Umbrella opening type pleura biopsy device

Abstract

The utility model discloses an umbrella opening type pleura biopsy device, which relates to the field of pleura tissue biopsy, and comprises an inner sleeve, an annular groove, a needle cylinder groove and a hook-shaped groove which are distributed in the inner sleeve from top to bottom, and a push rod which is assembled in the inner sleeve in a sliding manner, through the designed limiting unit, fastening unit and sampling unit, in the process of obtaining a pleural tissue sample, the limiting unit is used for limiting the push rod and controlling the push rod to slide in the puncture needle, so that the sampling is more convenient; meanwhile, the to-be-sampled part and the biopsy device are stabilized under the action of the fastening unit, so that the instrument is prevented from shaking in the sampling process; and finally, under the action of the sampling unit, umbrella-shaped sampling can be performed on the sample, so that the condition that the sampling is incomplete or the sample is not taken is avoided, and great clinical significance is achieved.

Description

Technical Field

[0001] The utility model relates to the field of pleural tissue biopsy, in particular to an open umbrella type pleural biopsy device. Background Art

[0002] Pleural biopsy is a medical procedure used to obtain pleural tissue samples for pathological examination. Pleural tissue can be obtained through the following methods: 1. Thoracoscopic surgery: Thoracoscopic surgery is a minimally invasive surgical technique; 2. Puncture biopsy: This method is relatively simple, but may have certain risks and limitations; 3. Percutaneous pleural biopsy: This method is suitable for some patients who cannot undergo thoracoscopic surgery; 4. Surgical resection: This method is usually suitable for pleural tumors or other cases that require a comprehensive examination.

[0003] The existing Chinese public document (CN204581349U) records a C-shaped pleural biopsy needle, which includes a needle core and an outer sleeve rotatably mounted on the outer surface of the needle core. The outer sleeve and the needle core adopt an adaptive C-shaped structure, and the front end thereof can move toward the parietal pleura over a large range, thereby expanding the biopsy range of the parietal pleura, increasing the curvature of the C-shaped outer sleeve and the compliance of the needle core to move in the C-shaped outer sleeve, making it possible to perform biopsy of the parietal pleura in different parts of the thoracic cavity. The needle tip is spindle-shaped and its front end is triangular-pyramid-shaped, making the needle tip short, firm and sharp. However, in many cases, the C-shaped pleural biopsy needle has certain limitations when obtaining pleural tissue samples, and it needs to be hooked back and forth multiple times to achieve the purpose. Utility Model Content

[0004] The purpose of the utility model is to provide an umbrella-type pleural biopsy device, which can solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model provides the following technical solutions: an open umbrella pleural biopsy device, comprising: an inner sleeve, the interior of which is distributed from top to bottom with an annular groove, a syringe groove and a hook-shaped groove, and a push rod slidably assembled inside the inner sleeve.

[0006] It also includes: a sampling unit for obtaining pleural tissue, wherein the sampling unit is located at the bottom of the push rod;

[0007] A limiting unit, used for limiting the push rod, wherein the limiting unit is located between the inner sleeve and the push rod;

[0008] The fastening unit is used to limit the length of the inner sleeve entering the patient's chest cavity, and the fastening unit is slidably assembled on the outer surface of the inner sleeve.

[0009] Preferably, the bottom of the inner sleeve is in a conical blunt-end shape.

[0010] Preferably, the annular groove is distributed between the top and the middle part of the inner sleeve, the number of the syringe grooves is several and is equidistantly distributed around the circumference, the upper port of the syringe groove is communicated with the annular groove, and the hook-shaped groove is distributed at the lower port of each syringe groove, one end of the hook-shaped groove away from the syringe groove meanders obliquely upward to the outer surface of the inner sleeve, the hook-shaped groove is communicated with the syringe groove, and the hook-shaped groove and the syringe groove are overall shaped like a fish hook, and the outer surface of the inner sleeve is fixedly covered with a hand grip ring.

[0011] Preferably, the sampling unit includes a disc fixedly mounted on the bottom of the push rod, the disc is slidably assembled with the annular groove, a needle rod is slidably arranged inside each syringe groove, the upper end of each needle rod is fixedly connected to the disc via a needle tail, and a needle head is fixedly mounted on the bottom of each needle rod.

[0012] Preferably, the needle rod is made of a rigid material with flexibility.

[0013] Preferably, a sampling groove is provided on the outer surface of the needle.

[0014] Preferably, the limiting unit includes a limiting groove provided on the outer surface of the upper end of the inner sleeve, the limiting groove is radially distributed and communicated with the annular groove, a hemispherical pin is slidably mounted in the limiting groove, a tension spring is fixedly mounted between the hemispherical pin and the outer surface of the inner sleeve, an annular baffle is also fixedly mounted on the outer surface of the push rod, the annular baffle is slidably mounted in the annular groove, and the hemispherical pin serves to limit the annular baffle.

