Biopsy sleeve, biopsy suit device and biopsy puncture suit device

Abstract

The utility model discloses a biopsy sleeve, a biopsy suit device and a biopsy puncture suit device. The biopsy sleeve comprises a metal rod which is of a hollow structure; the holding part is arranged at the rear end of the metal rod; and the metal wire is arranged in the front end of the metal rod and is transversely arranged on the cross section of the metal rod. After the biopsy sleeve is inserted into a to-be-taken tissue part, the holding part is rotated, the front end of the metal rod and the metal wire can completely cut the biopsy tissue, a base part of a to-be-biopsy bone tissue is included, especially the metal wire can help to complete cutting dissociation of a target puncture part, and therefore the biopsy tissue can be taken out smoothly; the technical problem that in the prior art, a base part of a biopsy puncture device for pre-fetching sclerotin is often connected with remaining sclerotin of a vertebral body, and bone tissue in the vertebral body cannot be taken out is solved. The device has the advantages of simple structure, low cost, complete and thorough cutting, light weight, high strength, convenience in operation and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to a biopsy sleeve and a biopsy set device and a biopsy puncture set device containing the biopsy sleeve. Background Art

[0002] Biopsy of osteoporotic thoracolumbar fractures is a routine surgical procedure in clinical practice. At present, the biopsy puncture device for thoracolumbar fractures used in clinical practice is a hollow metal rod structure. This type of metal rod can be inserted into the vertebral body through the working channel created by the vertebral puncture device, and the bone in the vertebral body is cut by rotating the metal rod while pushing it deep. After completion, the metal rod is withdrawn from the body and the bone tissue is removed.

[0003] However, vertebral bone tissue is a relatively hard human tissue, and the rotational advancement of the metal rod cannot always completely separate the bone screwed into the metal rod from its surrounding tissue. In particular, the basal part of the pre-removed bone is often connected to the remaining bone of the vertebral body, resulting in the tissue to be biopsied remaining inside the vertebral body after the metal rod is withdrawn, and the bone tissue inside the vertebral body cannot be removed. Utility Model Content

[0004] The embodiment of the present application provides a biopsy sleeve to solve the technical problem in the prior art that the base part of the biopsy puncture device for pre-extracting bone is often connected to the remaining bone of the vertebral body, making it impossible to remove the bone tissue in the vertebral body.

[0005] The present application embodiment provides a biopsy sleeve, comprising:

[0006] A metal rod, wherein the metal rod is a hollow structure;

[0007] A gripping portion, the gripping portion being disposed at the rear end of the metal rod;

[0008] The metal wire is arranged inside the front end of the metal rod and is transversely arranged on the cross section of the metal rod.

[0009] Preferably, the metal wire and the front end edge of the metal rod are arranged on the same plane.

[0010] Preferably, the metal wire is arranged along the diameter direction of the metal rod.

[0011] Preferably, the diameter of the metal wire is 0.1-0.5 mm.

[0012] Preferably, a hollow channel penetrating the entire gripping portion is provided at the center of the gripping portion, and the rear end of the metal rod is inserted into the hollow channel.

[0013] More preferably, the gripping portion is connected to the metal rod by interference fit, and when the gripping portion is rotated, the metal rod is driven to rotate together.

[0014] Preferably, the gripping portion comprises:

[0015] a central column, wherein the hollow passage is disposed in the central column;

[0016] A bottom plate, the bottom plate extending radially outward from a lower portion of the central column;

[0017] The cover plate extends radially outward from the top of the central column and bends downward in an arc shape until it is connected to the outer edge of the bottom plate.

[0018] More preferably, the gripping portion further comprises:

[0019] An intermediate reinforcing plate extends radially outward from the middle of the central column and bends downward in an arc shape until it is connected to the middle of the bottom plate.

[0020] The present application also provides a biopsy kit, including:

[0021] The biopsy sleeve as described above; and

[0022] The biopsy sleeve inner core comprises a push rod, the outer diameter of which matches the inner diameter of the metal rod of the biopsy sleeve so as to be inserted into the metal rod of the biopsy sleeve; the front end of the push rod is a closed plane.

[0023] The embodiment of the present application also provides a biopsy puncture kit device, including the above-mentioned biopsy kit device; as well as a puncture needle, a puncture sleeve and a guide needle.

