Vertebral body needle biopsy needle

Abstract

The utility model discloses a centrum puncture biopsy needle which comprises an outer tube structure, the outer tube structure comprises an outer sleeve, the outer sleeve is provided with an outer tube handle, the outer tube handle is provided with a main installation opening communicated with the outer sleeve, and the outer sleeve can be spliced with an inner core structure or an inner tube structure; the inner core structure comprises a puncture cone, a cone handle is arranged at one end of the puncture cone, and the cone handle is connected with the outer tube handle through an assembling assembly; according to the puncture device, tissue sclerotin can be effectively cut off, sclerotin tissue can be cut into the inner sleeve, target sclerotin can be conveniently extracted, the problem that an existing puncture device cannot accurately extract the target sclerotin is solved, positioning and assembling can be conducted, the precision during assembling is improved, and the puncture device is convenient to use. The precision of sampling operation is ensured, and the use is convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical apparatus and instruments, and particularly relates to a vertebral body puncture biopsy needle. BACKGROUND

[0002] Vertebral body biopsy is mainly aimed at patients with suspected primary benign or malignant tumors or metastatic bone tissue tumors, especially when the imaging examination results and medical history information cannot be used to make a diagnosis, the sampling of the damaged tissue can determine its pathological nature and distinguish it from non-tumor lesions such as infection and trauma, which has important reference significance for the development of treatment plans. The current commonly used biopsy sampling methods for vertebral bodies mainly include incision biopsy and closed puncture biopsy, and incision biopsy is suitable for tumor cases with superficial location, small volume and clear imaging results.

[0003] The utility model discloses a percutaneous puncture vertebral body biopsy device discloses a percutaneous puncture vertebral body biopsy device, including puncture trocar, guide piece, the combined work sleeve of being placed along the guide piece, the clamping piece for clamping bone tissue or focus of infection, the puncture trocar includes the puncture needle for puncture into the vertebral body and the puncture pipe of setting up outside the puncture needle, the combined work sleeve includes the inner core and the outer pipe of setting up outside the inner core, the outer pipe end is provided with the sawtooth for separating bone tissue or focus of infection, this scheme can simply and conveniently obtain the specimen (namely the bone tissue or focus of infection after separating with sawtooth). And simple operation does not need to carry out the operation of repeated bone taking, when the above scheme is sampling to the sample, cannot cut off and cut the tissue bone quality, is inconvenient for the quick extraction of target bone quality, simultaneously it can not carry out quick assembly positioning, and the use precision is not high, for this, we propose a vertebral body puncture biopsy needle. UTILITY MODEL CONTENTS

[0004] The utility model discloses a vertebral body puncture biopsy needle, to solve the problem that the puncture needle in the prior art cannot cut off and cut the tissue bone quality when sampling the sample, which is inconvenient for quick extraction of the target bone quality, and the puncture needle cannot be quickly assembled and positioned, and the use precision is not high.

[0005] To achieve the above object, the utility model provides the following technical scheme: a vertebral body puncture biopsy needle, including outer tube structure, the outer tube structure includes outer sleeve tube, be provided with outer tube handle on the outer sleeve tube, be provided with the main installation mouth that communicates with the outer sleeve tube on the outer tube handle, the outer sleeve tube can be spliced with inner core structure or inner tube structure;

[0006] The inner core structure includes a puncture cone, one end of the puncture cone is provided with a cone handle, and the cone handle is connected with the outer tube handle through an assembly component;

[0007] The inner tube structure can also install a puncture needle.

[0008] Preferably, the assembly component comprises a positioning part arranged on the taper handle, the positioning part is clamped in a positioning groove arranged on the outer tube handle, and the taper handle can be positioned and installed with the outer tube handle.

[0009] Preferably, locking bolts are further arranged on both sides of the outer tube handle, one end of the locking bolt is connected with a threaded hole arranged in the middle of the positioning part, the taper handle can be locked, and the puncture cone and the outer sleeve can be simultaneously punctured.

