A bone sampler

Abstract

The application discloses a bone sampler for reducing sampling failure. The utility model discloses a outer tube handle, outer tube, inner tube and rotating block, the outer tube is fixed on the outer tube handle, is provided with recessed area on the outer tube handle, recessed area with outer tube intercommunication, the inner tube includes sampling end and rotating end, rotating end with located in recessed area rotating block is connected, sampling end is worn in the outer tube, is provided with cutting knife in sampling end, cutting knife extends to the axial direction of inner tube, thereby when the inner tube is from the outer tube and withdraws, cutting knife is stuck bone tissue sample.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to a bone sampler. Background Technology

[0002] A bone sampler is a medical device used in clinical medicine to collect bone tissue samples. It is used to collect small pieces of bone tissue samples from a patient's bones during diagnosis and treatment. It is commonly used in the diagnosis of diseases such as bone tumors, osteoporosis, and metabolic bone diseases.

[0003] Currently, the mainstream bone sampler mainly consists of three components: a puncture needle, an inner tube, and an outer tube. The end of the inner tube is equipped with a semi-enclosed structure with toothed structures. After the end of the inner tube is punctured into the bone, the bone tissue is cut by rotating the inner tube to obtain a bone tissue sample. Then the inner tube is withdrawn, and the bone tissue sample is taken out.

[0004] However, the inner wall of the bone sampler tube is smooth and lacks an effective bone sample fixation structure. When the inner tube is removed from the human body or the sample is transferred, the bone tissue sample is prone to slipping off the inner tube due to gravity or vibration, resulting in sampling failure. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a bone sampler that can reduce sampling failures.

[0006] This application provides a bone sampler, comprising: An outer tube handle, an outer tube, an inner tube, and a rotating block; the outer tube is fixed to the outer tube handle, and the outer tube handle has a recessed area that communicates with the outer tube; the inner tube includes a sampling end and a rotating end, the rotating end being connected to the rotating block located in the recessed area, the sampling end being inserted into the outer tube, and a cutting blade being provided inside the sampling end, the cutting blade extending towards the axis of the inner tube, so that when the inner tube is withdrawn from the outer tube, the cutting blade catches the bone tissue sample.

[0007] Optionally, the bone sampler further includes a puncture needle and a puncture handle. The puncture needle is connected to the puncture handle, passes through the rotating block, and is inserted into the inner tube. The puncture end of the puncture needle protrudes from the end of the outer tube.

[0008] Optionally, the puncture needle is provided with a groove facing the cutting blade, so that the cutting blade is embedded in the groove.

[0009] Optionally, the cutting blade and the inner tube are integrally formed.

[0010] Optionally, the rotating block is circular, and the side of the rotating block is provided with anti-slip texture.

[0011] Optionally, a limiting block is provided on the rotating block, a limiting plate is provided in the recessed area, a rotating groove is formed between the limiting plate and the bottom of the recessed area, a limiting groove is provided on the inner wall of the recessed area, the limiting groove is connected to the rotating groove, and the limiting block is controlled to move along the rotating groove.

[0012] Optionally, the rotating block is provided with a movable block, and the inner wall of the recessed area is provided with a notch, and the movable block is controlled to move towards the notch.

[0013] Optionally, the cutting blade is triangular in shape.

[0014] Optionally, distance scales are provided on the outer wall of the outer tube.

[0015] As can be seen from the above technical solutions, this application has the following effects: This application features an inner tube inserted inside an outer tube, connected to a rotating block. A cutting blade is installed inside the sampling end of the inner tube, extending towards the axis of the inner tube. Therefore, when the inner tube is removed from the outer tube for sampling, the cutting blade catches the bone tissue sample located inside the sampling end of the inner tube. Compared to the smooth inner wall of the inner tube in the prior art, the cutting blade increases the friction between the inner tube and the bone tissue sample, reducing sampling failures caused by bone tissue sample slippage and improving the sampling success rate. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a bone sampler according to this application; Figure 2 This is a schematic diagram of a cutting blade in a bone sampler according to this application; Figure 3 This is a schematic diagram of the inner tube of a bone sampler according to this application; Figure 4 This is a schematic diagram of a groove on the puncture needle in a bone sampler according to this application; Figure 5 This is a top view schematic diagram of the outer tube handle of a bone sampler according to this application; Figure 6 This is a schematic diagram illustrating the movement of the movable block during the rotation of the rotating block in this application; In the figure, there are: outer tube handle 01, outer tube 02, inner tube 03, rotating block 04, cutting blade 05, puncture needle 06, puncture handle 07, limiting block 08, limiting plate 09, limiting groove 10, distance scale 11, movable block 12, notch 13, and groove 14. Detailed Implementation