[0015] Preferably, the fastening unit includes an outer sleeve slidably mounted on the outer surface of the inner sleeve, a stabilizing plate is fixedly mounted on the bottom outer surface of the outer sleeve, a bolt slot is provided on the outer surface of the outer sleeve, a butterfly bolt is rotatably mounted in the bolt slot, the axis of the butterfly bolt is perpendicular to the axis of the outer sleeve, and the butterfly bolt abuts against the inner sleeve.

[0016] Preferably, the outer sleeve is made of a rigid material.

[0017] Preferably, the stabilizing sheet is made of silicone.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] The utility model adopts the designed limiting unit, fastening unit and sampling unit, and can use the limiting unit to limit the push rod and control its sliding inside the puncture needle during the process of obtaining pleural tissue samples, so that sampling is more convenient; at the same time, under the action of the fastening unit, the sampling site and the biopsy device are stabilized to avoid the shaking of the instrument during the sampling process; finally, under the action of the sampling unit, the sample can be collected in an umbrella shape, avoiding the situation of incomplete sampling or failure to obtain the sample, which has great clinical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 For this utility model Figure 2 Enlarged view of point B in the middle;

[0024] Figure 5 This is a schematic diagram of the annular groove and syringe groove structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the needle tail and disc structure of the utility model;

[0026] Figure 7 This is a schematic diagram of the needle and sampling slot structure of the utility model;

[0027] Figure 8 This is a schematic diagram of the hemispherical latch and annular baffle structure of the utility model.

[0028] In the figure: 1. outer sleeve; 2. inner sleeve; 3. push rod; 4. stabilizer; 5. butterfly bolt; 6. hand grip ring; 7. hemispherical latch; 8. tension spring; 9. needle; 10. needle rod; 11. needle tail; 12. hook groove; 13. syringe groove; 14. annular groove; 15. disc; 16. annular baffle; 17. sampling groove. 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0030] Example 1: Please refer to Figure 1-Figure 7 The figure shows an open umbrella type pleural biopsy device, comprising: an inner sleeve 2, the inner sleeve 2 has an annular groove 14, a syringe groove 13 and a hook groove 12 distributed from top to bottom, and a push rod 3 slidably assembled inside the inner sleeve 2.

[0031] It also includes: a sampling unit for obtaining pleural tissue, the sampling unit is located at the bottom of the push rod 3; a limiting unit for limiting the push rod 3, the limiting unit is located between the inner sleeve 2 and the push rod 3; a fastening unit for limiting the length of the inner sleeve 2 entering the patient's chest cavity, the fastening unit is slidably assembled on the outer surface of the inner sleeve 2.

[0032] The bottom of the inner cannula 2 is in the shape of a conical blunt head. When the inner cannula 2 is pushed downward to squeeze the pleural tissue, the inner cannula 2 with a conical blunt bottom is beneficial to reducing trauma to the pleural tissue and also can reduce blood overflow. The blunt needle tip can better compress the blood vessels and reduce the amount of bleeding in the patient's chest cavity after puncture.

[0033] The annular groove 14 is distributed between the top and the middle part of the inner sleeve 2. There are several syringe grooves 13, which are evenly distributed around the circumference. The upper end of the syringe groove 13 is connected to the annular groove 14, and the hook-shaped groove 12 is distributed at the lower end of each syringe groove 13. The end of the hook-shaped groove 12 away from the syringe groove 13 meanders obliquely upward to the outer surface of the inner sleeve 2. The hook-shaped groove 12 is connected to the syringe groove 13, and the hook-shaped groove 12 and the syringe groove 13 are overall in the shape of a fishhook. A hand grip ring 6 is fixedly mounted on the outer surface of the inner sleeve 2.

[0034] The sampling unit includes a disc 15 fixedly mounted at the bottom of the push rod 3, the disc 15 is slidably assembled with the annular groove 14, a needle rod 10 is slidably arranged inside each syringe groove 13, the upper end of each needle rod 10 is fixedly connected to the disc 15 through a needle tail 11, and a needle head 9 is fixedly mounted at the bottom of each needle rod 10.

[0035] Through the connection between the push rod 3 and the entire puncture needle, after the push rod 3 is pushed, the multiple needles 9 extend outward from the hook-shaped groove 12 in an umbrella shape, thereby avoiding the occurrence of incomplete sampling or failure to obtain a sample.

[0036] The needle rod 10 is made of a rigid material with flexibility. It is soft and bendable to a certain extent, while maintaining a certain rigidity, so that the needle rod 10 can bend or deform to a certain extent under the action of external force without completely losing its rigidity, which is conducive to the needle rod 10 pushing the needle 9 to extend out of the hook-shaped groove 12 to meet the needs of obtaining pleural tissue.

