An endometrial sampler

Abstract

This utility model relates to medical devices, specifically an endometrial sampler, comprising a hollow cannula and sampling forceps that can extend into the cannula's lumen. Each clamping arm of the sampling forceps has a sampling spoon at one end extending into the cannula's lumen. The two sampling spoons open or close with the clamping arms, and are extended or retracted into the cannula by the sampling forceps moving along the cannula's axial direction. This utility model's sampling device combines sampling forceps and sampling spoons. On the one hand, the sampling spoons are less likely to damage the endometrium during sampling; on the other hand, after sampling, the sampling forceps can close the two sampling spoons and retract them into the cannula, preventing sample loss and avoiding bacterial contamination of the sample from the cervix and vagina.

Description

Technical Field

[0001] This utility model relates to medical devices, specifically an endometrial sampler. Background Technology

[0002] Currently, endometrial cell sampling for testing often uses an endometrial sampler. Existing samplers involve inserting the sampling end of the sampler into the endometrial tissue through the vagina, rotating the sampling end to collect the sample, and then pulling the sampler out of the vagina to complete the sampling. Samples obtained in this way are easily contaminated by bacteria from the cervix and vagina, affecting the accuracy of the testing. Utility Model Content

[0003] To address the aforementioned technical problems, this invention provides an endometrial sampler that is less susceptible to contamination by bacteria from the cervical canal and vagina.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an endometrial sampler, including a hollow cannula and a sampling forceps that can extend into the inner cavity of the cannula. Each clamping arm of the sampling forceps is provided with a sampling spoon at one end that extends into the inner cavity of the cannula. The two sampling spoons open or close with the two clamping arms. The two sampling spoons extend out or retract into the cannula by moving along the axial direction of the cannula through the sampling forceps. The other end of each clamping arm that extends out of the inner cavity of the cannula is connected to the cannula through a limiting device.

[0005] Preferably, the limiting device includes two guide rods fixedly connected to the end face of the sleeve and symmetrically arranged, and a limiting block radially arranged at the other end of each clamping arm. Each limiting block has a radially formed strip-shaped through hole, and each guide rod passes through the corresponding strip-shaped through hole. The strip-shaped through hole can move radially and / or axially along the corresponding guide rod.

[0006] Preferably, the peripheral wall of each of the strip-shaped through holes is closed.

[0007] Preferably, each guide rod has a stop block at one end through the strip-shaped through hole to prevent it from sliding out of the through hole.

[0008] Preferably, a spring is fitted at the other end of each guide rod, with one end of the spring fixedly connected to the end face of the sleeve and the other end being a free end.

[0009] Preferably, the limiting device includes a fixed rod disposed at the other end of each clamping arm and an elastic line connected at one end to the fixed rod, the other end of which is connected to the sleeve.

[0010] Preferably, the inner cavity of the cannula is provided with several elastic anti-slip balls to prevent the sampling forceps from sliding radially.

[0011] Preferably, each clamping arm has a handle at the other end extending out of the sleeve cavity.

[0012] Ideally, the two sampling spoons should be clamped together when they are brought together.

[0013] As can be seen from the above technical solution, the sampling device of this utility model adopts a combination of sampling forceps and sampling spoon. On the one hand, the sampling spoon is less likely to damage the endometrium during sampling. On the other hand, after sampling, the two sampling spoons can be closed by the sampling forceps and retracted into the cannula, which can not only prevent the sample from falling out, but also avoid bacterial contamination of the sample by the cervical canal and vagina. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0015] Figure 2 This is the structural intent of another preferred embodiment of the present invention. Detailed Implementation

[0016] The following is combined with Figure 1 and Figure 2 Detailed introduction of this utility model: This invention provides an endometrial sampler, comprising a hollow cannula 1 and sampling forceps 2 that extend into the cannula. Each clamping arm 21 of the sampling forceps has a sampling spoon 3 at one end extending into the cannula. The two sampling spoons open or close with the two clamping arms, and the sampling spoons are fixedly connected to the corresponding clamping arms, such as by welding or integral molding. The two sampling spoons extend or retract into the cannula by moving the sampling forceps along the axial direction of the cannula. In use, the sampling spoons can be retracted into the cannula first, then the cannula is passed through the vagina to the vicinity of the endometrium. Then, the sampling forceps are pushed along the axial direction of the cannula to make the two sampling spoons extend out of the cannula and open to the endometrial sampling site. Sampling is then performed through the open sampling spoons. After sampling, the two sampling spoons are closed with sampling forceps to cover the sample and prevent it from falling out. Then, the sampling forceps are pulled to retract the closed sampling spoons into the inner lumen of the cannula. Finally, the cannula and sampling forceps are withdrawn from the vagina to complete the sampling. This avoids bacterial contamination of the sample from the cervical canal and vagina, improving the sampling and testing efficiency.