[0010] Preferably, the inner tube structure is an inner sleeve, an inner tube handle is arranged on the inner sleeve, and an inner installation port corresponding to the inner sleeve is arranged on the inner tube handle, so that the puncture needle can be installed.

[0011] Preferably, a split tooth is arranged at the bottom of the inner sleeve, and a split cutter is arranged on the lower side of the inner wall of the inner sleeve, so that the tissue bone can be cut and cut off.

[0012] Preferably, the split cutter and the inner sleeve are arranged at an angle of 45° in cross section, so that the tissue bone can be rotary cut.

[0013] Preferably, a protruding part is arranged on the inner wall of the inner sleeve on the upper side of the split cutter, the friction of the inner wall of the inner sleeve is increased, and the adhesion of the bone tissue is improved.

[0014] Preferably, an upper sleeve is arranged on the main installation port, and a grommet is detachably arranged on the upper sleeve, so that the installation of the inner sleeve can be positioned.

[0015] Preferably, a threaded part is arranged on the lower part of the inner wall of the outer sleeve, so that the soft gasket can be automatically bent.

[0016] Preferably, the inner tube structure is an inner sleeve, an inner tube handle is arranged on the inner sleeve, an inner installation port corresponding to the inner sleeve is arranged on the inner tube handle, a protruding part is arranged on the lower side of the inner wall of the inner sleeve, and an arc-shaped soft gasket is arranged on one side of the bottom of the inner sleeve, so that the bone tissue can be cut off.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] (1) The utility model can effectively cut off the tissue bone, cut the bone tissue into the inner sleeve, conveniently extract the target bone, and solve the problem that the existing puncture device cannot accurately take the target bone.

[0019] (2) The utility model can be positioned and assembled, improve the precision during assembly, ensure the precision of sampling operation, and is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a half-sectional view of the outer sleeve and inner core structure during assembly in this utility model.

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 This is a half-sectional structural diagram of the outer sleeve and inner sleeve during assembly in this utility model;

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 This is a half-sectional view of the puncture needle and inner cannula during assembly in this utility model.

[0026] Figure 7 This is a schematic diagram of the overall structure of the outer tube in Example 2;

[0027] Figure 8 This is a schematic diagram of the overall structure of the inner tube in Example 2;

[0028] Figure 9 This is a half-sectional schematic diagram of the inner tube structure in Example 2;

[0029] Figure 10 This is a schematic diagram of the structure during the installation of the washer ring in Example 2;

[0030] Figure 11 This is a half-sectional structural diagram of the inner sleeve and outer sleeve during positioning and installation in Example 2;

[0031] Figure 12 This is a schematic diagram of the half-section structure during sampling in Example 2;

[0032] In the diagram: 11. Outer tube; 12. Outer tube handle; 13. Main mounting port; 14. Locking bolt; 15. Positioning groove; 16. Upper sleeve; 17. Washer ring; 18. Threaded part; 21. Puncture cone; 22. Cone handle; 23. Positioning part; 24. Threaded hole; 31. Inner mounting port; 32. Inner tube handle; 33. Inner sleeve; 34. Dividing teeth; 35. Dividing blade; 36. Protrusion; 37. Soft pad; 41. Puncture needle. Detailed Implementation

[0033] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0034] Embodiment one

[0035] Please refer to Figures 1-6 The present application provides a technical solution: a vertebral puncture biopsy needle, comprising an outer tube structure, the outer tube structure comprising an outer sleeve 11, the outer sleeve 11 being provided with an outer sleeve 11, the outer tube handle 12 being provided with a main installation port 13 communicated with the outer sleeve 11, the outer sleeve 11 being spliced with an inner core structure or an inner tube structure;

[0036] The inner core structure comprises a puncture cone 21, one end of the puncture cone 21 being provided with a cone handle 22, the cone handle 22 being connected with the outer tube handle 12 through an assembly component; the inner tube structure can further install a puncture needle 41.