[0024] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0025] 1. A metal wire is arranged inside the front end of the metal rod of the biopsy sleeve along the diameter direction. When in use, after the biopsy sleeve is inserted into the intended tissue site, the gripping part is rotated, and the front end of the metal rod and the metal wire will completely cut the biopsy tissue, including the base of the intended biopsy bone tissue. In particular, the metal wire will help to complete the cutting and freeing of the target puncture site, so that the biopsy tissue can be successfully removed. This solves the technical problem that the base part of the pre-extracted bone of the biopsy puncture device in the prior art is often connected to the remaining bone of the vertebral body, and the bone tissue in the vertebral body cannot be removed.

[0026] 2. After the cutting is completed, when the biopsy sleeve is withdrawn, the metal wire will block the bone tissue to be biopsied in the biopsy sleeve to prevent it from falling.

[0027] 3. The gripping part of the biopsy sleeve is designed as a hollow shell, including a central column, a cover plate and a bottom plate. The gripping part of the hollow shell is light in weight, which is convenient for surgical operations and reduces the burden on medical workers.

[0028] 4. The gripping portion of the biopsy sleeve is also provided with an intermediate reinforcing plate between the cover plate and the bottom plate, which can enhance the strength of the gripping portion while increasing the weight of the gripping portion only slightly.

[0029] 5. The biopsy sleeve provided in this application has a simple structure, low cost, strong practicality, and is easy to promote and use on a large scale.

[0030] 6. The biopsy sleeve and the biopsy kit and biopsy puncture kit containing the same provided in the present application are suitable for percutaneous bone grafting in minimally invasive surgery for thoracolumbar fractures, and are also suitable for tumor cutting in the spine and vertebral bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0032] Figure 1 This is a three-dimensional schematic diagram of a biopsy sleeve provided in Example 1 of the present application in one direction;

[0033] Figure 2 This is a three-dimensional schematic diagram of the biopsy sleeve provided in Example 1 of the present application from another direction;

[0034] Figure 3 This is a partial enlarged view of the biopsy sleeve provided in Example 1 of the present application;

[0035] Figure 4 A cross-sectional view of the biopsy sleeve provided in Example 1 of the present application;

[0036] Figure 5 This is a schematic diagram of the structure of the inner core of the biopsy sleeve provided in Example 2 of the present application;

[0037] Figure 6 This is a schematic diagram of the structure of the puncture needle provided in Example 3 of the present application;

[0038] Figure 7 This is a schematic diagram of the structure of the puncture sleeve provided in Example 3 of the present application;

[0039] Figure 8 This is a schematic diagram of the structure of the guide needle provided in Example 3 of the present application;

[0040] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] The embodiment of the present application provides a biopsy sleeve to solve the technical problem in the prior art that the base part of the biopsy puncture device for pre-extracting bone is often connected to the remaining bone of the vertebral body, making it impossible to remove the bone tissue in the vertebral body.

[0042] The technical solution in the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0043] A new biopsy sleeve is designed. The biopsy sleeve comprises a metal rod with a hollow structure. A gripping portion is arranged at the rear end of the metal rod. A metal wire is arranged inside the front end of the metal rod along the diameter direction.

[0044] When in use, a working channel is first established through the puncture needle, and then the biopsy sleeve with a metal wire at the front end is placed in the working channel. After inserting it into the tissue site to be removed, the gripping part is rotated, and the front end of the metal rod and the metal wire will completely cut the biopsy tissue, including the base of the bone tissue to be biopsied. In this way, the biopsy tissue can be smoothly removed, and then the matching push rod inner core can be used to push the biopsy tissue out.

[0045] In order to better understand the above technical solution, exemplary embodiments will be described in detail here, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are only examples of devices consistent with some aspects of the present application as detailed in the attached claims.

[0046] Embodiment 1

[0047] Figure 1 to Figure 4 Schematic diagram of the structure of the biopsy sleeve 100 provided in this embodiment, the biopsy sleeve 100 includes:

[0048] A metal rod 10, wherein the metal rod 10 is a hollow structure;

[0049] A gripping portion 20, the gripping portion 20 being disposed at the rear end of the metal rod 10;

[0050] The metal wire 30 is arranged inside the front end of the metal rod 10 and is located on the cross section of the front end of the metal rod 10 .

[0051] Combination Figure 3In a preferred embodiment, the diameter of the metal wire 30 is 0.1-0.5 mm, preferably 0.3 mm.

[0052] In a preferred embodiment, the metal wire 30 is disposed on the cross section of the front end of the metal rod 10 and is disposed along the diameter direction of the metal rod 10 .

