide strips (10) are connected to both sides of the first pull rod (2). The bottom of the second pull rod (3) is connected to a piston head (8), and a sealing ring (9) is connected inside the piston head (8).

2. The endometrial aspiration sampling device according to claim 1, characterized in that: The guide strip (10) is slidably connected to the sealing ring (9), and two guide strips (10) are provided.

3. The endometrial aspiration sampling device according to claim 2, characterized in that: The piston head (8) and the second pull rod (3) are both slidably connected to the device body (1), and the second pull rod (3) is in contact with the first pull rod (2).

4. The endometrial aspiration sampling device according to claim 3, characterized in that: The tops of the first pull rod (2) and the second pull rod (3) are both connected with handles, and the handle on the first pull rod (2) and the handle on the second pull rod (3) are vertically distributed.

5. The endometrial aspiration sampling device according to claim 4, characterized in that: Two second pull rods (3) are provided, and the two second pull rods (3) are arranged in a mirror image.

6. The endometrial aspiration sampling device according to claim 1, characterized in that: The device body (1) is externally sleeved with an air bag (5), one side of the air bag (5) is connected to an air delivery tube (6), and the top end of the air delivery tube (6) is connected to a negative pressure ball (7).

7. The endometrial aspiration sampling device according to claim 6, characterized in that: The air bag (5) and the air delivery pipe (6) are both made of silicone rubber material.

8. The endometrial aspiration sampling device according to claim 1, characterized in that: A sampling brush (4) is connected to the bottom end of the first pull rod (2), and the sampling brush (4) is slidably connected to the device body (1).

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