[0037] The assembly component comprises a positioning part 23, the positioning part 23 being arranged on the cone handle 22, the positioning part 23 being clamped in a positioning groove 15, the positioning groove 15 being arranged on the outer tube handle 12, when the puncture cone 21 and the outer sleeve 11 are installed, the positioning part 23 on the cone handle 22 is clamped into the positioning groove 15, and the cone handle 22 and the outer tube handle 12 are positioned and installed.

[0038] The outer tube handle 12 is further provided with a locking bolt 14 on both sides, one end of the locking bolt 14 being connected with a threaded hole 24, the threaded hole 24 being arranged in the middle of the positioning part 23, the locking bolt 14 being rotated to make the end of the locking bolt 14 be screwed, so that the cone handle 22 can be locked, and the puncture cone 21 and the outer sleeve 11 can be punctured at the same time.

[0039] The inner tube structure is an inner sleeve 33, the inner sleeve 33 being provided with an inner tube handle 32, the inner tube handle 32 being provided with an inner installation port 31 corresponding to the inner sleeve 33, so as to facilitate the installation of the puncture needle 41.

[0040] The inner sleeve 33 is provided with a split tooth 34 at the bottom, and the inner wall of the inner sleeve 33 is provided with a split knife 35 at the lower side, so as to cut and cut off the tissue bone.

[0041] Firstly, the puncture cone 21 is installed in the outer sleeve 11 through the main installation port 13, and the cone handle 22 is clamped with the outer tube handle 12, so that the outer sleeve 11 passes through the pedicle and the posterior margin of the vertebral body together with the puncture cone 21 to establish a channel, then the puncture cone 21 is taken out, and then the inner sleeve 33 is installed in the outer sleeve through the main installation port 13, so that the outer sleeve 11 and the inner sleeve 33 enter the vertebral body to a target depth, and then the inner sleeve 33 is driven to rotate by the inner tube handle 32 (the rotation angle of the inner sleeve 33 is more than 180°), the inner sleeve 33 drives the cutting tooth 34 and the cutting knife 35 to rotate, the cutting tooth 34 and the cutting knife 35 quickly cut and cut the bone tissue, and the bone tissue is attached to the inner wall of the inner sleeve 33, then the inner sleeve 33 is taken out from the outer sleeve 11, the puncture needle 41 is installed in the inner sleeve 33 through the inner installation port 31, and the puncture needle 41 is pushed to push the bone tissue out.

[0042] Further, the cutting knife 35 and the inner sleeve 33 are arranged at an angle of 45° with the cross section, which facilitates the rotary cutting of the bone tissue.

[0043] Further, the inner wall of the inner sleeve 33 on the upper side of the cutting knife 35 is provided with a protruding portion 36, which increases the friction of the inner wall of the inner sleeve 33 and further improves the adhesion of the bone tissue.

[0044] Example two

[0045] Please refer to Figures 7-12 , the main installation port 13 is provided with an upper sleeve 16, the upper sleeve 16 is detachably provided with a grommet 17, the installation of the inner sleeve 33 can be positioned, the inner wall of the outer sleeve 11 is provided with a threaded portion 18 at the lower part, which can automatically bend the soft gasket 37, the inner tube structure is the inner sleeve 33, the inner sleeve 33 is provided with an inner tube handle 32, the inner tube handle 32 is provided with an inner installation port 31 corresponding to the inner sleeve 33, the inner wall of the inner sleeve 33 is provided with a protruding portion 36 at the lower side, and the inner sleeve 33 is provided with an arc-shaped soft gasket 37 at one side of the bottom, which can cut the bone tissue, specifically, the length of the outer sleeve 11 is the same as the length of the inner sleeve 33, the height L0 of the threaded portion 18 is the same as the height L0 of the grommet 17, and the height of the soft gasket 37 is the inner diameter of the inner sleeve 33.