[0053] Combination Figure 4 In a preferred embodiment, the gripping portion 20 includes a central column 21 , and a hollow channel 211 is provided inside the central column 21 . The diameter of the hollow channel 211 matches the outer diameter of the metal rod 10 , so that the metal rod 10 can be fixed in the hollow channel 211 .

[0054] The gripping portion 20 and the metal rod 10 are in interference fit, and when the gripping portion 20 is rotated, the metal rod 10 will rotate together.

[0055] The hollow channel 211 passes through the top of the gripping portion 20 to facilitate the insertion of the push rod inner core matching the biopsy sleeve 100 .

[0056] In a preferred embodiment, the grip portion 20 is a hollow shell, including a cover plate 22 and a base plate 24, the base plate 24 extends radially outward from the lower portion of the center column 21, and the cover plate 22 extends radially outward from the top of the center column 21 and bends downward in an arc until it is connected to the edge of the base plate 24.

[0057] The gripping portion 20 of the hollow shell is light in weight, which is convenient for surgical operations and reduces the burden on medical workers.

[0058] In a preferred embodiment, the grip portion 20 further includes a middle reinforcing plate 23 , which extends radially outward from the middle of the central column 21 and bends downward in an arc shape until it is connected to the middle of the bottom plate 24 .

[0059] The provision of the middle reinforcing plate 23 can enhance the strength of the grip portion 20 while only slightly increasing the weight of the grip portion.

[0060] The biopsy sleeve provided in this embodiment is provided with a metal wire 30 inside the front end of the metal rod 10 and along the diameter direction of the metal rod 10. When in use, the gripping portion is rotated, and the front end of the metal rod 10 and the metal wire 30 will completely cut the biopsy tissue, including the base of the bone tissue to be biopsied, so that the biopsy tissue can be successfully removed.

[0061] At the same time, the provision of the metal wire 30 can also block the bone tissue to be biopsied that rotates into the metal rod 10 when the metal rod 10 is withdrawn, preventing it from falling.

[0062] Implementation II

[0063] This embodiment provides a biopsy kit, including:

[0064] The biopsy sleeve 100 as described in embodiment 1; and

[0065] The biopsy sleeve inner core 200 has an outer diameter that matches the inner diameter of the metal rod 10 of the biopsy sleeve, so that the biopsy sleeve inner core 200 can be inserted into the metal rod 10 of the biopsy sleeve to push out the bone tissue to be biopsied in the metal rod 10.

[0066] In a preferred embodiment, Figure 5 As shown, the biopsy sleeve inner core 200 includes a push rod 201 , and a push rod handle 202 is provided at the rear end of the push rod 201 .

[0067] The outer diameter of the push rod 201 matches the inner diameter of the metal rod 10 of the biopsy sleeve, and the front end of the push rod 201 is a closed plane, so that the push rod 201 can be inserted into the metal rod 10 of the biopsy sleeve and push out the bone tissue to be biopsied in the metal rod 10.

[0068] Implementation Three

[0069] This embodiment provides a biopsy puncture kit, including the biopsy kit as described in Embodiment 2, as well as a puncture needle 300, a puncture sleeve 400 and a guide needle 500.

[0070] Figure 6 The structure diagram of the puncture needle 300 is shown, and the puncture needle 300 includes a needle bar 301, and a needle bar handle 302 is provided at the rear end of the needle bar 301. The needle bar 301 is a hollow structure, and a through channel is provided in the center of the needle bar handle 302 to facilitate the insertion of the needle bar 301.

[0071] Figure 7 The structure diagram of the puncture sleeve 400 is shown, and the puncture sleeve 400 includes a metal sleeve rod 401, and a sleeve rod handle 402 is provided at the rear end of the metal sleeve rod 401. The metal sleeve rod 401 is a hollow structure, and a through channel is provided in the center of the sleeve rod handle 402 to facilitate the insertion of the metal sleeve rod 401.

[0072] The inner diameter of the metal sleeve rod 401 matches the outer diameter of the needle rod 301, so that the needle rod 301 of the puncture needle 300 can be inserted into the metal sleeve rod 401 of the puncture sleeve 400, and the two can be used as a complete set.

[0073] Figure 8 The figure is a schematic structural diagram of the guide needle 500 . The guide needle 500 is made of metal. The diameter of the guide needle 500 is smaller than the inner diameter of the metal sleeve rod 401 of the puncture sleeve 400 , so that the guide needle 500 can be inserted into the puncture sleeve 400 .