[0037] A sampling groove 17 is provided on the outer surface of the needle 9. After the needle 9 enters the pleural tissue to be sampled, when the push rod 3 is pulled to retract the puncture needle, the sampling groove 17 can cut part of the pleural tissue and store it therein to ensure that it will not fall off. The edge of the sampling groove 17 near the tip of the needle 9 is a sharp blade.

[0038] Working principle:

[0039] The doctor holds the grip ring 6 tightly with his hand to ensure that the sampler will not shake during sampling. Then, the doctor releases the limit of the push rod 3 by the limit unit, and then pushes the push rod 3 downward. As the push rod 3 moves, the needle tail 11 and the needle rod 10 move downward inside the syringe groove 13. The needle head 9 is pushed by the needle rod 10 in the hook-shaped groove 12, and multiple needle heads 9 extend outward in an umbrella shape, thereby sampling the patient's pleural tissue. The extended umbrella-shaped needle head 9 is used for sampling, which effectively avoids the situation where the sampling is incomplete or the sample is not obtained.

[0040] During sampling, the sharp part around the sampling groove 17 cuts off the pleural tissue to be sampled, thereby preventing the needle 9 from being unable to complete the operation of collecting the sample. At the same time, the sampling groove 17 opened on the needle 9 stores the pleural tissue. After the sampling is completed, the doctor pulls the push rod 3 back upward, so that the overall umbrella-shaped needle 9 is recovered into the hook-shaped groove 12.

[0041] Example 2: Please refer to Figure 2 , Figure 6 , Figure 8 This embodiment is a further explanation of the first embodiment. In the figure, an open umbrella type pleural biopsy device is shown. The limiting unit includes a limiting groove provided on the outer surface of the upper end of the inner sleeve 2. The limiting groove is radially distributed and communicates with the annular groove 14. A hemispherical pin 7 is slidably mounted in the limiting groove. A tension spring 8 is fixedly mounted between the hemispherical pin 7 and the outer surface of the inner sleeve 2. An annular baffle 16 is also fixedly mounted on the outer surface of the push rod 3. The annular baffle 16 is slidably mounted with the annular groove 14, and the hemispherical pin 7 has a limiting effect on the annular baffle 16.

[0042] The use of the hemispherical latch 7 and the tension spring 8 in the limiting unit limits the sliding of the push rod 3, which is beneficial to controlling the sampling and recovery of the puncture needle.

[0043] In this embodiment: after the doctor holds the push rod 3 with one hand and the hand grip ring 6 with the other hand, he pulls the hemispherical pin 7 at the same time to release the limit of the push rod 3 by the limit unit, so that the push rod 3 can slide inside the annular groove 14. After the patient's pleural tissue sampling is completed, the doctor pulls back the push rod 3. When the annular baffle 16 on the outer surface of the push rod 3 is about to reach the limit groove, the doctor pulls the hemispherical pin 7 again to make the push rod 3 pass the limit groove, and then releases the hemispherical pin 7 to limit the push rod 3 again. The method of limiting the push rod 3 and controlling its sliding inside the puncture needle makes sampling more convenient. At the same time, the use of the hemispherical pin 7 is conducive to protecting the needle 9 of the biopsy device when the biopsy device is not in use.

[0044] Example 3: Please refer to Figure 1 , Figure 2 The present embodiment is a further explanation of the above-mentioned embodiment. In the figure, an open umbrella type pleural biopsy device is shown. The fastening unit includes an outer sleeve 1 which is slidably mounted on the outer surface of an inner sleeve 2. A stabilizing sheet 4 is fixedly mounted on the bottom outer surface of the outer sleeve 1. A bolt slot is provided on the outer surface of the outer sleeve 1. A butterfly bolt 5 is rotatably mounted in the bolt slot. The axis of the butterfly bolt 5 is perpendicular to the axis of the outer sleeve 1, and the butterfly bolt 5 is against the inner sleeve 2.

[0045] The fastening unit can be used to enhance the stability of the sampler during sampling, thereby avoiding unnecessary harm to the patient caused by the shaking of the sampler.

[0046] The outer sleeve 1 is made of a rigid material, which is beneficial to the stability of the inner sleeve 2 during sampling, so that the inner sleeve 2 can slide on the surface of the outer sleeve 1.

[0047] The stabilizing sheet 4 is made of silicone material. When sampling, the stabilizing sheet 4 is in close contact with the sampling site, which can stabilize the biopsy device when sampling the patient's pleura. The stabilizing sheet 4 made of silicone material has a certain deformation ability. The patient's chest cavity is not completely flat. After the stabilizing sheet 4 made of silicone material comes into contact with the chest cavity, the stabilizing sheet 4 is deformed, which can ensure that the stabilizing sheet 4 is in close contact with the patient's chest cavity, thereby avoiding the shaking of the sampler during sampling.