[0017] During implementation, each clamp arm has a handle 22 at the other end extending from the inner cavity of the cannula, facilitating the operator's operation of the sampling forceps. The other end of each clamp arm is connected to the cannula via a limiting device 4 to ensure the relative stability of the cannula and sampling forceps during sampling. Specifically, the limiting device 4 includes two guide rods 41 fixedly connected to the end face of the cannula and symmetrically arranged, and a limiting block 42 radially arranged at the other end of each clamp arm. Each limiting block has a radially formed strip-shaped through hole 43, through which each guide rod passes. The strip-shaped through hole can move axially along the corresponding guide rod to ensure that the sampling forceps move axially along the cannula, enabling the extension and retraction of the sampling spoon. The strip-shaped through hole can also move radially along the corresponding guide rod to ensure that the sampling forceps open or close the sampling spoon.

[0018] Each of the strip-shaped through holes in this invention has a closed peripheral wall, thereby confining the sampling forceps within a certain radial range and preventing circumferential rotation. During implementation, the end of the guide rod passing through the strip-shaped through hole can be unrestrained, allowing the guide rod to axially disengage from the through hole. This enables a separate design for the sleeve and sampling forceps, allowing the sampling forceps to be used independently after being pulled out of the sleeve. When the sampling forceps need to be used with the sleeve, simply axially align the strip-shaped through hole with the guide rod and then move it axially; the connection is convenient and quick. Furthermore, one sleeve can be used with different models of sampling forceps, greatly improving adaptability.

[0019] As a preferred method, such as Figure 1 Each guide rod has a stop block 44 at one end that passes through the strip-shaped through hole to prevent it from slipping out of the through hole, thus confining the sampling clamp within a certain axial range. This ensures that the sampling clamp and the sleeve form a whole, facilitating use and operation.

[0020] As another preferred method, such as Figure 2 The limiting device 4 includes a fixed rod 46 disposed at the other end of each clamping arm and an elastic wire 47 connected at one end to the fixed rod, the other end of which is connected to the sleeve. The elasticity of the elastic wire can adapt to the radial and axial movements of the sampling forceps during sampling without affecting the operation. During implementation, the elastic wire is tied or bonded to the fixed rod and the sleeve for easy connection and disassembly; the elastic wire can also be glued to the fixed rod and the sleeve by heat pressing for a more secure connection.

[0021] In a preferred embodiment, a spring 45 is fitted onto the other end of each guide rod. One end of the spring is fixedly connected to the end face of the sleeve, while the other end is free, thereby preventing direct radial contact between the sampling forceps and the sleeve and avoiding collisions. Preferably, the inner cavity of the sleeve is provided with several elastic anti-slip balls 5 to prevent radial sliding of the sampling forceps. Because the anti-slip balls have elastic tension, they have minimal interference with the opening and closing of the sampling forceps. Preferably, when the two sampling spoons are closed, their spoon heads are clamped, preventing the sample from falling out.

[0022] The above embodiments are for illustrative purposes only and are not intended to limit the present invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also fall within the scope of the present invention.

Claims

1. An endometrial sampler comprising a cannula which is hollow and a sampling forceps which is extendable into the interior of the cannula, characterized in that: Each of the sampling forceps has a sampling spoon at one end that extends into the inner cavity of the sleeve. The two sampling spoons open or close with the two clamping arms. The two sampling spoons extend out or retract into the sleeve by moving the sampling forceps along the axial direction of the sleeve. The other end of each clamping arm that extends out of the inner cavity of the sleeve is connected to the sleeve by a limiting device.

2. The endometrial sampler of claim 1, wherein: The limiting device includes two guide rods fixedly connected to the end face of the sleeve and symmetrically arranged, and a limiting block radially arranged at the other end of each clamping arm. Each limiting block has a radially formed strip-shaped through hole, and each guide rod passes through the corresponding strip-shaped through hole. The strip-shaped through hole can move radially and / or axially along the corresponding guide rod.

3. The endometrial sampler of claim 2, wherein: The peripheral wall of each of the described strip-shaped through holes is closed.

4. The endometrial sampler of claim 3, wherein: Each guide rod has a stop block at one end that passes through the strip-shaped through hole to prevent it from sliding out of the through hole.

5. The endometrial sampler of any one of claims 2 to 4, wherein: Each guide rod has a spring fitted at the other end, with one end of the spring fixedly connected to the end face of the sleeve and the other end being a free end.

6. The endometrial sampler of claim 1, wherein: The limiting device includes a fixed rod disposed at the other end of each clamping arm and an elastic line connected to the fixed rod at one end, the other end of which is connected to the sleeve.

7. The endometrial sampler of claim 1, wherein: The inner cavity of the cannula is provided with several elastic anti-slip balls to prevent the sampling forceps from sliding radially.

8. The endometrial sampler of claim 1, wherein: Each clamping arm has a handle at the other end extending out of the sleeve cavity.

9. The endometrial sampler of claim 1, wherein: When the two sampling spoons are brought together, their heads are clamped together.

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