[0074] The method of using the biopsy puncture kit provided in this embodiment is as follows:

[0075] First, insert the needle shaft of the puncture needle 300 into the puncture sleeve 400, combine the puncture needle 300 and the puncture sleeve 400 together, and complete the transpedicular puncture process under the monitoring of a C-arm X-ray machine; insert the puncture needle 300 and the puncture sleeve 400 to a suitable depth, remove the puncture needle 300, and retain the puncture sleeve 400.

[0076] Then, the guide needle 500 is passed through the puncture sleeve 400 and enters the interior of the vertebral body, and the puncture sleeve 400 is removed, thereby establishing a working channel.

[0077] Next, the biopsy sleeve 100 is inserted along the guide needle 500, and the guide needle 500 is removed after confirming that the puncture position is correct through the C-arm X-ray machine.

[0078] Next, the gripping part of the biopsy sleeve 100 is rotated, and the front end of the metal rod 10 and the metal wire 30 will completely cut the biopsy tissue, including the base of the bone tissue to be biopsied. In particular, the metal wire 30 will help to complete the cutting and freeing of the target puncture site. After the cutting is completed, the biopsy sleeve 100 is withdrawn. During the withdrawal process of the metal rod 10, the metal wire 30 will block the bone tissue to be biopsied in the metal rod 10 to prevent it from falling.

[0079] Finally, the biopsy sleeve inner core 200 is inserted into the biopsy sleeve 100, and the biopsy tissue in the biopsy sleeve 100 is pushed out, and the biopsy is completed.

[0080] In a preferred embodiment, the biopsy puncture kit provided in this embodiment can also be used for cutting tumors in the spine and vertebral bodies.

[0081] It should be understood that the directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0082] The above is only a preferred embodiment of the present application, and is not any formal or substantial limitation to the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present application, and these improvements and supplements should also be regarded as the protection scope of the present application. Any technician familiar with this profession can make some changes, modifications and evolutions of the technical content disclosed above without departing from the spirit and scope of the present application, which are equivalent embodiments of the present application; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the substantial technology of the present application are still within the scope of the technical solution of the present application.

Claims

1. A biopsy sleeve, characterized in that: include: A metal rod, wherein the metal rod is a hollow structure; A gripping portion, the gripping portion being disposed at the rear end of the metal rod; The metal wire is arranged inside the front end of the metal rod and is transversely arranged on the cross section of the metal rod.

2. The biopsy sleeve according to claim 1, characterized in that The metal wire and the front end edge of the metal rod are arranged on the same plane.

3. The biopsy sleeve according to claim 1 or 2, characterized in that: The metal wire is arranged along the diameter direction of the metal rod.

4. The biopsy sleeve according to claim 1, characterized in that: The diameter of the metal wire is 0.1-0.5 mm.

5. The biopsy sleeve according to claim 1, characterized in that: A hollow channel penetrating the entire gripping portion is provided at the center of the gripping portion, and the rear end of the metal rod is inserted into the hollow channel.

6. The biopsy sleeve according to claim 5, characterized in that The gripping portion is connected to the metal rod by interference fit, and when the gripping portion is rotated, the metal rod is driven to rotate together.

7. The biopsy sleeve according to claim 5 or 6, characterized in that: The gripping portion comprises: a central column, wherein the hollow passage is disposed in the central column; A bottom plate, the bottom plate extending radially outward from a lower portion of the central column; The cover plate extends radially outward from the top of the central column and bends downward in an arc shape until it is connected to the outer edge of the bottom plate.

8. The biopsy sleeve according to claim 7, characterized in that The gripping portion further comprises: An intermediate reinforcing plate extends radially outward from the middle of the central column and bends downward in an arc shape until it is connected to the middle of the bottom plate.

9. A biopsy kit, characterized in that: include: The biopsy sleeve according to any one of claims 1 to 8; as well as The biopsy sleeve inner core comprises a push rod, the outer diameter of which matches the inner diameter of the metal rod of the biopsy sleeve so as to be inserted into the metal rod of the biopsy sleeve; the front end of the push rod is a closed plane.

10. A biopsy puncture kit, characterized in that: The biopsy kit comprises the biopsy kit as claimed in claim 9; and a puncture needle, a puncture sleeve and a guide needle.

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