[0018] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0019] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0020] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0021] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] To address the issue of bone tissue samples easily slipping during sampling from the inner tube in existing technologies, this application provides a bone sampler to increase the friction between the bone tissue sample and the inner wall of the inner tube, thereby reducing sampling failures. The specific implementation process of this application is described below.

[0024] Please see Figures 1 to 6 The bone sampler provided in this application includes: The outer tube handle 01, outer tube 02, inner tube 03, and rotating block 04 are included. The outer tube 02 is fixed to the outer tube handle 01, and a recessed area is provided on the outer tube handle 01, which is connected to the outer tube 02. The inner tube 03 includes a sampling end and a rotating end. The rotating end is connected to the rotating block 04 located in the recessed area. The sampling end is inserted into the outer tube 02, and a cutting blade 05 is provided inside the sampling end. The cutting blade 05 extends towards the axis of the inner tube 03, so that when the inner tube 03 is withdrawn from the outer tube 02, the cutting blade 05 clamps the bone tissue sample.

[0025] The outer tube handle 01 is a handheld operating component, made of medical-grade polymer material by injection molding, and has anti-slip texture on the surface; One end of the outer tube 02 is connected to the outer tube handle 01, and the other end is provided with a pointed structure, through which the human body structure is punctured; the inner tube 03 is shorter than the length of the outer tube 02, and the two ends of the inner tube 03 are the sampling end and the rotating end, respectively. The rotating end is connected to the rotating block 04. The sampling end is inserted into the outer tube 02. The rotating block 04 can move upward in the recessed area. When the rotating block 04 moves upward, it carries the inner tube 03 out of the outer tube 02.

[0026] Inside the sampling end of the inner tube 03, there is a cutting blade 05. The cutting blade 05 protrudes and extends towards the axis of the inner tube 03. In actual use, the inner tube 03 is inserted into the outer tube 02, and the inner tube 03 is punctured together with the outer tube 02. When the sampling end of the inner tube 03 reaches the sampling position, the inner tube 03 is rotated by rotating the rotating block 04. The cutting blade 05 of the inner tube 03 rotates accordingly. After rotation, the cutting blade 05 first cuts the bone tissue sample. Then, when the inner tube 03 is removed, because part of the cutting blade 05 is inserted into the bone tissue sample, it will hook the bone tissue sample, so that the bone tissue sample is removed together with the inner tube 03, thereby reducing the possibility of the bone tissue sample slipping and improving the sampling success rate.

[0027] The cutting blade 05 is set on the inner wall of the inner tube 03 and extends from the inner wall towards the axis of the inner tube 03. The cutting blade 05 is perpendicular to the inner tube 03. The extension length can be 0.5mm, 1mm, etc. The extension length is not specifically limited here, and the actual achievable length shall prevail.

[0028] In this embodiment, by inserting the inner tube 03 inside the outer tube 02 and connecting the inner tube 03 to the rotating block 04, a cutting blade 05 is provided inside the sampling end of the inner tube 03 and extends towards the axis of the inner tube 03. Therefore, when the inner tube 03 is removed from the outer tube 02 for sampling, the cutting blade 05 clamps the bone tissue sample located inside the sampling end of the inner tube 03. Thus, compared with the smooth inner wall of the inner tube 03 in the prior art, the cutting blade 05 increases the friction between the inner tube 03 and the bone tissue sample, reduces the sampling failure caused by the bone tissue sample slipping, and improves the sampling success rate.

[0029] In an optional embodiment, the bone sampler further includes a puncture needle 06 and a puncture handle 07. The puncture needle 06 is connected to the puncture handle 07. The puncture needle 06 passes through the rotating block 04 and is inserted into the inner tube 03. The puncture end of the puncture needle 06 protrudes from the end of the outer tube 02.