[0048] In this embodiment: before the doctor takes a sample, he first slides the outer sleeve 1 so that the stabilizing plate 4 fits tightly against the patient's pleural area, then pushes the push rod 3 downward to a specified depth, rotates the butterfly bolt 5 located inside the bolt slot, so that the butterfly bolt 5 and the inner sleeve 2 abut against each other, tightens the outer sleeve 1 and the inner sleeve 2, and finally performs puncture to obtain the patient's pleural tissue. During the puncture process, the outer sleeve 1 stabilizes the entire biopsy device, and the stability of the biopsy device is increased through the action of the stabilizing plate 4.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include"-"comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process-method-article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process-method-article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An open umbrella type pleural biopsy device, characterized in that: include: An inner sleeve (2), wherein the inner sleeve (2) has an annular groove (14), a syringe groove (13) and a hook-shaped groove (12) distributed from top to bottom, and a push rod (3) slidably assembled inside the inner sleeve (2); Also includes: A sampling unit, used for obtaining pleural tissue, the sampling unit being located at the bottom of the push rod (3); A limiting unit, used to limit the push rod (3), the limiting unit being located between the inner sleeve (2) and the push rod (3); The fastening unit is used to limit the length of the inner sleeve (2) entering the patient's chest cavity, and the fastening unit is slidably mounted on the outer surface of the inner sleeve (2).

2. The umbrella-type pleural biopsy device according to claim 1, characterized in that: The bottom of the inner sleeve (2) is in the shape of a blunt conical head.

3. The umbrella-type pleural biopsy device according to claim 1, characterized in that: The annular groove (14) is distributed between the top and the middle part of the inner sleeve (2); the number of the syringe grooves (13) is several and they are equidistantly distributed around the circumference; the upper end of the syringe groove (13) is communicated with the annular groove (14); and the hook-shaped groove (12) is distributed at the lower end of each syringe groove (13); one end of the hook-shaped groove (12) away from the syringe groove (13) meanders obliquely upward to the outer surface of the inner sleeve (2); the hook-shaped groove (12) is communicated with the syringe groove (13); and the hook-shaped groove (12) and the syringe groove (13) are overall in the shape of a fishhook; and a hand grip ring (6) is fixedly sleeved on the outer surface of the inner sleeve (2).

4. The umbrella-type pleural biopsy device according to claim 3, characterized in that: The sampling unit comprises a disk (15) fixedly mounted on the bottom of the push rod (3), the disk (15) being slidably mounted on the annular groove (14), a needle rod (10) being slidably disposed inside each syringe groove (13), the upper end of each needle rod (10) being fixedly connected to the disk (15) via a needle tail (11), and a needle head (9) being fixedly mounted on the bottom of each needle rod (10).

5. The umbrella-type pleural biopsy device according to claim 4, characterized in that: The needle rod (10) is made of a rigid material with flexibility.

6. The umbrella-type pleural biopsy device according to claim 4, characterized in that: The outer surface of the needle (9) is provided with a sampling groove (17).

7. The umbrella-type pleural biopsy device according to claim 1, characterized in that: The limiting unit comprises a limiting groove formed on the outer surface of the upper end of the inner sleeve (2), the limiting groove being radially distributed and communicating with the annular groove (14), a hemispherical pin (7) being slidably mounted in the limiting groove, a tension spring (8) being fixedly mounted between the hemispherical pin (7) and the outer surface of the inner sleeve (2), an annular baffle (16) being fixedly mounted on the outer surface of the push rod (3), the annular baffle (16) being slidably mounted in the annular groove (14), and the hemispherical pin (7) having a limiting effect on the annular baffle (16).

8. The umbrella-type pleural biopsy device according to claim 1, characterized in that: The fastening unit comprises an outer sleeve (1) which is slidably mounted on the outer surface of the inner sleeve (2); a stabilizing plate (4) is fixedly mounted on the bottom outer surface of the outer sleeve (1); a bolt slot is provided on the outer surface of the outer sleeve (1); a butterfly bolt (5) is rotatably mounted in the bolt slot; the axis of the butterfly bolt (5) is perpendicular to the axis of the outer sleeve (1); and the butterfly bolt (5) abuts against the inner sleeve (2).

9. The umbrella-type pleural biopsy device according to claim 8, characterized in that: The outer sleeve (1) is made of a rigid material.

10. The umbrella-type pleural biopsy device according to claim 8, characterized in that: The stabilizing sheet (4) is made of silicone.

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