[0046] Firstly, the puncture cone 21 is installed in the outer sleeve 11 through the main installation port 13, and the cone handle 22 is clamped with the outer tube handle 12, so that the outer sleeve 11 passes through the vertebral arch root and the posterior margin of the vertebral body together with the puncture cone 21 to establish a channel, then the puncture cone 21 is taken out, then the grommet 17 is fixed on the upper sleeve 16, then the inner sleeve 33 is inserted into the outer sleeve 11, so that the inner tube handle 32 is attached to the top of the grommet 17, at this time, the soft gasket 37 at the end of the inner sleeve 33 is flush with the end of the threaded part 18, and the outer sleeve 11 and the inner sleeve 33 are rotated to reach the target depth, then the grommet 17 is removed, and the inner sleeve 33 is pushed to enter the vertebral body, at this time, the soft gasket 37 is bent inward under the blocking action of the threaded part 18, and the bone tissue is cut off, and then the bone tissue is attached in the inner sleeve 33, then the inner sleeve 33 is taken out from the outer sleeve 11, and the bone tissue is pushed out through the puncture needle 41.

[0047] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A vertebral body puncture biopsy needle comprising an outer tube structure, characterized by: The outer tube structure comprises an outer sleeve (11), an outer tube handle (12) is arranged on the outer sleeve (11), a main mounting hole (13) in communication with the outer sleeve (11) is arranged on the outer tube handle (12), and the outer sleeve (11) can be spliced with the inner core structure or the inner tube structure; The inner core structure comprises a puncture cone (21), a cone handle (22) is arranged at one end of the puncture cone (21), and the cone handle (22) is connected with the outer tube handle (12) through an assembly component; Wherein, the inner tube structure can also be installed with a puncture needle (41).

2. A vertebral core needle biopsy needle according to claim 1 wherein: The assembly component comprises a positioning part (23), the positioning part (23) is arranged on the cone handle (22), and the positioning part (23) is clamped in a positioning groove (15), the positioning groove (15) is arranged on the outer tube handle (12).

3. A vertebral core needle biopsy needle according to claim 2, wherein: The outer tube handle (12) is also provided with locking bolts (14) on both sides, one end of the locking bolts (14) is connected with a threaded hole (24), and the threaded hole (24) is arranged in the middle of the positioning part (23).

4. The vertebral core needle biopsy needle of claim 1 wherein: The inner tube structure is an inner sleeve (33), an inner tube handle (32) is arranged on the inner sleeve (33), and an inner mounting hole (31) corresponding to the inner sleeve (33) is arranged on the inner tube handle (32).

5. A vertebral core needle biopsy needle according to claim 4, wherein: A slitting tooth (34) is arranged at the bottom of the inner sleeve (33), and a slitting cutter (35) is arranged on the lower side of the inner wall of the inner sleeve (33).

6. A vertebral core needle biopsy needle according to claim 5, wherein: The slitting cutter (35) is arranged at an angle of 45° with the cross section of the inner sleeve (33).

7. A vertebral core needle according to claim 5 or 6, wherein: A convex part (36) is arranged on the inner wall of the inner sleeve (33) on the upper side of the slitting cutter (35).

8. The vertebral core needle biopsy needle of claim 1 wherein: An upper sleeve (16) is arranged on the main mounting hole (13), and a grommet (17) can be detachably arranged on the upper sleeve (16).

9. A vertebral core needle biopsy needle according to claim 8, wherein: A threaded part (18) is arranged on the lower part of the inner wall of the outer sleeve (11).

10. The vertebral core needle biopsy needle of claim 1 wherein: The inner tube structure is an inner sleeve (33), an inner tube handle (32) is arranged on the inner sleeve (33), an inner mounting hole (31) corresponding to the inner sleeve (33) is arranged on the inner tube handle (32), a convex part (36) is arranged on the lower side of the inner wall of the inner sleeve (33), and an arc-shaped soft gasket (37) is arranged on one side of the bottom of the inner sleeve (33).

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