[0030] In this embodiment, the length of the puncture needle 06 is longer than the length of the outer tube 02. In actual use, the inner tube 03 is first inserted into the outer tube 02, and then the puncture needle 06 is inserted into the inner tube 03. At this time, the rotating block 04 is located in the recessed area of ​​the outer tube handle 01, and the puncture handle 07 is placed on the rotating block 04, covering the recessed area. The puncture end of the puncture needle 06 is exposed at the end of the outer tube 02. The puncture end has higher rigidity and is easier to puncture, which can reduce the risk of bending of the outer tube 02 and the inner tube 03.

[0031] The cutting blade 05 has a certain degree of rigidity. If it directly contacts the puncture needle 06, it will damage both the puncture needle 06 and the cutting blade 05. Therefore, a certain distance needs to be maintained between the cutting blade 05 and the puncture needle 06. In this optional embodiment, the puncture needle 06 is provided with a groove 14, which faces the cutting blade 05, allowing the cutting blade 05 to be embedded in the groove 14. In this embodiment, the groove 14 is used to accommodate a portion of the cutting blade 05, and the end of the cutting blade 05 does not contact the bottom of the groove 14.

[0032] After the puncture reaches the sampling position, the puncture needle 06 is withdrawn. Then, the inner tube 03 and outer tube 02 are inserted a certain distance towards the sampling position, such as 1cm or 2cm. At this time, the bone tissue sample with the same inner diameter as the inner tube 03 enters the inner tube 03. Since the cutting blade 05 extends towards the axis of the inner tube 03, when the inner tube 03 is rotated, the cutting blade 05 will cut the bone tissue sample. To ensure the cutting effect, the inner tube 03 is rotated 360 degrees or more (such as 450 degrees). After rotation, the cutting blade 05 is not aligned with the initial position (the position of the cutting blade 05 during the puncture). Then, the inner tube 03 is removed. The cutting blade 05 holds the bone tissue sample inside the inner tube 03, thereby reducing the risk of the bone tissue sample slipping and improving the sampling success rate.

[0033] In this optional embodiment, the cutting blade 05 and the inner tube 03 are integrally formed.

[0034] Please continue reading. Figure 2 In one optional embodiment, the rotating block 04 is circular, and the side of the rotating block 04 is provided with anti-slip texture. In this embodiment, in order to better rotate the inner tube 03, anti-slip texture is provided on the side of the rotating block 04 to improve the friction of the rotating block 04. Medical staff can rotate the inner tube 03 by twisting the rotating block 04.

[0035] In an optional embodiment, a limiting block 08 is provided on the rotating block 04, a limiting plate 09 is provided in the recessed area, a rotating groove is formed between the limiting plate 09 and the bottom of the recessed area, a limiting groove 10 is provided on the inner wall of the recessed area, the limiting groove 10 is connected to the rotating groove, and the limiting block 08 is controlled to move along the rotating groove.

[0036] In this embodiment, during the rotation of the inner tube 03, it may come out. To address this, a limiting block 08 is provided on the rotating block 04, located on the bottom side of the rotating block 04. A limiting plate 09 is provided in the recessed area, and there is a height difference between the limiting plate 09 and the bottom of the recessed area. The location of this height difference is a rotating groove. A limiting groove 10 is vertically provided on the inner wall of the recessed area, extending downward through the limiting plate 09 and communicating with the rotating groove.

[0037] Therefore, when inserting the inner tube 03, the limiting block 08 is aligned with the limiting groove 10 and inserted until the limiting block 08 reaches the position of the rotating groove. When the inner tube 03 is rotated, the limiting block 08 moves along the rotating groove and is restricted above by the limiting plate 09, thus achieving the function of preventing backlash.

[0038] Please continue reading. Figures 5-6 In an optional embodiment, a movable block 12 is provided on the rotating block 04, and a notch 13 is provided on the inner wall of the recessed area, and the movable block 12 is controlled to move toward the notch 13.

[0039] The movable block 12 is in an active state and is controlled by medical personnel. The movable block 12 can move on the rotating block 04. The position of the notch 13 is aligned with the position of the movable block 12. During the puncture process, it is necessary to keep the inner tube 03 from rotating. Therefore, the movable block 12 can be moved towards the notch 13. At this time, the movable block 12 is stuck in the notch 13 to ensure that the inner tube 03 does not rotate. During the cutting and sampling process, it is necessary to rotate the inner tube 03. At this time, the movable block 12 is removed from the notch 13. At this time, the rotating block 04 is in a freely rotating state. Medical personnel can control the rotation of the rotating block 04 to achieve the cutting action of the cutting blade 05.

[0040] In an optional embodiment, the cutting blade 05 is triangular in shape, with one tip of the cutting blade 05 extending toward the puncture needle 06 and located in the groove 14 of the puncture needle 06.

[0041] In an optional embodiment, a distance scale 11 is provided on the outer wall of the outer tube 02. In this embodiment, medical personnel can determine the current puncture distance and the distance to the target position (sampling position) based on the distance scale 11, further improving ease of use.

[0042] The following examples illustrate the usage process of this application in specific scenarios: During the preparation stage, the inner tube 03 is first inserted into the outer tube 02. At this time, the rotating block 04 is located in the recessed area of ​​the outer tube handle 01, the limiting block 08 on the rotating block 04 is located in the limiting groove 10, and the movable block 12 on the rotating block 04 is pushed out and stuck in the notch 13. Then, the puncture needle 06 is inserted into the inner tube 03. At this time, part of the cutting blade 05 in the sampling end of the inner tube 03 is located in the groove 14 of the puncture needle 06.

[0043] During the puncture stage, medical staff hold the outer tube handle 01 and puncture the designated location on the human body. They use the distance scale 11 on the outer tube 02 to determine whether the sampling location has been reached. If it has, the puncture is stopped and the puncture needle 06 is pulled out from the inner tube 03. At this time, the medical staff continue to insert the outer tube 02 and the inner tube 03 into the sampling location at a designated distance (such as 1cm, 2cm, etc.).

[0044] During the sampling stage, medical staff rotate the rotating block 04 to make the inner tube 03 rotate. At this time, the cutting blade 05 in the inner tube 03 cuts the bone tissue sample that has entered the inner tube 03. After rotating the inner tube 03 more than one revolution and stopping the rotation, the cutting blade 05 is no longer aligned with the initial position (the position of the cutting blade 05 during the puncture). At this time, the inner tube 03 is pulled out, and the bone tissue sample is stuck by the cutting blade 05. Therefore, the bone tissue sample is easy to remove, reducing the chance of slippage and improving the sampling success rate.

[0045] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bone sampler, characterized in that, include: An outer tube handle, an outer tube, an inner tube, and a rotating block; the outer tube is fixed to the outer tube handle, and the outer tube handle has a recessed area that communicates with the outer tube; the inner tube includes a sampling end and a rotating end, the rotating end being connected to the rotating block located in the recessed area, the sampling end being inserted into the outer tube, and a cutting blade being provided inside the sampling end, the cutting blade extending towards the axis of the inner tube, so that when the inner tube is withdrawn from the outer tube, the cutting blade catches the bone tissue sample.

2. The bone sampler according to claim 1, characterized in that, The bone sampler also includes a puncture needle and a puncture handle. The puncture needle is connected to the puncture handle. The puncture needle passes through the rotating block and is inserted into the inner tube. The puncture end of the puncture needle protrudes from the end of the outer tube.

3. The bone sampler according to claim 2, characterized in that, The puncture needle is provided with a groove, which faces the cutting blade, so that the cutting blade is embedded in the groove.

4. The bone sampler according to any one of claims 1 to 3, characterized in that, The cutting blade and the inner tube are integrally formed.

5. The bone sampler according to any one of claims 1 to 3, characterized in that, The rotating block is circular, and its side surface is provided with anti-slip texture.

6. The bone sampler according to any one of claims 1 to 3, characterized in that, A limiting block is provided on the rotating block, a limiting plate is provided in the recessed area, a rotating groove is formed between the limiting plate and the bottom of the recessed area, a limiting groove is provided on the inner wall of the recessed area, the limiting groove is connected to the rotating groove, and the limiting block is controlled to move along the rotating groove.

7. The bone sampler according to claim 6, characterized in that, The rotating block is provided with a movable block, and the inner wall of the recessed area is provided with a notch, and the movable block is controlled to move towards the notch.

8. The bone sampler according to any one of claims 1 to 3, characterized in that, The cutting blade is triangular in shape.

9. The bone sampler according to any one of claims 1 to 3, characterized in that, The outer wall of the outer tube is provided with distance scale.

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